Omron 3G3JV Series, 3G3JV-A2004-A, 3G3JV-A2001-A, 3G3JV-A2002-A, 3G3JV-A2007-A User Manual

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Instra

USER’S MANUAL

SYSDRIVE 3G3JVSERIES

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Compact Simplified Inverter

Thank you for choosing this SYSDRIVE 3G3JV-series product. Proper use
and handling of the product will ensure proper product performance, will
lengthen product life, and may prevent possible accidents.
Please read this manual thoroughly and handle and operate the product
with care.

NOTICE

1. This manual describes the functions of the product and relations with other
products. You should assume that anything not described in this manual is
not possible.

2. Although care has been given in documenting the product, please contact your
OMRON representative if you have any suggestions on improving this manual.

3. The product contains potentially dangerous parts under the cover. Do not attempt
to open the cover under any circumstances. Doing so may result in injury or death
and may damage the product. Never attempt to repair or disassemble the product.

4. We recommend that you add the following precautions to any instruction manuals
you prepare for the system into which the product is being installed.

S Precautions on the dangers of high-voltage equipment.
S Precautions on touching the terminals of the product even after power has been

turned OFF. (These terminals are live even with the power turned OFF.)

5. Specifications and functions may be changed without notice in order to improve
product performance.

Items to Check Before Unpacking

Check the following items before removing the product from the package:

S Has the correct product been delivered (i.e., the correct model number and speci-

fications)?

S Has the product been damaged in shipping?

S Are any screws or bolts loose?

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Notice:

OMRON products are manufactured for use according to proper procedures by a qualified
operator and only for the purposes described in this manual.

The following conventions are used to indicate and classify precautions in this manual. Al­ways heed the information provided with them. Failure to heed precautions can result in inju­ry to people or damage to property.

DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death

or serious injury.

WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death

or serious injury.

Caution Indicates a potentially hazardous situation which, if not avoided, may result in minor

or moderate injury, or property damage.

OMRON Product References

All OMRON products are capitalized in this manual. The word “Unit” is also capitalized when
it refers to an OMRON product, regardless of whether or not it appears in the proper name
of the product.

The abbreviation “Ch,” which appears in some displays and on some OMRON products,
often means “word” and is abbreviated “Wd” in documentation in this sense.

The abbreviation “PC” means Programmable Controller and is not used as an abbreviation
for anything else.

Visual Aids

The following headings appear in the left column of the manual to help you locate different
types of information.

Note Indicates information of particular interest for efficient and convenient operation of the product.

 OMRON, 1999

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted,
in any form, or by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior
written permission of OMRON.

No patent liability is assumed with respect to the use of the information contained herein. Moreover, because
OMRON is constantly striving to improve its high-quality products, the information contained in this manual
is subject to change without notice. Every precaution has been taken in the preparation of this manual. Never­theless, OMRON assumes no responsibility for errors or omissions. Neither is any liability assumed for dam­ages resulting from the use of the information contained in this publication.

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General Precautions

Observe the following precautions when using the SYSDRIVE Inverters and peripheral de­vices.

This manual may include illustrations of the product with protective covers removed in order
to describe the components of the product in detail. Make sure that these protective covers
are on the product before use.

Consult your OMRON representative when using the product after a long period of storage.

WARNING Do not touch the inside of the Inverter. Doing so may result in electrical shock.

WARNING Operation, maintenance, or inspection must be performed after turning OFF the

power supply, confirming that the CHARGE indicator (or status indicators) are OFF,
and after waiting for the time specified on the front cover. Not doing so may result in
electrical shock.

WARNING Do not damage, pull on, apply stress to, place heavy objects on, or pinch the cables.

Doing so may result in electrical shock.

WARNING Do not touch the rotating parts of the motor under operation. Doing so may result in

injury.

WARNING Do not modify the product. Doing so may result in injury or damage to the product.

Caution Do not store, install, or operate the product in the following places. Doing so may

result in electrical shock, fire or damage to the product.

S Locations subject to direct sunlight.
S Locations subject to temperatures or humidity outside the range specified in the

specifications.

S Locations subject to condensation as the result of severe changes in temperature.
S Locations subject to corrosive or flammable gases.
S Locations subject to exposure to combustibles.
S Locations subject to dust (especially iron dust) or salts.
S Locations subject to exposure to water, oil, or chemicals.
S Locations subject to shock or vibration.

Caution Do not touch the Inverter radiator, regenerative resistor, or Servomotor while the

power is being supplied or soon after the power is turned OFF. Doing so may result in
a skin burn due to the hot surface.

Caution Do not conduct a dielectric strength test on any part of the Inverter. Doing so may

result in damage to the product or malfunction.

Caution Take appropriate and sufficient countermeasures when installing systems in the fol-

lowing locations. Not doing so may result in equipment damage.

S Locations subject to static electricity or other forms of noise.
S Locations subject to strong electromagnetic fields and magnetic fields.
S Locations subject to possible exposure to radioactivity.
S Locations close to power supplies.

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Transportation Precautions

Caution Do not hold by front cover or panel , instead, hold by the radiation fin (heat sink) while

transporting the product. Doing so may result in injury.

Caution Do not pull on the cables. Doing so may result in damage to the product or malfunc-

tion.

Caution Use the eye-bolts only for transporting the Inverter. Using them for transporting the

machinery may result in injury or malfunction.

Installation Precautions

WARNING Provide an appropriate stopping device on the machine side to secure safety. (A

holding brake is not a stopping device for securing safety.) Not doing so may result in
injury.

WARNING Provide an external emergency stopping device that allows an instantaneous stop of

operation and power interruption. Not doing so may result in injury.

Caution Be sure to install the product in the correct direction and provide specified clear-

ances between the Inverter and control panel or with other devices. Not doing so
may result in fire or malfunction.

Caution Do not allow foreign objects to enter inside the product. Doing so may result in fire or

malfunction.

Caution Do not apply any strong impact. Doing so may result in damage to the product or

malfunction.

Wiring Precautions

WARNING Wiring must be performed only after confirming that the power supply has been

turned OFF. Not doing so may result in electrical shock.

WARNING Wiring must be performed by authorized personnel. Not doing so may result in

electrical shock or fire.

WARNING Be sure to confirm operation only after wiring the emergency stop circuit. Not doing

so may result in injury.

WARNING Always connect the ground terminals to a ground of 100 Ω or less for the 200-V AC

class, or 10 Ω or less for the 400-V AC class. Not connecting to a proper ground may
result in electrical shock.

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Caution Install external breakers and take other safety measures against short-circuiting in

external wiring. Not doing so may result in fire.

Caution Confirm that the rated input voltage of the Inverter is the same as the AC power sup-

ply voltage. An incorrect power supply may result in fire, injury, or malfunction.

Caution Connect the Braking Resistor and Braking Resistor Unit as specified in the manual.

Not doing so may result in fire.

Caution Be sure to wire correctly and securely. Not doing so may result in injury or damage to

the product.

Caution Be sure to firmly tighten the screws on the terminal block. Not doing so may result in

fire, injury, or damage to the product.

Caution Do not connect an AC power to the U, V, or W output. Doing so may result in damage

to the product or malfunction.

Operation and Adjustment Precautions

WARNING Turn ON the input power supply only after mounting the front cover, terminal covers,

bottom cover, Operator, and optional items. Not doing so may result in electrical
shock.

WARNING Do not remove the front cover, terminal covers, bottom cover, Operator, or optional

items while the power is being supplied. Not doing so may result in electrical shock or
damage to the product.

WARNING Do not operate the Operator or switches with wet hands. Doing so may result in

electrical shock.

WARNING Do not touch the inside of the Inverter. Doing so may result in electrical shock.

WARNING Do not come close to the machine when using the error retry function because the

machine may abruptly start when stopped by an alarm. Doing so may result in injury.

WARNING Do not come close to the machine immediately after resetting momentary power

interruption to avoid an unexpected restart (if operation is set to be continued in the
processing selection function after momentary power interruption is reset). Doing so
may result in injury.

WARNING Provide a separate emergency stop switch because the STOP Key on the Operator

is valid only when function settings are performed. Not doing so may result in injury.

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WARNING

Be sure confirm that the RUN signal is turned OFF before turning ON the power
supply, resetting the alarm, or switching the LOCAL/REMOTE selector. Doing so
while the RUN signal is turned ON may result in injury.

Caution Be sure to confirm permissible ranges of motors and machines before operation be-

cause the Inverter speed can be easily changed from low to high. Not doing so may
result in damage to the product.

Caution Provide a separate holding brake when necessary. Not doing so may result in injury.

Caution Do not perform a signal check during operation. Doing so may result in injury or dam-

age to the product.

Caution Do not carelessly change settings. Doing so may result in injury or damage to the

product.

Maintenance and Inspection Precautions

WARNING Do not touch the Inverter terminals while the power is being supplied.

WARNING Maintenance or inspection must be performed only after turning OFF the power

supply, confirming that the CHARGE indicator (or status indicators) is turned OFF,
and after waiting for the time specified on the front cover. Not doing so may result in
electrical shock.

WARNING Maintenance, inspection, or parts replacement must be performed by authorized

personnel. Not doing so may result in electrical shock or injury.

WARNING Do not attempt to take the Unit apart or repair. Doing either of these may result in

electrical shock or injury.

Caution Carefully handle the Inverter because it uses semiconductor elements. Careless

handling may result in malfunction.

Caution Do not change wiring, disconnect connectors, the Operator, or optional items, or re-

place fans while power is being supplied. Doing so may result in injury, damage to
the product, or malfunction.

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Warning Labels

Warning labels are pasted on the product as shown in the following illustration. Be sure to
follow the instructions given there.

H Warning Labels

Warning label

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H Contents of Warning

S For 3G3JV-A2001-A to model -A2007-A (0.1 to 0.75 kW) and 3G3JV-AB001-A to

-AB004-A (0.1 to 0.4 kW):

S For 3G3JV-A2015-A to model -A2037-A (1.5 to 3.7 kW), 3G3JV-AB007-A to

-AB015-A (0.75 to 1.5 kW), and 3G3JV-A4002-A to -A4037-A (0.2 to 3.7 kW):

Checking Before Unpacking

H Checking the Product

On delivery, always check that the delivered product is the SYSDRIVE 3G3JV Inverter that you ordered.

Should you find any problems with the product, immediately contact your nearest local sales
representative.

D Checking the Nameplate

Inverter model

Input specifications
Output specifications

D Checking the Model

3G3JV-A2007-A

Maximum applicable motor capacity

Voltage class

Installation type

Series name: 3G3JV Series

North American Specification

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Maximum Applicable Motor Capacity

001 0.1 (0.1) kW
002 0.25/0.37 (0.2) kW
004 0.55 (0.4) kW
007 1.1 (0.75) kW
015 1.5 (1.5) kW
022 2.2 (2.2) kW
037 3.7 (3.7) kW

Note The figures in parentheses indicate capacities for motors used outside Japan.

Voltage Class

2 Three-phase 230-V AC input (230-V class)
B Single-phase 230-V AC input (230-V class)
4 Three-phase 460-V AC input (460-V class)

Installation Type

A Panel-mounting models (IP10 min.) or

Closed wall mounting

D Checking for Damage

Check the overall appearance and check for damage or scratches resulting from transportation.

H Checking the Accessories

This manual is the only accessory provided with the 3G3JV. Set screws and other necessary parts must
be provided by the user.

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About this Manual

This manual is divided into the chapters described in the following table. Information is organized by
application area to enable you to use the manual more efficiently.

Chapter Contents

Chapter 1 Overview Describes features and nomenclature.
Chapter 2 Design Provides dimensions, installation methods, wiring methods, peripheral

device design information, and peripheral device selection information.

Chapter 3 Preparing for Operation
and Monitoring

Describes nomenclature and Digital Operator procedures for operating
and monitoring Inverters.

Chapter 4 Test Run Describes the method for controlling a motor through the frequency

adjuster on the front of the Inverter. This can be used for trial
operation of the system.

Chapter 5 Basic Operation Describes basic Inverter control functions for users not familiar with

Inverters. The functions that must be understood to drive a motor with
an Inverter are described.

Chapter 6 Advanced Operation Describes all of the functions provided by the Inverter. These functions

will enable more advanced applications, and includes functions that
will improve motor control through the Inverter, such as
responsiveness (torque characteristics), increasing speed accuracy,
PID control, overtorque detection, and other functions.

Chapter 7 Maintenance Operations Provides maintenance, inspection, and troubleshooting information.
Chapter 8 Specifications Provides Inverter specifications, as well as the specifications and

dimensions of peripheral devices.

Chapter 9 List of Parameters Lists basic information on Inverter parameters as a reference for users

already familiar with Inverter operation. Parameters are listed in order
with the page numbers of further information for easy reference.

Chapter 10 Using the Inverter for a
Motor

Describes information on using the Inverter for a motor.

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Table of Contents

xiii

Chapter 1. Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1 Function 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2 Nomenclature 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 2. Design 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1 Installation 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1-1 Dimensions 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1-2 Installation Conditions 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2 Wiring 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2-1 Removing and Mounting the Covers 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2-2 Terminal Block 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2-3 Standard Connections 2-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2-4 Wiring around the Main Circuit 2-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2-5 Wiring Control Circuit Terminals 2-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2-6 Conforming to EC Directive 2-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 3. Preparing for Operation and Monitoring 3-1. . . . . . . . . . . . .

3-1 Nomenclature 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2 Outline of Operation 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 4. Test Run 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1 Procedure for Test Run 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-2 Operation Example 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 5. Basic Operation 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1 Initial Settings 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2 V/f Control 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3 Setting the Local/Remote Mode 5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-4 Selecting the Operation Command 5-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5 Setting the Frequency Reference 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5-1 Selecting the Frequency Reference 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5-2 Upper and Lower Frequency Reference Limits 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5-3 Adjusting the Analog Input 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5-4 Setting Frequency References through Key Sequences 5-10. . . . . . . . . . . . . . . . . . . . . . . .

5-6 Setting the Acceleration/Deceleration Time 5-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-7 Selecting the Reverse Rotation-prohibit 5-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-8 Selecting the Interruption Mode 5-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-9 Multi-function I/O 5-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-9-1 Multi-function Input 5-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-9-2 Multi-function Output 5-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-10 Analog Monitor Output 5-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 6. Advanced Operation 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-1 Setting the Carrier Frequency 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-2 DC Injection Braking Function 6-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-3 Stall Prevention Function 6-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-4 Overtorque Detection Function 6-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Table of Contents

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6-5 Torque Compensation Function 6-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-6 Slip Compensation Function 6-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7 Other Functions 6-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7-1 Motor Protection Characteristics (n33 and n34) 6-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7-2 Cooling Fan Operation Function (n35) 6-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7-3 Momentary Power Interruption Compensation (n47) 6-15. . . . . . . . . . . . . . . . . . . . . . . . .

