???Limits in purpose

This inverter is used for controlling speeds of three-phase induction motors in general industrial use.

Safety precautions

???The inverter cannot be used in any device that would present danger to the human body or from which malfunction or error in operation would present a direct threat to human life (nuclear power control device, aviation and space flight control device, traffic device, life support or operation system, safety device, etc.). If the inverter is to be used for any special purpose, first get in touch with the people in charge of sales.

???This product was manufactured under the strictest quality controls but if it is to be used in critical equipment, for example, equipment in which errors in malfunctioning signal output system would cause a major accident, safety devices must be installed on the equipment.

???Do not use the inverter for loads other than those of properly applied three- phase induction motors in general industrial use. (Use in other than properly applied three-phase induction motors may cause an accident.)

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Prohibited

When sequence for restart after a momentary power failure is selected (inverter)

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Ventilation slits

Note 1: When installing the inverter where the ambient temperature will rise above 40??C, detach this caution label.

An example of a caution label on the top surface translation

???Self-up terminal block

The self-up terminals , R/LI, S/L2, (T/L3), U/T1, V/T2 and W/T3 on the main circuit board were factory-set to the UP position to allow you to connect cables smoothly. After you have connected cables to these terminals, tighten them securely.

These terminals are already set to the UP position.

The terminals PO, PA/+ and PC/- are not set to the UP position. So you will have to set them to the UP position before connecting cables to them.

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Note: The self-up (self-lifting) terminals of VFNC1 are constructed with plastic body and screws, therefore please take following precautions.

1) Main circuit terminal block

When using a crimp terminal, cover its caulked part with a tube or use an insulated terminal.

VFNC1-2001P???2007P

[Main circuit input terminals]

[Main circuit output terminals]

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VFNC1-2015P???2022P

[Main circuit input terminals]

1

[Main circuit output terminals]

VFNC1S-1001P???1004P

VFNC1S-2002P???2007P

[Main circuit input terminals]

[Main circuit output terminals]

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VFNC1S-1007P

VFNC1S-2015P???2022P

[Main circuit input terminals]

1

[Main circuit output terminals]

VFNC1S-2002PL???2007PL

[Main circuit input terminals]

[Main circuit output terminals]

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1.4Notes on the application

1.4.1Motors

Use an inverter that conforms to the specifications of the three-phase induction motor and power supply being used. If the inverter being used does not conform to those

Mandatory specifications, not only will the three-phase induction motor not rotate correctly, but it may causes serious accidents through overheating and fire.

Comparisons with commercial power operation.

The VF-nC1 Inverter employs the sinusoidal PWM system. However, the output voltage and output current do not assume a precise sine wave, they have a distorted wave that is close to sinusoidal waveform. This is why compared to operation with a commercial power there will be a slight increase in motor temperature, noise and vibration.

Operation in the low-speed area

When running continuously at low speed in conjunction with a general purpose motor, there may be a decline in that motor's cooling effect. If this happens, operate with the output decreased from rated load.

If you want to run continuously low speed operations at rated torque, please use the VF motor made especially for Toshiba inverter. When operating in conjunction with a VF motor, you must change the inverter's motor overload protection level to "VF motor use (QNO)".

Adjusting the overload protection level

The VF-nC1 Inverter protects against overloads with its overload detection circuits (electronic thermal). The electronic thermal's reference current is set to the inverter's rated current, so that it must be adjusted in line with the rated current of the general purpose motor being used in combination.

High speed operation at and above 60Hz

Operating at frequencies greater than 60Hz will increase noise and vibration. There is also a possibility that such operation will exceed the motor's mechanical strength limits and the bearing limits so that you should inquire to the motor's manufacturer about such operation.

Method of lubricating load mechanisms.

Operating an oil-lubricated reduction gear and gear motor in the low-speed areas will worsen the lubricating effect. Check with the manufacturer of the reduction gear to find out about operable gearing area.

Extremely low loads and low inertia loads

The motor may demonstrate instability such as abnormal vibrations or overcurrent trips at light loads of 50 percent or under of the load percentage, or when the load's inertia moment is extremely small. If that happens reduce the carrier frequency.

Occurrence of instability

Unstable phenomena may occur under the load and motor combinations shown below.

???Combined with a motor that exceeds applicable motor ratings recommended for the inverter

???Combined with special motors such as explosion-proof motors

To deal with the above lower the settings of inverter carrier frequency.

???Combined with couplings between load devices and motors with high backlash

???Combined with loads that have sharp fluctuations in rotation such as piston movements

Braking a motor when cutting off power supply

A motor with its power cut off goes into free-run, and does not stop immediately. To stop the motor quickly as soon as the power is cut off install an auxiliary brake. There are different kinds of brake devices, both electrical and mechanical. Select the brake that is best for the system.

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Circuit interrupting when two or more inverters are used on the same power line.

MCCBn???1

INVn

Breaking of selected inverter

There is no fuse in the inverter's main circuit. Thus, as the diagram above shows, when more than one inverter is used on the same power line, you must select interupting characteristics so that only the MCCB2 will trip and the MCCB1 will not trip when a short occurs in the inverter (INV1). When you cannot select the proper characteristics install a circuit interrupting fuse between the MCCB2 and the INV1.

???Disposal

If an inverter is no longer usable, dispose of it as industrial waste.

1.4.3What to do about leak current

Warning

Current may leak through the inverter's input/output wires because of insufficient electrostatic capacity on the motor with bad effects on peripheral equipment. The leak current's value is affected by the carrier frequency and the length of the input/output wires. Test and adopt the following remedies against leak current.

(1) Leakage current from the inverter main unit

As compared with other types of inverters, a large amount of current leaks from your inverter when it is used in delta connection (with one phase grounded). Take this into consideration when selecting an earth leakage breaker.

<Leakage current in delta connection (one phase grounded)> (For reference only)

(2) Effects of leakage current across ground

Leakage current may flow not just through the inverter system but also through ground wires to other systems. Leakage current will cause earth leakage breakers, leak current relays, ground relays, fire alarms and sensors to operate improperly, and it will cause superimposed noise on the CRT screen or display of incorrect current amounts during current detection with the CT.

Leakage current path across ground

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Remedies:

1.Reduce PWM carrier frequency.

The setting of PWM carrier frequency is done with the parameter H.

2.Use high frequency remedial products for earth leakage breakers. If you use equipment like this, there is no need to reduce the PWM carrier frequency.

13. If the sensors and CRT are affected, it can be remedied using the reduction of PWM carrier frequency described in 1 above, but if this cannot be remedied since there is an increase in

the motor's magnetic noise, please consult with Toshiba.

(3) Affects of leakage current across lines

???Thermal relays

The high frequency component of current leaking into electrostatic capacity between inverter output wires will increase the effective current values and make externally connected thermal relays operate improperly. If the wires are more than 50 meters long, it will be easy for the external thermal relay to operate improperly with models having motors of low rated current (several A(ampere) or less), because the leak current will increase in proportion to the motor rating.

Remedies:

1.Use the electronic thermal built into the inverter.

The setting of the electronic thermal is done using parameter QNO & VJT.

2.Reduce the inverter's PWM carrier frequency. However, that will increase the motor's magnetic noise. Use parameter H for setting the PWM carrier frequency.

3.This can be improved by installing 0.1???~0.5???F-1000V film capacitor to the input/output terminals of each phase in the thermal relay.

W/T3

Thermal relay

???CT and ammeter

If a CT and ammeter are connected externally to detect inverter output current, the leak current's high frequency component may destroy the ammeter. If the wires are more than 50 meters long, it will be easy for the high frequency component to pass through the externally connected CT and be superimposed on and burn the ammeter with models having motors of low rated current (several A(ampere) or less) because the leak current will increase in proportion to the motor's rated current.

Remedies:

1.Use a multi-function programmable output terminal for the inverter???s control circuit. A current can be put out via the FM/OUT terminal.

If the meter is connected, use an ammeter of 1mAdc full scale or a voltmeter of 7.5V-1mA full scale.

2.Use the monitor functions built into the inverter.

Use the monitor functions on the panel built into the inverter to check current values.

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1.4.4Installation

???Installation environment

(Table 2) Examples of unapplicable chemicals and solvents

Note: The plastic cover has resistance to deformation by the above applicable solvents. They are not examples for resistance to fire or explosion.

??? Do not install in any location of high temperature, high humidity, moisture condensation and freezing and avoid locations where there is exposure to water and/or where there may be large amounts of dust, metallic fragments and oilmist.

??? Do not install in any location where corrosive gases or grinding fluids are present.

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???Installing more than one unit in a cabinet

???When using inverters where the ambient temperature will exceed 40??C, allow a space of 5 cm or more between inverters and detach the caution label on the top surface of each inverter.

???Ensure a space of at least 20 cm on the top and bottom of the inverters.

???Install an air deflecting plate so that the heat rising up from the inverter on the bottom does not affect the inverter on the top.

Ventilation fan

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2.Connection

???Do not allow water or any other fluid to come in contact with the inverter. That may result in electric shock or fire.

