Omron EasySpeed 3G3JE User Manual

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3G3JE

Compact Simplified Inverters

Cat. No. I547-E1-02

USER’S MANUAL

Preface

Thank you for choosing this 3G3JE-series Compact Simplified Inverter. This User's Manual describes Inverter installation and wiring, the parameter settings required for operation, and troubleshooting and inspection procedures.

• This manual is to be delivered to the final end user of the product.

• After reading the manual, always keep it close at hand for reference when operating the Inverter.

• Every effort has been made to provide detailed specifications, information on functions, and interrelationships between them. Assume that anything not described in this manual cannot be performed.

• This manual is intended for the following personnel, who are assumed to have sufficient knowledge of electrical systems (i.e., an electrical engineer or the equivalent).

• Personnel in charge of introducing control devices

• Personnel designing the control system

• Personnel installing and connecting control devices

• Personnel managing the site where the Inverter is used

• Refer to the Communications Manual for information on communications commands for 3G3JE Inverters with communications.

USER’S MANUAL

3G3JE

Compact Simplified Inverters

 OMRON, 2006

by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission o

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.

III

Read and Understand this Manual

Please read and understand this manual before using the products. Please consult your OMRON representative if you have any questions or comments.

Warranty and Limitations of Liability

WARRANTY

OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified) from date of sale by OMRON.

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NONINFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.

LIMITATIONS OF LIABILITY

OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.

In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.

IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

Application Considerations

SUITABILITY FOR USE

OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's application or use of the products.

At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product, machine, system, or other application or use.

The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:

• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this manual.

• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles, safety equipment, and installations subject to separate industry or government regulations.

• Systems, machines, and equipment that could present a risk to life or property.

Please know and observe all prohibitions of use applicable to the products.

NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.

PROGRAMMABLE PRODUCTS

OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.

Disclaimers

CHANGE IN SPECIFICATIONS

Product specifications and accessories may be changed at any time based on improvements and other reasons.

It is our practice to change model numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual specifications of purchased products.

DIMENSIONS AND WEIGHTS

Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.

PERFORMANCE DATA

Performance data given in this manual is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the result of OMRON's test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.

ERRORS AND OMISSIONS

The information in this manual has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.

This document shall not be copied for sales or promotions without permission. This document is protected by copyright and is intended solely for use in conjunction with the product. Please notify us before copying or reproducing this document in any manner, for any other purpose. If copying or transmitting this document to another, please copy or transmit it in its entirely.

● Indications and Meanings of Safety Information

The following precautions and signal words are used to provide information to ensure the safe use of the 3G3JE Inverter. The information provided here is vital to safety. Always observe the precautions provided.

The following signal words are used in this manual.

(There are no alert statements with “DANGER” contained in this manual.)

(There are no alert statements with “WARNING” contained in this manual.)

Safety Precautions

Meanings of Signal Words

DANGER

Indicates an imminently hazardous situation which, if not avoided, is likely to result in serious injury or may result in death. Additionally there may be severe property damage.

WARNING

Indicates a potentially hazardous situation which, if not avoided, will result in minor or moderate injury, or may result in serious injury or death. Additionally there may be significant property damage.

CAUTION

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury or in property damage.

VII

The following alert symbols are used in this manual.

Meanings of Alert Symbols

Symbol Meaning

Caution

General Caution Indicates non-specific general cautions, warnings, and dangers.

Electrical Shock Caution

Indicates possibility of electric shock under specific conditions.

High Temperature Caution

Indicates possibility of burns due to high temperatures under specific conditions.

Prohibition

Disassembly Prohibition

Indicates prohibitions when there is a possibility of injury, such as from electric shock, as the result of disassembly.

Mandatory Caution

General Caution

Indicates non-specific general cautions, warnings, and dangers.

VIII

The following alert statements apply to the products in this manual. Each alert statement also appears at the locations needed in this manual to attract your attention.

Alert Statements in this Manual

Caution

Be sure to use the specified Braking Resistor or Braking Resistor Unit. Not doing so may occasionally result in moderate burns due to heating of the

Braking Resistor or Braking Resistor Unit. When using a Braking Resistor or Braking Resistor Unit, be sure to install a

thermal relay to monitor the resistor temperature. Include a sequence to turn OFF the power supply to the Inverter if the Braking

Resistor or Braking Resistor Unit overheats. Terminals B1 and B2 are for connecting an optional Braking Resistor or Braking

Resistor Unit. Do not connect any device other than a Braking Resistor or Braking Resistor Unit to these terminals.

Doing so may occasionally result in moderate fire, heating, or equipment damage.

Do not open terminal covers while the power is being supplied or for at least one minute after the power has been turned OFF.

Doing so may occasionally result in minor injury from electrical shock.

Do not remove the fan cover except when replacing the fan. Before replacing the fan, first turn OFF the power and disconnect the wiring.

Doing so may occasionally result in minor injury from electrical shock.

Install external breakers (MCCB) suitable for the Inverter capacity on the power supply side of the Inverter and take other safety measures against short-circuiting in load wiring.

Not doing so may occasionally result in property damage from short-circuiting in load wiring.

Cover the Inverter or take other measures to prevent filings or lead clippings from entering the Inverter during installation and wiring.

The Inverter contains high-voltage components and Inverter damage or property damage may occasionally occur if the high-voltage components are shortcircuited.

■ Installation and Storage Environment

• Do not store, install, or operate the product in any of the following locations.

• Locations subject to direct sunlight.

• Locations subject to temperatures outside the range specified in the specifications.

• Locations subject to humidity outside the range specified in the specifications.

• Locations subject to condensation resulting from severe changes in temperature.

• Locations subject to corrosive or flammable gases.

• Locations subject to exposure to combustibles.

• Locations subject to dust (especially iron dust) or salts.

• Locations subject to exposure to water, oil, or chemicals.

• Locations subject to shock or vibration.

■

Transporting, Installation, and Wiring

• Always use the original shipping box when transporting the Inverter.

• Do not apply excessive shock to the Inverter or drop the Inverter. The Inverter may malfunction or may be damaged.

• Do not connect an AC power supply voltage to the U, V, and W output terminals. Doing so will damage the Inverter.

• Do not connect any load other than a three-phase inductive motor to the U, V, and W output terminals.

• Do not connect an AC power supply voltage to the control I/O terminals. Doing so will damage the Inverter.

• Use 600-V polyvinyl chloride (PVC) cable with a wire size of 0.75 to 2 mm

to wire the main

circuit terminals. Also, tighten the terminal screws on the terminal block to a torque of 0.8 to

1.0 N·m.

• Take appropriate and sufficient shielding countermeasures when installing systems in the following locations. Not doing so may result in malfunction or equipment damage.

• Locations subject to static electricity or other forms of noise.

• Locations subject to strong electromagnetic fields and magnetic fields.

• Locations close to power lines.

■

Operation and Maintenance

• This Inverter can be set to operate from low speed to high speed. Operate the Inverter only after sufficiently confirming the allowable range for the motor installation being used.

• Take measures to assure safety before performing maintenance or inspection, or replacing components.

Precautions for Safe Use

■ Installation

• Mount the product vertically on a wall or on a DIN Track. Leave the prescribed space between this product and the control panel surface and other devices.

■ Main Circuit Power Supply

• Use a three-phase, 200 to 230 V, 50/60 Hz power supply.

■ Operation after Power Interruptions

• If continuing operation is selected for the momentary power interruption restart selection parameter (P09), the system may unexpectedly start operation after a momentary power interruption is reset. Exercise suitable caution.

■ Operation Command Selection

• If the operation command selection parameter (P10) is set to “PLC” to enable using the control circuit terminal inputs (STF and STR), the motor may start operation when the power supply is turned ON or an alarm is reset if the control circuit terminals are left ON. Exercise suitable caution. Also, if signals are checked during operation and a voltage is incorrectly applied to the control circuit terminals, the motor may start moving unexpectedly. Always check safety before performing signal checks.

■ Motor Overheating Protection (Electronic Thermal)

• The Inverter uses an electronic thermal to protect the motor from overheating. Set the rated current of the motor in the rated motor current parameter (P01). If more than one motor is operated with one Inverter, set the rated motor current parameter (P01) to 0.0 to disable motor overload detection, and install a thermal relay between the Inverter and each motor. Set the thermal relay to the nameplate current at 50 Hz and to 1.1 times the nameplate current at 60 Hz.

■ Disposing of the Inverter

• Observe all applicable legal requirements when disposing of the Inverter.

Precautions for Correct Use

■ Warning Label Position

• A warning label is pasted on the product as shown in the following illustration. Be sure to follow the instructions given there.

■ Contents of Warning

Warning label

Front panel

XII

■ Checking the Product

On delivery, always check that the delivered product is the 3G3JE Inverter that you ordered. Should you find any problems with the product, immediately contact your nearest local sales representative.

● Checking the Nameplate

● Checking the Model

Checking Before Unpacking

Inverter model

Input specifications

Output specifications

Series name 3G3JE Series

Voltage Class 2: Three-phase 200 V AC

Degree of Protection A: Panel-mountin

g (

IP10 or higher)/Closed wall-mountin

(1) (2) (3) (4)

3G3JE−A2@@@−@

(4) Communications

Blank: No communications function FLK: CompoWay/F

(3) Control Circuit Terminals (Input Side)

Blank: PNP input N: NPN input

(2) Braking Resistor Control

Blank: No Braking Resistor control. B: Braking Resistor control provided.

(1) Maximum Applicable Motor Capacity

001: 0.1 kW 002: 0.2 kW 004: 0.4 kW

XIII

■ Checking the Accessories

An Instruction Manual is the only accessory provided with the 3G3JE. Set screws and other necessary parts must be provided by the user.

XIV

About this Manual

This manual is divided into the chapters described in the following table. Understanding how information is organized will enable you to use the manual more efficiently.

Chapter Contents

Chapter 1 Overview

Describes Inverter features and nomenclature.

Chapter 2 Design

Provides dimensions, installation methods, peripheral device design information, and peripheral device selection information.

Chapter 3 Operation

Describes initial setting methods, operation confirmation methods, and functions.

Chapter 4 Maintenance Operations

Describes Inverter maintenance. Provides troubleshooting information for when errors occur in the

Inverter and periodic inspection and maintenance information.

Chapter 5 Specifications

Provides Inverter specifications, as well as the specifications and dimensions of peripheral devices.

Chapter 6 Parameter Tables

Provides tables of basic information on Inverter parameters in RUN Mode, Adjustment Mode, and Initial Settings Mode as a reference for users already familiar with Inverter operation. Use this chapter when adjusting the Inverter.