6-7-4 Fault Retry (n48) 6-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7-5 Frequency Jump Function (n49 to n51) 6-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7-6 Frequency Detection Function 6-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7-7 UP/DOWN Command Frequency Memory (n62) 6-19. . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7-8 Error History (n78) 6-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 7. Maintenance Operations 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . .

7-1 Protective and Diagnostic Functions 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-1-1 Fault Detection (Fatal Error) 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-1-2 Warning Detection (Nonfatal Error) 7-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2 Troubleshooting 7-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2-1 Parameters Fail Set 7-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2-2 Motor Fails to Operate 7-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2-3 Motor Rotates in the Wrong Direction 7-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2-4 Motor Outputs No Torque or Acceleration is Slow 7-10. . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2-5 Motor Deceleration is Slow 7-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2-6 Motor Burns 7-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2-7 Controller or AM Radio Receives Noise when Inverter is Started 7-11. . . . . . . . . . . . . . .

7-2-8 Ground Fault Interrupter is Actuated when Inverter is Started 7-11. . . . . . . . . . . . . . . . . .

7-2-9 Mechanical Vibration 7-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2-10 Motor Rotates after Output of Inverter is Turned Off 7-12. . . . . . . . . . . . . . . . . . . . . . . . .

7-2-11 Detects OV when Motor Starts and Motor Stalls 7-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2-12 Output Frequency Does Not Reach Frequency Reference 7-13. . . . . . . . . . . . . . . . . . . . . .

7-2-13 Inverter Does Not Run Because EF is Detected, or Motor Rotates Momentarily

While Control Device Power is OFF 7-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-3 Maintenance and Inspection 7-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 8. Specifications 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-1 Inverter Specifications 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-2 Specifications of Accessories 8-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-2-1 List of Accessories 8-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-2-2 Fan Unit 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-2-3 Scaling Meter 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-2-5 DIN Track Mounting Bracket 8-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-3 Option Specifications 8-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-3-1 EMC-compatible Noise Filter 8-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 9. List of Parameters 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 10. Using the Inverter for a Motor 10-1. . . . . . . . . . . . . . . . . . . . .

Revision History R-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Chapter 1

Overview

1-1 Function
1-2 Nomenclature

1

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1-2

1-1 Function

The compact simple SYSDRIVE 3G3JV-Series Inverter ensures greater ease of use
than any conventional model.
The 3G3JV Inverter meets EC Directives and UL/cUL standard requirements for world­wide use.

H SYSDRIVE 3G3JV Inverter Models

• The following 3-phase and single-phase 230-V AC-class, and 3-phase 460-V AC-class 3G3JV mod­els are available.

Rated voltage Protective structure Maximum applied

motor capacity

Model

3-phase 230 V AC Panel-mounting models

0.1 (0.1) kW 3G3JV-A2001-A

g

(conforming to IP20)

0.25 (0.2) kW 3G3JV-A2002-A

0.55 (0.4) kW 3G3JV-A2004-A

1.1 (0.75) kW 3G3JV-A2007-A

1.5 (1.5) kW 3G3JV-A2015-A

2.2 (2.2) kW 3G3JV-A2022-A

3.7 (3.7) kW 3G3JV-A2037-A

Single-phase 230 V AC Panel-mounting models

0.1 (0.1) kW 3G3JV-AB001-A

g

g

(conforming to IP20)

0.25 (0.2) kW 3G3JV-AB002-A

0.55 (0.4) kW 3G3JV-AB004-A

1.1 (0.75) kW 3G3JV-AB007-A

1.5 (1.5) kW 3G3JV-AB015-A

3-phase 460 V AC Panel-mounting models

0.37 (0.2) kW 3G3JV-A4002-A

g

(conforming to IP20)

0.55 (0.4) kW 3G3JV-A4004-A

1.1 (0.75) kW 3G3JV-A4007-A

1.5 (1.5) kW 3G3JV-A4015-A

2.2 (2.2) kW 3G3JV-A4022-A

3.7 (3.7) kW 3G3JV-A4037-A

Note 1. The figures in parentheses indicate capacities for motors used outside Japan.

Note 2. It is not possible to connect a Braking Resistor or Braking Unit to a 3G3JV-series Inverter.

Select an Inverter from another series if the application requires braking control.

H International Standards (EC Directives and UL/cUL Standards)

The 3G3JV Inverter meets the EC Directives and UL/cUL standard requirements for worldwide use.

Classification Applicable standard

EC Directives

EMC Directive EN50081-2 and EN5008-2
Low-voltage Directive prEN50178

UL/cUL UL508C

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1-3

H Versatile Easy-to-use Functions

• Incorporates the functions and operability ensured by the conventional 3G3EV Series.

• Easy to initialize and operate with the FREQ adjuster on the Digital Operator.

• Ease of maintenance. The cooling fan is easily replaceable. The life of the cooling fan can be pro-

longed by turning on the cooling fan only when the Inverter is in operation.

H Suppression of Harmonics

Connects to DC reactors, thus suppressing harmonics more effectively than conventional AC reactors.

Further improvement in the suppression of harmonics is possible with the combined use of the DC and
AC reactors.

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1-4

1-2 Nomenclature

H Panel

Terminal
block

Top protection cover

Mounting holes
(Two)

Digital Operator

ALARM display

RUN indicator

Optional cover

Front cover

Front cover
mounting screw

Bottom protection
cover

Terminal
block

U-shaped
cutouts
(Two)

Note 1. The front cover functions as a terminal cover. The Digital Operator Unit cannot be removed.

Note 2. Instead of mounting holes, each of the following models has two U-shaped cutouts located

diagonally.
3G3JV-A2001

-A (0.1 kW), 3G3JV-A2002-A (0.25 kW), 3G3JV-A2004-A (0.55 kW), and

3G3JV-A2007

-A (1.1 kW) 3G3JV-AB001-A (0.1 kW), 3G3JV-AB002-A (0.25 kW), and

3G3JV-AB004

-A (0.55 kW)

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1-5

H Digital Operator

Data display

Keys

Indicators
(Setting/Monitor
item indicators)

FREQ adjuster

Appearance Name Function

Data display Displays relevant data items, such as frequency reference,

output frequency, and parameter set values.

FREQ adjuster Sets the frequency reference within a range between 0 Hz

and the maximum frequency.

FREF indicator The frequency reference can be monitored or set while this

indicator is lit.

FOUT indicator The output frequency of the Inverter can be monitored

while this indicator is lit.

IOUT indicator The output current of the Inverter can be monitored while

this indicator is lit.

MNTR indicator The values set in U01 through U10 are monitored while

this indicator is lit.

F/R indicator The direction of rotation can be selected while this

indicator is lit when operating the Inverter with the RUN
Key.

LO/RE indicator The operation of the Inverter through the Digital Operator

or according to the set parameters is selectable while this
indicator is lit.

Note This status of this indicator can be only monitored

while the Inverter is in operation. Any RUN command
input is ignored while this indicator is lit.

PRGM indicator The parameters in n01 through n79 can be set or

monitored while this indicator is lit.

Note While the Inverter is in operation, the parameters can

be only monitored and only some parameters can be
changed. Any RUN command input is ignored while
this indicator is lit.

Mode Key Switches the setting and monitor item indicators in

sequence.

Parameter being set will be canceled if this key is pressed
before entering the setting.

Increment Key Increases multi-function monitor numbers, parameter

numbers, and parameter set values.

Decrement Key Decreases multi-function monitor numbers, parameter

numbers, and parameter set values.

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1-6

Appearance FunctionName

Enter Key Enters multi-function monitor numbers, parameter

numbers, and internal data values after they are set or
changed.

RUN Key Starts the Inverter running when the 3G3JV is in operation

with the Digital Operator.

STOP/RESET Key Stops the Inverter unless parameter n06 is set to disable

the STOP Key. Functions as a Reset Key when an Inverter
error occurs. (See note.)

Note For safety reasons, the reset will not work while a RUN command (forward or reverse) is in effect.

Wait until the RUN command is OFF before resetting the Inverter.

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Chapter 2

Design

2-1 Installation
2-2 Wiring

2

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2-2

2-1 Installation

2-1-1 Dimensions

D 3G3JV-A2001-A to 3G3JV-A2007-A (0.1 to 0.75 kW) 3-phase 230-V AC Input

3G3JV-AB001-A to 3G3JV-AB004-A (0.1 to 0.4 kW) Single-phase 230-V AC Input

t

Rated voltage Model 3G3JV-

Dimensions (mm)

Weight (kg)

g

D t

g(g)

3-phase 230 V AC

A2001-A 70 3 Approx. 0.5
A2002-A 70 3 Approx. 0.5
A2004-A 102 5 Approx. 0.8
A2007-A 122 5 Approx. 0.9

Single-phase 230 V AC

AB001-A 70 3 Approx. 0.5

g

AB002-A 70 3 Approx. 0.5
AB004-A 112 5 Approx. 0.9

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2-3

D 3G3JV-A2015-A to 3G3JV-A2022-A (1.5 to 2.2 kW) 3-phase 230-V AC Input

3G3JV-AB007-A to 3G3JV-AB015-A (0.75 to 1.5 kW) Single-phase 230-V AC Input
3G3JV-A4002-A to 3G3JV-A4022-A (0.2 to 2.2 kW) 3-phase 460-V AC Input

Two, 5-dia. holes

Rated voltage Model 3G3JV-

Dimensions (mm)

Weight (kg)

g

D

g(g)

3-phase 230 V AC

A2015-A 129 Approx. 1.3
A2022-A 154 Approx. 1.5

Single-phase 230 V AC

AB007-A 129 Approx. 1.5

g

AB015-A 154 Approx. 1.5

3-phase 460 V AC

A4002-A 81 Approx. 1.0
A4004-A 99 Approx. 1.1
A4007-A 129 Approx. 1.5
A4015-A 154 Approx. 1.5
A4022-A 154 Approx. 1.5

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2-4

D 3G3JV-A2037-A (3.7 kW) 3-phase 230-V AC Input

3G3JV-A4037-A (3.7 kW) 3-phase 460-V AC Input

5

6

128

140

118

128

8.5

5

D

Two, 5-dia. holes

Rated voltage Model 3G3JV-

Dimensions (mm)

Weight (kg)

g

D

g(g)

3-phase 230 V AC A2037-A 161 Approx. 2.1
3-phase 460 V AC A4037-A 161 Approx. 2.1

2-1-2 Installation Conditions

WARNING Provide an appropriate stopping device on the machine side to secure safety. (A

holding brake is not a stopping device for securing safety.) Not doing so may result in
injury.

WARNING Provide an external emergency stopping device that allows an instantaneous stop of

operation and power interruption. Not doing so may result in injury.

Caution Be sure to install the product in the correct direction and provide specified clear-

ances between the Inverter and control panel or with other devices. Not doing so
may result in fire or malfunction.

Caution Do not allow foreign objects to enter inside the product. Doing so may result in fire or

malfunction.

Caution Do not apply any strong impact. Doing so may result in damage to the product or

malfunction.

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2-5

H Installation Direction and Dimensions

• Install the Inverter under the following conditions.

Ambient temperature for operation (panel-mounting): –10°C to 50°C

Humidity: 95% or less (no condensation)

• Install the Inverter in a clean location free from oil mist and dust. Alternatively, install it in a totally en­closed panel that is completely protected from floating dust.

• When installing or operating the Inverter, always take special care so that metal powder, oil, water, or
other foreign matter does not get into the Inverter.

• Do not install the Inverter on inflammable material such as wood.

H Direction

• Install the Inverter on a vertical surface so that the characters on the nameplate are oriented upward.

H Dimensions

• When installing the Inverter, always provide the following clearances to allow normal heat dissipation
from the Inverter.

W = 30 mm min.

Inverter

100 mm min. Air

SideInverter Inverter

100 mm min. Air

H Ambient Temperature Control

• To enhance operation reliability, the Inverter should be installed in an environment free from extreme
temperature changes.

• If the Inverter is installed in an enclosed environment such as a box, use a cooling fan or air conditioner
to maintain the internal air temperature below 50°C.
The life of the built-in electrolytic capacitors of the Inverter is prolonged by maintaining the internal air
temperature as low as possible.

• The surface temperature of the Inverter may rise approximately 30°C higher than the ambient temper­ature. Be sure to keep away equipment and wires from the Inverter as far as possible if the equipment
and wires are easily influenced by heat.

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2-6

H Protecting Inverter from Foreign Matter during Installation

• Place a cover over the Inverter during installation to shield it from metal power produced by drilling.
Upon completion of installation, always remove the cover from the Inverter. Otherwise, ventilation will
be affected, causing the Inverter to overheat.

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2-7

2-2 Wiring

WARNING Wiring must be performed only after confirming that the power supply has been

turned OFF. Not doing so may result in electrical shock.

WARNING Wiring must be performed by authorized personnel. Not doing so may result in

electrical shock or fire.

WARNING Be sure to confirm operation only after wiring the emergency stop circuit. Not doing

so may result in injury.

WARNING Always connect the ground terminals to a ground of 100 Ω or less for the 200-V AC

class, or 10 Ω or less for the 400-V AC class. Not connecting to a proper ground may
result in electrical shock.

Caution Install external breakers and take other safety measures against short-circuiting in

external wiring. Not doing so may result in fire.

Caution Confirm that the rated input voltage of the Inverter is the same as the AC power sup-

ply voltage. An incorrect power supply may result in fire, injury, or malfunction.

Caution Connect the Braking Resistor and Braking Resistor Unit as specified in the manual.

Not doing so may result in fire.

Caution Be sure to wire correctly and securely. Not doing so may result in injury or damage to

the product.

Caution Be sure to firmly tighten the screws on the terminal block. Not doing so may result in

fire, injury, or damage to the product.

Caution Do not connect an AC power to the U, V, or W output. Doing so may result in damage

to the product or malfunction.

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2-8

2-2-1 Removing and Mounting the Covers

It is necessary to remove the front cover, optional cover, top protection cover, and the
bottom protection cover from the Inverter to wire the terminal block.
Follow the instructions below to remove the covers from the Inverter.
To mount the covers, take the opposite steps.

H Removing the Front Cover

• Loosen the front cover mounting screws with a screwdriver.

• Press the left and right sides of the front cover in the arrow 1 directions and lift the bottom of the cover in

the arrow 2 direction to remove the front cover as shown in the following illustration.

H Removing the Top and Bottom Protection Covers and Optional Cover

D Removing the Top and Bottom Protection Covers

• After removing the front cover, pull the top and bottom protection covers in the arrow 1 directions.

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2-9

D Removing the Optional Cover

• After removing the front cover, lift the optional cover in the arrow 2 direction based on position A as a
fulcrum.