Warning

???When transporting or carrying, do not hold by the front panel covers. The covers may come off and the unit will drop out resulting in injury.

Prohibited

2.1Cautions on wiring

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Warning

???Do not attach devices with built-in capacitors (such as noise filters or surge absorber) to the output (motor side) terminal.

Prohibited This could cause a fire.

2 ???Preventing radio noise

To prevent electrical interference such as radio noise, separately bundle wires to the main circuit's power terminals (R/L1, S/L2, T/L3) and wires to the motor terminals (U/T1, V/T2, W/T3).

???Control and main power supply

The control power supply and the main circuit power supply for the VF-nC1 are the same.

If a malfunction or trip causes the main circuit to be shut off, control power will also be shut off. When checking the cause of the malfunction or the trip, use the trip holding retention selection parameter.

???Wiring

???Because the space between the main circuit terminals is small use sleeved pressure terminals for the connections. Connect the terminals so that adjacent terminals do not touch each other.

???For ground terminal use wires of the size that is equivalent to or larger than those given in table 10.1 and always ground the inverter (200V voltage class: D type ground [former type 3 ground]).

Use as large and short a ground wire as possible and wire it as close as possible to the inverter.

???See the table in 10.1 for wire sizes.

???The length of the main circuit wire in 10.1 should be no longer than 30 meters. If the wire is longer than 30 meters, the wire size (diameter) must be increased.

2.2Standard connections

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2.2.1Standard connection diagram (1)

This diagram shows a standard wiring of the main circuit.

(1) Sink <common: CC>

???When using V1/S3 terminal as an analog input terminal (H :  or )

1-phase series

MCCB

PowerR/L1

supply

S/L2

1-phase series do not have T/L3 terminal.

*1: Only European model has a built-in noise filter.

*2: The terminal can be switched between FM/OUT and VI/S3 by changing a parameter.

*3: The terminal can also be used as an input terminal by changing a parameter.

*4: European models are not provided with PO terminal.

*5: 1-phase 100V models cannot be used with DC reactors.

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???When using V1/S3 terminal as a logic input terminal (H : )

1-phase series

1-phase series do not have T/L3 terminal.

*1: Only European model has a built-in noise filter.

*2: The terminal can be switched between FM/OUT and VI/S3 by changing a parameter.

*3: The terminal can also be used as an input terminal by changing a parameter.

*4: To use VI/S3 terminal as an input terminal, P15 and VI/S3 must be short- circuited with a resistor (recommended resistance: 4.7k???-1/4W).

*5: European models are not provided with PO terminal.

*6: 1-phase 100V models cannot be used with DC reactors.

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2.2.2 Standard connection diagram (2)

(2) Source <common: P15>

???When using V1/S3 terminal as an analog input terminal (H :  or )

1-phase series

MCCB

PowerR/L1

supply

S/L2

1-phase series do not have T/L3 terminal.

*1: Only European model has a built-in noise filter.

*2: The terminal can be switched between FM/OUT and VI/S3 by changing a parameter.

*3: The terminal can also be used as an input terminal by changing a parameter.

*4: European models are not provided with PO terminal.

*5: 1-phase 100V models cannot be used with DC reactors.

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???When using V1/S3 terminal as a logic input terminal (H : )

1-phase series

PowerR/L1

supply

S/L2

1-phase series do not have T/L3 terminal.

*1: Only European model has a built-in noise filter.

*2: The terminal can be switched between FM/OUT and VI/S3 by changing a parameter.

*3: The terminal can also be used as an input terminal by changing a parameter.

*4: European models are not provided with PO terminal.

*5: 1-phase 100V models cannot be used with DC reactors.

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2.3Description of terminals

2.3.1Main circuit terminals

This diagram shows an example of wiring of the main circuit. Use options if necessary.

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???Sink logic (negative common)/source logic (positive common)

????????? Logic switching of input output terminals

Current flowing out turns control input terminals on. These are called sink logic terminals. (For all models except models with a built-in noise filter, control input terminals are factory-set to sink logic.) The general used method in Europe is source logic in which current flowing into the input terminal turns it on.

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Output terminals cannot be switched between sink logic and source logic.

See the figures below for connection to sink logic and source logic terminals.

???Switching the input terminal logic between sink and source

Input terminals of the VF-nC1 inverter can be switched between sink logic and source logic, using the H parameter.

When switching between sink logic and source logic, do it before connecting cables to inverter???s control circuit terminals. When the confirmation message G or G is displayed after switching between sink logic and source logic, using the H parameter, reset the inverter, using the operation panel, by turning the power off, or by inputting a reset signal from an external control device.

???Switching the VI/S3 terminal between logic input and analog input

The VI/S3 terminal of the VF-nC1 inverter can be switched between contact input and analog input by changing a parameter setting. When switching between contact input and analog input, do it before connecting cables to inverter???s control circuit terminals (H).

If switching between contact input and analog input is done after cable connection, the inverter and/or the external device connected might be damaged. Before turning on the inverter, make sure all cables are connected correctly to the control terminals.

When using the VI/S3 terminal as an contact input terminal (sink logic), be sure to insert a resistor* between the P15 and VI/S3 terminals. (Recommended resistance: 4.7k???-1/4W).

???Switching the FM/OUT terminal between meter output (PWM output) and open collector output

The FM/OUT terminal of the VF-nC1 inverter can be switched between meter output (PWM output) and open collector output.

When switching between meter output (PWM output) and open collector output, do it before connecting an external device to the inverter. After switching from meter output (PWM output) to open collector output, and vice versa, check using the HOUN parameter to be sure that the desired function is assigned to the FM/OUT terminal, and then turn the power off. After the completion of cable connection, turn the power back on. If switching between meter output and open collector output is done after cable connection, the inverter might be damaged.

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3. Simple operation

???If the inverter begins to emit smoke or an unusual odor, or unusual sounds, immediately turn power off.

If the equipment is continued in operation in such a state, the result may be fire. Call your local sales agency for repairs.

???Always turn power off if the inverter is not used for long periods of time.

???Turn input power on after attaching the front cover.

When enclosed inside a cabinet and using with the front cover removed, always close the cabinet doors first and then turn power on. If the power is turned on with the front cover or the cabinet doors open, it may result in electric shock.

???Make sure that operation signals are off before resetting the inverter after malfunction.

If the inverter is reset before turning off the operating signal, the motor may restart suddenly causing injury.

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3.1Simple operation of the VF-nC1

The procedures for setting operation frequency and the methods of operation can be selected from the following.

(2)Frequency setting using the UP and DOWN keys on the operation panel

(3)Setting of frequency using external signals to the terminal block (0-10Vdc, 4-20mAdc)

(4)Frequency setting by serial communications (with

an optional external device)

Use the basic parameters EOQF (command mode selection) and HOQF (frequency setting mode selection) for selecting.

[Steps in setting parameters]

*Pressing the MON key twice returns the display to standard monitor mode (displaying operation frequency).

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3.1.1How to start and stop

(1) Start and stop using the operation panel keys (EOQF : )

Use the RUN and STOP keys on the operation panel to start and stop the motor.

(2) Start and stop using external signals to the terminal board (EOQF : )

Use external signals to the inverter terminal board to start and stop the motor. (Sink logic connection)

3.1.2How to set the frequency

(1)Setting the frequency using the potentiometer on the inverter main unit

(HOQF : )

Set the frequency with the notches on the potentiometer.

Move clockwise through the higher notches for the higher frequencies.

Since the potentiometer has hysteresis, it settings may change to some degree after the power is turned off and turned back on.

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Note: The current input and voltage input functions cannot be used at the same time.

3) Setting the frequency using current input (4-20mA)

* The H parameter (VI/S3 terminal function selection) is used to specify a function for the VI/S3 input terminal. The FCHG parameter (frequency command forced switching) makes it possible to use both the analog input frequency signal and the frequency signal set with the internal potentiometer, which can be switched by activating or deactivating the input terminals.

See 5.1 for details.

Note: The current input and voltage input functions cannot be used at the same time.

(4) Setting the frequency by serial communications (HOQF : )

The frequency can also be set from a higher-order external control device via optionally available communications conversion units (RS2001Z, RS20035, RS2002Z and RS4001Z).

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4.Basic VF-nC1 operations

The VF-nC1 has the following three monitor modes.

Standard monitor mode : The standard inverter mode. This mode is enabled when

If there is an error in the inverter, the alarm signal and the frequency will flash alternately in the LED display.

E : When a current flows at or higher than the overcurrent stall level.

R : When a voltage is generated at or higher than the over voltage stall level.

N : When a load reaches 50% or higher of the overload trip value.

J : When temperature inside the inverter rises to the overheating protection alarm level.

All VF-nC1 series of inverters: About 110??C

Setting monitor mode : The mode for setting inverter parameters.

For more on how to set parameters, see 4.1.

Status monitor mode : The mode for monitoring all inverter status.

Allows monitoring of set frequencies, output current/voltage and terminal information.