Parameters are listed with the page numbers of further information for easy reference.

Chapter 7 Appendix

Provides information on selecting the Inverter and precautions on using the Inverter for a motor.

Table of Contents

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

1-1 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

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

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

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

2-2 Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Chapter 3. Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-1 Key Operation Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3-2 Procedure for Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3-3 Performing a Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3-4 RUN Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3-5 Adjustment Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

3-6 Initial Settings Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Chapter 4. Maintenance Operations . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4-1 Protective and Diagnostic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4-2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4-3 Maintenance and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12

Chapter 5. Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5-1 Inverter Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5-2 Option Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Chapter 6. Parameter Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Chapter 7. Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7-1 Selecting the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7-2 Precautions on Using the Inverter for a Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

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

Table of Contents

XVI

Chapter 1

Overview

1-1 Functions

1-2 Nomenclature

Chapter 1

1-2

Overview

1-1 Functions

■ 3G3JE Models

• Rated power supply voltage: Three-phase 200 to 230 V AC

• Enclosure rating: IP20

(1) Models with PNP Input

(2) Models with NPN Input

■ Conformance with International Standards

■ Convenient Functions for Easy Operation

• Easy torque adjustment according to load torque characteristics.

• Replaceable cooling fan.

• Standard models include an interface for connecting to time-shared proportional pulse output, enabling direct connection to digital controllers or temperature controllers.

• Models with RS-485 communications support the CompoWay/F OMRON communications protocol.

Maximum applicable motor capacity 0.1 kW 0.2 kW 0.4 kW

No braking resistor control

Standard models 4 inputs and 2 outputs

3G3JE-A2001 3G3JE-A2002 3G3JE-A2004

RS-485 communications models 2 inputs and 2 outputs

3G3JE-A2001-FLK --- ---

Braking resistor control

Standard models 4 inputs and 2 outputs

--- 3G3JE-A2002B 3G3JE-A2004B

RS-485 communications models 2 inputs and 2 outputs

--- 3G3JE-A2002B-FLK 3G3JE-A2004B-FLK

Maximum applicable motor capacity 0.1 kW 0.2 kW 0.4 kW

No braking resistor control

Standard models 4 inputs and 2 outputs

3G3JE-A2001N 3G3JE-A2002N 3G3JE-A2004N

RS-485 communications models 2 inputs and 2 outputs

3G3JE-A2001NFLK

--- ---

Braking resistor control

Standard models 4 inputs and 2 outputs

--- 3G3JE-A2002BN 3G3JE-A2004BN

RS-485 communications models 2 inputs and 2 outputs

--- 3G3JE-A2002BNFLK

3G3JE-A2004BNFLK

Classification Applicable standard

EC Directives EMC Directive EN 61800-3

Low-voltage Directive EN 61800-5-1 (Pollution Degree 2/Overvoltage Category II)

Chapter 1

1-3

Overview

1-2 Nomenclature

■ Part Names

Hz set Hz out A Kh

RUN RVS ALM COM

EasySpeed

3G3JE INVERT ER

8.8.8

3-Phase AC power supply

B1 B2

Braking resistor

R/L1 S/L2 T/L3

Motor

U/T1 V/T2 W/T3

Mounting hole

Digital Operator

Terminal block cover

Data display

Simplified-LED indicators

Operation keys

Terminal block cover Mounting hole

Chapter 1

1-4

Overview

■ Digital Operator Part Names

Note Refer to Section 3 Operation for information on moving between modes.

Name Function

Data display Displays relevant data, such as the frequency reference, output frequency, out-

put current, parameter set values, and accumulated operating time.

@ Hz set Frequency ref-

erence

Lit when the data display shows the frequency reference.

@ Hz out Output fre-

quency

Lit when the data display shows the output frequency.

@ A Output current Lit when the data display shows the output current. @ Kh Accumulated

operating time

Lit when the data display shows the accumulated operating time.

@ RUN RUN indicator Lit while the Inverter is operating. @ RVS Reverse oper-

ation indicator

Lit while the Inverter is operating in reverse.

@ ALM Alarm indica-

tor

Lit when a fault is detected or a protective function has been triggered. (Error information can be monitored in RUN mode.)

@ COM Communica-

tions indicator

Lit while data is being sent or received. (Communications models only.)

Mode Key In RUN mode, switches the setting/monitoring indicators. When pressed for one

second or longer, the mode changes from the RUN mode to the initial settings mode.

Enter Key Enters displayed items, set values, etc.

When this key is pressed for one second or longer, the mode is changed from RUN mode to adjustment mode.

RUN Key Starts the Inverter if operation with the Digital Operator is selected.

STOP/RESET Key

Stops the Inverter. This key also clears errors when errors are detected or a protection function

operates. Operating with the Digital Operator must be selected to use the above key func-

tions.

Increment Key These keys change the displayed set value. They also change the parameter

set in the adjustment mode or initial settings mode.

Decrement Key

888

RUN

STOP

RESET

Chapter 2

Design

2-1 Installation

2-2 Wiring

Chapter 2

2-2

Design

■ Installation and Storage Environment

• Do not store, install, or operate the product in any of the following locations.

• Locations subject to direct sunlight.

• Locations subject to temperatures outside the range specified in the specifications.

• Locations subject to humidity outside the range specified in the specifications.

• Locations subject to condensation resulting from severe changes in temperature.

• Locations subject to corrosive or flammable gases.

• Locations subject to exposure to combustibles.

• Locations subject to dust (especially iron dust) or salts.

• Locations subject to exposure to water, oil, or chemicals.

• Locations subject to shock or vibration.

Caution

Be sure to use the specified Braking Resistor or Braking Resistor Unit. Not doing so may occasionally result in moderate burns due to heating of the Braking

Resistor or Braking Resistor Unit. When using a Braking Resistor or Braking Resistor Unit, be sure to install a thermal

relay to monitor the resistor temperature. Include a sequence to turn OFF the power supply to the Inverter if the Braking Resis-

tor or Braking Resistor Unit overheats. Terminals B1 and B2 are for connecting an optional Braking Resistor or Braking

Resistor Unit. Do not connect any device other than a Braking Resistor or Braking Resistor Unit to these terminals.

Doing so may occasionally result in moderate fire, heating, or equipment damage. Install external breakers (MCCB) suitable for the Inverter capacity on the power sup-

ply side of the Inverter and take other safety measures against short-circuiting in load wiring.

Not doing so may occasionally result in property damage from short-circuiting in load wiring.

Cover the Inverter or take other measures to prevent filings or lead clippings from entering the Inverter during installation and wiring.

The Inverter contains high-voltage components and Inverter damage or property damage may

occasionally occur if the high-voltage components are short-cir-

cuited.

Precautions for Safe Use

Chapter 2

2-3

Design

■ Transporting, Installation, and Wiring

• Always use the original shipping box when transporting the Inverter.

• Do not apply excessive shock to the Inverter or drop the Inverter. The Inverter may malfunction or may be damaged.

• Do not connect an AC power supply voltage to the U, V, and W output terminals. Doing so will damage the Inverter.

• Do not connect any load other than a three-phase inductive motor to the U, V, and W output terminals.

• Do not connect an AC power supply voltage to the control I/O terminals. Doing so will damage the Inverter.

• Use 600-V polyvinyl chloride (PVC) cable with a wire size of 0.75 to 2 mm

to wire the main

circuit terminals. Also, tighten the terminal screws on the terminal block to a torque of 0.8 to

1.0 N·m.

• Take appropriate and sufficient shielding countermeasures when installing systems in the following locations. Not doing so may result in malfunction or equipment damage.

• Locations subject to static electricity or other forms of noise.

• Locations subject to strong electromagnetic fields and magnetic fields.

• Locations close to power lines.

■

Installation

• Mount the product vertically on a wall or on a DIN Track. Leave the prescribed space between this product and the control panel surface and other devices.

■ Main Circuit Power Supply

• Use a three-phase, 200 to 230 V, 50/60 Hz power supply.

Precautions for Correct Use

Chapter 2

2-4

Design

2-1 Installation

2-1-1 Dimensions

● 3G3JE-A2001/-A2002/-A2004: Three-phase 200-V AC Input

Note All models are the same size.

2-1-2 Installation Conditions

■ Installation Direction

• Screw the Inverter to a wall or mount it to DIN Track so that the characters on the nameplate read normally when facing the Inverter in a normal vertical position.

■ Clearances from Peripheral Devices

• When installing the Inverter, always provide the following clearances to allow normal heat dissipation from the Inverter. If using a line of 0.1-kW Inverters, leave ample space at the top of each one to allow airflow.

Hz set Hz out A Kh

RUN RVS ALM COM

EasySpeed

3G3JE INVERTER

3-Phase AC power supply

B1 B2

Braking resistor

R/L1 S/L2 T/L3

Motor

U/T1 V/T2 W/T3

115

123.3

(including 0.3 for height of raised characters)

106

4.5 dia. or M4

(

Unit: mm

)

Panel Mounting Dimensions

Chapter 2

2-5

Design

• Side-by-side mounting is possible as long as the ambient temperature is −10 to 45°C. (All models)

Inverter capacity Model W (clearance: −10 to 50°C)

0.1 kW 3G3JE-A2001 3G3JE-A2001N 10 mm 3G3JE-A2001-FLK 3G3JE-A2001N-FLK

0.2 kW 3G3JE-A2002 3G3JE-A2002N 10 mm 3G3JE-A2002B 3G3JE-A2002BN 3G3JE-A2002B-FLK 3G3JE-A2002BN-FLK

0.4 kW 3G3JE-A2004 3G3JE-A2004N 10 mm 3G3JE-A2004B 3G3JE-A2004BN 3G3JE-A2004B-FLK 3G3JE-A2004BN-FLK

WW W

100 mm min.

Air

Inverter Inverter Inverter

Side

100 mm min.

Air

Inverter Inverter Inverter

Side

Chapter 2

2-6

Design

2-2 Wiring

2-2-1 Standard Connection Diagrams

■ Standard Models

■ Communications Models

Note 1. Refer to 2-2-4 Wiring Control Circuit Terminals for information on wiring the control circuit

terminals.

2. An optional Braking Resistor can be connected only to Inverters with braking resistor control.

Forward/stop

Reverse/stop

R/L1

B1 B2

S/L2

T/L3

24 VDC/SC (See note 1.)

U/T1

V/T2

W/T3

Braking Resistor (option) (See note 2.)