Position A

Note The front cover functions as a terminal cover. The Digital Operator cannot be removed.

2-2-2 Terminal Block

Before wiring the terminal block, be sure to remove the front cover, top protection cover,
and the bottom protection cover.

H Position of Terminal Block

Ground terminal

Control circuit terminals

Main circuit output terminals

Main circuit input terminals

Ground terminal

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2-10

H Arrangement of Control Circuit Terminals

H Arrangement of Main Circuit Terminals

D 3G3JV-A2001-A to

3G3JV-A2007-A
3G3JV-AB001-A to
3G3JV-AB004-A

Main Circuit Input Terminals
(Upper Side)

Main Circuit Output Terminals
(Lower Side)

D 3G3JV-A2015-A to 3G3JV-A2037-A

3G3JV-AB007-A to 3G3JV-AB015-A
3G3JV-A4002-A to 3G3JV-A4037-A

Main Circuit Input Terminals
(Upper Side)

Main Circuit Output Terminals
(Lower Side)

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2-11

H Main Circuit Terminals

Symbol Name Description

R/L1

Power supply input

3G3JV-A2j: 3-phase 200 to 230 V AC

S/L2

terminals

3G3JV-ABj: Single-phase 200 to 240 V AC

-

-p

T/L3

3G3JV-A4j: 3-phase 380 to 460 V AC

Note Connect single-phase input to terminals R/L1 and S/L2.

U/T1

Motor output terminals 3-phase power supply output for driving motors.

V/T2

3G3JV-A2j: 3-phase 200 to 230 V AC

p

W/T3

3G3JV-ABj: 3-ph

ase

200 to 240 V AC

3G3JV-A4j: 3-phase 380 to 460 V AC

+1

Connection terminals +1
and +2:

Connect the DC reactor for suppressing harmonics to terminals +1
and +2.

+2

DC

reactor connection

terminals

–

When driving the Inverter with DC power, input the DC power to
terminals +1 and –.

p

–

+1 and –:

DC power supply input
terminals

(Terminal +1 is a positive terminal.)

Ground terminal Be sure to ground the terminal under the following conditions.

3G3JV-A2j: Ground at a resistance of 100 Ω or less.

3G3JV-ABj: Ground at a resistance of 100 Ω or less.

3G3JV-A4j: Ground at a resistance of 10 Ω or less, and connect
to the power supply’s neutral phase to conform to EC Directives.

Note Be sure to connect the ground terminal directly to the

motor frame ground.

Note The maximum output voltage corresponds to the power supply input voltage of the Inverter.

H Control Circuit Terminals

Symbol Name Function Signal level

Input

S1 Forward/Stop Forward at ON. Stops at

OFF.

Photocoupler
8 mA at 24 V DC

S2 Multi-function input 1

(S2)

Set by parameter n36
(Reverse/Stop)

Note NPN is the default setting

for these terminals. Wire

S3 Multi-function input 2

(S3)

Set by parameter n37
(External fault: Normally
open)

them by providing a
common ground. No
external power supply is

p

S4 Multi-function input 3

(S4)

Set by parameter n38
(Fault reset)

required. To rovide an

external power supply and
wire the terminals through

S5 Multi-function input 4

(S5)

Set by parameter n39
(Multi-step reference 1)

g

a common positive line,
however, set the SW7 to

SC Sequence input com-

mon

Common for S1 through
S5

PNP

and make sure tha

t

the power supply is at 24 V
DC ±10%.

FS Frequency reference

power supply

DC power supply for fre­quency reference use

20 mA at 12 V DC

FR Frequency reference in-

put

Input terminal for fre­quency reference use

0 to 10 V DC
(input impedance: 20 kΩ)

FC Frequency reference

common

Common for frequency
reference use

(0)

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2-12

Symbol Signal levelFunctionName

Output

MA Multi-function contact

output (Normally open)

Set by parameter n40
(during running)

Relay output
1 A max. at 30 V DC

MB Multi-function contact

output (Normally closed)

(g g)

30 C

1 A max. at 250 V AC

MC Multi-function contact

output common

Common for MA and
MB use

AM Analog monitor output Set by parameter n44

(Output frequency)

2 mA max. at 0 to 10 V DC

AC Analog monitor output

common

Common for AM use

Note 1. Depending on the parameter settings, various functions can be selected for multi-function in-

puts and multi-function contacts outputs.

Note 2. Functions in parentheses are default settings.

H Selecting Input Method

• Switches SW7 and SW8, both of which are located above the control circuit terminals, are used for
input method selection.
Remove the front cover and optional cover to use these switches.

Selector

Control circuit terminal
block

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2-13

D Selecting Sequence Input Method

• By using SW7, NPN or PNP input can be selected as shown below.

24 V DC
(±10%)

S1 to 5

S1 to 5

D Selecting Frequency Reference Input Method

• By using SW8, frequency reference voltage or current input can be selected.
Parameter settings are required together with the selection of the frequency reference input method.

Frequency reference input

method

SW8 setting Frequency reference selection

(parameter n03)

Voltage input V (OFF) Set value 2
Current input I (ON) Set value 3 or 4

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2-14

2-2-3 Standard Connections

DC reactor
(optional)

Noise Filter

3-phase 230 V AC
Single-phase 230 V AC
(see note 1)
3-phase 460 V AC

Forward/Stop

Multi-function input 1 (S2)

Multi-function input 2 (S3)

Multi-function input 3 (S4)

Multi-function input 4 (S5)

Sequence input common

Frequency reference power
supply 20 mA at +12 V

FREQ
adjuster

Frequency reference input

Frequency reference common

Multi-function contact output
NO

NC

Common

Analog monitor output

Analog monitor output common

(2 kΩ, 1/4 W min.)

Note 1. Connect single-phase 230 V AC to terminals R/L1 and S/L2 of the 3G3JV-ABj.

Note 2. The braking resistor cannot be connected because no braking transistor is incorporated.

D Example of 3-wire Sequence Connections

Stop
switch
(NC)

RUN
switch
(NO)

Direction switch

RUN input (Operates with the stop switch and RUN switch closed.)

Stop input (Stops with the stop switch opened.)

Forward/Stop reference (Forward with the direction switch opened
and reverse with the direction switch closed.)

Sequence input common

Note Set parameter n37 for 3-wire sequence input.

Design Chapter 2

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2-15

2-2-4 Wiring around the Main Circuit

H Wire Size, Terminal Screw, Screw Tightening Torque, and Molded-case

Circuit Breaker Capacities

• For the main circuit and ground, always use 600-V polyvinyl chloride (PVC) cables.

• If any cable is long and may cause voltage drops, increase the wire size according to the cable length.

D 3-phase 230-V AC Model

Model

3G3JV-

Terminal symbol Terminal

screw

Screw

tightening

torque

(NSm)

Wire size

(mm

2

)

Recomme

nded wire

size

(mm

2

)

Molded-c

ase

circuit

breaker

capacity

(A)

A2001-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 5

A2002-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 5

A2004-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 5

A2007-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 10

A2015-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 2 to 5.5 2 20

A2022-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 2 to 5.5 3.5 20

A2037-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M4 1.2 to 1.5 2 to 5.5 5.5 30

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2-16

D Single-phase 230-V AC Model

Model

3G3JV-

Terminal symbol Terminal

screw

Terminal

torque

(NSm)

Wire size

(mm

2

)

Recomme

nded wire

size

(mm

2

)

Circuit

breaker

capacity

(A)

AB001-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 5

AB002-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 5

AB004-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 10

AB007-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 2 to 5.5

3.5

20

2

AB015-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 2 to 5.5

5.5

20

2

D 3-phase 460-V AC Model

Model

3G3JV-

Terminal symbol Terminal

screw

Terminal

torque

(NSm)

Wire size

(mm

2

)

Recomme
nded wire

size (mm

2

)

Circuit

breaker

capacity

(A)

A4002-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 2 to 5.5 2 5

A4004-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 2 to 5.5 2 5

A4007-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 2 to 5.5 2 5

A4015-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 2 to 5.5 2 10

A4022-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M4 1.2 to 1.5 2 to 5.5 2 10

A4037-A

R/L1, S/L2, T/L3, –, +1, +2,
U/T1, V/T2, W/T3

M4 1.2 to 1.5 2 to 5.5

2

20

3.5

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2-17

H Wiring on the Input Side of the Main Circuit

D Installing a Molded-case Circuit Breaker

Always connect the power input terminals (R/L1, S/L2, and T/L3) and power supply via a molded case
circuit breaker (MCCB) suitable to the Inverter.

• Install one MCCB for every Inverter used.

• Choose an appropriate MCCB capacity according to the Circuit breaker capacity column in the table

on the previous page.

• For the MCCB’s time characteristics, be sure to consider the Inverter’s overload protection (one min-
ute at 150% of the rated output current).

• If the MCCB is to be used in common among multiple Inverters, or other devices, set up a sequence
such that the power supply will be turned off by a fault output, as shown in the following diagram.

3-phase/Single-phase
200 V AC
3-phase 400 V AC

Power
supply

Inverter

Fault output
(NC)

D Installing a Ground Fault Interrupter

Inverter outputs use high-speed switching, so high-frequency leakage current is generated.

In general, a leakage current of approximately 100 mA will occur for each Inverter (when the power
cable is 1 m) and approximately 5 mA for each additional meter of power cable.

Therefore, at the power supply input area, use a special-purpose breaker for Inverters, which detects
only the leakage current in the frequency range that is hazardous to humans and excludes high-fre­quency leakage current.

• For the special-purpose breaker for Inverters, choose a ground fault interrupter with a sensitivity am­perage of at least 10 mA per Inverter.

• When using a general leakage breaker, choose a ground fault interrupter with a sensitivity amperage
of 200 mA or more per Inverter and with an operating time of 0.1 s or more.

D Installing a Magnetic Contactor

If the power supply of the main circuit is to be shut off because of the sequence, a magnetic contactor
can be used instead of a molded-case circuit breaker.

When a magnetic contactor is installed on the primary side of the main circuit to stop a load forcibly,
however, the regenerative braking does not work and the load coasts to a stop.

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2-18

• A load can be started and stopped by opening and closing the magnetic contactor on the primary side.
Frequently opening and closing the magnetic contactor, however, may cause the Inverter to break
down. In order not to shorten the service life of the Inverter’s internal relays and electrolytic capacitors,
it is recommended that the magnetic contactor is used in this way no more than once every 30 min­utes.

• When the Inverter is operated with the Digital Operator, automatic operation cannot be performed af­ter recovery from a power interruption.

D Connecting Input Power Supply to the Terminal Block

Input power supply can be connected to any terminal on the terminal block because the phase se­quence of input power supply is irrelevant to the phase sequence (R/L1, S/L2, and R/L3).

D Installing an AC Reactor

If the Inverter is connected to a large-capacity power transformer (660 kW or more) or the phase ad­vance capacitor is switched, an excessive peak current may flow through the input power circuit, caus­ing the converter unit to break down.

To prevent this, install an optional AC reactor on the input side of the Inverter.

This also improves the power factor on the power supply side.

D Installing a Surge Absorber

Always use a surge absorber or diode for the inductive loads near the Inverter. These inductive loads
include magnetic contactors, electromagnetic relays, solenoid valves, solenoid, and magnetic brakes.

D Installing a Noise Filter on the Power Supply Side

The Inverter’s outputs uses high-speed switching, so noise may be transmitted from the Inverter to the
power line and adversely effect other devices in the vicinity. It is recommended that a Noise Filter be
installed at the Power Supply to minimize noise transmission. Noise will also be reduced from the power
line to the Inverter.

Wiring Example 1

Power
supply

Noise
Filter

3G3JV

SYSDRIVE

Programmable
Controller

Input Noise Filters

Note Use a Noise Filter designed for the Inverter. A general-purpose Noise Filter will be less effective

and may not reduce noise.

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2-19

H Wiring on the Output Side of the Main Circuit

D Connecting the Terminal Block to the Load

Connect output terminals U/T1, V/T2, and W/T3 to motor lead wires U, V, and W.

Check that the motor rotates forward with the forward command. Switch over any two of the output ter­minals to each other and reconnect if the motor rotates in reverse with the forward command.

D Never Connect a Power Supply to Output Terminals

Never connect a power supply to output terminals U/T1, V/T2, or W/T3.

If voltage is applied to the output terminals, the internal circuit of the Inverter will be damaged.

D Never Short or Ground Output Terminals

If the output terminals are touched with bare hands or the output wires come into contact with the
Inverter casing, an electric shock or grounding will occur. This is extremely hazardous.

Also, be careful not to short the output wires.

D Do not Use a Phase Advancing Capacitor or Noise Filter

Never connect a phase advance capacitor or LC/RC Noise Filter to the output circuit.

Doing so will result in damage to the Inverter or cause other parts to burn.

D Do not Use an Electromagnetic Switch of Magnetic Contactor

Do not connect an electromagnetic switch of magnetic contactor to the output circuit.

If a load is connected to the Inverter during running, an inrush current will actuate the overcurrent pro­tective circuit in the Inverter.

D Installing a Thermal Relay

The Inverter has an electronic thermal protection function to protect the motor from overheating. If, how­ever, more than one motor is operated with one inverter or a multi-polar motor is used, always install a
thermal relay (THR) between the Inverter and the motor and set n33 to 2 (no thermal protection).

In this case, program the sequence so that the magnetic contactor on the input side of the main circuit is
turned off by the contact of the thermal relay.

D Installing a Noise Filter on the Output Side

Connect a Noise Filter to the output side of the Inverter to reduce radio noise and induction noise.

Power
supply

3G3JV

SYSDRIVE

Noise
Filter

Signal line

Induction noise Radio noise

Controller

AM radio

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2-20

Induction Noise: Electromagnetic induction generates noise on the signal line, causing the con-

troller to malfunction.

Radio Noise: Electromagnetic waves from the Inverter and cables cause the broadcasting ra-

dio receiver to make noise.

D Countermeasures against Induction Noise

As described previously, a Noise Filter can be used to prevent induction noise from being generated on
the output side. Alternatively, cables can be routed through a grounded metal pipe to prevent induction
noise. Keeping the metal pipe at least 30 cm away from the signal line considerably reduces induction
noise.

Power supply

3G3JV

SYSDRIVE

Metal pipe

30 cm min.

Signal line

Controller

D Countermeasures against Radio Interference

Radio noise is generated from the Inverter as well as the input and output lines. To reduce radio noise,
install Noise Filters on both input and output sides, and also install the Inverter in a totally enclosed steel
box.

The cable between the Inverter and the motor should be as short as possible.