For more on how to use the monitor, see 8.1.

Pressing the MON key will move the inverter through each of the modes.

MON

D-1

After you set the basic parameter V[R to  (Initialize to default setting) or the first power, the

inverter will be in setup parameter mode. When the inverter is in this mode, you need to set a setup parameter, as described below, to make the inverter ready for operation.

Follow these steps to change the setup parameter [Example: Changing from P to P: sink logic (negative common) and a base frequency of 60Hz]

???You can change this parameter setting. To do so, you need to reset the basic parameter V[R

to  (default setting).

???You can also change the parameters in the table below individually even after setting a setup parameter.

The settings of the parameters listed below are changed by the setup parameter.

When you search for I4W parameters, only the parameters in the shaded area will be displayed as changed parameters.

???Values set by each setup parameter

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???Example of parameter setting

The steps in setting are as follows. (Example of changing the starting frequency selection

H from  to .)

???Press the ??? key to change the dynamic braking selection

??? from 0.5Hz to 1.0Hz

Pressing the ENTER key alternately flashes on and off the ENT ??? H parameter and changed value and allows the save of those

values.

If there is anything you do not understand during this operation, press the MON key several times to start over from the step of CWJ display.

4.1.4How to set (use) special parameters

(1) Setting a parameter, using the wizard function (CWH)

Wizard function (CWH): The wizard function refers to the special function of calling up only functions necessary to set up

the inverter in response to the user???s needs. When a purpose-specific wizard is selected, a group of parameters needed for the specified application (function) is formed and the inverter is switched automatically to the mode of setting the group of parameters selected. You can set up the inverter easily by simply setting the parameters in the group one after another. The wizard function (CWH) provides four purpose-specific wizards.

* This parameter is valid only for VFNC1 (S)-????????????P???-W type.

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???How to use the wizard function

Here are the steps to follow to set parameters, using the wizard function. (When the basic setting wizard (CWH) is set to 1)

???By pressing the MON key, you can return to the default

If there is anything you do not understand during this operation, press the MON key several times to start over from the step of CWJ display.

JGCF or GPF is affixed respectively to the first or last parameter in each wizard parameter group.

Table of parameters that can be changed using the wizard function

* This parameter is valid only for VFNC1 (S)-????????????P???-W type.

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(2) Searching for a history of changes, using the history function (CWJ)

History function (CWJ)

The history function automatically searches for the five parameters set or changed last and displays them in reverse order of setting or change. This parameter can also be used to set or change parameters.

Notes

???Parameters set or changed using the setup parameter also are included among parameters displayed.

???JGCF and GPF are added respectively to the first and last parameters in a history of

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(3)Searching for and changing parameters, using the user parameter group function ITW

User parameter group function (ITW):

The user parameter group function automatically searches for only parameters whose settings are different from the factory default settings, and displays them as ITW parameters. This parameter can also be used to set and change parameters in ITW.

Notes

??? Parameters that have been returned to their factory default settings are not displayed as ITW parameters.

4

???How to search for and change parameters

Follow the steps below to search for and change parameters.

If you feel puzzled as to how to operate, press the MON key several times to go back to the step where CWJ is displayed, and perform these steps all over again.

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4.1.5Parameters that cannot be changed while running

For reasons of safety, the following parameters have been set up so that they cannot be reprogrammed while the inverter is running.

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4.1.6Returning all parameters to standard default setting

Setting the standard default setting parameter V[R to 3, all parameters can be returned to the those factory default settings.

Note: For more details on the standard default setting parameter V[R, see 5.3.

Notes on operation

???We recommend that before this operation you write down on paper the values of those parameters, because when setting V[R to 3, all parameters with changed values will be returned to standard factory default setting.

If there is something that you do not understand during this operation, press the MON key several times and start over again from the step of CWJ display.

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???The following control input terminals are always operative, no matter how the EOQF parameter (command mode selection) and the HOQF parameter (frequency setting mode selection) are set.

???Reset terminal (enabled only when a trip occurs.)

???Standby terminal

???External input trip stop terminal

???Before changing the setting of the EOQF parameter (command mode selection) or the HOQF parameter (frequency setting mode selection), be sure to put the inverter out of operation. (When H is set to , the settings of these parameters can be changed even during operation.)

???There are two kinds of functions: function of responding to signals from the device specified with the HOQF parameter and function of responding to signals from the terminal board only.

???When the highest-priority command is entered from an external device or a terminal board, it takes priority over commands from the device specified with the HOQF parameter.

*To switch between current input and voltage input, use the H parameter (Analog input / logic input function selection).

5.2Meter setting and adjustment

HOUN : FM/OUT terminal functions selection

HO : Meter adjustment

??? Function

The FM/OUT terminal can be switched between meter output (PWM output) and open collector. When connecting a meter to the FM/OUT terminal, set the HOUN parameter to a number other than -1 (open collector output) and connect the meter between FM/OUT (positive side) and CC (negative side).

If you want to connect a meter to the inverter, choose a full-scale 0~1mAdc ammeter or a full-scale 0~7.5Vdc-1mA voltmeter.

The meter output of VFNC1 may have some errors because of PWM waveform. Especially if the meter output is near 0, the errors may be increased.

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5.3Standard default setting

V[R : Standard setting mode selection

??? Function

Allows setting of all parameters to the standard default setting, etc. at one time. (Except the setting of HO)

Default setting (V[R=)

Setting V[R to  will return all parameters to the standard values that were programmed at the factory.

???When 3 is programmed, < KPKV will be displayed for a short time after setting and will then

be erased and displayed the original indication ???PQ??? (Setup parameter). (Only for VFNC1 (S)-

????????????P???-W type) This setting clears all trip history data but it does not clear cumulative operation time data. This setting does not affect the settings of the following parameters.

Trip clear (V[R=)

Setting V[R to  initializes the past four sets of recorded error history data. * (The parameter does not change.)

Cumulative operation time clear (V[R=)

Setting V[R to  allows the initial resetting of the cumulative operation time monitor (0 [zero] time).

* (The parameter does not change.)

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5.4Selecting forward and reverse runs (operation panel only)

HT : Forward/reverse selection (Operation panel)

??? Function

Program the direction of rotation when the running and stopping are made using the RUN key and STOP key on the operation panel. Valid when EOQF (command mode) is set to 1 (operation panel).

see 8.1.

???When the F and R terminals are used for switching between forward and reverse rotation from the terminal board, the HT forward/reverse run selection is rendered invalid.

Short across the F-CC terminals: forward rotation

Short across the R-CC terminals: reverse rotation

???This function is valid only when EOQF is set to K (operation panel).

5.5Setting acceleration/deceleration time

CEE : Acceleration time 1 (s)

FGE : Deceleration time 1 (s)

??? Function

1) For acceleration time CEE, program the time that it takes for the inverter output frequency to go from 0Hz to maximum frequency HJ.

2) For deceleration time FGE, program the time that it takes for the inverter output frequency to go from maximum frequency HJ to 0Hz.

Set acceleration time from 0Hz operation frequency to maximum frequency HJ and deceleration time as the time when operation frequency goes from maximum frequency HJ to 0Hz.

Output frequency (Hz)

???If the programmed value is shorter than the optimum acceleration/deceleration time determined by load conditions, overcurrent stall or overvoltage stall function may make the acceleration/deceleration time longer than the programmed time. If an even shorter acceleration/deceleration time is programmed, there may be an overcurrent trip or overvoltage trip for inverter protection. (For further details, see 13.1).

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1) Constant torque characteristic

Setting of V/F control mode selection RV to  (V/F constant)

This setting is applied to loads, such as conveyers and cranes that require the same torque as the rated torque even at low speeds.

???Parameter setting

The default torque characteristic is set based on the torque characteristic of World Energy series 4P motors manufactured by Toshiba Industrial Machinery.

When using the inverter with a VF motor or a motor with 6 or more poles, set the torque boost parameter at 80% or so of the default setting.

When the inverter is used with a special motor with a particular V/F ratio, it requires adjustments.

Excessively boosting torque could results in an overcurrent trip. To avoid this, do not increase torque by more than 1.2 times the default torque.

2) Correcting the error in rotational speed due to the slippage of the motor

Setting of V/F control mode selection RV to  (Vector control)

Setting this parameter to 3 causes the inverter to monitor the load currents and automatically correct the error in speed caused by the slippage of the motor. Slip correction gain is adjusted to

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5.10Setting the electronic thermal

QNO : Electronic thermal protection characteristics

VJT : Motor thermal protection level 1 (%)

??? Function

Selects the electronic thermal protection characteristics that fit with the ratings and characteristics of the motor.

???Parameter setting

The electronic thermal protection characteristics selection QNO is used to enable or disable the motor overload trip function (QN) and the overload stall function.

While the inverter overload trip (QN) will be in constant detect operation, the motor overload trip (QN) can be selected using the parameter QNO.

Explanation of terms

Overload stall : When the inverter detects an overload, this function automatically lowers the output frequency before the motor overload trip QN is activated. The soft stall function allows the drive to run with balanced load current frequency without a trip. This is an optimum function for equipment such as fans, pumps and blowers with variable torque characteristics that the load current decreases as the operating speed decreases.