SS0

SS1

STF

STR

SC/24 VDC

Load

ALM (+)

ALM (−)

STA (+)

STA (−)

Multi-step speed reference 0

3G3JE Inverter

Three-phase 200 to 230 V AC

MCCB

Multi-step speed reference 1

R/L1

B1 B2

S/L2

T/L3

U/T1

V/T2

W/T3

Load

Forward/stop Reverse/stop

3G3JE Inverter

MCCB

Three-phase 200 to 230 V AC

RS-485 (+)

RS-485 (−)

RS-485 (+)

RS-485 (−)

24 VDC/SC (See note 1.)

STF

STR

SC/24 VDC

ALM (+)

ALM (−)

STA (+)

STA (−)

Braking Resistor (option) (See note 2.)

Chapter 2

2-7

Design

2-2-2 Terminal Block

■ Terminal Arrangement

■ Arrangement of Main Circuit Input Terminals

■ Arrangement of Main Circuit Output Terminals

■ Control Circuit Terminals

Hz set Hz out A Kh

RUN RVS ALM COM

888

OMRON EasySpeed

3G3JE INVERTER

Main circuit input terminals

Main circuit output terminals

Control circuit terminals

R/L1 S/L2 T/L3 B1 B2

Power supply input

Braking Resistor connection

U/T1 V/T2 W/T3

Motor output

1 2 3 4 5 6 7 8 9 10

Chapter 2

2-8

Design

■ Terminal Arrangement for Standard Models

■ Terminal Arrangement for Models with Communications

■ Main Circuit Terminals

■ Control Circuit Terminals for Standard Models

Terminal123456 7 8 910

Models with PNP input

24 VDC

SS0 SS1 STF STR SC ALM (+) ALM (

−) S TA (+ ) S TA (−)

Models with NPN input (@@@@N)

SC SS0 SS1 STF STR 24

VDC

ALM (+) ALM (

−) S TA (+ ) S TA (−)

Terminal123456 7 8 910

Models with PNP input

RS-485 (+)

RS-485 (

−)

24 VDC

STF STR SC ALM (+) ALM (

−) S TA (+ ) S TA (−)

Models with NPN input (@@@@N)

RS-485 (+)

RS-485 (

−)

SC STF STR 24

VDC

ALM (+) ALM (

−) S TA (+ ) S TA (−)

Symbol Name Description

R/L1 Power supply inputs Inputs for connecting three-phase 200 to 230-V AC power sup-

ply.

S/L2 T/L3 U/T1 Motor outputs Three-phase power supply outputs for driving the motor. V/T2 W/T3 B1 Between B1 and B2: Braking

Resistor connection terminals

Connect between B1 and B2 to connect a Braking Resistor or a Braking Resistor Unit. (3G3JE-A2@@@B models with braking resistor control only)

Symbol Name Function Specifications

Input 24VDC Internal 24-V power sup-

ply

The 24-VDC power supply input for Inverter control circuits. Do not use this power supply for any other purpose.

Photocoupler (24 V DC, 5 mA per input)

SS0 Multi-step speed refer-

ence 0

Executes multi-step speed reference in combination with SS0 and SS1 when P11 (Frequency reference selection) is set to MSP (multi-step speed reference). (See note.)

SS1 Multi-step speed refer-

ence 1

STF Forward/stop command Executes forward operation. STR Reverse/stop command Executes reverse operation. SC External power supply

common

Common terminal for when internal 24-V power supply is not used.

Output ALM (+) Alarm output Turns ON when an alarm occurs. Open collector

(30 V DC, 50 mA max.)

ALM (

−)

STA (+) Multi-function output Turns ON when the operating status

selected in P12 (Multi-function output selection) is reached.

STA (

−)

Chapter 2

2-9

Design

Note If P11 (Frequency reference selection) is set to T.C (Temperature controller time-shared pro-

portional pulses), multi-step speed reference 0 (SS0) will be the temperature controller timeproportional pulse input and multi-step speed reference 1 (SS1) will be ignored.

■ Control Circuit Terminals for Communications Models

● Relation between Control Circuit Terminals and Frequency Reference

Multi-step speed reference 0 (SS0) and multi-step speed reference 1 (SS1) can be used together to select one of the following frequency references.

Note Multi-step speed references are supported only for Standard Models.

● Relation between Control Circuit Terminals and Forward/Reverse Commands

The operation commands from control input are as follows:

Symbol Name Function Specifications

Input RS-485 (+) RS-485 communications

terminals

Refer to the separate Communications Manual for communications specifications, wiring, communications commands, and other related information.

RS-485 (

−)

24 VDC Internal 24-V power sup-

ply

The 24-VDC power supply input for Inverter control circuits. Do not use this power supply for any other purpose.

Photocoupler (24 V DC, 5 mA per

input) STF Forward/stop command Executes forward operation. STR Reverse/stop command Executes reverse operation. SC External power supply

common

Common terminal for when internal 24V power supply is not used.

Output ALM (+) Alarm output Turns ON when an alarm occurs. Open collector

(30 V DC, 50 mA

max.)

ALM (

−)

STA (+) Multi-function output Turns ON when the operating status

selected in P12 (Multi-function output selection) is reached.

STA (

−)

Multi-step speed reference SS0 SS1

Frequency reference 1 (SP1) OFF OFF Frequency reference 2 (SP2) ON OFF Frequency reference 3 (SP3) OFF ON Frequency reference 4 (SP4) ON ON

Operation Command STF STR

Stop OFF OFF Forward ON OFF Reverse OFF ON Stop ON ON

Chapter 2

2-10

Design

2-2-3 Main Circuit Terminal Wiring

■ Main Circuit Terminal Connections

• Use insulated wiring with a rated voltage of 600 V and a temperature rating of 80°C min. for main circuit terminals.

• For terminal connections, use crimp terminals with insulating sleeves.

• When not connecting a Braking Resistor or a Braking Resistor Unit, screw crimp terminals with insulating sleeves to the Inverter's braking resistance connection terminals.

• Up to two power lines can be connected per terminal.

• If there is a possibility of voltage drops, increase the wire size according to the cable length.

● Wire Sizes, Terminal Screws, Screw Tightening Torque, and Molded-case Circuit

Breaker (MCCB) Capacities

■ Main Circuit Connection Diagram

■ Wiring the Input Side of the Main Circuit

● Installing Molded-case Circuit Breakers

• Always install molded-case circuit breakers (MCCBs) in the power supply wiring to protect against short-circuit accidents.

• Always connect the power input terminals (R/L1, S/L2, and T/L3) and power supply via an MCCB suitable to the Inverter.

• Install one MCCB per Inverter.

• Choose an MCCB with the capacity indicated in the previous tables (Wire Size, Terminal Screw, Tightening Torque, and Molded-case Circuit Breaker Capacities).

Model Terminal symbol Terminal

screw

Screw

tightening

torque (N·m)

Wire size

(mm

)

Recom-

mended wire

size (mm

)

MCCB

capacity

(A)

3G3JE-A2001 R/L1, S/L2, T/L3, B1, B2,

U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 3 to 5

3G3JE-A2002 R/L1, S/L2, T/L3, B1, B2,

U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 3 to 5

3G3JE-A2004 R/L1, S/L2, T/L3, B1, B2,

U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 5

R/L1

S/L2

T/L3

U/T1

V/T2

W/T3

3G3JE Inverter

MCCB

B1 B2

Braking Resistor (option)

Three-phase 200 to 230 V AC

Chapter 2

2-11

Design

• For the MCCB's time characteristics, be sure to consider the Inverter's overcurrent protection (one minute at 150% of the rated output current).

• A sequence that turns OFF the power supply using the alarm (ALM) output of the 3G3JE can be made as shown in the following diagram.

● 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.)

• Use a separate breaker for the power supply input section of the Inverter that removes high-frequency leakage currents and detects only leakage currents with frequencies hazardous to human beings. Use a breaker 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.

● Installing a Magnetic Contactor

• If the power supply of the main circuit is to be turned OFF because of the sequence, a magnetic contactor (MC) can be used. (When a magnetic contactor is installed on the primary side of the main circuit to forcibly stop a load, however, the regenerative braking will not work and the load will coast to a stop.)

• A load can be started and stopped by switching the magnetic contactor. Frequently switching the magnetic contactor, however, may cause the Inverter to break down. To maintain the service life of the Inverter's internal electrolytic capacitors, it is recommended that the MC be switched to start/ stop operation 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.

● 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 T/L3).

R/L1

S/L2

T/L3

ONOFF

3G3JE Inverter

ALM (+)

ALM (−)

Three-phase 200 to 230 V AC

MCCB

(30 VDC, 50 mA max.)

DC (24 V) relay

Chapter 2

2-12

Design

● Installing an AC Reactor

If the Inverter is connected to a large-capacity power transformer (660 kVA 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.

● 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.

● Connecting a Braking Resistor or a Braking Resistor Unit

When driving a vertical axis or a load with a large inertia, regenerative energy is returned to the Inverter.

If main circuit overvoltage (E05) is generated during deceleration, the regenerative energy will exceed the Inverter's capacity. If this occurs, use a Braking Resistor or a Braking Resistor Unit.

• Connect the Braking Resistor as shown in the following diagram.

• When using a Braking Resistor, be sure to install a thermal relay to monitor the resistor temperature.

• Include a sequence to turn OFF the power supply to the Inverter if the Braking Resistor or Braking Resistor Unit overheats. Not doing so may result in fire.

• Braking Resistor: Use thermal relay output for temperature monitoring.

• Braking Resistor Unit: Use the Unit's fault contact output.

Braking Resistors and Braking Resistor Units for 200 V-class Inverters

Inverter Braking Resistor

(Usage rate: 3% ED)

Braking Resistor Unit

(Usage rate: 10% ED)

Minimum connection

resistance

3G3JE-A2002 3G3IV-PERF150WJ201

(200

Ω, 150 W)

3G3IV-PLKEB20P7 (200 Ω, 70 W)

200

Ω

3G3JE-A2004

R/L1

S/L2

T/L3

3G3JE Inverter

Three-phase 200 to 230 V AC

OFF

(1)

(2)

Braking Resistor/ Braking Resistor Unit

(P)

(B)

Braking Unit thermal trip contacts or external thermal rela

contacts

MCCB MC

Chapter 2

2-13

Design

• Do not connect a resistance below the minimum. Doing so will damage the Inverter.

• The usage rate is expressed as the percentage of braking time in one cycle. For example, if the cycle time is 10 s and a Braking Resistor Unit with a usage rate of 10% ED is used, braking will be possible for up to 1 s.