Power supply

Noise
Filter

Steel box

3G3JV

SYSDRIVE

Metal pipe

Noise
Filter

D Cable Length between Inverter and Motor

As the cable length between the Inverter and the motor is increased, the floating capacity between the
Inverter outputs and the ground is increased proportionally. The increase in floating capacity at the
Inverter outputs causes the high-frequency leakage current to increase, and this may adversely affect
peripheral devices and the current detector in the Inverter’s output section. To prevent this from occur­ring, use a cable of no more than 100 meters between the Inverter and the motor. If the cable must be
longer than 100 meters, take measures to reduce the floating capacity by not wiring in metallic ducts, by
using separate cables for each phase, etc.

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2-21

Also, adjust the carrier frequency (set in n46) according to the cable length between the Inverter and the
motor, as shown in the following table.

Cable length 50 m or less 100 m or less More than 100 m
Carrier frequency 10 kHz max. 5 kHz max. 2.5 kHz

Note Single-phase motors cannot be used.

The Inverter is not suited for the variable speed control of single-phase motors.
The rotation direction of a single-phase motor is determined by the capacitor starting method or
phase-splitting starting method to be applied when starting the motor.
In the capacitor starting method, however, the capacitor may be damaged by a sudden electric
discharge of the capacitor caused by the output of the Inverter. On the other hand, the starting coil
may burn in the phase-splitting starting method because the centrifugal switch does not operate.

H Ground Wiring

• Always use the ground terminal with the following ground resistance:
200-V Inverter: 100 Ω or less
400-V Inverter: separate ground,10 Ω or less

• Do not share the ground wire with other devices such as welding machines or power tools.

• Always use a ground wire that complies with technical standards on electrical equipment and mini-

mize the length of the ground wire.
Leakage current flows through the Inverter. Therefore, if the distance between the ground electrode
and the ground terminal is too long, the potential on the ground terminal of the Inverter will become
unstable.

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2-22

• When using more than one Inverter, be careful not to loop the ground wire.

H Countermeasures against Harmonics

With the continuing development of electronics, the generation of harmonics from indus­trial machines has been causing problems recently.
The Ministry of International Trade and Industry provided some guidelines in September
1994 for the suppression of harmonics from electrical household appliances and electri­cal equipment in Japan. Since then, the problem has been drawing considerable atten­tion.
Refer to the following information for the definition of harmonics (i.e., harmonic currents
with voltages) and countermeasures against the generation of harmonics from the
Inverter.

D Harmonics

Definition

Harmonics consist of electric power produced from AC power and alternating at frequencies that are
integral multiples of the frequency of the AC power.

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2-23

The following frequencies are harmonics of a 60- or 50-Hz commercial power supply.
Second harmonic: 120 (100) Hz
Third harmonic: 180 (150) Hz

Second harmonic (120 Hz)

Basic frequency (60 Hz)

Third harmonic (180 Hz)

Problems Caused by Harmonics Generation

The waveform of the commercial power supply will be distorted if the commercial power supply contains
excessive harmonics. Machines with such a commercial power supply will malfunction or generate ex­cessive heat.

Basic frequency (60 Hz) Third harmonic (180 Hz)

Distorted current wave
form

D Causes of Harmonics Generation

• Usually, electric machines have built-in circuitry that converts commercial AC power supply into DC
power.
Such AC power, however, contains harmonics due to the difference in current flow between DC and
AC.

Obtaining DC from AC Using Rectifiers and Capacitors

DC voltage is obtained by converting AC voltage into a pulsating one-side voltage with rectifiers and
smoothing the pulsating one-side voltage with capacitors. Such AC current, however, contains harmon­ics.

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2-24

Inverter

The Inverter as well as normal electric machines has an input current containing harmonics because
the Inverter converts AC into DC. The output current of the Inverter is comparatively high. Therefore, the
ratio of harmonics in the output current of the Inverter is higher than that of any other electric machine.

Voltage

Time

Rectified

Voltage

Time

Smoothed

Voltage

Time

Current

Time

A current flows into the
capacitors. The current is
different from the voltage
in waveform.

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2-25

D Countermeasures with Reactors against Harmonics Generation

DC/AC Reactors

The DC reactor and AC reactor suppress harmonics and currents that change suddenly and greatly.

The DC reactor suppresses harmonics better than the AC reactor. The DC reactor used with the AC
reactor suppresses harmonics more effectively.

The input power factor of the Inverter is improved by suppressing the harmonics of the input current of
the Inverter.

Connection

Connect the DC reactor to the internal DC power supply of the Inverter after shutting off the power sup­ply to the Inverter and making sure that the charge indicator of the Inverter turns off.

Do not touch the internal circuitry of the Inverter in operation, otherwise an electric shock or burn injury
may occur.

Wiring Method

• With DC Reactor

3-phase 200 V AC
Single-phase 200 V AC
3-phase 400 V AC

Power supply

DC reactor
(optional)

SYSDRIVE
3G3JV

• With DC and AC Reactors

Power supply

AC reactor
(optional)

DC reactor
(optional)

SYSDRIVE
3G3JV

3-phase 200 V AC
Single-phase 200 V AC
3-phase 400 V AC

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2-26

Reactor Effects

Harmonics are effectively suppressed when the DC reactor is used with the AC reactor as shown in the
following table.

Harmonics

Harmonic generation rate (%)

suppression

method

5th har-

monic

7th har-

monic

11th har-

monic

13th har-

monic

17th har-

monic

19th har-

monic

23rd har-

monic

25th har-

monic

No reactor 65 41 8.5 7.7 4.3 3.1 2.6 1.8
AC reactor 38 14.5 7.4 3.4 3.2 1.9 1.7 1.3
DC reactor 30 13 8.4 5 4.7 3.2 3.0 2.2
DC and AC

reactors

28 9.1 7.2 4.1 3.2 2.4 1.6 1.4

2-2-5 Wiring Control Circuit Terminals

A control signal line must be 50 m maximum and separated from power lines.
The frequency reference must be input into the Inverter through shielded, twisted-pair
wires.

H Wiring of Control I/O Terminals

Wire each control I/O terminal under the following conditions.

D Wires and Tightening Torque

Multi-function Contact Output (MA, MB, and MC)

Terminal

screw size

Tightening

torque N S m

Wire Wire size Recommend

ed wire size

Cable

M3 0.5 to 0.6

Single wire 0.5 to 1.25

(20 to 16)

0.75 (18) Cable with polyethylene
sheath

Stranded
wire

0.5 to 1.25
(20 to 16)

Sequential Input (S1 through S5 and SC) and Analog Monitor Output (AM or AC)

Terminal

screw size

Tightening

torque N S m

Wire Wire size Recommend

ed wire size

Cable

M2 0.22 to 0.25

Single wire 0.5 to 1.25

(20 to 16)

0.75 (18) Cable with polyethylene
sheath

Stranded
wire

0.5 to 0.75
(20 to 18)

Frequency Reference Input (FR, FS, and FC)

Terminal

screw size

Tightening

torque N S m

Wire Wire size Recommend

ed ire size

Cable

M2 0.22 to 0.25

Single wire 0.5 to 1.25

(20 to 16)

0.75 (18) Special cable with
polyethylene sheath and

Stranded
wire

0.5 to 0.75
(20 to 18)

yy

shield for measurement use

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2-27

D Solderless Terminal Size

The use of solderless terminals for the control circuit terminals is recommended for the reliability and
ease of connection.

Note Make sure that the wire size is 0.5 mm

2

when using the following solderless terminal.

1.0 dia.

2.6 dia.

Model: Phoenix Contact’s A1 0.5-8 WH

(Size: mm)

D Wiring Method

1. Loosen the terminal screws with a thin-slotted screwdriver.

2. Insert the wires from underneath the terminal block.

3. Tighten each terminal screw firmly to a torque specified in the previous tables.

Note 1. Always separate the control signal line from the main circuit cables and other power cables.

Note 2. Do not solder the wires to the control circuit terminals. The wires may not contact well with the

control circuit terminals if the wires are soldered.

Note 3. The end of each wire connected to the control circuit terminals must be stripped for approxi-

mately 5.5 mm.

Note 4. Connect the shield wire to the ground terminal of the 3G3JG. Do not connect the shield wire to

the device side being controlled.

Note 5. Be sure to insulate the shield wire with tape so that the shield wire will not come into contact

with other signal wires or equipment.

Terminal block

Thin-slotted screwdriver

Strip the end for approximately

5.5 mm if no solderless
terminal is used.

Wire

Solderless terminal or
wire without soldering.

Note Applying excessive torque may damage

the terminal block. If the tightening torque
is insufficient, however, wires may dis­connect.

Design Chapter 2

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2-28

2-2-6 Conforming to EC Directive

The following description provides the wiring method of the Inverter to meet EC Directive
requirements. If the following requirements are not satisfied, the whole equipment incor­porating the Inverter will need further confirmation.

H Standard Connection

D Main Circuit Terminals

MCCBs

Noise Filter

Clamp core

3-phase 200 V AC
Single-phase 200 V AC
3-phase 400 V AC

D Control Circuit Terminals

Forward/Stop

Multi-function input 1 (S2)

Multi-function input 2 (S3)

Multi-function input 3 (S4)

Multi-function input 4 (S5)

Sequence input common

Frequency reference power
supply at +12 V

FREQ
adjuster

Frequency reference input

Frequency reference common

Multi-function contact output

NO

NC

Common

Analog-monitor output

Analog monitor output common

(2 kΩ, 1/4 W min.)

Note I/O signals can be connected to a single shielded cable.

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2-29

D Wiring the Power Supply

Make sure that the Inverter and Noise Filter are grounded together.

• Always connect the power input terminals (R/L1, S/L2, and T/L3) and power supply via a dedicated
Noise Filter.

• Reduce the length of the ground wire as much as possible.

• Locate the Noise Filter as close as possible to the Inverter. Make sure that the cable length between

the Noise Filter and the Inverter does not exceed 40 cm.

• The following Noise Filters are available.

3-phase 230-V AC Noise Filter

Inverter 3-phase 230-V AC Noise Filter (Rasmi)

Model 3G3JV- Model RASMI Rated current (A)

A2001-A/A2002-A/
A2004-A/A2007-A

RS2010J7 10

A2015-A/A2022-A RS2020J7 16
A2037-A RS2030J7 26

Single-phase 230-V AC Noise Filter

Inverter Single-phase 230-V Noise Filter (Rasmi)

Model 3G3JV- Model RASMI Rated current (A)

AB001-A/AB002-A/AB004-A RS1010J7 10
AB007-A/AB015-A RS1020J7 20

3-phase 460-V AC Noise Filter

Inverter 3-phase 230-V AC Noise Filter (Rasmi)

Model 3G3JV- Model RASMI Rated current (A)

A4002-A/A4004-A RS3005J7 5
A4007-A/A4015-A/A4022-A RS3010J7 10
A4037-A RS3020J7 15

D Connecting a Motor to the Inverter

• When connecting a motor to the Inverter, be sure to use a cable with a braided shield.

• Reduce the length of the cable as short as possible and ground the shield on the Inverter side as well

as the motor side. Make sure that the cable length between the Inverter and the motor does not exceed
20 cm. Furthermore, connect a clamp core (Clamp Filter) close to the output terminals of the Inverter.

Product Model Manufacturer

Clamp Filter 2CAT3035-1330 TDK

D Wiring a Control Cable

• Be sure to connect a cable with a braided shield to the control circuit terminals.

• Ground the shield on the Inverter side only.

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2-30

D Grounding the Shield

In order to ground the shield securely, it is recommended that a cable clamp be directly connected to the
ground plate as shown below.

Ground plate

Cable clamp

Cable

Shield

H LVD Conformance

• Always connect the Inverter and power supply via a molded case circuit breaker
(MCCB) suitable to the Inverter for protecting the Inverter from damage that may result from short-cir­cuiting.

• Use one MCCB per Inverter.

• Select a suitable MCCB from the following table.

• With 400-V Inverters, it is necessary to ground to the power supply’s neutral phase.

230-V Models

Inverter MCCB (Mitsubishi Electric)

Model 3G3JV- Type Rated current (A)

A2001-A

NF30

5
A2002-A 5
A2004-A 5
A2007-A 10
A2015-A 20
A2022-A 20
A2037-A 30
AB001-A

NF30

5
AB002-A 5
AB004-A 10
AB007-A 20
AB015-A 20

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2-31

460-V Models

Inverter MCCB (Mitsubishi Electric)

Model 3G3JV- Type Rated current (A)

A4002-A

NF30

5
A4004-A 5
A4007-A 5
A4015-A 10
A4022-A 10
A4037-A 20

To satisfy LVD (Low-voltage Directive) requirements, the system must be protected by a molded case
circuit breaker (MCCB) when a short-circuit occurs. A single MCCB may be shared with more than one
Inverter or with other machines. In that case, however, take some appropriate measures so that the
MCCB will protect all the Inverters from the occurrence of any single short-circuit.

The frequency reference power supply (FS) of the Inverter is of basic insulation construction. When
connecting the Inverter to peripheral devices, be sure to increase the degree of insulation.

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Chapter 3

Preparing for
Operation and
Monitoring

3-1 Nomenclature
3-2 Outline of Operation

3

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3-2

3-1 Nomenclature

Data display

Keys

Indicators
Setting/Monitor item indicators

FREQ adjuster

Appearance Name Function

Data display Displays relevant data items, such as frequency reference,

output frequency, and parameter set values.

FREQ adjuster Sets the frequency reference within a range between 0 Hz

and the maximum frequency.

FREF indicator The frequency reference can be monitored or set while this

indicator is lit.

FOUT indicator The output frequency of the Inverter can be monitored

while this indicator is lit.

IOUT indicator The output current of the Inverter can be monitored while

this indicator is lit.

MNTR indicator The values set in U01 through U10 are monitored while

this indicator is lit.

F/R indicator The direction of rotation can be selected while this

indicator is lit, when operating the Inverter with the RUN
Key.

LO/RE indicator The operation of the Inverter through the Digital Operator

or according to the parameters set is selectable while this
indicator is lit.

Note This status of this indicator can be only monitored

while the Inverter is in operation. Any RUN command
input is ignored while this indicator is lit.

PRGM indicator The parameters in n01 through n79 can be set or

monitored while this indicator is lit.

Note While the Inverter is in operation, the parameters can

be only monitored and only some parameters can be
changed. The RUN command input is ignored while
this indicator is lit.

Mode Key Switches the setting and monitor item indicators in

sequence.

Parameter setting being made is canceled if this key is
pressed before entering the setting.

Increment Key Increases multi-function monitor numbers, parameter

numbers, and parameter set values.

Decrement Key Decreases multi-function monitor numbers, parameter

numbers, and parameter set values.

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3-3

Appearance FunctionName

Enter Key Enters multi-function monitor numbers, parameter

numbers, and internal data values after they are set or
changed.