Note: Do not use the overload stall function with loads having constant torque characteristics (such as conveyor belts in which load current is fixed with no relation to speed).

[Using standard motors (other than motors intended for use with inverters)]

When a motor is used in the lower frequency range than the rated frequency, that will decrease the cooling effects for the motor. This speeds up the start of overload detection operations when a standard motor is used in order to prevent overheating.

???Setting of electronic thermal protection characteristics selection QNO

??? : valid, ?? : invalid

???Setting of motor electronic thermal protection level 1 VJT

If the capacity of the motor is smaller than the capacity of the inverter, or the rated current of the motor is smaller than the rated current of the inverter, adjust the electronic thermal protection level 1 VJT so that it fits the motor's rated current.

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Output current reduction factor [%]

??? : valid, ?? : invalid

A VF motor (motor for use with an inverter) can be used in lower frequency ranges than the general- purpose motor, but if that frequency is extremely low, the effects of cooling on the motor will deteriorate.

???Setting the motor electronic thermal protection level 1 VJT

If the capacity of the motor being used is smaller than the capacity of the inverter, or the rated current of the motor is smaller than the rated current of the inverter, adjust the electronic thermal protection level 1 VJT so that it fits the motor's rated current.

* If the indications are in percentages (%), then 100% equals the inverter's rated output current (A).

Output current reduction factor [%]/[A]

2) Inverter over load characteristics

Set to protect the inverter unit. Cannot be changed or turned off by parameter setting.

If the inverter overload trip function (QN) is activated frequently, this can be improved by adjusting the stall operation level H downward or increasing the acceleration time CEE or deceleration time FGE.

Inverter overload

*To protect the inverter, overload trip may activate in a short period of time when output current reaches 150% or higher.

Inverter overload protection characteristics

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???Motor 150%-overload time limit : H

Using the H parameter (motor 150%-overload withstanding time), you can set the time (between 10 and 800 seconds) elapsed before an overload trip occurs (QN) when the motor is operated under a load of 150%.

5.11Preset speed operation (speeds in 15 steps)

UT ??? UT : Preset speed operation frequencies 1~7 (Hz)

H ??? H : Preset speed operation frequencies 8~15

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???SS3 (preset speed 3) and SS4 (preset speed 4) are not assigned to any terminals at the factory. Before use, therefore, assign SS3 and SS4 to reserved terminals, using the input terminal function selection parameter. In the above example, these functions are assigned to the R and VI/S3 terminals.

[Example of a connection diagram] (When the input terminals are placed in sink logic mode)

*1 : When using the VI/S3 terminal as a contact input terminal, be sure to insert a resistor* between the P15 and VI/S3 terminals. (* Recommended resistance: 4.7k???-1/4W)

3) Using other speed commands with preset speed command

Note) The preset speed command is always given priority when other speed commands are input at the same time.

Below is an example of 3-step speed operation with standard default setting.

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6.Extended parameters

Extended parameters are used for sophisticated operation, fine adjustment and other special purposes. Change parameter settings as required. See Table of extended parameters in Section 11.

6.1Output signal-related parameters

6.1.1Low speed signal

H : Low speed signal output frequency (Hz)

To output signals to the FLA, FLB and FLC terminals, set the H parameter.

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Output frequency [Hz]

H ??? 2.5Hz

H

H ??? 2.5Hz

* FM/OUT terminal function selection (HOUN) : 0 (Output frequency)

Note: Activate H to output signals to the FM/OUT terminal, or set H to 8 or 9 to output signals to the FLA, FLC and FLB terminals.

6.2Parameters related to terminal function selection

*To use the VI/S3 terminal as a contact input terminal in sink connection, be sure to insert an adequate resistor* between P15 and VI/S3. (* Recommended resistance: 4.7 k???-1/4W)

6.2.2Keeping an input terminal function always active

H : Always active function selection (ST)

???Function

This parameter allows you to select a function you want to keep always active (ON). (Only one function can be selected.)

???Parameter setting

6.2.3Changing the function of an input terminal

H : Input terminal selection 1 (F)

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3)Sink logic/source logic input

Switching between sink logic and source logic (input terminal logic) is possible.

6.2.4Jog run

??? Function

The VF-nC1 inverter is capable of jog operation if its input terminal selection function is so set. Jog run refers to jogging or inching a motor. Input of a jog run signal causes the VF-nC1 inverter to produce a jog run signal (fixed at 5Hz) for 0.1 seconds (fixed), regardless of the specified acceleration time. Cutting off a jog run signal causes the motor to coast to a stop.

???The motor continues to run in jog mode as long as both the jog run signal and the operation signal are put out. To enable the jog run function, you need to assign the jog run function (4) to an unassigned input terminal.

For the VF-nC1 inverter, all settings for jog run are fixed, as shown below.

F-CC

R-CC

S1 (JOG)-CC

Normal operation frequency setting signal input

???The jog run terminals (S1-CC) are enabled when the operation frequency is below 5Hz. They do not function when the operation frequency is higher than the jog run frequency (5Hz).

???The motor continues to run in jog mode while the jog run terminals (S1-CC) are electrically connected.

???Jog run has priority, and it continues even if any other operation command is entered during operation.

Note: During jog run, the VF-nC1 inverter may produce an Low-speed detection signal (LOW) signal but not Designated frequency reach signal (RCH) signal, and therefore PI control is not performed.

6.2.5Switching between control logics

H : Sink/Source selection

??? Function

This parameter is used to switch between sink logic (negative common) and source logic (positive common).

???Parameter setting

*The value is changed according to the set-up parameter condition. (VFNC1 (S)-????????????P???-W type) 0 (sink) for VFNC1 (S)-????????????P??? type.

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6.2.6Changing the function of an output terminal

H : Output terminal selection 1 (OUT/FM)

H : Output terminal selection 3 (FLA, FLB, FLC)

??? Function

These parameters are used to send various signals from the inverter to an external device. With these parameters allowing selection from among 14 functions for each output terminal, you can design a system with great flexibility.

*: The function of the FM/OUT terminal can be switched between meter output (PWM) and open collector output. To use the FM/OUT terminal as an open collector output terminal, set HOUN

to -1 (open collector output).

*1 If using the relay with the rated voltage DC12V of operating coil, the maximum allowable voltage should be higher than 120% of rated voltage, and the maximum ampere value should not exceed 50mA.

(Operating coil resistance 250 ~ 800 ??? approx.).

???Setting of output terminal functions

See 2.3 for details.

???Related parameters

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6.3Basic parameters 2

6.3.1Switching motor characteristics via input terminals

H : Base frequency 2 (Hz)

H : Base frequency voltage 2 (V)

H : Torque boost 2 (%)

H : Motor thermal protection level 2 (%)

??? Function

These parameters are used to switch between two different types of motors connected to the inverter or to change the

???Setting of switching terminals

The function of switching from motor 1 to motor 2 is not assigned by default to any terminal. So, assign this function to an unassigned terminal if necessary.

Parameters to be switched vary depending on the function number selected with an input terminal selection parameter.

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6.7Jump frequency ??? Jumping resonant frequencies

??? Function

Resonance due to the natural frequency of the mechanical system operated can be avoided by jumping the resonant frequency during operation. During jumping, hysteresis characteristics with respect to the resonant frequency are given to the motor.

???Do not set jump frequencies that overlap each other.

???During acceleration or deceleration, the jumping function is disabled for the operation frequency.

6.8Preset speed operation frequencies 8 to 15

H ??? H : Preset speed operation frequencies 8 to 15 (Hz)

See Section 5.11 for details.

6.9PWM carrier frequency

H : PWM carrier frequency

??? Function

1) This parameter is used for changing the carrier frequency in order to change the tone of the magnetic noise produced by the motor. This parameter is also effective in preventing the motor from resonating with its load machine or fan cover. 2) In addition, this parameter is used to reduce the electromagnetic noise produced by the inverter. To reduce the electromagnetic noise, decrease the carrier frequency. Note: This reduces the electromagnetic noise but increases the magnetic noise from the motor. 3) If the PWM carrier frequency is set above 4kHz, it may fall automatically during acceleration

or under certain circumstances where an overcurrent flows.

[Parameter setting]

*1 Cartain models require to reduce the rated load current according to carrier frequency setting as following table.

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*When the motor restarts in retry mode, this function will be activated regardless of the parameter setting.

1)Auto-restart after momentary power failure (auto-restart function)

Input voltage

Motor speed

and control power supply has detected an undervoltage.

2) Start of motor during coasting (Motor speed search function)

Input voltage

*The ST (standby signal) function is not assigned to any terminal. If necessary, assign this function to an unassigned terminal, using the multi-function programmable terminal function.

???H set to  (): The auto-restart function is activated when R(ST)-CC is short-circuited after they have been opened.