● Installing a Noise Filter on the Power Supply Side

• The Inverter's outputs utilize high-speed switching, so noise may be transmitted from the Inverter to the power line and adversely affect other devices in the vicinity.

• It is recommended that a Noise Filter be installed at the power supply to minimize the noise transmission. (Noise from the power line to the Inverter will also be reduced.)

Recommended Inverter Input-side Noise Filters

Note Noise filters not designed for Inverters are less effective and may not reduce noise.

■ Wiring the Output Side of the Main Circuit Terminals

● 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 (U/T1, V/T2, and W/T3) with each other and reconnect if the motor rotates in reverse with the forward command.

● Never Connect a Power Supply to Output Terminals

If voltage is applied to the output terminals, the internal circuit of the Inverter will be damaged. Never connect a power supply to output terminals U/T1, V/T2, or W/T3.

● Never Short or Ground Output Terminals

• Do not touch the output terminals with bare hands.

• If the output wires come into contact with the Inverter casing, an electrical shock or grounding will occur. This is extremely hazardous. Be careful not to short the output wires.

● 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.

General purpose For EMC compliance

3G3EV-PLNFD2103DY 3G3JV-PRS2010J

Inverter input side

(See note.)

3G3JE Inverter

Three-phase 200 to 230 V AC

MCCB

Noise Filter

Other control device

Chapter 2

2-14

Design

● Do Not Use an Electromagnetic Switch of Magnetic Contactor

• If a load is connected to the Inverter during operation, an inrush current will trigger the overcurrent protective circuit in the Inverter. Do not connect an electromagnetic switch or a magnetic contactor to the output circuit.

● Installing a Thermal Relay

The Inverter uses an electronic thermal to protect the motor from overheating. Take the following countermeasures if more than one motor is operated with one Inverter or a multi-polar motor is used.

• Install a thermal relay between the Inverter and each motor and set P01 (Rated motor current) to

0.0. (Motor overload detection (E03) will be disabled.)

• Make a sequence so that the magnetic contactor on the input side of the main circuit is turned OFF by the contacts of the thermal relay.

● 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.

Inductive Noise:Electromagnetic induction generates noise on the signal line, causing the controller

to malfunction.

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

receiver to make noise.

● Countermeasures against Induction Noise

Use the following method to prevent induction noise from being generated on the output side.

• Route cables through a grounded metal pipe. Keeping the metal pipe at least 30 cm away from the signal lines considerably reduces induction noise.

Signal line

Inductive noise

Radio noise

Controller

AM radio

3G3JE Inverter

3G3IV-PLF310KA Noise Filter

Three-phase 200 to 230 V AC

MCCB

30 cm min.

Controller

Metal pipe

Three-phase 200 to 230 V AC

MCCB

3G3JE Inverter

Signal line

Chapter 2

2-15

Design

● Countermeasures against Radio Noise

Radio noise is generated from the Inverter as well as the input and output lines. Take the following countermeasures to reduce radio noise.

• Keep the cable between the Inverter and the motor as short as possible.

• Install noise filters on both input and output sides, and also install the Inverter in a totally enclosed steel box.

● Cable Length between Inverter and Motor

We recommend always keeping the wiring distance between the Inverter and motor to 50 m or less. As the cable length between the Inverter and the motor increases, the floating capacity between the Inverter outputs and the ground increases proportionally. The increase in floating capacity at the Inverter output 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.

If the cable must be longer than 50 meters, take the following countermeasures.

• Wire in metallic ducts.

• Use a separate cable for each phase.

• Reduce the carrier frequency selection (P14) (select 4 kHz).

● Single-phase Motors Cannot Be Used

The Inverter is not suited for the variable speed control of single-phase motors because they use either capacitor starting or split-phase starting methods to determine the rotation direction at startup. Do not use a single-phase motor.

Note If a capacitor start motor is used, the capacitor may be damaged by a sudden electric dis-

charge caused by Inverter output. If a split-phase start motor is used, the starting coil may burn because the centrifugal switch does not operate.

Metal box

3G3IV-PLF310KA Noise Filter

Three-phase 200 to 230 V AC

MCCB

3G3JE Inverter

Chapter 2

2-16

Design

2-2-4 Wiring Control Circuit Terminals

■ Control Circuit Terminal Connections

• Use insulated wiring with a temperature rating of 80°C min. for control circuit terminals.

• A control signal line must be 50 m maximum and separated from power lines.

• Shielded, twisted-pair cable must be used for RS-485 signal lines, and the lines must be no more than 500 m long.

• 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.

• When solderless terminals are not used, the end of each wire for the control lines must be stripped for approximately 6 mm.

• Cover the shield with tape so that the shield will not come into contact with other signal wires or machines.

• To simplify wiring and improve reliability, it is recommended that solderless terminals be attached to control circuit lines.

● Applicable Wire Sizes, Terminal Screws, and Screw Tightening Torque

A maximum of two wires can be connected to each terminal.

1. When connecting one wire to each terminal, use the following wire size.

2. When connecting two wires to each terminal, use the following wire size.

● Solderless Terminal Size

To simplify wiring and improve reliability, it is recommended that solderless terminals be attached to control circuit lines. Use solderless terminals that match the size of the wire being used. A maximum of two solderless terminals can be connected to each terminal.

Terminal

screw size

Tightening

torque

(N·m)

Wire

Wire size (mm

)

Recommended

wire size (mm

)

Cable

M3 0.5 to 0.6 Solid wire 0.2 to 1.5

(AWG24 to AWG16)

0.75 (AWG18) Polyethylene-insulated vinyl-sheath cable

Stranded wire

0.2 to 1.5 (AWG24 to AWG16)

Shielded twisted-pair cable

0.2 to 1.5 (AWG24 to AWG16)

Terminal

screw size

Tightening

torque

(N·m)

Wire

Wire size (mm

)

Recommended

wire size (mm

)

Cable

M3 0.5 to 0.6 Solid wire 0.2 to 0.75

(AWG24 to AWG18)

0.5 (AWG20) Polyethylene-insulated vinyl-sheath cable

Stranded wire

0.2 to 0.75 (AWG24 to AWG18)

Shielded twisted-pair cable

0.2 to 0.75 (AWG24 to AWG18)

Chapter 2

2-17

Design

1. When connecting one solderless terminal to each terminal, use the following size.

2. When connecting two solderless terminals to each terminal, use the following size.

3. When connecting one 2-wire (twin) solderless terminal to each terminal, use the following size.

● Wiring Method

Wire the control I/O terminals using the following procedure.

1. Loosen the terminal screws with a thin flat-blade screwdriver.

2. Insert the wires from underneath the terminal block.

3. Tighten the terminal screws to the torque specified in the previous table.

Note Applying a torque that is greater than the specified torque may damage the terminal block. If

the tightening torque is insufficient, however, it may cause malfunction or short circuiting.

Terminal

screw size

Tightening

torque

(N·m)

Wire Solderless terminal

size (mm

)

Insulating

sleeve

Recommended

solderless terminal

model

(Mfd. by Phoenix

Contact)

M3 0.5 to 0.6 Stranded

wire

0.25 to 1.5 With/without AI 0,25-6 BU AI 0,34-8 TQ AI 0,5-8 WH AI 0,75-8 GY AI 1-8 RD AI 1,5-8 BK

Terminal

screw size

Tightening

torque

(N·m)

Wire Solderless terminal

size (mm

)

Insulating

sleeve

Recommended

solderless terminal

model

(Mfd. by Phoenix

Contact)

M3 0.5 to 0.6 Stranded

wire

0.25 to 0.5 Without A 0,5-6

Terminal

screw size

Tightening

torque

(N·m)

Wire Solderless terminal

size (mm

)

Insulating

sleeve

Recommended

solderless terminal

model

(Mfd. by Phoenix

Contact)

M3 0.5 to 0.6 Stranded

wire

0.5 to 1 With AI-TWIN 2x0,5-8 WH AI-TWIN 2x0,75-8 GY AI-TWIN 2x1-8 RD

Thin flat-blade screwdriver

Terminal bloc

Wires

Strip the end for approx. 6 mm if a solderless terminal is not used.

Attach solderless terminal or wire without soldering.

Chapter 2

2-18

Design

■ Control Circuit Input Terminal Connection Examples Using Internal 24-

V Power Supply for Models with PNP Input

● Connecting to Relay Circuits

● Connecting to PNP Transistors

Standard Models Communications Models

24 VDC

SS1

SS0

STF

STR

RS-485 (+)

RS-485 (−)

24 VDC

STF

STR

RS-485 (+)

RS-485 (−)

Standard Models Communications Models

SS0

SS1

STF

STR

24 VDC

RS-485 (+)

RS-485 (−)

24 VDC

STF

STR

RS-485 (+)

RS-485 (−)

Chapter 2

2-19

Design

■ Control Circuit Input Terminal Connection Examples Using External 24-

V Power Supply for Models with PNP Input

● Connecting to Relay Circuits

● Connecting to PNP Transistors

24 VDC

RS-485 (+)

RS-485 (−)

Standard Models Communications Models

SS1

SS0

STF

STR

STF

STR

RS-485 (+)

RS-485 (−)

24 VDC

RS-485 (+)

RS-485 (−)

Standard Models Communications Models

SS1

SS0

STF

STR

STF

STR

RS-485 (+)

RS-485 (−)

Chapter 2

2-20

Design

● Connecting to NPN Transistors

■ Control Circuit Input Terminal Connection Examples Using Internal 24-

V Power Supply for Models with NPN Input

● Connecting to Relay Circuits

24 VDC

RS-485 (+)

RS-485 (−)

Standard Models Communications Models

SS0

SS1

STF

STR

STF

STR

RS-485 (+)

RS-485 (−)

Standard Models Communications Models

SS1

SS0

STF

STR

24 VDC

RS-485 (+)

RS-485 (−)

STF

STR

24 VDC

RS-485 (+)

RS-485 (−)

Chapter 2

2-21

Design

● Connecting to NPN Transistors

■ Control Circuit Input Terminal Connection Examples Using External 24-

V Power Supply for Models with NPN Input

● Connecting to Relay Circuits

Standard Models Communications Models

SS0

SS1

STF

STR

24 VDC

RS-485 (+)

RS-485 (−)

STF

STR

24 VDC

RS-485 (+)

RS-485 (−)

24 VDC

RS-485 (+)

RS-485 (−)

Standard Models Communications Models

SS1

SS0

STF

STR

24 VDC

STF

STR

24 VDC

RS-485 (+)

RS-485 (−)

24 VDC

Chapter 2

2-22

Design

● Connecting to PNP Transistors

● Connecting to NPN Transistors

24 VDC

RS-485 (+)

RS-485 (−)

Standard Models Communications Models

SS1

SS0

STF

STR

24 VDC

STF

STR

24 VDC

RS-485 (+)

RS-485 (−)

24 VDC

RS-485 (+)

RS-485 (−)

Standard Models Communications Models

SS0

SS1

STF

STR

24 VDC

STF

STR

24 VDC

RS-485 (+)

RS-485 (−)

Chapter 2

2-23

Design

■ Control Circuit Output Terminal Connection Examples

● Connecting Sinking Outputs

● Connecting Sourcing Outputs

(+)

(−)

Load

(+)

(−)

Load

Chapter 2

2-24

Design

2-2-5 Connecting to a Digital Controller or Temperature

Controller

The 3G3JE provides an interface for connecting to the time-shared proportional pulse output of a digital controller or temperature controller, so frequency references can be used when these devices are used. This section describes how to connect the Inverter to a digital controller.