RUN Key Starts the Inverter running when the 3G3FV is in operation

with the Digital Operator.

STOP/RESET Key Stops the Inverter unless n06 is set to disable the STOP

Key. Functions as a Reset Key when an Inverter error
occurs. (See note.)

Note For safety’s reasons, the reset will not work while a RUN command (forward or reverse) is in ef-

fect. Wait until the RUN command is OFF before resetting the Inverter.

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3-4

3-2 Outline of Operation

H Selecting Indicators

Whenever the Mode Key is pressed, an indicator is lit in sequence beginning with the
FREF indicator. The data display indicates the item corresponding to the indicator se­lected.
The FOUT or IOUT indicator will be lit by turning the Inverter on again if the Inverter is
turned off while the FOUT or IOUT indicator is lit. The FREF indicator will be lit by turning
the Inverter on again if the Inverter is turned off while an indicator other than the FOUR or
IOUT indicator is lit.

Power On

FREF (Frequency Reference)

Monitors and sets the frequency reference.

FOUT (Output Frequency)

Monitors the output frequency.
Note This indicator will be lit by turning the Inverter on again if the Inverter

is turned off while this indicator is lit.

IOUT (Output Current)

Monitors the output current.
Note This indicator will be lit by turning the Inverter on again if the Inverter

is turned off while this indicator is lit.

MNTR (Multi-function Monitor)

Monitors the values set in U01 through U10.

F/R (Forward/Reverse Rotation)

Selects the direction of rotation.

LO/RE (Local/Remote)

Selects the operation of the Inverter through the Digital Operator or
according to the parameters.

PRGM (Parameter Setting)

Monitors or sets the values in n01 through n79.

The FREF indicator is lit again.

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3-5

H Example of Frequency Reference Settings

Key sequence Indicator Display

example

Explanation

Power On
Note If the FREF indicator has not been lit, press the

Mode Key repeatedly until the FREF indicator is lit.

Use the Increment or Decrement Key to set the
frequency reference.

The data display will flash while the frequency
reference is set. (see note 1)

Press the Enter Key so that the set value will be
entered and the data display will be lit. (see note 1)

Note 1. The Enter Key need not be pressed when performing the setting for n08. The frequency refer-

ence will change when the set value is changed with the Increment or Decrement Key while
the data display is continuously lit.

Note 2. The frequency reference can be set in either of the following cases.

S Parameter n03 for frequency reference selection is set to 1 (i.e., frequency reference 1 is en-

abled) and the Inverter is in remote mode.

S Parameter n07 for frequency selection in local mode is set to 1 (i.e., the Digital Operator is en-

abled) and the Inverter is in local mode.

S Frequency references 2 through 8 are input for multi-step speed operation.

Note 3. The frequency reference can be changed, even during operation.

H Example of Multi-function Display

Key sequence Indicator Display Explanation

Power On

Press the Mode Key repeatedly until the MNTR
indicator is lit.

U01 will be displayed.
Use the Increment or Decrement Key to select the

monitor item to be displayed.
Press the Enter Key so that the data of the selected

monitor item will be displayed.
The monitor number display will appear again by

pressing the Mode Key.

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3-6

D Status Monitor

Item Display Display

unit

Function

U01 Frequency

reference

Hz Monitors the frequency reference. (Same as FREF)

U02 Output frequency Hz Monitors the output frequency. (Same as FOUT)
U03 Output current A Monitors the output current. (Same as IOUT)
U04 Output voltage V Monitors the internal output voltage reference value of the

Inverter.

U05 DC bus voltage V Monitors the DC voltage of the internal main circuit of the

Inverter.

U06 Input terminal ---

Shows the ON/OFF status of inputs.

status

: Input ON : No input

Not
used

Terminal S1: Forward/Stop
Terminal S2: Multi-function input 1 (S2)
Terminal S3: Multi-function input 2 (S3)
Terminal S4: Multi-function input 3 (S4)

Terminal S5: Multi-function input 4 (S5)

U07 Output terminal ---

Shows the ON/OFF status of outputs.

status

: Closed : Open

Not
used

Terminal MA: Multi-function contact
output

U09 Error log (most

---

Displays the latest error.

g(

recent one)

Error

U10 Software No. --- OMRON use only.

H Example of Forward/Reverse Selection Settings

Key sequence Indicator Display

example

Explanation

Press the Mode Key repeatedly until the F/R indicator
is lit.

The present setting will be displayed.

For: Forward; rEv: Reverse

Use the Increment or Decrement Key to change the
direction of motor rotation. The direction of motor
rotation selected will be enabled when the display
changes after the key is pressed.

Note The direction of motor rotation can be changed, even during operation.

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3-7

H Example of Local/Remote Selection Settings

Key sequence Indicator Display

example

Explanation

Press the Mode Key repeatedly until the LO/RE
indicator is lit.

The present setting will be displayed.

rE: Remote; Lo: Local

Use the Increment or Decrement Key to set the
Inverter to local or remote mode. The selection will be
enabled when the display changes after the key is
pressed.

Note 1. Local or remote selection is possible only when the Inverter is not in operation. The present

setting can be monitored when the Inverter is in operation.

Note 2. Local or remote settings in multi-function input terminals can be changed through the multi-

function input terminals only.

Note 3. Any RUN command input will be ignored while the LO/RE indicator is lit. To enable a RUN

command, first turn the RUN command OFF and then press the Mode Key to display an item
that has a green indicator (FREF to MNTR). Then input the RUN command again.

H Example of Parameter Settings

Cancels set data.

In approximately 1 s.

Key sequence Indicator Display

example

Explanation

Power On

Press the Mode Key repeatedly until the PRGM
indicator is lit.

Use the Increment or Decrement Key to set the
parameter number.

Press the Enter Key.
The data of the selected parameter number will be
displayed.

Use the Increment or Decrement Key to set the data.
At that time the display will flash.

Press the Enter Key so that the set value will be
entered and the data display will be lit. (see note 1)

In approximately
1 s.

The parameter number will be displayed.

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3-8

Note 1. To cancel the set value, press the Mode Key instead. The parameter number will be dis-

played.

Note 2. There are parameters that cannot be changed while the Inverter is in operation. Refer to the

list of parameters. When attempting to change such parameters, the data display will not
change by pressing the Increment or Decrement Key.

Note 3. Any RUN command input will be ignored while the Parameter Setting (PRGM) indicator is lit.

To enable a RUN command, first turn the RUN command OFF and then press the Mode Key
to display an item that has a green indicator (FREF to MNTR). Then input the RUN command
again.

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Chapter 4

Test Run

4-1 Procedure for Test Run
4-2 Operation Example

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4-2

WARNING

Turn ON the input power supply only after mounting the front cover, terminal covers,
bottom cover, Operator, and optional items. Not doing so may result in electrical
shock.

WARNING Do not remove the front cover, terminal covers, bottom cover, Operator, or optional

items while the power is being supplied. Not doing so may result in electrical shock or
damage to the product.

WARNING Do not operate the Operator or switches with wet hands. Doing so may result in

electrical shock.

WARNING Do not touch the inside of the Inverter. Doing so may result in electrical shock.

WARNING Do not come close to the machine when using the error retry function because the

machine may abruptly start when stopped by an alarm. Doing so may result in injury.

WARNING Do not come close to the machine immediately after resetting momentary power

interruption to avoid an unexpected restart (if operation is set to be continued in the
processing selection function after momentary power interruption is reset). Doing so
may result in injury.

WARNING Provide a separate emergency stop switch because the STOP Key on the Operator

is valid only when function settings are performed. Not doing so may result in injury.

WARNING Be sure confirm that the RUN signal is turned OFF before turning ON the power

supply, resetting the alarm, or switching the LOCAL/REMOTE selector. Doing so
while the RUN signal is turned ON may result in injury.

Caution Be sure to confirm permissible ranges of motors and machines before operation be-

cause the Inverter speed can be easily changed from low to high. Not doing so may
result in damage to the product.

Caution Provide a separate holding brake when necessary. Not doing so may result in injury.

Caution Do not perform a signal check during operation. Doing so may result in injury or dam-

age to the product.

Caution Do not carelessly change settings. Doing so may result in injury or damage to the

product.

Test Run

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4-3

4-1 Procedure for Test Run

1. Installation and Mounting

Install the Inverter according to the installation conditions. Refer to page 2-2. Ensure that the instal­lation conditions are met.

2. Wiring and Connection

Connect to the power supply and peripheral devices. Refer to page 2-7. Select peripheral devices
which meet the specifications and wire correctly.

3. Power Connection

Carry out the following pre-connection checks before turning on the power supply.

S Always ensure that a power supply to the correct voltage is used and that the power input terminals

(R/L1, S/L2, and T/L3) are wired correctly.

3G3JV-A2j-A: 3-phase 200 to 230 V AC

3G3JV-ABj-A: Single-phase 200 to 240 V AC (Wire R/L1 and S/L2)

3G3JV-A4j-A: 3-phase 380 to 460 V AC

S Make sure that the motor output terminals (U/T1, V/T2, and W/T3) are connected to the motor

correctly.

S Ensure that the control circuit terminals and the control device are wired correctly. Make sure that

all control terminals are turned off.

S Set the motor to no-load status (i.e., not connected to the mechanical system).

S Having conducted the above checks, connect the power supply.

4. Check the Display Status

Check to be sure that there are no faults in the Inverter.

S If the display at the time the power is connected is normal, it will read as follows:

RUN indicator: Flashes

ALARM indicator: Off

Setting/Monitor indicators: FREF, FOUT, or IOUT is lit.

Data display: Displays the corresponding data of the indicator that is lit.

S When a fault has occurred, the details of the fault will be displayed. In that case, refer to Chapter 7

Maintenance Operations and take necessary remedies.

5. Initializing Parameters

Initialize the parameters.

S Set n01 to 8 for initialization in 2-wire sequence.

6. Setting Parameters

Set the parameters required for a test run.

S Set the rated motor current in order to prevent the motor from burning due to overloading.

7. No-load Operation

Start the no-load motor using the Digital Operator.

S Set the frequency reference using the Digital Operator and start the motor using key sequences.

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4-4

8. Actual Load Operation

Connect the mechanical system and operate using the Digital Operator.

S When there are no difficulties using the no-load operation, connect the mechanical system to the

motor and operate using the Digital Operator.

9. Operation

Basic Operation:
Operation based on the basic settings required to start and stop the Inverter. Refer to page 5-1.

Advanced Operation:
Operation that uses PID control or other functions. Refer to page 6-1.

S For operation within standard parameters, refer to Chapter 5 Basic Operation.
S Refer to Chapter 5 Basic Operation and Chapter 6 Advanced Operation for the various advanced

functions, such as stall prevention, carrier frequency setting, overtorque detection, torque com­pensation, and slip compensation.

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4-5

4-2 Operation Example

1 Power Connection

H Checkpoints before Connecting the Power Supply

• Check that the power supply is of the correct voltage and that the motor output terminals (R/L1, S/L2,
and T/L3) are connected to the motor correctly.

3G3JV-A2j-A: Three-phase 200 to 230 V AC

3G3JV-ABj-A: Single-phase 200 to 240 V AC (Wire R/L1 and S/L2)

3G3JV-A4j-A: 3-phase 380 to 460 V AC

• Make sure that the motor output terminals (U/T1, V/T2, and W/T3) are connected to the motor correct­ly.

• Ensure that the control circuit terminals and the control device are wired correctly. Make sure that all
control terminals are turned off.

• Set the motor to no-load status (i.e., not connected to the mechanical system).

H Connecting the Power Supply

• After conducting the above checks, connect the power supply.

2 Check the Display Status

• If the display is normal when the power is connected, it will read as follows:

Normal

RUN indicator: Flashes

ALARM indicator: Off

Setting/Monitor indicators: FREF, FOUT, or IOUT is lit.

Data display: Displays the corresponding data for the indicator that is lit.

• When a fault has occurred, the details of the fault will be displayed. In that case, refer to Chapter 7

Maintenance Operations and take necessary action.

Fault

RUN indicator: Flashes

ALARM indicator: Lit (fault detection) or flashes (alarm detection)

Setting/Monitor indicators: FREF, FOUT, or IOUT is lit.

Data display: The fault code, such as UV1, is displayed. The display will differ depending on the type
of fault.

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4-6

3 Initializing Parameters

• Initialize the parameters using the following procedure.

• To initialize the parameters, set n01 to 8.

Key sequence Indicator Display

example

Explanation

Power On

Press the Mode Key repeatedly until the PRGM indicator
is lit.

Press the Enter Key. The data of n01 will be displayed.

Use the Increment or Decrement Key to set n01 to 8.
The display will flash.

Press the Enter Key so that the set value will be entered
and the data display will be lit.

In approximately
1 s.

The parameter number will be displayed.

4 Setting the Motor Current Parameter

• Set the motor current parameter in n32 in order to prevent the motor from burning due to overloading.

H Setting the Rated Motor Current

• Check the rated current on the motor nameplate and set the motor current parameter.

• This parameter is used for the electronic thermal function for motor overload detection (OL1). By set-

ting the correct parameter, the overloaded motor will be protected from burning.

n32

Rated Motor Current Changes during

operation

No

Setting
range

0.0% to 120% (A) of rated output
current of the Inverter

Unit of
setting

0.1 A Default setting (see note

1)

Note 1. The standard rated current of the maximum applicable motor is the default rated motor cur-

rent.

Note 2. Motor overload detection (OL1) is disabled by setting the parameter to 0.0.

Key sequence Indicator Display

example

Explanation

Displays the parameter number.

Use the Increment or Decrement Key until n32 is
displayed.

Press the Enter Key. The data of n32 will be displayed.

Use the Increment or Decrement Key to set the rated
motor current. The display will flash.

Press the Enter Key so that the set value will be entered
and the data display will be lit.

In approximately
1 s.

The parameter number will be displayed.

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4-7

5 No-load Operation

• Start the no-load motor (i.e., not connected to the mechanical system) using the Digital Operator.

Note Before operating the Digital Operator, check that the FREQ adjuster is set to MIN.

H Forward/Reverse Rotation with the Digital Operator

Key

sequence

Indicator Display

example

Explanation

Press the Mode Key to turn on the FREF indicator.

Monitors the frequency reference.
Press the RUN Key. The RUN Indicator will be lit.

Turn the FREQ adjuster clockwise slowly.

The monitored frequency reference will be displayed.

The motor will start rotating in the forward direction according
to the frequency reference.

Press the MODE Key to turn on the F/R indicator.
“For” will be displayed.

Use the Increment or Decrement Key to change the direction of
motor rotation. The direction of motor rotation selected will be
enabled when the display is changed after the Key is pressed.

• After changing the frequency reference or the rotation direction, check that there is no vibration or
abnormal sound from the motor.