Notes

??? A waiting time between 200 and 300 msec is preset to allow the residual voltage in the

motor to come down to a specified level during restart. For this reason, the start-up takes more time than usual.

??? Use this function when operating a system with one inverter connected with one motor. This function may not be performed properly in a system with one inverter connected with multiple motors.

Application to a crane or hoist

The crane or hoist might allow the load to move downward during the time elapsed before the motor starts after receiving an operation starting command. When applying the inverter to such a lifting gear, set the auto-restart control selection parameter to 0 (disabled) and avoid using the retry function.

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retry process.

???A virtual cooling time is provided for overload tripping (QN, QN), so that the retry process is started after the virtual cooling time and retry time.

???In the case of overvoltage tripping (QR~QR), tripping may recur unless the DC voltage falls below a predetermined level.

???In the case of overheating tripping (QJ), tripping may recur unless the internal temperature of the inverter falls below a predetermined level, since the internal temperature is monitored.

???Even if trip retention selection parameter (H) is set to 1, the retry function is enabled if the number of times of retry is set with H.

???During the retry process, the message ???TVT[??? and the item specified with the status monitor selection parameter H are displayed alternately.

6.10.4Avoiding overvoltage tripping

H : Over voltage limit operation

??? Function

This parameter is used to keep the output frequency constant or increase the frequency to prevent overvoltage tripping due to an increase in DC voltage during deceleration or constant- speed operation. The deceleration time may be prolonged during overvoltage limit operation.

Overvoltage limiting level

Output frequency

Overvoltage limiting level

DC voltage

[Parameter setting]

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4) Adjusting the PI control gain level

Adjust the PI control gain level according to the process quantity, the feedback signal and the object to be controlled.

The following parameters are provided for gain adjustment.

H (Proportional (P) gain adjustment parameter)

This parameter is used to adjust the proportional gain level during PI control. A correction factor, which is proportional to the particular deviation (the difference between the set frequency and the feedback value), is obtained by multiplying this deviation by the parameter setting.

Increasing the P gain increases response. However, increasing it higher than required results in an undesirable event such as hunting.

Slow response

Time

H (Integral (I) gain adjustment parameter)

This parameter is used to adjust the integral gain level during PI control. Any deviations remaining after proportional control are cleared to zero (residual deviation offset function).

Increasing the I gain increases response. However, increasing it higher than required results in an undesirable event such as hunting.

Process quantity setting

Residual deviation

Time

5) Adjusting an analog command voltage

To use feedback input (VI/S3 terminal), perform a voltage-scaling adjustment as required. See Section 6.4.1 for details.

If the feedback input value is very small, the voltage-scaling adjustment value can also be used for gain adjustment.

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6.12Improving torque and speed characteristics

6.12.1Setting motor constants

RV : V/F control mode selection

XN : Base frequency 1 (Hz)

H : Slip frequency gain

H : Base frequency voltage 1 (V) (rated voltage of motor)

???When setting the RV parameter (V/F control mode selection) to 3 (slip correction), adjust the following parameters, too.

200 [V] for VFNC1 (S)-????????????P??? type.

H : Used to set a motor slippage correction factor. There is no need to change the factory default setting under normal conditions. However, if the motor speed fluctuates considerably with load fluctuations, increase the gain to reduce fluctuations of the motor speed.

H : Used to set the rated voltage of the motor. There is no need to change the factory default setting when using ordinary motors. However, when using a motor with a rated voltage and a base frequency other than 200V-50Hz, 200V-60Hz or 220v-60Hz, enter the rated voltage of the motor printed on its rating plate, in addition to its base frequency (XN).

6.12.2Optimizing control characteristics

Although there is no need to change the settings of the following parameters under normal conditions, control characteristics may be improved by adjusting the parameters according to the motor specifications and load characteristics.

*The value is changed according to the set-up parameter condition. (VFNC1 (S)-????????????P???-W type) 1710 [min-1] for VFNC1 (S)-????????????P??? type.

???Enabled if the RV parameter (V/F control mode selection) is set to 0 (V/F)

H : Used to adjust the effective response to the frequency command.

???Increase the value to increase response.

???Decrease the value to decrease response.

Adjust the value in increments of 10 (%) or so while checking the effective response. H : Used to adjust the effective response to the frequency command.

???Increase the value if overshooting or hunting occurs.

???Increase the value if the speed reducer makes a gear noise.

???Increase the value if overvoltage tripping occurs on completion of deceleration.

Adjust the value in increments of 10 (%) or so while checking the effective response.

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???Enabled if the RV parameter (V/F control mode selection) is set to 3 (slip correction)

H : Used to set the rated current (A) of the motor. Enter the rated current printed on the motor???s rating plate.

H : Used to set the no-load current in percentage with respect to the rated current of the motor. Enter the value calculated from a motor test report value or the power factor printed on the rating plate of the motor.

H : Used to set the rated rotational speed (min-1) of the motor. Enter the rotating speed printed on the motor???s rating plate.

H : Used to adjust the response to the frequency command.

???Increase the value to increase response.

???Decrease the value to decrease response.

Adjust the value in increments of 10 (%) or so while checking the effective response. H : Used to adjust the effective response to the frequency command.

???Increase the value if overshooting or hunting occurs.

???Increase the value if the speed reducer makes a gear noise.

???Increase the value if overvoltage tripping occurs on completion of deceleration.

6.13Acceleration/deceleration patterns and acceleration/deceleration 2

???Switching between acceleration and deceleration

1)Changing the acceleration/deceleration time by adjusting the internal frequency (H)

???Changing the acceleration/deceleration time by adjusting the frequency set with H ???

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2)Changing the acceleration/deceleration time by adjusting the contact input signal

???Changing the acceleration/deceleration time, using external terminals ???

Time (sec)

???This switching is done when acceleration/deceleration 2 (AD2) is assigned to the R terminal (when H (input terminal selection 2) is set to 5 (acceleration/deceleration 2)), using the multi- function programmable input terminal function.

In this case, set EOQF to 0 (terminal block).

No signal for switching to acceleration/deceleration 2 is set by default. If necessary, assign function 5 (AD2) to an unassigned terminal, using the input terminal selection function.

6.14Protection functions

6.14.1Current stall setting

H : Stall prevention level

??? Function

If a current exceeding the level specified with H, the stall prevention function is activated to decrease the output frequency.

When specifying a value larger than 100 (%), set also the VMT parameter (motor electronic thermal protection level) properly.

???Parameter setting

[Message displayed along with an QE alarm]

If an QE alarm goes off (if a current exceeding the stall prevention level), the output frequency displayed will change and the ???E??? on the left of it will blink.

Example of display : E

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6.14.2Inverter trip retention

H : Inverter trip retention selection

??? Function

This parameter is used to prevent the tripped inverter from being restored to working order when the power is turned back on. The inverter can be restored by resetting it from the operation panel (terminal).

If the cause of the error or other defective conditions is not eliminated

6.14.3External input trip stop

H : External input trip stop mode selection

H : DC braking time (s)

??? Function

These parameters allow you to specify a method for stopping the inverter when it receives an external trip stop signal via input terminals or an emergency stop signal from the operation panel. When the inverter shuts down, the error message ???G??? is displayed on the inverter???s display panel and the error FL relay (trip output) is activated. When H is set to  (emergency DC braking), DC braking time also needs to be set using H.

1) External trip stop by means of a terminal

External trip stop can be performed by means of the a-terminal. Perform the following steps to assign the external stop function to a terminal and to specify a stopping method.

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(An example of terminal assignment) Assigning the trip stop function to the R terminal

1)Emergency stop by means of the specified terminal is possible, even when operation is controlled from the operation panel.

2)If H (DC braking starting frequency) is set to 0.0 (Hz) and H (DC braking time to 0.0 (sec), the DC braking function will not be activated even if H is set to 2 (emergency DC braking).

2)Emergency stop by means of the operation panel

6.14.4Output phase failure detection

H : Output phase failure detection mode selection

??? Function

This parameter allows you to select a mode of detecting an output open-phase failure. If an open-phase failure persists for one second or more, the tripping function and the FL relay will be activated, and at the same time, the error message GRJQ will be displayed.

Set H to ?????? to open the motor-inverter connection by switching commercial power operation to inverter operation. Detection errors may occur for special motors such as high-speed motors.

H??? (Disabled)????????????????????????????????????????????? No tripping (FL relay not activated)

H??? (Enabled) ????????????????????????????????????????????? An open-phase check is performed when operation is started for the first time after power has been turned on. The inverter will trip if an open-phase failure persists for one second or more. (FL relay activated)

H??? (Enabled) ????????????????????????????????????????????? An open-phase check is performed each time operation is started. The inverter will trip if an open-phase failure persists for one second or more. (FL relay activated)

6.14.5Motor 150%-overload time limit

H : Motor 150%-overload time limit

??? Function

This parameter is used to set the time elapsed before the inverter trips when the motor is operated under a load of 150%.