Note The frequency references for time-shared proportional pulse output and frequency reference

selections cannot be used at the same time. If P11 (Frequency reference selection) is set to T.C (Temperature controller time-shared proportional pulses), multi-step speed reference 0 (SS0) will be the temperature controller time-proportional pulse input and multi-step speed reference 1 (SS1) will be ignored.

■ Overview of Operation

The frequency setting is determined based on the ratio of ON time to OFF time within the frequency reference upper and lower limit range.

• If the ON time is 0% and the OFF time is 100%, the frequency setting will be the frequency reference lower limit.

• If the ON time is 100% and the OFF time is 0%, the frequency setting will be the frequency reference upper limit.

For example, if time-shared proportional pulses are input when the frequency reference lower limit is 20 Hz, the upper limit is 60 Hz, the control period is 10 s, the ON time is 2 s, and the OFF time is 8 s, then the frequency setting will be 28 Hz.

Frequency setting = Frequency reference lower limit + (Frequency reference upper limit

− Frequency

reference lower limit)

× (ON time/Control period)

= 20 Hz + (60 Hz

− 20 Hz) × (2 s/10 s)

= 20 Hz + 40 Hz

× 0.2

= 28 Hz

● Time Required to Switch Frequency Reference

The frequency of the time-proportional pulse input is calculated based on the ratio between the ON time and OFF time. At least one time-shared proportional pulse control cycle of the digital controller or temperature controller is required to switch the 3G3JE’s frequency reference.

■ Digital Controller and Temperature Controller Output Specifications

The digital controller or temperature controller that is connected must have the following output specifications.

• Relay output models

• Voltage output models (12 V

±10% output or 24 V ±10% output)

OFF

2 s (ON time)

10 s (Control period of digital controller)

8 s (OFF time)

Chapter 2

2-25

Design

Note When connecting to a digital controller or temperature controller with a voltage output, use a

3G3JE model with a PNP input. If a model with an NPN input is used, the power supply may be short-circuited depending on the insulation method between the controller’s voltage output section and the power supply for other control input circuits.

■ Digital Controller and Temperature Controller Settings

• Set the control period as shown below for digital controllers and temperature controllers.

• If the control period is set shorter than the lower limit or longer than the upper limit, correct operation will not be possible.

■ 3G3JE Settings

• Set the frequency reference upper limit (P07) and frequency reference lower limit (P08).

• Operation will be at the frequency reference lower limit with the time-shared proportional pulse at 0%.

• Operation will be at the frequency reference upper limit with the time-shared proportional pulse at 100%.

Note If the frequency reference upper limit is greater than the maximum frequency, change the

setting of the maximum output frequency (P06).

• Set the frequency reference selection (P11) is set to time-shared proportional pulses (T.C).

Control period lower limit 3 s Control period upper limit 10 s

Chapter 2

2-26

Design

■ Connecting to a Digital Controller or a Temperature Controller with a

Relay Output for Models with PNP Input

Connect the controller to multi-step speed reference 0 (SS0) terminal. The multi-step speed reference 1 (SS1) terminal input will be disabled.

● Control Circuit Input Terminal Connection Examples Using Internal 24-V Power

Supply

Example 1

Example 2

Digital Controller

SS0

SS1

STF

STR

24 VDC

Digital Controller

SS0

SS1

STF

STR

24 VDC

Chapter 2

2-27

Design

● Control Circuit Input Terminal Connection Examples Using External 24-V Power

Supply

Example 1

Example 2

Digital Controller

24 VDC

SS0

SS1

STF

STR

24 VDC

SS0

SS1

STF

STR

Digital Controller

24 VDC

Chapter 2

2-28

Design

Example 3

■ Connecting to a Digital Controller or a Temperature Controller with a

Relay Output for Models with NPN Input

Connect the controller to multi-step speed reference 0 (SS0) terminal. The multi-step speed reference 1 (SS1) terminal input will be disabled.

● Control Circuit Input Terminal Connection Examples Using Internal 24-V Power

Supply

Example 1

Digital Controller

24 VDC

SS0

SS1

STF

STR

24 VDC

Digital Controller

SS0

SS1

STF

STR

24 VDC

Chapter 2

2-29

Design

Example 2

● Control Circuit Input Terminal Connection Examples Using External 24-V Power

Supply

Example 1

Digital Controller

SS0

SS1

STF

STR

24 VDC

Digital Controller

24 VDC

SS0

SS1

STF

STR

24 VDC

Chapter 2

2-30

Design

Example 2

Example 3

SS0

SS1

STF

STR

24 VDC

Digital Controller

24 VDC

Digital Controller

SS0

SS1

STF

STR

24 VDC

Chapter 2

2-31

Design

■ Connecting to a Digital Controller or a Temperature Controller with a

Voltage Output for Models with PNP Input

Note When connecting to a digital controller or temperature controller with a voltage output, use a

• Connect the controller between the multi-step speed reference 0 (SS0) terminal and the external power supply common terminal (SC).

• Connect the controller's positive (+) terminal to SS0, and the negative (

−) terminal to SC. The multi-

step speed reference 1 (SS1) terminal input will be disabled.

Chapter 2

2-32

Design

● Control Circuit Input Terminal Connection Examples Using Internal 24-V Power

Supply

Example 1

Example 2

12/24 V OUT

GND

SS0

SS1

STF

STR

24 VDC

Digital Controller

12/24 V OUT

GND

SS0

SS1

STF

STR

24 VDC

Digital Controller

Chapter 2

2-33

Design

● Control Circuit Input Terminal Connection Examples Using External 24-V Power

Supply

Example 1

Example 2

12/24 V OUT

GND

SS0

SS1

STF

STR

24 VDC

Digital Controller

24 VDC

12/24 V OUT

GND

SS0

SS1

STF

STR

24 VDC

Digital Controller

24 VDC

Chapter 2

2-34

Design

2-2-6 Harmonics Suppression in General-purpose Inverters

(Input Current of 20 A Maximum)

When equipped with the AC Reactor specified in section 5-2-5, the 3G3JE meets the harmonic suppression guideline for general-purpose inverters (inverters with an input current of 20 A maximum) issued by the Japan Electronic Device Industrial Council (JEDIC).

2-2-7 Guideline to Reduce Harmonics Emissions in Appliances

Receiving High Voltages or Special High Voltages

The 3G3JE meets the Guideline to Reduce Harmonics Emissions in Appliances Receiving High Voltages or Special High Voltages (JEITA).

■ Guideline Applicability

This guideline is applicable to the following appliances.

1. Appliances receiving power from a 6.6-kV network with a total capacity exceeding 50 kVA considering the harmonics emission rate for each type of installed device emitting harmonics (called the equivalent capacity)

2. Appliances receiving power from a 22-kV or 33-kV network with equivalent capacity exceeding 300 kVA

3. Appliances receiving power from a 66-kV or higher network with equivalent capacity exceeding 2,000 kVA

The limit for harmonic current, calculation methods for the equivalent capacity, and calculation methods for the harmonic current for appliances receiving 6.6 kV are described below.

● Limit of Harmonic Current

The allowable value for the harmonic current flowing to the network from special appliances is calculated for each harmonic number by multiplying the harmonic current limit per kilowatt of contracted power given in the following table by the contracted power (in kilowatts).

Limits to Harmonic Current per kW of Contracted Power

(Unit: mA/kW)

Received voltage (kV)

5th 7th 11th 13th 17th 19th 23rd Higher

than 23rd

6.6 3.5 2.5 1.6 1.3 1.0 0.90 0.76 0.70

Chapter 2

2-35

Design

● Calculating the Equivalent Capacity per Inverter

The equivalent capacity for an inverter is calculated as follows: Equivalent capacity = Inverter’s rated input capacity (Pi) x Coefficient

Here, the Inverter’s rated input capacity (Pi) is calculated based on the rated capacity of the applicable motor, as shown in the following table.

Inverter’s Rated Input Capacity

The coefficient is as shown in the following table for a three-phase general-purpose inverter.

■ Calculating the Harmonic Current per Inverter

Use the following formula: nth harmonic current [A] =

Fundamental frequency input current [A] x nth harmonic current ratio (%)/100

Here, the values in the following table are used for the fundamental frequency input current and converted for a received voltage of 6.6 kV.

The following table is used to obtain the nth harmonic current ratio (%). Normally calculations are performed only for the 5th and 7th harmonics.

Three-phase Bridge (Capacitor Smoothing)

(Unit: %)

Motor capacity

(kW)

Rated input capacity (Pi)

(kVA)

200 V 400 V

0.4 0.57

0.75 0.97

1.5 1.95

3 Three-phase

bridge (capacitor smoothing)

3-1 No reactor K

= 3.4 General-purpose inverters

Servo amplifiers Elevators Refrigeration and air condi-

tioning equipment Other general-purpose

equipment

3-2 Reactor on AC side K

= 1.8

3-3 Reactor on DC side K

= 1.8

3-4 Reactors on AC and DC side K

= 1.4

Applicable motor [kW] 0.4 0.75 1.5 Fundamental frequency

input current [A]

200 V 1.61 2.74 5.50 400 V 0.81 1.37 2.75

Value converted for 6.6 kV [mA] 49 83 167

Harmonic number 5 7 11 13 17 19 23 25

No reactor 65 41 8.5 7.7 4.3 3.1 2.6 1.8 Reactor on AC side 38 14.5 7.4 3.4 3.2 1.9 1.7 1.3 Reactor on DC side 30 13 8.4 5.0 4.7 3.2 3.0 2.2 Reactors on AC and DC side 28 9.1 7.2 4.1 3.2 2.4 1.6 1.4

Chapter 2

2-36

Design

As described below, the result is multiplied by the maximum equipment operating rate to reduce the current.