• Check that no faults have occurred in the Inverter during operation.

H Stopping the Motor

• On completion of operating the motor in the no-load state in the forward or reverse direction, press the
STOP/RESET Key. The motor will stop.

6 Actual Load Operation

• After checking the operation with the motor in no-load status, connect the mechanical system and
operate with an actual load.

Note Before operating the Digital Operator, check that the FREQ adjuster is set to MIN.

H Connecting the System

• After confirming that the motor has stopped completely, connect the mechanical system.

• Be sure to tighten all the screws when fixing the motor axis in the mechanical system.

H Operation Using the Digital Operator

• In case a fault occurs during operation, make sure the Stop Key on the Digital Operator is easily acces­sible.

• Use the Digital Operator in the same way as no-load operation.

• First set the frequency reference to a low speed of one tenth the normal operating speed.

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4-8

H Checking the Operating Status

• Having checked that the operating direction is correct and that the machine is operating smoothly at
slow speed, increase the frequency reference.

• After changing the frequency reference or the rotation direction, check that there is no vibration or
abnormal sound from the motor. Check the monitor display (IOUT or multi-function monitor U03) to
ensure that the output current is not becoming excessive.

Test Run

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Chapter 5

Basic Operation

5-1 Initial Settings
5-2 V/f Control
5-3 Setting the Local/Remote Mode
5-4 Selecting the Operation Command
5-5 Setting the Frequency Reference
5-6 Setting the Acceleration/Deceleration Time
5-7 Selecting the Reverse Rotation-prohibit
5-8 Selecting the Interruption Mode
5-9 Multi-function I/O
5-10 Analog Monitor Output

5

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5-2

This section explains the basic settings required to operate and stop the Inverter.
The settings of parameters described here will be sufficient for simple Inverter opera­tions.
First, make these basic settings, then skip to the explanations of those special functions,
even when your application requires special functions, such as stall prevention, carrier
frequency setting, overtorque detection, torque compensation, slip compensation. Re-

fer to Chapter 6 Advanced Operation.

5-1 Initial Settings

• The following initial settings are required.

Parameter Write-prohibit Selection/Parameter Initialization (n01): Set n01 to 1 so that n01 through
n79 can be set or displayed.

Rated Motor Current (n32): Check the rated current on the motor nameplate and set the parameter.

H Setting the Parameter Write-prohibit Selection/Parameter Initialization

(n01)

• Set n01 to 1 so that n01 through n79 can be set or displayed.

n01

Parameter Write-prohibit Selection/Parameter
Initialization

Changes during
operation

No

Setting
range

0, 1, 6, 8, 9 Unit of

setting

1 Default setting 1

Note This parameter makes it possible to write-prohibit parameters, change the parameter set or dis-

played range, or initialize all parameters to default values.

Set Values

Value Description

0 Only n01 can be displayed and set. The n02 through n79 parameters can be displayed only.
1 The n01 through n79 parameters can be displayed and set.
6 Only the error log memory is cleared.
8 Enables the initialization of all parameters in 2-wire sequence so that the parameters will

return to default values.

9 Enables the initialization of all parameters in 3-wire sequence.

H Setting the Rated Motor Current (n32)

Set the rated motor current (n32) in order to prevent the motor from burning due to overloading.

Check the rated current on the motor nameplate and set the parameter.

This parameter is used for the electronic thermal function for motor overload detection (OL1). By setting
the correct parameter, the overloaded motor will be protected from burning.

n32

Rated Motor Current Changes during

operation

No

Setting
range

0.0% to 120% (A) of rated output
current of Inverter

Unit of
setting

0.1 A Default setting (see note

1)

Basic Operation

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5-3

Note 1. The standard rated current of the maximum applicable motor is the default rated motor cur-

rent.

Note 2. Motor overload detection (OL1) is disabled by setting the parameter to 0.0.

Basic Operation

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5-4

5-2 V/f Control

H Setting the V/f Patterns (n09 to n15)

• Set the V/f pattern so that the motor output torque is adjusted to the required load torque.

• The 3G3JV incorporates an automatic torque boost function. Therefore, a maximum of 150% torque

can be output at 3 Hz without changing the default settings. Check the system in trial operation and
leave the default settings as they are if no torque characteristic changes are required.

n09

Maximum Frequency (FMAX) Changes during

operation

No

Setting
range

50.0 to 400 (Hz) Unit of
setting

0.1 Hz
(See note 1.)

Default setting 60.0

n10

Maximum Voltage (VMAX) Changes during

operation

No

Setting
range

1 to 255 (V) (See note 2.) Unit of

setting

1 V Default setting 230 (See

note 2.)

n11

Maximum Voltage Frequency (FA) Changes during

operation

No

Setting
range

0.2 to 400 (Hz) Unit of
setting

0.1 Hz
(See note 1.)

Default setting 60.0

n12

Middle Output Frequency (FB) Changes during

operation

No

Setting
range

0.1 to 399 (Hz) Unit of
setting

0.1 Hz
(See note 1.)

Default setting 1.5

n13

Middle Output Frequency Voltage (VC) Changes during

operation

No

Setting
range

1 to 255 (V) (See note 2.) Unit of

setting

1 V Default setting 12 (See

note 2.)

n14

Minimum Output Frequency (FMIN) Changes during

operation

No

Setting
range

0.1 to 10.0 (Hz) Unit of
setting

0.1 Hz Default setting 1.5

n15

Minimum Output Frequency Voltage (VMIN) Changes during

operation

No

Setting
range

1 to 50 (V) (See note 2.) Unit of

setting

1 V Default setting 12 (See

note 2.)

Note 1. Values will be set in 0.1-Hz increments if the frequency is less than 100 Hz and 1-Hz incre-

ments if the frequency is 100 Hz or greater.

Basic Operation

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5-5

Note 2. With 460-V Inverters, the values for the upper limit of setting ranges and the default settings

will be twice those given in the above table.

Output voltage
(V)

Note 1. Set the parameters so that the fol-

lowing condition will be satisfied.
n14 x n12 < n11 x n09

Note 2. The value set in n13 will be ignored if

parameters n14 and n12 are the
same in value.

Frequency (Hz)

• Set the rated motor input frequency to the maximum voltage frequency (FMAX) while the rated motor
input voltage is set to the maximum output voltage (VMAX).

• The vertical-axis load or the load with high viscous friction may require high torque at low speed. If the
torque is insufficient at low speed, increase the voltage in the low-speed range by 1 V, provided that no
overload (OL1 or OL2) is detected. If an overload is detected, decrease the set values or consider the
use of an Inverter model with a higher capacity.

• The required torque of fan or pump control increases in proportion to the square of the speed. By set­ting a quadratic V/f pattern to increase the voltage in the low-speed range, the power consumption of
the system will increase.

Basic Operation

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5-6

5-3 Setting the Local/Remote Mode

The 3G3JV operates in local or remote mode. The following description provides in­formation on these modes and how to select them.

H Basic Concept

Operation mode Basic concept Description

Remote The Inverter in a system

operates according to the
control signal of the host
controller.

RUN Command

Selectable from two types and set in n02.

Frequency Reference

Selectable from five types and set in n03.

Local The Inverter in a system

operates independently in this
mode so that the Inverter can
be checked independently.

RUN Command

Starts with the RUN Key of the Digital Operator
and stops with the STOP/RESET Key.

Frequency Reference

Set with the Digital Operator or the FREQ
adjuster.

Set with frequency reference selection in local
mode in n07.

H Local/Remote Selection Methods

• The following two selection methods are available to set the Inverter to local or remote mode. While
the operation command is being input, however, the Inverter cannot be set to local mode from remote
mode or vice versa.

S Select the mode with the LO/RE Key of the Digital Operator.

S Set any one of multi-function inputs 1 through 4 (n36 through n39) to 17 to set the Inverter to local

mode with control input turned ON.

Note If the above setting is made, mode selection will be possible only with multi-function input, and not

with the Digital Operator.

• The Inverter always goes into remote mode when the power is turned ON. Therefore, to operate im­mediately after powerup, set up the RUN command and frequency reference settings in remote mode
in advance.

Basic Operation

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5-7

5-4 Selecting the Operation Command

The following description provides information on how to input operation commands to
start or stop the Inverter or change the direction of rotation of the Inverter.
Two types of command input methods are available. Select either one of them according
to the application.

H Selecting the Operation Mode (n02)

• Select the method of operation mode input to start or stop the Inverter.

• The following method is enabled in remote mode only. The command can be input through key se-

quences on the Digital Operator.

n02

Operation Command Selection Changes during

operation

No

Setting
range

0, 1 Unit of

setting

1 Default setting 1

Set Values

Value Description

0 The RUN and STOP/RESET Keys of the Digital Operator are enabled.
1 Multi-function input in 2- or 3-wire sequence through the control circuit terminals is enabled.

H Selecting the STOP/RESET Key Function (n06)

• When parameter n02 is set to 1, set whether or not to use the STOP/RESET Key of the Digital Opera­tor to stop the Inverter in remote mode. The STOP/RESET Key is always enabled in local mode re­gardless of the setting in n02.

n06

STOP Key Function Selection Changes during

operation

No

Setting
range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Description

0 The STOP/RESET Key of the Digital Operator is enabled.
1 The STOP/RESET Key of the Digital Operator is disabled. This setting is available only when

the Digital Operator is selected for operation command input.

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5-8

5-5 Setting the Frequency Reference

5-5-1 Selecting the Frequency Reference

The following description provides information on how to set the frequency reference in
the Inverter. Select the method according to the operation mode.
Remote mode: Select and set one out of five frequency references in n03.
Local mode: Select and set one out of two frequency references in n07.

H Selecting the Frequency Reference (n03) in Remote Mode

• Select the input method of frequency references in remote mode.

• Five frequency references are available in remote mode. Select one of them according to the applica-

tion.

n03

Frequency Reference Selection Changes during

operation

No

Setting
range

0 to 4 Unit of

setting

1 Default setting 2

Set Values

Value Description

0 The FREQ adjuster of the Digital Operator is enabled. (see note 1)
1 Frequency reference 1 (n21) is enabled.
2 The frequency reference control terminal (for 0- to 10-V input) is enabled. (see note 2)
3 The frequency reference control terminal (for 4- to 20-mA current input) is enabled. (see note

3)

4 The frequency reference control terminal (for 0- to 20-mA current input) is enabled. (see note

3)

Note 1. The maximum frequency (FMAX) is set when the FREQ adjuster is set to MAX.

Note 2. The maximum frequency (FMAX) is set with 10 V input.

Note 3. The maximum frequency (FMAX) is set with 20 mA input, provided that SW8 on the control

PCB is switched from V to I.

• The frequency reference set in n03 works as frequency reference 1 when the Inverter is in multi-step
speed operation. The set values in n22 through n28 for frequency references 2 through 8 are enabled.

H Selecting the Frequency Reference (n07) in Local Mode

• Select the input method of frequency references in local mode.

• Two frequency references are available in local mode. Select one of them according to the application.

n07

Frequency Reference Selection in Local Mode Changes during

operation

No

Setting
range

0, 1 Unit of

setting

1 Default setting 0

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Set Values

Value Description

0 The FREQ adjuster of the Digital Operator is enabled. (see note 1)
1 Key sequences on the Digital Operator are enabled. (see note 2)

Note 1. The maximum frequency (FMAX) is set when the FREQ adjuster is set to MAX.
Note 2. The frequency reference can be set with key sequences while the FREF indicator is lit or with

the set value in n21 for frequency reference 1. In either case, the value is set in n21.

5-5-2 Upper and Lower Frequency Reference Limits

Regardless of the methods of operation mode and frequency reference input, the upper
and lower frequency reference limits can be set.

H Setting the Frequency Reference Upper and Lower Limits (n30 and

n31)

• Set the upper and lower frequency reference limits as percentage based on the maximum frequency
as 100%.

n30

Frequency Reference Upper Limit Changes during

operation

No

Setting
range

0% to 110%
(Max. frequency = 100%)

Unit of
setting

1% Default setting 100

n31

Frequency Reference Lower Limit Changes during

operation

No

Setting
range

0% to 110%
(Max. frequency = 100%)

Unit of
setting

1% Default setting 0

Note If n31 is set to a value less than the minimum output frequency (FMIN), the Inverter will have no

output when a frequency reference less than the minimum output frequency input is ON.

5-5-3 Adjusting the Analog Input

Input characteristic adjustments may be necessary for analog frequency references to
be input. At that time, use the following parameters for gain, bias, and filter time parame­ter adjustments.

H FR Terminal Adjustments for Frequency Reference Input

D Gain and Bias Settings (n41 and n42)

• Set the input characteristics of analog frequency references in n41 (for the frequency reference gain)
and n42 (for the frequency reference bias).

• Set the frequency of maximum analog input (10 V or 20 mA) in n41 as percentage based on the maxi­mum frequency as 100%.

• Set the frequency of minimum analog input (0 V, 0 mA, or 4 mA) in n42 as percentage based on the
maximum frequency as 100%.

n41

Frequency Reference Gain Changes during

operation

Yes

Setting
range

0% to 255%
(Max. frequency = 100%)

Unit of
setting

1% Default setting 100

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5-10

n42

Frequency Reference Bias Changes during

operation

Yes

Setting
range

–99% to 99%
(Max. frequency = 100%)

Unit of
setting

1% Default setting 0

D Analog Frequency Reference Filter Time (n43)

• The digital filter with a first-order lag can be set for analog frequency references to be input.

• This setting is ideal if the analog input signal changes rapidly or the signal is subject to noise interfer-

ence.

• The larger the set value is, the slower the response speed will be.

n43

Analog Frequency Reference Filter Time Changes during

operation

No

Setting
range

0.00 to 2.00 (s) Unit of
setting

0.01 s Default setting 0.10

5-5-4 Setting Frequency References through Key Sequences

The following description provides information on parameters related to frequency ref­erence settings through key sequences on the Digital Operator

H Setting Frequency References 1 through 8 and the Inching Frequency

Command (n21 through n28 and n29)

A total of nine frequency references (frequency references 1 through 8) and an inching frequency com­mand can be set together in the Inverter.