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6.14.6Input phase failure detection

H : Input phase failure detection mode selection

??? Function

This parameter allows you to select a mode of detecting an input open-phase failure. If the ripple voltage in the main circuit capacitor remains very high for a certain period of time, the inverter will trip and the FL relay will be activated. At the same time, the error message GRJK will be displayed. If the power capacity is far larger than the inverter capacity (by more than 200kVA and more than 10 times), a detection error may occur. If this occurs, install an AC or DC reactor. If the motor capacity is very small as compared with the inverter capacity, no open-phase failures may be detected.

H??? (Disabled)????????? No tripping (FL relay not activated)

H??? (Enabled) ????????? An open-phase check is performed during operation. The inverter trips

6.14.7Over-torque alarm

H : Over-torque alarm level

H : Over-torque detection time

H : Output terminal selection 1 (OUT/FM) (H: Output terminal selection 3 (FL))

??? Function

An over-torque alarm signal is put out if a torque current exceeding the level set with H (over-torque alarm level) flows for a period of time longer than that set with H (over- torque detection time). To put out the signal via the FM/OUT or FL terminal, this function needs to be assigned to it in advance, using the output terminal function selection parameter.

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<Example of operation>

1)If function 12 (OT: over-torque detection) is assigned to the FM/OUT terminal, using the output terminal selection parameter H

H (FM/OUT terminal selection 1): 12 (OT: over-torque detection)

Time (sec)

*The VF-nC1 inverter has 10% of hysteresis to prevent the occurrence of over-torque hunting. Therefore, the over-torque signal is turned off at a level lower than the setting of H by 10% (hysteresis).

6.14.8Undervoltage trip

H : Under voltage trip selection

??? Function

This parameter is used to select the control mode activated when an undervoltage is detected. The error message ???WR??? will be displayed if the inverter trips because of an undervoltage.

H??? : Disabled ????????????The inverter shuts down but not trip. (FL relay not activated) The inverter shuts down if the voltage drops below 64% of the rated voltage.

H??? : Enabled ???????????????The inverter shuts down. It trips if the voltage drops below 64% of the rated voltage. (FL relay activated)

H??? : Disabled ????????????The inverter shuts down but not trip. (FL relay not activated) The inverter shuts down if the voltage drops below 50% of the rated voltage. When setting H to , be sure to install the input reactor of an option.

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6.14.9Analog input disconnection detection

H : Analog input disconnection detection

??? Function

This parameter is used to detect a break in an analog signal to the VI/S3 terminal. If an analog signal is below the level set with H for 0.3 seconds (approx.), the inverter will assume the signal to be broken and it will trip and display the error message ???G.??? (The Analog input disconnection detection function is disabled if H is set to 0.0%.)

6.15Operation panel parameters

 : Permitted _____ EOQF and HOQF settings cannot be changed during operation. (Default)

 : Prohibited _____ All parameters are read/write-protected.

 : Permitted _____ EOQF and HOQF settings also can be changed during operation.

 : Prohibited _____ Frequency can be changed from the operation panel but all other parameters are read/write-protected.

 : Permitted _____ The emergency stop function cannot be controlled from the operation panel and EOQF and HOQF settings cannot be changed during operation.

 : Prohibited _____ The emergency stop function cannot be controlled from the operation panel but all parameters are read/write-protected.

 : Permitted _____ The emergency stop function cannot be controlled from the operation panel and EOQF and HOQF settings also can be changed during operation.

 : Prohibited _____ The emergency stop function cannot be controlled from the operation panel, frequency can be changed on the operation panel, but any other parameters are write/read-protected.

Note: Some parameters cannot be changed during operation, no matter how H is set. (See 4.1.4.)

???Canceling the setting

Only the setting of H can be changed anytime, no matter how it is set.

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6.15.2Changing the unit displayed (A/V/min-1)

H : Unit selection

H : Frequency units selection

??? Function

These parameters are used to change the unit displayed on the display panel. % ??? A (ampere)/V (volt)

Frequency ??? Motor speed or load speed

Note: For the settings in the parameter list, no units can be converted from % into A (ampere)/ V (volt). Conversion from % into A (ampere)/V (volt) can be made in monitor mode only.

???An example of setting for changing the unit of volt/current displayed from % to A/V

Set H to  or .

When the VF-nC1-2007P inverter (current rating: 4.0A) is operated under the rated load (full-load).

*Conversion from % into A (ampere)/V (volt) can be made in status monitor mode only. For the settings in the parameter list, no units can be converted from % into A (ampere)/V (volt).

???An example of setting for displaying the motor or load speed

Set H to  or .

The value obtained by multiplying the operation frequency by the value set with H will be displayed, as shown below.

Value displayed = Frequency displayed or parameter-set frequency ??? Value set with H

1)Displaying the rotational speed of the motor

To switch from frequency (default: 60Hz) to speed (rotational speed of the 4P motor operated: 1800 (min-1)

2)Displaying the speed of the load

To switch from frequency (default: 60Hz) to speed (speed of the conveyer operated: 6m/min-1)

Note: This parameter is designed to display the value obtained by multiplying the output frequency of the inverter by an integer. Even if the rotational speed of the motor fluctuates with load conditions, the output frequency will always be displayed.

* Using H, the following parameters can be converted.

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6.15.3Changing the standard monitoring item

H : Selection of monitor display selection

??? Function

This parameter is used to change the item displayed when the power is turned on.

???When the power is turned on, the operation frequency is displayed by default like this: ?????? or ???QHH???. You can change this default monitoring item, using H. In that case, however, no prefixes (such as V and E) will be displayed.

???Parameter settings

6 6.16 Communication function (common serial)

H : Communication baud rate

H : Communication error trip time

For details, refer to the Communications Equipment User???s Manual.

??? Function

The VF-nC1 series of inverters can be connected to a host computer, controller, and so on (referred to as the computer) via RS232C or RS485 conversion units, so that they can be operated on a network. <Computer linking function> Data is exchanged between an inverter and a computer. ???Monitoring the inverter???s operation status (such as output frequency, current and voltage) ???Commands to the inverter (such as RUN and STOP commands) ???Reading, changing and writing inverter parameter settings <RS232C communications> Data is exchanged between one inverter and one computer. <RS485C communications> Data is exchanged between one computer and multiple inverters (a maximum of 64, or 63 for

binary codes)

???The following unit and cables are optionally available for common serial communications.

???RS232C conversion unit (Model: RS2001Z)

Communications cable (Model: CAB0011 (1m), CAB0013 (3m), CAB0015 (5m))

???Cable with a built-in RS232C conversion unit (Model: 20035)

???RS485C conversion unit with a terminal board (Model: RS4001Z, RS4002Z)

???Communications cable (Model: CAB0011 (1m), CAB0013 (3m), CAB0015 (5m))

Note: Use a cable 5 m or less in length to connect an inverter and an optional common serial unit.

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???Communications parameters (Common serial options)

The data transfer rate, parity type, inverter ID number and communication error trip time can be changed from the operation panel or the computer on the network.

???Data transmission specifications

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(5) Input current setting (4 to 20mAdc) (6) Preset-speed setting

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(Continued)

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8.2Display of trip information

If the inverter trips, an error code is displayed to suggest the cause. In the status monitor mode, all trip records are retained.

(Note) Past trip records (trip records retained or trips that occurred in the past) can be called up. (Refer to 8.1 "Status monitor mode" for the call-up procedure.)

(*)Strictly speaking, this code is not an error code; this code is displayed to show the absence of error when the past trip monitor mode is selected.

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(Continued)

Note 2: The FL output is held OFF in case of a trip, since the operation status immediately before the occurrence of the tip is retained by the status monitor output terminal board retention function.

Note 3: Failure trip information is cleared if the power is turned off or the inverter is reset. Therefore, the operation status is displayed and all failure information except for the cause of the failure is cleared, even if the trip information retention function is activated.

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9.Taking measures to satisfy the CE / UL / CSA

9.1Compliance with CE Marking

9.1.1Abstract

In Europe, EMC directive is enforced starting 1st Jan. of 1996, and Low Voltage Directive starting 1st Jan. of 1997. The display of CE mark that demonstrates that products imported to European Union conform to these directives is required. Inverter itself cannot function alone, but is de-signed as a component in order to control machines or equipment which includes that inverter installed in a cubicle. Therefore the conformance to EMC directive is not required on inverter it-self. But since the object of the Low Voltage directive is equipment that is designed to be used with rated voltage of 50 to 1,000 VAC or 75 to 1,500 VDC, CE should be marked on inverter as to the Low Voltage directive.

But CE has to be marked on the final product installing inverters, that conforms to the EMC directive and the Low Voltage directive. And the product also may conform to Machine directive. The user that makes the final products have to take the responsibility for Marking of CE. For that reason, we recommend installation for Low Voltage directive and measurement for EMC directive, so that the products including our inverter should conform to the EMC and Low Voltage directive.

TOSHIBA carried out Approval testing and confirmation testing on representative models under the circumstances based on installation and measurement so that our products should conform to each directive. But we cannot confirm the conformance of the user???s products to the EMC directive. Since 9 EMC environment changes according to the construction of the cubicle and the relation of other

installed electric equipment and the condition of wiring and installation, please confirm the conformance to the EMC directive for the final products on your side.