The harmonic currents emitted by all devices at the rated operating status are totaled and then multiplied by the maximum equipment operating rate to calculate the harmonic emission current. The maximum equipment operating rate is the ratio of the total capacity of the devices emitting harmonic current to the maximum capacity of the equipment when operating. The maximum capacity of the equipment when operating is the average value over a 30-minute period.

■ 3G3JE Harmonic Current Countermeasures

● AC Reactors

AC reactors are used to suppress harmonic current. Using an AC reactor will reduce the emission rate of harmonic current as shown in the following table to improve the power rate on the Inverter’s input side. The AC reactor functions to suppress sudden currents.

● Effect of AC Reactor

Harmonic

countermeasure

Harmonic current rate for harmonic numbers (%)

5th 7th 11th 13th 17th 19th 23rd 25th

None (only Inverter)

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

B1 B2

3G3JE Inverter

AC Reactor (optional)

R/L1

S/L2

T/L3

U/T1

V/T2

W/T3

Three-phase 200 to 230 VAC

MCCB

Chapter 2

2-37

Design

2-2-8 Conforming to EC Directives

■ Applicable Directives

• EMC Directive: EN 61800-3

• Low Voltage Directive: EN 61800-5-1

■ Concepts

● EMC Directive

OMRON products are designed for compliance with related EMC standards so that they can be more easily built into other devices or the overall machine. The 3G3JE has been checked for conformity to EN 61800-3 when the following installation and wiring methods are used. EMC-related performance of the OMRON products that comply with EC Directives will vary depending on the configuration, wiring, installation, and other conditions of the equipment or control panel on which the OMRON products are installed. The customer must, therefore, perform the final check to confirm that devices and the overall machine conform to EMC standards.

● Wiring the Power Supply

• Always connect the power input terminals (R/L1, S/L2, and T/L3) and power supply via a 3G3JVPRS2010J Noise Filter (rated current: 10 A).

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

• Locate the Noise Filter as close as possible to the Inverter.

● 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.

■ Conforming to the Low Voltage Directive

The 3G3JE conforms to EN 61800-5-1 when the following installation and wiring methods are used.

• The 3G3JE is an open-frame device. Always install it in a control panel.

• Always use reinforced or double insulated power supply/voltage (SELV) wiring for the control circuit terminals.

• The Low Voltage Directive requires that protection from short-circuiting in the power supply wiring be provided with a molded-case circuit breaker (MCCB). Always install an MCCB on the power supply side of the Inverter.

• Use one MCCB per Inverter.

• Use an MCCB with the rated current given in the following table.

Model number Rated current MCCB model examples

3G3JE-A2001 3 to 5 A ABS33Fb

ABS53Fb ABS33b ABS53b

3G3JE-A2002 3 to 5 A 3G3JE-A2004 5 A

Chapter 2

2-38

Design

• Use crimp terminals with insulated sleeves for connection to the main circuit terminals.

• When not using a Braking Resistor or Braking Resistor Unit, connect crimp terminals with insulated sleeves to the braking resistor connection terminals (B1 and B2).

Standard Wiring Diagram for Conformance to EC Directives

● Precaution on Models with NPN Input (3G3JE-A2@@@N)

NPN circuits cannot be used for safety circuits. Therefore, models with an NPN input cannot be used for safety circuits specified in EN/IEC 60204-1.

L1 L1'

L2'

L3'

R/L1

S/L2

T/L3

U/T1

V/T2

W/T3

M 3~

Control circuit terminal

SELV circuit SELV circuit

MCCB

EMC-compliant, input-side noise filter 3G3JV-PRS2010J

3G3JE Inverter

Three-phase 200 to 230 V AC

Chapter 3

Operation

3-1 Key Operation Flowchart

3-2 Procedure for Test Run

3-3 Performing a Test Run

3-4 RUN Mode

3-5 Adjustment Mode

3-6 Initial Settings Mode

Chapter 3

3-2

Operation

■ Operation

• This Inverter can be set to operate from low speed to high speed. Operate the Inverter only after sufficiently confirming the allowable range for the motor installation being used.

■ Operation after Power Interruptions

• If continuing operation is selected for the momentary power interruption restart selection (P09), the system may unexpectedly start operation after a momentary power interruption is reset. Exercise suitable caution.

■ Operation Command Selection

■ Motor Overheating Protection (Electronic Thermal)

• The Inverter uses an electronic thermal to protect the motor from overheating. Set the rated current of the motor in the rated motor current parameter (P01). If more than one motor is operated with one Inverter, set the rated motor current parameter (P01) to 0.0 to disable motor overload detection, and install a thermal relay between the Inverter and each motor. Set the thermal relay to 1.0 times the nameplate current at 50 Hz and to 1.1 times the nameplate current at 60 Hz.

Precautions for Safe Use

Precautions for Correct Use

Chapter 3

3-3

Operation

3-1 Key Operation Flowchart

SP1

SP2

SP3

45 5

40.0

50.0

sp2

sp1

sp3

SP1: Frequency reference1

SP2: Frequency reference 2

SP3: Frequency reference 3

SP4: Frequency reference 4

ACC: Acceleration time

DEC: Deceleration time

LOD: Application selection

Frequency reference: Hz set

Output frequency: Hz out

Output current: A

P01: Rated motor current

P16: Communications baud rate

P18: Communications stop bits

P19: Communications parity

P20: Parameter initialization

Changed by Mode Key.

Display

Display/setting

Example: Changing the Set Value

Adjustment Mode

(1) Move to Adjustment Mode and press the Enter Key to display the present set value.

The data display will flash while a set value is being changed.

(3) Press the Enter Key to enter the desired setting.

Changed by Increment and Decrement Keys.

Accumulated operating time: Kh

Forward/reverse operation selection: FWD/REV

P02: Accumulated operating

time standard

P03: DC injection braking

frequency

P04: Startup DC injection

braking time

P05: DC injection braking-

to-stop time

P06: Maximum output

frequency

P07: Frequency reference

upper limit

P08: Frequency reference

lower limit

P09:

Momentary power interruption restart selection

P10: Operation command

selection

P11: Frequency reference

selection

P12: Multi-function output

selection

P14: Carrier frequency

selection

P15: Communications unit

number

P17: Communications data length

P21: Accumulated operating

time clear

P15 through P19 are displayed and can be set only for Communications Models.

Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys.

Changed by Increment and Decrement Keys.

Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys.

Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys. Changed by Increment and Decrement Keys.

Changed by Increment and Decrement Keys.

Note: The data display will flash

while the setting is being entered and will return to the setting item name when the flashing stops.

Mode can be change during operation or when stopped.

Mode can be change only when stopped.

Mode cannot be change directly.

Adjustment Mode

RUN Mode

Power ON

Initial Settings Mode

All the indicators light when the power is turned ON. (Key operations are disabled.)

(See note 1.)

(See note 2.)

Note 1:

P11 can be set only on Standard Models.

P13: Reverse rotation prohibit

selection

(2) Use the Increment and Decrement Keys to change the set value.

Press the Mode Key for at least 1 s.

Press the Enter Key for at least 1 s.

Press the Mode Key for at least 1 s.

Chapter 3

3-4

Operation

3-2 Procedure for Test Run

1. Installation and Mounting

Install the Inverter according to the installation conditions. Refer to page 2-4.

• Make sure that the installation conditions are met.

2. Wiring and Connection

Connect to the power supply and peripheral devices. Refer to page 2-6.

• Select peripheral devices that meet the specifications and wire correctly.

3. Power ON

Carry out the following pre-connection checks before turning ON the power supply. Refer to page 3-5.

4. Checking the Display Status

Check to be sure that there are no faults in the Inverter. Refer to page 3-5.

5. Initializing Parameters

Initialize the parameters. Refer to page 3-5.

6. Setting Parameters

Set the parameters required for a test run. Refer to page 3-6.

7. No-load Operation

Start the motor without a load using the RUN Key. Refer to page 3-7.

8. Actual Load Operation

Connect the mechanical system and use the Digital Operator for operation. Refer to page 3-8.

9. Operation

Chapter 3

3-5

Operation

3-3 Performing a Test Run

This section describes performing a test run. Refer to Chapter 2 Design for information on Inverter installation and wiring.

■ Confirmation before Performing a Test Run

• Confirm that all installation conditions have been met.

• Confirm that peripheral devices that conform to all specifications have been used and that they are wired correctly.

■ Checkpoints before Connecting the Power Supply

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

•3G3JE-A2@: Three-phase 200 to 230 V AC

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

• Make sure 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).

■ Connecting the Power Supply

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

• The entire display and setting/monitoring indicators will light (except for the COM indicator) when the power supply is turned ON. The display and indicators will read as follows if the Inverter is normal. Data display: Shows the present frequency reference. Simplified-LED indicators: Only frequency reference indicator (Hz set) will be lit.

• If an error has occurred, the error parameter will be displayed on the data display. If that occurs, refer to Chapter 4 Maintenance Operations and take the required action.

■ Using Parameter Initialization (P20)

• Initialize the parameters using the following procedure before performing a trial run. When the parameters are initialized, all values except for the accumulated operating time will be returned to their default settings.

1 Turning ON the Power

2 Checking the Display Status

3 Initializing Parameters

Chapter 3

3-6

Operation

• Parameter initialization is executed using P20 (parameter initialization) in the initial settings mode.

■ Setting the Rated Motor Current (P01)

• Set the motor current parameter in P01 before the trial run to prevent the motor from burning due to overloading.

• Set the rated current indicated on the specifications nameplate of the motor that is to be used.

• This parameter is used for the electronic thermal function for detecting motor overload (E03). Setting it correctly protects the motor by preventing it from burning even if an overload occurs.

• Motor overload (E03) detection is disabled by setting the parameter to 0.0

• Refer to 3-6-1 Setting the Rated Motor Current for details on the rated motor current (P01).

Note The default setting for the rated motor current is the standard rated current of the maximum

applicable motor.

Key sequence Indicator Display example Description

None @ Hz set The entire display and simplified-LED indicators

will light (except for the COM indicator) when the power supply is turned ON. The present frequency reference will be displayed on the data display.

1s min.

None Press the Mode Key for at least 1 s to move to Ini-

tial Settings Mode.

None Set p20 using the Increment and Decrement Keys.

None Press the Enter Key. The set value will be entered.

None Press the Increment and Decrement Keys and

select ini. The data display will flash.