D Setting Frequency References 1 through 8 (n21 through n28)

n21

Frequency Reference 1 Changes during

operation

Yes

Setting
range

0.0 to max. frequency Unit of
setting

0.01 Hz (see
note 1)

Default setting 6.0

n22

Frequency Reference 2 Changes during

operation

Yes

Setting
range

0.0 to max. frequency Unit of
setting

0.01 Hz (see
note 1)

Default setting 0.0

n23

Frequency Reference 3 Changes during

operation

Yes

Setting
range

0.0 to max. frequency Unit of
setting

0.01 Hz (see
note 1)

Default setting 0.0

n24

Frequency Reference 4 Changes during

operation

Yes

Setting
range

0.0 to max. frequency Unit of
setting

0.01 Hz (see
note 1)

Default setting 0.0

n25

Frequency Reference 5 Changes during

operation

Yes

Setting
range

0.0 to max. frequency Unit of
setting

0.01 Hz (see
note 1)

Default setting 0.0

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5-11

n26

Frequency Reference 6 Changes during

operation

Yes

Setting
range

0.0 to max. frequency Unit of
setting

0.01 Hz (see
note 1)

Default setting 0.0

n27

Frequency Reference 7 Changes during

operation

Yes

Setting
range

0.0 to max. frequency Unit of
setting

0.01 Hz (see
note 1)

Default setting 0.0

n28

Frequency Reference 8 Changes during

operation

Yes

Setting
range

0.0 to max. frequency Unit of
setting

0.01 Hz (see
note 1)

Default setting 0.0

Note 1. Values will be set in 0.1-Hz increments if the frequency is less than 100 Hz and 1-Hz incre-

ments if the frequency is 100 Hz or over.

Note 2. Frequency reference 1 is enabled with n03 for frequency reference selection set to 1.

Note 3. Frequency references 2 through 8 are enabled by setting multi-step speed references 1, 2,

and 3 in n36 through n39 for multi-function input. Refer to the following table for the relation­ship between multi-step speed references 1 through 3 and frequency references 1 through 8.

Frequency reference Multi-step speed

reference 1

(Set value: 6)

Multi-step speed

reference 2

(Set value: 7)

Multi-step speed

reference 3

(Set value: 8)

Frequency reference 1 OFF OFF OFF
Frequency reference 2 ON OFF OFF
Frequency reference 3 OFF ON OFF
Frequency reference 4 ON ON OFF
Frequency reference 5 OFF OFF ON
Frequency reference 6 ON OFF ON
Frequency reference 7 OFF ON ON
Frequency reference 8 ON ON ON

No multi-step speed reference 3 settings will be required if only frequency references 1 through 4 are
used, for example. Any multi-step speed reference not set is regarded as turned-OFF input.

D Setting the Inching Frequency Command (n29)

• The inching frequency command must be set as multi-function input in order to use the inching fre­quency command.

n29

Inching Frequency Command Changes during

operation

Yes

Setting
range

0.0 to max. frequency Unit of
setting

0.01 Hz (see
note 1)

Default setting 6.0

Note 1. The value will be set in 0.1-Hz increments if the frequency is less than 100 Hz and 1-Hz incre-

ments if the frequency is 100 Hz or over.

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Note 2. In order to use the inching frequency command, one of the n36 through n39 parameters for

multi-function input must be set to 10 as an inching frequency command. Parameter n29 is
selectable by turning on the multi-function input set with the inching frequency command. The
inching frequency command takes precedence over the multi-step speed reference (i.e.,
when the inching frequency command is ON, all multi-step speed reference input will be ig­nored).

H Setting the Frequency Reference with the FREF Indicator Lit

• The frequency reference can be set while the FREF indicator of the Digital Operator is lit in the follow­ing cases.

S Parameter n03 for frequency reference selection is set to 1, which enables frequency reference 1,

and the Inverter is in remote mode.

S Parameter n07 for frequency selection in local mode is set to 1, which enables key sequences on

the Digital Operator, and the Inverter is in local mode.

S Frequency references 2 through 8 are set with multi-step speed reference input.

• The frequency reference can be changed, even during operation.

• When the frequency reference is changed while the FREF indicator is lit, the corresponding parameter

is changed simultaneously. For example, if frequency reference 2 has been selected with multi-func­tion input (a multi-step speed reference), the set value in n22 (for frequency reference 2) will be
changed simultaneously when the frequency reference is changed while the FREF indicator is lit.

• Take the following default steps, for example, to change the frequency reference with the FREF indi­cator lit.

Key

sequence

Indicator Display

example

Explanation

Power On
Note If the FREF indicator has not been lit, press the Mode Key

repeatedly until the FREF indicator is lit.

Use the Increment or Decrement Key to set the frequency
reference.

The data display will flash while the frequency reference is set.
Press the Enter Key so that the set value will be entered and

the data display will be lit.

D Setting the Key Sequential Frequency (n08)

• The Enter Key need not be pressed when changing the setting in n08. In that case, the frequency
reference will change when the set value is changed with the Increment or Decrement Key while the
data display is continuously lit.

n08

Key Sequential Frequency Setting Changes during

operation

No

Setting
range

0, 1 Unit of

setting

1 Default setting 0

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5-13

Set Values

Value Description

0 Enter Key enabled (The set value is entered with the Enter Key pressed.)
1 Enter Key disabled (The set value set is entered immediately.)

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5-14

5-6 Setting the Acceleration/Deceleration Time

The following description provides information on parameters related to acceleration
and deceleration time settings.
Trapezoidal and S-shape acceleration and deceleration are available. Using the S­shape characteristic function for acceleration and deceleration can reduce shock to the
machinery when stopping or starting.

H Setting the Acceleration/Deceleration Time (n16 through n19)

• Two acceleration times and two deceleration times can be set.

• The acceleration time is the time required to go from 0% to 100% of the maximum frequency and the

deceleration time is the time required to go from 100% to 0% of the maximum frequency. The actual
acceleration or deceleration time is obtained from the following formula.

Acceleration/Deceleration time = (Acceleration/Deceleration time set value)

× (Frequency reference value) ÷ (Max. frequency)

Acceleration time 2 and deceleration time 2 are enabled by setting 11 for acceleration/deceleration time
selection in any of the n36 through n39 parameters for multi-function input.

Deceleration time 2 is also enabled by emergency-stop settings 19, 20, 21, and 22 in any of the n36,
n37, n38, and n39 parameters for multi-function input with n04 for interruption mode selection set to 0
(i.e., deceleration stop).

n16

Acceleration time 1 Changes during

operation

Yes

Setting
range

0.0 to 999 (s) Unit of
setting

0.1 s
(see note)

Default setting 10.0

n17

Deceleration Time 1 Changes during

operation

Yes

Setting
range

0.0 to 999 (s) Unit of
setting

0.1 s
(see note)

Default setting 10.0

n18

Acceleration Time 2 Changes during

operation

Yes

Setting
range

0.0 to 999 (s) Unit of
setting

0.1 s
(see note)

Default setting 10.0

n19

Deceleration Time 2 Changes during

operation

Yes

Unit of
setting

0.0 to 999 (s) Unit of
setting

0.1 s
(see note)

Default setting 10.0

Note Values will be set in 0.1-Hz increments if the frequency is less than 100 Hz and 1-Hz increments if

the frequency is 100 Hz or over.

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5-15

H S-shape Acceleration/Deceleration Characteristic (n20)

• Trapezoidal and S-shape acceleration and deceleration are available. Using the S-shape characteris­tic function for acceleration and deceleration can reduce shock to the machinery when stopping or
starting.

• Any one of three S-shape acceleration/deceleration times (0.2, 0.5, and 1.0 s) is selectable.

n20

S-shape Acceleration/Deceleration Characteristic Changes during

operation

No

Setting
range

0 to 3 Unit of

setting

1 Default setting 0

Set Values

Value Description

0 No S-shape acceleration/deceleration characteristic (Trapezoidal acceleration/deceleration)
1 S-shape acceleration/deceleration characteristic time is 0.2 s
2 S-shape acceleration/deceleration characteristic time is 0.5 s
3 S-shape acceleration/deceleration characteristic time is 1.0 s

Note When the S-shape acceleration/deceleration characteristic time is set, the acceleration and de-

celeration times will be lengthened according to the S-shape at the beginning and end of accel­eration/deceleration.

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5-16

5-7 Selecting the Reverse Rotation-prohibit

This parameter is used to specify whether to enable or disable the reverse rotation com­mand sent to the Inverter from the control circuit terminals or Digital Operator.
The parameter should be set to “not accept” when the Inverter is applied to systems that
prohibit the reverse rotation of the Inverter.

H Selecting the Reverse Rotation-prohibit (n05)

n05

Reverse Rotation-prohibit Selection Changes during

operation

No

Setting
range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Description

0 Accept
1 Not accept

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5-17

5-8 Selecting the Interruption Mode

This parameter is used to specify the interruption mode when the STOP command is
input.
The Inverter either decelerates or coasts to a stop according to the interruption mode
selection.

H Selecting the Interruption Mode (n04)

n04

Interruption Mode Selection Changes during

operation

No

Setting
range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Description

0 Frequency deceleration stop (See notes 1 and 2.)
1 Free running (See note 3.)

Note 1. The Inverter will decelerate to stop according to the setting in n17 for deceleration time 1 if any

of the n36 through n39 parameters for multi-function input is not set to 11 for acceleration/de­celeration time selection. If any one of the n36 through n39 multi-function input parameters is
set to acceleration/deceleration time selection, the Inverter will decelerate to stop according
to the selected setting of deceleration time when the STOP command is input.

Note 2. If the RUN signal is input again during a deceleration stop, deceleration will be stopped at the

point of the input and acceleration will proceed at that frequency.

Note 3. Do not input a RUN signal during a free-running stop if the motor’s rotation speed is not suffi-

cient slowed. If a RUN signal is input under these conditions, a main circuit overvoltage (OV)
or overcurrent (OC) will be detected.
To restart a free-running motor, set a speed search command in one of the multi-function in­puts 1 to 4 (n36 to n39), use the speed search to detect the speed of the free running motor,
and then accelerate smoothly.

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5-18

5-9 Multi-function I/O

5-9-1 Multi-function Input

The 3G3JV incorporates four multi-function input terminals (S2 through S5). Inputs into
these terminals have a variety of functions according to the application.

H Multi-function Input (n36 through n39)

n36

Multi-function Input 1 (S2) Changes during

operation

No

Setting
range

2 to 8, 10 to 22
(see note)

Unit of
setting

1 Default setting 2

n37

Multi-function Input 2 (S3) Changes during

operation

No

Setting
range

0, 2 to 8, 10 to 22 (see
note)

Unit of
setting

1 Default setting 5

n38

Multi-function Input 3 (S4) Changes during

operation

No

Setting
range

2 to 8, 10 to 22
(see note)

Unit of
setting

1 Default setting 3

n39

Multi-function Input 4 (S5) Changes during

operation

No

Setting
range

2 to 8, 10 to 22, 34 (see
note)

Unit of
setting

1 Default setting 6

Note Do not set values outside the above setting ranges.

Set Values

Value Function Description

0 Forward/Reverse rotation

command

3-wire sequence (to be set in n37 only)

By setting n37 to 0, the set value in n36 is ignored and the
following setting are forcibly made.

S1: RUN input (RUN when ON)

S2: STOP input (STOP when OFF)

S3: Forward/Reverse rotation command

(OFF: Forward; ON: Reverse)
2 Reverse/Stop Reverse rotation command (2-wire sequence)
3 External fault (NO)

ON: External fault (FPj detection: j is a terminal number)

4 External fault (NC)

OFF: External fault (EFj detection: j is a terminal number)
5 Fault reset ON: Fault reset (disabled while RUN command is input)
6 Multi-step speed

reference 1

Signals to select frequency references 2 through 8.

Note Refer to 5-5-4 Setting the Frequency References through Key

7 Multi-step speed

reference 2

Note Refer to

554 Setting the Frequency References through Key

Sequences for the relationship between multi-step speed ref-

erences and frequency references.

8 Multi-step speed

reference 3

qy

Note Any multi-step speed reference not set is regarded as turned-

OFF input.

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5-19

Value DescriptionFunction

10 Inching frequency

command

ON: Inching frequency command (taking precedence over the

multi-step speed reference)
11 Acceleration/Deceleration

time selection

ON: Acceleration time 2 and deceleration time 2 are selected.

12 External base block

command (NO)

ON: Output shut off (while motor coasting to a stop and “bb”

flashing)
13 External base block

command (NC)

OFF: Output shut off (with motor free running and “bb” flashing)

14 Search command

(Searching starts from
maximum frequency)

ON: Speed search (Searching starts from n09)

15 Search command

(Searching starts from
preset frequency)

ON: Speed search

16 Acceleration/Decelera-

tion-prohibit command

ON: Acceleration/Deceleration is on hold (running at parameter

frequency)
17 Local or remote selection ON: Local mode (operated with the Digital Operator)

Note After this setting is made, mode selection with the Digital Oper-

ator is not possible.

19 Emergency stop fault

(NO)

The Inverter stops according to the setting in n04 for interruption

mode selection with the emergency stop input turned ON.

p

20 Emergency stop alarm

(NO)

n04 set to 0: Decelerates to stop at deceleration time 2 set in
n19. n04 set to 1: Coasts to a stop.

Note NO: Emergency stop with the contact closed.
21 Emergency stop fault

(NC)

gy

NC: Emergency stop with the contact opened.

Note Fault: Fault output is ON and reset with RESET input. Alarm

p

22 Emergency stop alarm

(NC)

output is ON (no reset required).

Note “STP” is displayed (lit with fault input ON and flashes with alarm

input ON)

34 Up or down command Up or down command (set in n39 only)

By setting n39 to 34, the set value in n38 is ignored and the

following settings are forcibly made.

S4: Up command S5: Down command

Note It is impossible to set the up or down command and multi-step

speed references 1 through 3 together.

Note For up and down command functions in detail, refer to 6-7-7

UP/DOWN Command Frequency Memory (n62).

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5-20

H Operation in 2-wire Sequence (Set Value: 2)

• The Inverter operates in 2-wire sequence by setting a multi-function input parameter to 2 (reverse/
stop).

• The following diagram shows a wiring example of the terminals in 2-wire sequence.

Forward-rotation
switch

Reverse-rotation
switch

Forward/Stop (Forward rotation with the forward-rotation switch
closed and reverse-rotation switch opened)

Reverse/Stop (Reverse rotation with the reverse-rotation switch
closed and forward-rotation switch opened)

Sequence input common

j: 2 to 5

H Operation in 3-wire Sequence (n37 = 0)

• The Inverter operates in 3-wire sequence by setting n37 for multi-function input 2 to 0.

• Only n37 can be set to 0 (3-wire sequence). By making this setting, the set value in n36 is ignored and

the following settings are forcibly made.

S1: RUN input (RUN when ON)

S2: STOP input (STOP when OFF)

S3: Forward/Reverse rotation command (OFF: Forward; ON: Reverse)

• The following diagram shows a wiring example of the terminals in 3-wire sequence.