9.1.2EMC directive

An inverter itself is not an object of CE marking.

A machine which consists of an inverter and a motor is an object of CE marking.

The EMC directive includes the emission section and the immunity section. VF-NC1 can conform to EMC directive by means of installing the recommended EMI noise filter to the input side, and wiring properly.

???Emission: Emission of electromagnetic wave and electromagnetic interference

???Immunity: Resistance to electromagnetic interference

[EMC directive]

89/336/EEC

Table 1 Relative standard

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9.1.3Compliance with EMC directive

9.1.3.1The model, noise filter inside

(1)Single-phase 200V class : VFNC1S-2002PL to 2022PL

The above mentioned models install EMI noise filter inside. So the conducted and radiated noise can be reduced, optional EMI noise filters are not needed.

(The additional noise filter should be installed, when more effective reduction is required.)

(2)The main cables such as input to the EMI filter and output of the inverter and the signal cables should be shielded, then cable length should be wired as short as possible. The main input cable should be separated from the main output cable, and cables for control signal also should be separated from main cables, not wiring parallel and not bundling, cross the wires where necessary.

(3)Install EMI filter and inverter on the same metal back plate in an inverter panel. The metal back plate or the cubicle must be grounded absolutely, by using short thick wires, separated from the main cables.

(4)Shielded cables should be grounded on the metal back plate in order to reduce the radiated noise from the other cables. It is an effective measure that shielded cables are grounded close to the inverter or/and operation panel or/and EMI filter(less than 10cm).

(5)Installation of the zero-phase and/or the ferrite core can also effectively reduce the radiated noise further.(Input or/and output of inverter)

Fig. 1

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9.1.3.2 The models without EMI filters

(2)The main cables such as input to the EMI filter and output of the inverter and the signal cables should be shielded, then cable length should be wired as short as possible. The main input cable should be separated from the main output cable, and cables for control signal also should be separated from main cables, not wiring parallel and not bundling, cross the wires where necessary.

(3)Install EMI filter and inverter on the same metal back plate in an inverter panel. The metal back plate or the cubicle must be grounded absolutely, by using short thick wires, separated from the main cables.

(4)Please separate input cable to EMI filter from output cable as much as possible.

(5)Shielded cables should be grounded on the metal back plate in order to reduce the radiated noise from the other cables. It is an effective measure that shielded cables are grounded close to the inverter or/and operation panel or/and EMI filter(less than 10cm).

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(6)Installation of the zero-phase and/or the ferrite core can also effectively reduce the radiated noise further. (Input or/and output of inverter)

???Ex. Countermeasure - main circuit wiring???

Fig. 3

???Operating with external signals???

To operate with external signals, process as following figures.

Ferrite core 1

Fig. 4

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9.1.4Low voltage directive

Inverter itself is an object of the CE marking.

The Low Voltage Directive defines the safety of the electric equipment. VF-NC1 series conform to the Low Voltage directive based on EN50178.

EN50178 provides that for electronic equipment used in power installations. The main intention is to stipulate minimum requirements for the design and manufacture of electronic equipment, for protection against electric shock, for testing and for the integration into systems for power installations.

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9.1.5Compliance with Low voltage directive

Please carry out the below mentioned countermeasures for the Low Voltage Directive in case of using VF-NC1 as components of your products.

(1)Inverter should be installed in a panel. Pay attention to wiring openings, so that it should prevent someone from touching live parts through the opening in case of maintenance.

(2)No more than 1 cable should be connected to one earth terminal of the main terminal board. In this case, other cables for ground should be grounded on the metal back plate and/or in the cubicle. The cross-sectional area of grounding cable shall be, in any case, not less than;

(3)MCCB or fuse should be connected to the input side of the EMI filter.

9.2Compliance with UL Standard and CSA Standard

The VF-NC1 models, that conform to the UL Standard and CSA Standard have the UL/CSA mark on the nameplate.

9.2.1Compliance with Installation

The VF-NC1 inverter must be installed in a panel, and used within the ambient temperature specification.

They can be used at ambient temperature of up to 50 degrees by peeling off the label on the top of the inverter.

9.2.2Compliance with Connection

Use the UL conformed cables (Rating 75??? or more) with the ring terminal at wiring to the inverter input/ output terminals (R/L1, S/L2, T/L3, U/T1, V/T2, W/T3).

9.2.3Compliance with Peripheral devices

Use the UL listed fuses at connecting to power supply.

Refer to the instruction manual about selecting the rating of them.

Short circuit test is performed under the condition of the power supply short-circuit currents in below.

These currents and fuse currents depend on the applicable motor capacities.

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10.1Selection of wiring materials and devices

Note 1: Sizes of the wires connected to the input terminals R, S and T and the output terminals U, V and W when the length of each wire does not exceed 30m.

Note 2: For the control circuit, use shielded wires 0.75 mm2 or more in diameter.

Note 3: For grounding, use a cable with a size equal to or larger than the above.

Note 4: When using a crimp terminal, cover its caulked part with a tube or use an insulated terminal.

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contacts 2a in parallel to increase reliability.

Of the wiring devices listed in the above table, the magnetic contactors (MC) and the overload relays (Th-Ry) are intended for use with the Mighty J series. When using the old series (ESPER Mighty series), refer to the table below showing the correspondence between the two series.

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10.2Installation of a magnetic contactor

If using the inverter without installing a magnetic contactor (MC) in the primary circuit, use an MCCB (with a power cutoff device) to open the primary circuit when the inverter protective circuit is activated.

???Magnetic contactor in the primary circuit

A magnetic contactor, if installed in the power supply circuit of the inverter, cuts off the power supply to the circuit and prevents the inverter from restarting, in the event of a power failure, a trip of the overload relay (thermal relay) or the activation of the inverter protective circuit.

In addition, if the FL contact of the failure detection relay in the VF-nC1 is connected to the operation circuit of the magnetic contactor on the primary side, the magnetic contactor (MC) will be tripped when the inverter protective circuit is activated.

Notes on wiring

???When frequently switching between start and stop, do not use the magnetic contactor on the primary side as an on-off switch for the inverter. Instead, stop and start the inverter by using terminals F and CC (forward run) or R and CC (reverse run).

???Be sure to attach a surge killer to the exciting coil of the magnetic contactor (MC).

???Magnetic contactor in the secondary circuit

A magnetic contactor may be installed on the secondary side to switch controlled motors or supply commercial power to the load when the inverter is out of operation.

Notes on wiring

???Be sure to interlock the magnetic contactor on the secondary side with the power supply to prevent commercial power from being applied to the inverter output terminals.

???When installing a magnetic contactor (MC) between the inverter and the motor, avoid turning the magnetic contactor on or off during operation. Turning the magnetic contactor on or off during operation causes a current to rush into the inverter which could lead to malfunction.

10.3Installation of an overload relay

1)The VF-nC1 inverter has an electronic-thermal overload protective function. In the following cases, however, the activation level of the electronic thermal protection unit must be adjusted and an overload relay suitable for the motor installed between the inverter and the motor.

???When using a motor with a current rating different to that of the corresponding Toshiba general-purpose motor

???When operating a single motor with an output smaller than that of the applicable standard motor or more than one motor simultaneously

2)When using the VF-nC1 inverter to operate a constant-torque motor, such as the Toshiba VF motor, adjust the protection characteristic of the electronic thermal protection unit to the VF motor use.

3)It is recommended to use a motor with a thermal relay embedded in the motor coil to give sufficient protection to the motor, especially when it runs in a low-speed range.

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*1: This parameter is valid only for VFNC1 (S)-????????????P???-W type.

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*2: The value is changed according to the set-up parameter condition. (VFNC1 (S)-????????????P???-W type)

FH:80, UL80, VL:60, F127:0, F170:60, F171:200, F204:80, F409:200, F417:1710 for VFNC1 (S)-?????????

???P??? type.

*3: Parameter values vary depending on the capacity. Refer to page K-8.

*4: ??? : Applicable, ?? : Inapplicable

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11.3Extended parameters

??? Input/output parameters

*2: The value is changed according to the set-up parameter condition. (VFNC1 (S)-????????????P???-W type)

FH:80, UL80, VL:60, F127:0, F170:60, F171:200, F204:80, F409:200, F417:1710 for VFNC1 (S)-?????????

???P??? type.

*3: Parameter values vary depending on the capacity. Refer to page K-8.

*5: This function is enabled if F109 is set at 2 (logic input).

*6: This function is enabled if FMSL (open collector output) is set at 1.

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*2: The value is changed according to the set-up parameter condition. (VFNC1 (S)-????????????P???-W type)

FH:80, UL80, VL:60, F127:0, F170:60, F171:200, F204:80, F409:200, F417:1710 for VFNC1 (S)-?????????

???PL-??? type.

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*2: The value is changed according to the set-up parameter condition. (VFNC1 (S)-????????????P???-W type)

FH:80, UL80, VL:60, F127:0, F170:60, F171:200, F204:80, F409:200, F417:1710 for VFNC1 (S)-?????????