None Press the Enter Key. The set values will be initial-

ized to their default values except for the accumulated operating time. The data display will stop flashing and p20 will be displayed.

1 s min.

@ Hz set Press the Mode Key for at least 1 s to return to the

RUN mode.

4 Setting Parameters

P01 Rated motor current Changes during

operation

Setting range 0.0 to 2.5 (A) Setting unit 0.1 A Default setting See note.

Maximum applicable

motor capacity

Default dated

current setting [A]

0.1 kW 0.6

0.2 kW 1.0

0.4 kW 2.0

10.0

p01

p20

abt

ini

p20

10.0

Chapter 3

3-7

Operation

■ No-load Motor Operation

Before performing operation with the mechanical system actually connected, operate the motor with no load (i.e., not connected to the mechanical system) using the Digital Operator keys.

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

• Check that the directions of rotations match. If operation is in the wrong direction, reverse any two of the motor output wires.

• The Increment and Decrement Keys can be used to change the frequency when the

@ Hz set indi-

cator is lit.

• Refer to 3-4-3 Changing the Frequency Reference for information on changing the frequency refer- ence.

Key sequence Indicator Display example Explanation

1 s min.

None Press the Mode Key for at least 1 s to move to Ini-

tial Settings Mode.

None Use the Increment or Decrement Key to display

p01.

None Press the Enter Key to display the value currently

set in P01.

None Use the Increment or Decrement Key to set the

rated motor current for the motor that is to be used. The display will flash while the value is being set.

None Press the Enter Key to enter the set value. The

data display will stop flashing and p01 will be displayed.

5 No-load Operation

Key sequence Indicator Display example Explanation

@ Hz set Go to RUN mode and press the Mode Key to light

the @

Hz set indicator. The present frequency reference will be displayed on the data display.

@ Hz set Set the frequency using the Increment and Decre-

ment Keys.(It is recommended that the test run be first conducted at low frequency.)

@ Hz set @ RUN

Press the RUN Key. The @ RUN Indicator will be lit.

@ Hz set @ RUN

The frequency can be changed using the Increment and Decrement Keys.

p01

2.0

1.8

p01

10.0

12.3

RUN

12.3

20.0

Chapter 3

3-8

Operation

■ Stopping the Motor

• When finished operating the motor in the no-load state, press the STOP/RESET Key. The motor will stop.

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

• Confirm that the motor has stopped completely before connecting the mechanical system.

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

• If an error occurs during operation, immediately press the STOP/RESET Key on the Digital Operator.

• First set the frequency reference to a low speed of one tenth the normal operating speed. (Set the frequency reference somewhat lower than the actual operating speed.)

■ Checking the Operating Status

• Check that the operating direction is correct and that the machine is operating smoothly at slow speed before increasing 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 to confirm that the output current is not becoming excessive.

• Refer to 3-4-4 Selecting Forward or Reverse Operation for information on forward/reverse operation selection. If parameter initialization (P20) is performed, reverse operation will be prohibited (P13). To change the direction of rotation for actual load operation, enable reverse operation (P13). Refer to 3-6-9 Selecting Reverse Rotation Prohibition for information on the reverse rotation prohibit selection (P13).

Key sequence Indicator Display example Explanation

@ RUN Goes out.

Press the STOP/RESET Key to stop the motor. The @ RUN indicator will go out and the motor will stop.

6 Actual Load Operation

STOP

RESET

20.0

Chapter 3

3-9

Operation

3-4 RUN Mode

3-4-1 Run/Stop Command

Set P01 in the initial settings mode to the rated current given on the motor’s nameplate before operation. Setting the rated current correctly will protect the motor from burning due to an overload. For details on the procedure, refer to 3-6-1 Setting the Rated Motor Current.

■ Operating and Stopping

• Press the RUN KEY to operate the motor.

• Press the STOP/RESET KEY to stop the motor.

• The @ RUN indicator will light during operation.

• In RUN mode, operation can always be started or stopped regardless of whatever item is currently being displayed.

Key sequence Indicator Display example Explanation

@ Hz set Go to RUN mode and press the Mode Key to

light the @

Hz set indicator. The present frequency reference will be displayed on the data display.

@ RUN Press the RUN Key to start the motor. The @

RUN indicator will light.

@ RUN Goes out.

Press the STOP/RESET Key to stop the motor. The @

RUN indicator will go out.

60.0

RUN

60.0

STOP

RESET

60.0

Chapter 3

3-10

Operation

3-4-2 Selecting the Item to be Displayed

■ Changing the Display Item

• The Mode Key can be pressed to change the display item in the order shown below.

• The display item can be change during operation or when operation is stopped.

Note The

@ RVS indicator will not light when forward operation is set and fwd will be displayed on the

data display

. If reverse operation is set, the @ RVS indicator will light and rev will be displayed

on the data display.

3-4-3 Changing the Frequency Reference

■ Range for Changing the Frequency Reference

• The frequency reference is set in increments of 0.1 Hz for less than 100 Hz and in increments of 1 Hz at 100 Hz or higher. The setting range for the frequency reference is between the frequency reference upper limit (P07) and the frequency reference lower limit (P08) set in the initial settings mode. (Set the frequency reference upper limit and frequency reference lower limit in initial settings mode.)

■ Setting the Frequency Reference

• The frequency reference can be set during operation or while operation is stopped.

Display Key

sequence

Indicator Display

example

Explanation

Frequency reference

@ Hz set The entire display and simplified-LED indi-

cators will light (except for the COM indicator) when the power supply is turned ON. The present frequency reference will be displayed on the data display.

Output frequency

@ Hz out When the Mode Key is pressed while the @

Hz set indicator is lit, the output frequency will be displayed. At the same time the @ Hz out indicator will light.

Output current @ A When the Mode Key is pressed while the @

Hz out indicator is lit, the present output current will be displayed. At the same time the @ A indicator will light.

Accumulated operating time

@ Kh When the Mode Key is pressed while the @

A indicator is lit, the present accumulated operating time will be displayed. At the same time the @ Kh indicator light will light.

Forward/ reverse operation selection

None (See note.) (@ RVS)

When the Mode Key is pressed while the @ Kh indicator is lit, the present direction of rotation will be displayed. No indicator will light.

60.0

0.0

fwd

Chapter 3

3-11

Operation

3-4-4 Selecting Forward or Reverse Operation

• The rotation direction can be changed during operation or while operation is stopped.

• If parameter initialization (P20) is performed, reverse operation will be prohibited (P13). To change the direction of rotation for actual load operation, enable reverse operation (P13). Refer to 3-6-9 Selecting Reverse Rotation Prohibition for information on the reverse rotation prohibit selection (P13).

■ Selecting the Rotation Direction

Note The @ RVS indicator will not light when forward operation is set and fwd will be displayed on the

data display

. If reverse operation is set, the @ RVS indicator will light and rev will be displayed

on the data display.

Key sequence Indicator Display example Explanation

@ Hz set The entire display and simplified-LED indicators

will light (except for the COM indicator) when the power supply is turned ON. The present frequency reference will be displayed on the data display. (If @ Hz set does not light, press the Mode Key to light it.)

@ Hz set Set the frequency reference using the Incre-

ment and Decrement Keys.

None @ Hz set The set value will be entered when the Incre-

ment and Decrement Keys are released and acceleration or deceleration will start.

Key sequence Indicator Display example Explanation

None @ Hz set The entire display and simplified-LED indicators

will light (except for the COM indicator) when the power supply is turned ON. The present frequency reference will be displayed on the data display.

None Press the Mode Key. The forward/reverse oper-

ation setting will be displayed. (The present rotation direction will be displayed on the data display.)

None (See note.) (@ RVS)

Set the direction of rotation using the Increment and Decrement Keys. (Press the Increment Key during forward operation to switch to reverse operation. Press the Decrement Key during reverse operation to switch to forward operation.)

60.0

10.0

6.0

fwd

reV

Chapter 3

3-12

Operation

3-5 Adjustment Mode

• Switching from RUN mode to adjustment mode is possible at any time by pressing the Enter Key for 1 second or longer.

• Switching from adjustment mode back to RUN mode is possible by pressing the Enter Key for 1 second or longer when any of the following adjustment items is being displayed: SP1 to SP4, ACC, DEC, or LOD. If a set value is being displayed, press the Enter Key to display the setting item name.

3-5-1 Setting Frequency References 1 to 4

• Four frequency references can be remembered internally in the Inverter.

• The frequency references 1 to 4 are set in increments of 0.1 Hz for less than 100 Hz and in increments of 1 Hz for 100 Hz or greater.

• Frequency references 1 to 4 are enabled when P11 (frequency reference selection) is set to MSP (multi-step speed reference).

■ Relation between Control Circuit Terminals and Frequency Reference

Multi-step speed reference 0 (SS0) and multi-step speed reference 1 (SS1) can be used together to select one of the following frequency references.

Note Multi-step speed references are supported only for Standard Models.

SP1 Frequency reference 1 Changes during

operation

Ye s

Setting range 0.0 to 120 (Hz) Setting unit 0.1 Hz Default setting 10.0

SP2 Frequency reference 2 Changes during

operation

Ye s

Setting range 0.0 to 120 (Hz) Setting unit 0.1 Hz Default setting 0.0

SP3 Frequency reference 3 Changes during

operation

Ye s

Setting range 0.0 to 120 (Hz) Setting unit 0.1 Hz Default setting 0.0

SP4 Frequency reference 4 Changes during

operation

Ye s

Setting range 0.0 to 120 (Hz) Setting unit 0.1 Hz Default setting 0.0

Multi-step speed reference SS0 SS1

Frequency reference 1 (SP1) OFF OFF Frequency reference 2 (SP2) ON OFF Frequency reference 3 (SP3) OFF ON Frequency reference 4 (SP4) ON ON

Chapter 3

3-13

Operation

■ Setting Frequency References 1 to 4

3-5-2 Setting Acceleration and Deceleration Times

• The acceleration time and the deceleration time are set separately.

• The acceleration time is the time required to accelerate from 0% to 100% of the maximum output frequency (P06), and the deceleration time is the time required to decelerate from 100% to 0% of the maximum output frequency.

• The setting unit for the acceleration and deceleration times is 0.1 s for less than 100 s, and 1 s for 100 s or more.

• If the load inertia is high, the acceleration and deceleration times must be increased. For details, refer to 7-1 Selecting the Inverter at the end of this manual.

• The acceleration/deceleration time between 0 and the frequency reference is calculated with the following formula.