Stop switch
(NC)

Operation
switch (NO)

Direction switch

RUN input (RUN with the STOP switch and RUN switch closed)

STOP input (with the STOP switch opened)

Forward/Reverse rotation command (Forward rotation with the direction
switch opened and reverse rotation with the direction switch closed)

Sequence input common

H External Base Block Command (Set Value: 11, 12)

When an SPST-NO (setting: 12) or SPST-NC (setting: 13) input is received, Inverter outputs are shut
OFF. Use these inputs in the following cases to stop Inverter outputs.

S For switching the motor to free running status when applying an external brake.

S For stopping Inverter outputs before disconnecting motor wiring when changing the motor con-

nections from the Inverter to a commercial power supply.

Note The external base block only shuts OFF the Inverter’s output frequency, and the Inverter’s inter-

nal frequency continues to be calculated as usual. Therefore, if the external base block is cleared

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5-21

when the frequency is other than zero, the frequency calculated at that point will be output. Be­cause of this, if the baseblock is cleared during deceleration while the motor is free running, a
large discrepancy between the motor speed at that moment and the Inverter output frequency
may result in a main circuit overvoltage (OV) or overcurrent (OC).

H Speed Search (Set Value: 14, 15)

The speed search function is provided for smooth restarting without stopping a free running motor. Use
it when switching the motor from commercial power supply operation to Inverter operation, when start­ing with the Inverter a motor turned by external force, etc.

The speed search function searches for the present motor frequency, from high frequency to low. When
the motor’s rotation speed is detected, it is accelerated from that frequency to the frequency reference
according to the acceleration/deceleration time setting.

Forward (reverse)
RUN command

Speed Search command

0.5 s min.

High-speed frequency
or set frequency
(frequency reference)

Minimum base block time (0.5 s)

Speed search operation

ON

ON

Output frequency

Time

Time

Time

Speed Search Function

5-9-2 Multi-function Output

The 3G3JV incorporates two multi-function output terminals (MA and MB).
Output from these terminals has a variety of functions according to the application.

H Selecting the Multi-function Output (n40)

n40

Multi-function Output (MA/MB and MC) Changes during

operation

No

Setting
range

0 to 7, 10 to 17
(see note)

Unit of
setting

1 Default setting 1

Note Do not set values outside the above setting ranges.

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5-22

Set Values

Value Function Description

0 Fault output ON: Fault output (with protective function working)
1 Operation in progress ON: Operation in progress (with RUN command input or inverter

output)

2 Frequency detection ON: Frequency detection (with frequency reference coinciding with

output frequency)
3 Idling ON: Idling (at less than min. output frequency)
4 Frequency detection 1

ON: Output frequency y frequency detection level (n58)

5 Frequency detection 2

ON: Output frequency x frequency detection level (n58)

6 Overtorque being

monitored (NO-contact
output)

Output if any of the following parameter conditions is satisfied.

• Overtorque detection function selection (n59)

• Overtorque detection level (n60)

7 Overtorque being

monitored (NC-contact
output)

Overtorque detection level (n60)

• Overtorque detection time (n61)

Note NO contact: ON with overtorque being detected; NC contact:

OFF with overtorque being detected
10 Alarm output ON: Alarm being detected (Nonfatal error being detected)
11 Base block in progress ON: Base block in progress (in operation with output shutoff)
12 RUN mode ON: Local mode (with the Digital Operator)
13 Inverter ready ON: Inverter ready to operate (with no fault detected)
14 Fault retry ON: Fault retry (Inverter resetting with fault retry (n48) not set to 0)
15 UV in progress ON: Undervoltage being monitored (main circuit undervoltage UV or

UV1 detected)

16 Rotating in reverse

direction

ON: Rotating in reverse direction

17 Speed search in progress ON: Speed search in progress

Note Use “operation in progress” (set value: 1) or “idling“ (set value: 3) setting for the timing for stopping

the motor using a brake. To specify a precise stop timing, set “frequency detection 1” (set value: 4)
or “frequency detection 2” (set value: 5), and set the frequency detection level (n58).

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5-23

5-10 Analog Monitor Output

The 3G3JV incorporates analog monitor output terminals AM and AC.
These terminals have analog monitor values of output frequency or current.

H Setting the Analog Monitor Output (n44 and n45)

• The output frequency or current as a monitored item is set in n44.

• The analog output characteristics are set as an analog monitor output gain in n45.

n44

Analog Monitor Output Changes during

operation

No

Setting
range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Description

0 Output frequency (Reference: 10 V at max. frequency)
1 Output current (Reference: 10 V with rated output current)

n45

Analog Monitor Output Gain Changes during

operation

Yes

Set range 0.00 to 2.00 Unit of

setting

0.01 Default setting 1.00

Note 1. Set the multiplication ratio based on the set value in n44.

For example, if an output of 5 V is desired at maximum frequency (with n44 set to 0), set n45 to

0.50.

Note 2. The maximum output voltage of the analog monitor output terminals are 10 V.

Basic Operation

Chapter 5

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Chapter 6

Advanced Operation

6-1 Setting the Carrier Frequency
6-2 DC Injection Braking Function
6-3 Stall Prevention Function
6-4 Overtorque Detection Function
6-5 Torque Compensation Function
6-6 Slip Compensation Function
6-7 Other Functions

6

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6-2

This chapter provides information on the use of advanced functions of the Inverter for
operation.
Refer to this chapter to use the various advanced functions, such as stall prevention,
carrier frequency setting, overtorque detection, torque compensation, and slip com­pensation.

6-1 Setting the Carrier Frequency

The carrier frequency of the 3G3JV can be fixed or varied in proportion to the output fre­quency.

n46

Carrier Frequency Selection Changes during

operation

No

Setting
range

1 to 4, 7 to 9 Unit of

setting

1 Default setting (see note)

Note The default setting varies with the capacity of the Inverter model.

Set Values

Value Description

1 2.5 kHz
2 5.0 kHz
3 7.5 kHz
4 10.0 kHz
7 2.5 kHz (12×): 12 times as high as output frequency (between 1.0 and 2.5 kHz)
8 2.5 kHz (24×): 24 times as high as output frequency (between 1.0 and 2.5 kHz)
9 2.5 kHz (36×): 36 times as high as output frequency (between 1.0 and 2.5 kHz)

• The default setting does not need any changes in normal operation.

• Change the default setting in the following cases.

The wiring distance between the Inverter and motor is long:
Set the Inverter to a lower carrier frequency.

Reference carrier frequency: 10 kHz at a maximum wiring distance of 100 m and 5 kHz at a

wiring distance exceeding 100 m.

Excessive speed or torque dispersion at low speed:
Set the carrier frequency to a lower value.

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6-3

Note The carrier frequency changes as shown in the following graph with 7 through 9 set in n46.

Carrier Frequency (n46: 7 through 9)

Carrier
Frequency

83.3 Hz (Set value: 7)

41.6 Hz (Set value: 8)

27.7 Hz (Set value: 9)

208.3 Hz (Set value: 7)

104.1 Hz (Set value: 8)

69.4 Hz (Set value: 9)

Output frequency

• The Inverter cannot maintain rated output current with the carrier frequency set to a value higher than
the default one.
The following table shows the default value and a decrease in the output current of each Inverter mod­el.
Be sure to use the Inverter so that there will be no decrease in rated output current.

Voltage Model 3G3JV- Default setting Rated output

current (A)

Set to 3
Reduced rated
output current

(A)

Set to 4
Reduced rated
output current

(A)

3-phase

A2001-A 4 (10 kHz) 0.8 ← ←

230 V

A2002-A 4 (10 kHz) 1.6 ← ←
A2004-A 4 (10 kHz) 3.0 ← ←
A2007-A 4 (10 kHz) 5.0 ← ←
A2015-A 3 (7.5 kHz) 8.0 ← 7.0
A2022-A 3 (7.5 kHz) 11.0 ← 10.0
A2037-A 3 (7.5 kHz) 17.5 ← 16.5

Single-phase

AB001-A 4 (10 kHz) 0.8 ← ←

g

230 V

AB002-A 4 (10 kHz) 1.6 ← ←
AB004-A 4 (10 kHz) 3.0 ← ←
AB007-A 4 (10 kHz) 5.0 ← ←
AB015-A 3 (7.5 kHz) 8.0 ← 7.0

3-phase

A4002-A 3 (7.5 kHz) 1.2 ← 1.0

460 V

A4004-A 3 (7.5 kHz) 1.8 ← 1.6
A4007-A 3 (7.5 kHz) 3.4 ← 3.0
A4015-A 3 (7.5 kHz) 4.8 ← 4.0
A4022-A 3 (7.5 kHz) 5.5 ← 4.8
A4037-A 3 (7.5 kHz) 8.6 ← 7.6

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6-4

n75

Low Carrier Frequency at Low Speed Changes during

operation

No

Setting
range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Description

0 Low carrier frequency at low speed disabled.
1 Low carrier frequency at low speed enabled.

• Normally set n75 to 0.

• When the output frequency is 5 Hz or higher and the output current rate is 110% or less, the carrier

frequency will be automatically reduced to 2.5 kHz with n75 set to 1. If the load is heavy at low speed,
the Inverter will withstand higher overcurrent by suppressing the heat radiation of the Inverter caused
by the carrier frequency.

• This function is enabled with 2, 3, or 4 set in n46 for carrier frequency.

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6-5

6-2 DC Injection Braking Function

The DC injection braking function applies DC on the induction motor for braking control.
Startup DC Injection Braking:
This braking is used for stopping and starting the motor rotating by inertia with no regen­erative processing.
DC Injection Braking to Stop:
Adjust the stop DC injection braking time if the motor rotating does not decelerate to a
stop in normal operation due to inertia from a heavy load. By increasing the DC injection
braking time or DC injection braking current, the time required for stopping the motor is
reduced.

n52

DC Control Current Changes during

operation

No

Setting
range

0 to 100 (%) Unit of

setting

1% Default setting 50

n53

Interruption DC Control Time Changes during

operation

No

Setting
range

0.0 to 25.5 (s) Unit of
setting

0.1 s Default setting 0.0

n54

Startup DC Control Time Changes during

operation

No

Setting
range

0.0 to 25.5 (s) Unit of
setting

0.1 s Default setting 0.0

• Set the DC injection braking current as percentage based on the rated current of the Inverter as 100%.

• After the startup DC injection braking time is set, the Inverter starts up at minimum frequency on

completion of the startup DC injection braking control of the Inverter.

• After the speed is reduced, the Inverter is switched to DC injection braking at minimum output frequen­cy.

DC Injection Braking Control

Output
frequency

Minimum
output
frequency
(n14)

n54
Startup DC control time

n53
Interruption DC control time

Time

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6-6

6-3 Stall Prevention Function

A stall will occur if the motor cannot keep up with the rotating magnetic field on the motor
stator side when a large load is applied to the motor or a sudden acceleration/decelera­tion is performed.
In the 3G3JV, stall prevention functions can be set independently for accelerating, run­ning, and decelerating conditions.

n55

Stall Prevention Level during Deceleration Changes during

operation

No

Setting
range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Description

0 Stall prevention during deceleration
1 No stall prevention during deceleration

• If 1 is set, the motor will be decelerated according to the set deceleration time. If the deceleration time
is too short, the main circuit may result in overvoltage.

• If 0 is set, the deceleration time will be automatically lengthened to prevent overvoltage.

Stall Prevention during Deceleration with n55 Set to 0

Output
frequency

Deceleration time is controlled
to prevent overvoltage.

Deceleration time (Set value)

Time

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6-7

n56

Stall Prevention Level during Acceleration Changes during

operation

No

Setting
range

30 to 200 (%) Unit of

setting

1% Set Values 170

Set Values

• This function is used to stop accelerating the load if the output current exceeds the set current value so
that the Inverter will continue operating without stalling. The Inverter accelerates the load while the
output current is the same as or less than the set value.

• Set the parameter as percentage based on the rated Inverter current as 100%.

• The default setting does not need any changes in normal operation.

• Decrease the set value if the capacity of the motor is smaller than that of the Inverter or the motor stalls

with the default value.
The set value is normally 2 or 3 times higher than the rated current of the motor. Set this current as
percentage based on the rated inverter current as 100%.

Stall Prevention during Acceleration

Output
current

n56 (stall prevention level
during acceleration)

Time

Output
frequency

The output frequency is controlled
so that the Inverter will not stall.

Time

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6-8

n57

Stall Prevention during Operation Changes during

operation

No

Setting
range

30 to 200 (%) Unit of

setting

1% Default setting 160

Set Values

• This function will decrease the output frequency if the output current exceeds the set current value by a
minimum of approximately 100 ms so that the Inverter will continue operating without stalling. The
Inverter will increase the output frequency to return to the set frequency reference level when the out­put current is less than the set value.

• The Inverter accelerates or decelerates the output frequency according to the preset acceleration or
deceleration time. (Acceleration time 1: n16, n17 or acceleration time 2: n18, n19)

• Set the parameter as percentage based on the rated Inverter current as 100%.

• The default setting does not need any changes in normal operation.

• Decrease the set value if the capacity of the motor is smaller than that of the Inverter or the motor stalls

with the default value.
The set value is normally 2 or 3 times higher than the rated current of the motor. Set this current in
percentage based on the rated Inverter current as 100%.

Stall Prevention during Acceleration

Output
current

n57 (Stall prevention level
during acceleration)

Time

Output
frequency

The output frequency is controlled
so that the Inverter will not stall.

Time

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6-9

6-4 Overtorque Detection Function

When an excessive load is applied to the equipment, the Inverter detects the overtorque
condition through an increase in the output current.

n59

Overtorque Detection Function Selection Changes during

operation

No

Setting
range

0 to 4 Unit of

setting

1 Default setting 0

Set Values

Value Description

0 Inverter does not monitor overtorque.
1 Inverter monitors overtorque only when speed is matched. It continues operation (issues

warning) even after overtorque is detected.

2 Inverter monitors overtorque only when speed is matched. It discontinues operation

(through protective function) when overtorque is detected.

3 Inverter always monitors overtorque during operation. It continues operation (issues

warning) even after overtorque is detected.

4 Inverter always monitors overtorque during operation. It discontinues operation (through

protective function) when overtorque is detected.

• Set n60 for overtorque detection level and n61 for overtorque detection time to enable the overtorque
detection function. The Inverter will detect overtorque when the current the same as or higher than the
detection level is output for the preset detection time.

• Set n40 for multi-function output to either of the following so that external overtorque detection output
will be ON.

Set Value: 6 for overtorque detection (NO)

Set Value: 7 for overtorque detection (NC)

Overtorque Detection

Output
current

n60 (Overtorque
detection level)

Time

Overtorque
detection (NO)

n61

Overtorque detection time

Time

Note Overtorque detection will be canceled if the output current decreases from the detection level by approxi-

mately 5% of the Inverter rated current.

See note.

n60

Overtorque Detection Level Changes during

operation

No

Setting
range

30 to 200 (%) Unit of

setting

1% Default setting 160

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