???P??? type.

*3: Parameter values vary depending on the capacity. Refer to page K-8.

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*Adjustment range of the above mention can set by the computer on the network. The operation panel can set to the maximum 9999.

???Factory setting parameter

*This function is effective after software version V110.

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???Default settings by inverter rating

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???Table of input terminal functions 1

K-9

*This function is effective after software version V110.

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???Table of output terminal functions 1

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???Order of precedence of combined functions

*For the functions of combined terminals (combined functions), refer to the table of their respective functions.

K-12

Note)1. Above 40??C: Remove the protective seal from the top of VF-nC1.

Note)2. When installing inverters side by side (without allowing space between them), detach the label on the top surface of each inverter and use them where the ambient temperature is below 40??C.

Note)3. Single-phase 200V models (built-in EMI noise filter) should be used where the ambient temperature will not rise above 40??C.

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13.Before making a service call??? Trip information and remedies

13.1Trip causes/warnings and remedies

When a problem arises, diagnose it in accordance with the following table. If it is found that replacement of parts is required or the problem cannot be solved by any remedy described in the table, contact your Toshiba dealer.

[Trip information: FL relay activated]

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M-2

(Continued overleaf)

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(Continued)

* With a parameter, you can choose between trip-on and -off.

[Alarm information] Each message in the table is displayed to give a warning but does not cause the inverter to trip.

If two or more problems arise simultaneously, one of the following alarms appears and blinks.

ER, RN, ERN

The blinking alarms E, R, N, J are displayed in this order from left to right.

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13.2Restoring the inverter from a trip

Do not reset the inverter when tripped because of a failure or error before eliminating the cause. Resetting the tripped inverter before eliminating the problem causes it to trip again.

The inverter can be restored from a trip by any of the following operations:

(1)By turning off the power (Keep the inverter off until the LED turns off.) Note) Refer to 6.1 4.2 (inverter trip retention selection H) for details.

(2)By means of an external signal [Short-circuiting of control terminals RST and CC (Assignment of functions to input terminals is necessary)]

(3)By operation panel operation

(4)By inputting a trip clear signal from a remote input device

(Refer to the Communications Equipment User???s Manual for details.)

To reset the inverter by operation panel operation, follow these steps.

1.Press the STOP key and make sure that ENT is displayed.

2.Pressing the STOP key again will reset the inverter if the cause of the trip has already been eliminated.

???When any overload function [QN : inverter overload, QN : motor overload,] is active, the inverter cannot be reset by inputting a reset signal from an external device or by operation panel operation before the virtual cooling time has passed.

frequently.

???If the inverter trips because of overheating (QJ), do not reset the inverter immediately but wait until the temperature in the inverter comes down, because its internal temperature is monitored.

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13.4How to determine the causes of other problems

The following table provides a listing of other problems, their possible causes and remedies.

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14. Inspection and maintenance

???Before inspection, perform the following steps. ???Shut off all input power to the inverter.

???Wait for at least 15 minutes and check that the charge lamp is no longer lit.

???Use a tester that can measure DC voltages (800V DC or more), and check that the

voltage to the DC main circuits (across PA-PC) does not exceed 45V.

Performing an inspection without carrying out these steps first could lead to electric shock.

Be sure to inspect the inverter regularly and periodically to prevent it from breaking down because of the environment of use, such as temperature, humidity, dust and vibration, or deterioration of its components with aging.

14.1Regular inspection

Since electronic parts are susceptible to heat, install the inverter in a cool, well-ventilated and dust- free place. This is essential for increasing the service life.

The purpose of regular inspections is to maintain the correct environment of use and to find any sign of failure or malfunction by comparing current operation data with past operation records.

*) The voltage measured may slightly vary from voltmeter to voltmeter. When measuring the voltage, always take readings from the same circuit tester or voltmeter.

???Check points

1.Something unusual in the installation environment

2.Something unusual in the cooling system

3.Unusual vibration or noise

4.Overheating or discoloration

5.Unusual odor

6.Unusual motor vibration, noise or overheating

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14.2Periodical inspection

Make a periodical inspection at intervals of 3 or 6 months depending on the operating conditions.

Danger

??? Before inspection, perform the following steps.

voltage to the DC main circuits (across PA-PC) does not exceed 45V.

Performing an inspection without carrying out these steps first could lead to electric shock.

???Never replace any part.

This could be a cause of electric shock, fire or bodily injury. To replace parts, call the local

and test the inverter separately from other equipment.

500V insulation tester (megger)

7.Never test the inverter for pressure. A pressure test may cause damage to its components.

8.Voltage and temperature check

It will be very helpful for detecting a defect if you always measure and record the ambient temperature before, during and after the operation.

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???Replacement of expendable parts

The inverter is composed of a large number of electronic parts including semiconductor devices. The following parts deteriorate with the passage of time because of their composition or physical properties. The use of aged or deteriorated parts leads to degradation in the performance or a breakdown of the inverter. To avoid such trouble, the inverter should be checked periodically.

No parts of the inverter except the cooling fan can be replaced individually, and the whole inverter needs to be replaced if a significant defect is found in it.

Note) Generally, the life of a part depends on the ambient temperature and the conditions of use. The life spans listed below are applicable to parts when used under normal environmental conditions.

1)Cooling fan

The fan, which cools down heat-generating parts, has a service life of about 30,000 hours (about 2 or 3 years of continuous operation). The fan also needs to be replaced if it makes a noise or vibrates abnormally.

2)Smoothing capacitor

The smoothing aluminum electrolytic capacitor in the main circuit DC section degrades in performance because of ripple currents, etc. It becomes necessary to replace the capacitor after it is used for about 5 years under normal conditions.

<Criteria for appearance check>

???Absence of liquid leak

???Safety valve in the depressed position

???Measurement of electrostatic capacitance and insulation resistance

Note: For the replacement of consumable parts, ask your nearest Toshiba branch or office.

The operation time is helpful for roughly determining the time of replacement. For the replacement of parts, contact the service network or Toshiba branch office printed on the back cover of this instruction manual.

???Standard replacement cycles of principal parts

(Extract from "Guide to periodical inspections of general-purpose inverters" issued by the Japan Electrical Manufacturers??? Association.)

Note) The life of a part greatly varies depending on the environment of use.

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14.3Making a call for servicing

For the Toshiba service network, refer to the back cover of this instruction manual. If defective conditions are encountered, please contact the Toshiba service section in charge via your Toshiba dealer.

When making a call for servicing, please inform us of the contents of the rating label on the right panel of the inverter, the presence or absence of optional devices, etc., in addition to the details of the failure.

14.4Keeping the inverter in storage

Take the following precautions when keeping the inverter in storage temporarily or for a long period of time.

1.Store the inverter in a well-ventilated place away from heat, damp, dust and metal powder.

2.If the printed circuit board in your inverter has an anti-static cover (black cover), do not leave it detached from the circuit board during storage, though the cover must be detached before turning on the inverter.

3.If no power is supplied to the inverter for a long time, the performance of its large-capacity electrolytic capacitor declines.

When leaving the inverter unused for a long time, supply it with electricity once every two years, for 5 hours or more each, to recover the performance of the large-capacity electrolytic capacitor and also to check the function of the inverter. It is advisable not to supply the commercial power directly to the inverter but to gradually increase the power supply voltage with a transformer, etc.

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15. Warranty

Any part of the inverter that proves defective will be repaired and adjusted free of charge under the following conditions:

1.This warranty applies only to the inverter main unit.

2.Any part of the inverter which fails or is damaged under normal use within twelve months from the date of delivery shall be repaired free of charge.

3.For the following kinds of failure or damage, the repair cost shall be borne by the customer even within the warranty period.

???Failure or damage caused by improper or incorrect use or handling, or unauthorized repair or modification of the inverter

???Failure or damage caused by the inverter falling or an accident during transportation after the purchase

???Failure or damage caused by fire, salty water or wind, corrosive gas, earthquake, storm or flood, lightning, abnormal voltage supply, or other natural disasters

???Failure or damage caused by the use of the inverter for any purpose or application other than the intended one

4.All expenses incurred by Toshiba for on-site services shall be charged to the customer, unless a service contract is signed beforehand between the customer and Toshiba, in which case the service contract has priority over this warranty.

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16. Disposal of the inverter

Warning

???If you throw away the inverter, have it done by a specialist in industry waste disposal*. If you throw away the inverter by yourself, this can result in explosion of

(*)Persons who specialize in the processing of waste and known as "industrial waste product collectors and transporters" or "industrial waste disposal persons."

If the collection, transport and disposal of industrial waste is done by someone who is not licensed for that job, it is a punishable violation of the law. (Law on Waste Disposal and Cleaning)

For safety???s sake, do not dispose of the disused inverter yourself but ask an industrial waste disposal agent.

Disposing of the inverter improperly could cause its capacitor to explode and emit toxic gas, causing injury to persons.

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