Acceleration/deceleration time = (Acceleration/deceleration time setting)

× (Frequency reference)

÷ (Maximum output frequency setting)

Note When accelerating from a stopped condition, the starting DC breaking time must be added.

Key sequence Indicator Display example Explanation

None @ Hz set The entire display and simplified-LED indicators

will light (except for the COM indicator) when the power supply is turned ON. The present frequency reference will be displayed on the data display.

1 s min.

None Pressing the Enter Key for 1 s or longer

changes the mode to the adjustment mode. sp1 will be displayed on the data display.

None Select the item to be displayed using the Incre-

ment and Decrement Keys.

None When the Enter Key is pressed, the present set

value for the selected item will be displayed.

None Set the frequency reference using the Incre-

ment and Decrement Keys. The data display will flash.

None When the Enter Key is pressed, the set value

will be entered. When the data display stops flashing, operation will be returned to the set item selection.

1 s min.

@ Hz set None Press the Enter Key for at least 1 s to return to

the RUN mode.

sp1 sp3

6.0

sp1

sp3

28.3

32.0

sp3

Chapter 3

3-14

Operation

■ Setting the Acceleration Time

■ Setting the Deceleration Time

ACC Acceleration time Changes during

operation

Setting range 0.1 to 999 (s) Setting unit 0.1 s Default setting 10.0

DEC Deceleration time Changes during

operation

Setting range 0.1 to 999 (s) Setting unit 0.1 s Default setting 10.0

Key sequence Indicator Display example Explanation

None @ Hz set The entire display and simplified-LED indicators

will light (except for the COM indicator) when the power supply is turned ON. The present frequency reference will be displayed on the data display.

1 s min.

None Pressing the Enter Key for 1 s or longer

changes the mode to the adjustment mode. sp1 will be displayed on the data display.

None Use the Increment and Decrement Keys to dis-

play acc on the data display.

None When the Enter Key is pressed, the present set

value will be displayed.

None Set the acceleration time using the Increment

and Decrement Keys. The data display will flash.

None Pressing the Enter Key will enter the set value.

When the data displays stops flashing, the adjustment item name will again appear on the data display.

Key sequence Indicator Display example Explanation

None @ Hz set The entire display and simplified-LED indicators

will light (except for the COM indicator) when the power supply is turned ON. The present frequency reference will be displayed on the data display.

1 s min.

None Pressing the Enter Key for 1 s or longer

changes the mode to the adjustment mode. sp1 will be displayed on the data display.

(Hz)

100%

(t)

(Hz)

100%

(t)

Acceleration time Deceleration time

Maximum output frequency (P06)

6.0

sp1

acc

10.0

20.5

acc

6.0

sp1

Chapter 3

3-15

Operation

3-5-3 Selecting the Application (Setting V/f Patterns)

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

• With the 3G3JE, either of the two patterns below can be selected as the pattern for V/f characteristics.

• The 3G3JE has an automatic torque boost function. The suitable torque characteristics can be obtained by simply selecting the load application.

None Use the Increment and Decrement Keys to dis-

play dec on the data display.

None When the Enter Key is pressed, the present set

value will be displayed.

None Set the deceleration time using the Increment

and Decrement Keys. The data display will flash.

None Pressing the Enter Key will enter the set value.

When the data displays stops flashing, the adjustment item name will again appear on the data display.

LOD Application selection Changes during

operation

Selected item CNV/FAN Default setting CNV

Selected item Characteristics and

application

Description

CNV (cnv) Constant torque character-

istics (for conveyers)

Select for applications such as conveyers, where the load torque is uniform regardless of the rotation speed and the load moment of inertia is high.

FAN (fan) Gradual decrease torque

characteristics (for fan)

Select for applications such as fans and pumps, where the load torque is lower when the rotation speed is slower.

Key sequence Indicator Display example Explanation

dec

10.0

20.5

dec

Output voltage (V)

Frequency (Hz)

Constant torque characteristics

Gradual decrease torque characteristics

Chapter 3

3-16

Operation

■ Setting the Application Selection

Key sequence Indicator Display example Explanation

None @ Hz set The entire display and simplified-LED indicators

will light (except for the COM indicator) when the power supply is turned ON. The present frequency reference will be displayed on the data display.

1 s min.

None Pressing the Enter Key for 1 s or longer

changes the mode to the adjustment mode. sp1 will be displayed on the data display.

None Use the Increment and Decrement Keys to dis-

play lod on the data display.

None When the Enter Key is pressed, the present set

value will be displayed.

None Press the Increment and Decrement Keys to

select the application to match the usage. The data display will flash.

None Pressing the Enter Key will enter the set value.

When the data displays stops flashing, the adjustment item name will again appear on the data display.

6.0

sp1

lod

fan

cnV

lod

Chapter 3

3-17

Operation

3-6 Initial Settings Mode

• It is always possible to change from the RUN mode or adjustment mode to the initial settings mode by pressing the Mode Key for at least one second while the motor is stopped.

• It is possible to change from the initial settings mode to the RUN mode by pressing the Mode Key for at least one second while an initial settings mode parameter name (P01 to P21) is displayed. Display the initial settings mode parameter name by pressing the Enter Key while the set value is displayed.

• Any set values that are changed will become valid when the RUN mode is entered.

• If the power is turned OFF while a setting has being changed but before RUN mode is entered, the change will be lost when power is turned back ON.

■ Example Settings in Initial Settings Mode

3-6-1 Setting the Rated Motor Current

• Set P01 to the rated current given on the motor’s nameplate before operation. Setting the rated current correctly will protect the motor from burning due to an overload. Read the information in Motor Overheating Protection (Electronic Thermal) under Precautions for Correct Use on page 3-2.

Key sequence Indicator Display example Explanation

None @ Hz set The entire display and simplified-LED indicators

will light (except for the COM indicator) when the power supply is turned ON. The present frequency reference will be displayed on the data display.

1 s min.

None Pressing the Mode Key for 1 s or longer

changes the mode to the initial settings mode. p01 will be displayed on the data display.

None Select the item to be displayed using the Incre-

ment and Decrement Keys.

None When the Enter Key is pressed, the present set

value for the selected item will be displayed.

None Use the Increment and Decrement Keys to

make the setting. The data display will flash.

None Pressing the Enter Key will enter the set value.

When the data displays stops flashing, the adjustment item name will again appear on the data display.

1 s min.

@ Hz set Press the Mode Key for at least 1 s to return to

the RUN mode.

p01 p06

60.0

6.0

p01

p06

60.0

58.3

p06

6.0

Chapter 3

3-18

Operation

• Motor overload (E03) detection is disabled by setting the parameter to 0.0.

Note The default setting for this parameter is the common rated current of the maximum applicable

motor.

3-6-2 DC Injection Braking Function

The DC injection braking function applies a DC voltage to the induction motor for braking control.

• Startup DC Injection Braking Time This braking is used for stopping and starting a motor rotating by inertia with no regenerative processing.

• DC Injection Braking-to-stop Time Adjust the stop DC injection braking time if the motor rotating does not decelerate to a stop in normal operation due to inertia. Increasing the DC injection braking time or DC injection braking frequency reduces the time required to stop the motor.

• When starting, acceleration will start after the startup DC injection braking time (P04) has elapsed.

• After decelerating to the DC injection braking frequency (P03) when stopping, DC injection braking will be applied for the DC injection braking-to-stop time (P05).

P01 Rated motor current Changes during

operation

Setting range 0.0 to 2.5 (A) Setting unit 0.1 A Default setting See note.

Maximum applicable

motor capacity

Default dated

current setting [A]

0.1 kW 0.6

0.2 kW 1.0

0.4 kW 2.0

P03 DC injection braking frequency Changes during

operation

Setting range 0.0 to 5.0 (Hz) Setting unit 0.1 Hz Default setting 3.0

P04 Startup DC injection braking time Changes during

operation

Setting range 0.0 to 10.0 (s) Setting unit 0.1 s Default setting 0.0

P05 DC injection braking-to-stop time Changes during

operation

Setting range 0.0 to 10.0 (s) Setting unit 0.1 s Default setting 0.5

Chapter 3

3-19

Operation

DC Braking Operation

3-6-3 Maximum Output Frequency

• This parameter functions as a frequency limiter.

• Acceleration and deceleration times are defined as the times required to reach the maximum output frequency (P06) from 0 Hz and to reach 0 Hz from the maximum output frequency (P06).

Note The setting unit for the frequency reference upper and lower limits is 0.1 Hz for less than

100 Hz, and 1 Hz for 100 Hz or higher.

3-6-4 Setting Frequency Reference Upper and Lower Limits

• Upper and lower limits are set for the frequency reference input from the Digital Operation, frequency references 1 to 4, time-proportional pulse inputs, or communications.

• If the frequency reference lower limit (P08) is higher than the frequency reference upper limit (P07), operation will be at the frequency lower limit.

• If the frequency reference upper limit (P07) or frequency reference lower limit (P08) is set higher than the maximum output frequency (P06), the maximum output frequency will be used for the frequency reference upper limit or frequency reference lower limit. (The settings will be automatically replaced when RUN mode is entered.)

Note The setting unit for the frequency reference upper and lower limits is 0.1 Hz for less than 100

Hz, and 1 Hz for 100 Hz or greater.

P06 Maximum output frequency Changes during

operation

Setting range 50.0 to 120 (Hz) Setting unit 0.1 Hz (See note.) Default setting 60.0

P07 Frequency reference upper limit Changes during

operation

Setting range 0.1 to 120 (Hz) Setting unit 0.1 Hz (See note.) Default setting 60.0

Time

(P05)

(P04)

Output frequency

Startup DC injection braking time

DC injection braking frequency

(P03)

DC injection braking-tostop time

Chapter 3

3-20

Operation

3-6-5 Selecting the Processing after Recovery from a

Momentary Interruption

• Use this parameter to select the processing to be performed when a momentary power interruption occurs.

• When setting 1 or 2 is selected, an alarm is output when low voltage is detected in the main circuit, and the alarm is automatically cancelled when the normal voltage resumes.

• If the power interruption is longer that the time for which Inverter operation can be performed, the operation after recovery from the power interruption will be the same as the startup operation.

3-6-6 Selecting Operation Commands

• This parameter selects the input method for specifying Inverter starting, stopping, and direction of rotation.

• There are two methods that can be selected for operation commands. Select the best method for the application.

P08 Frequency reference lower limit Changes during

operation

Setting range 0.1 to 120 (Hz) Setting unit 0.1 Hz (See note.) Default setting 0.0

P09 Momentary power interruption restart selection Changes during

operation

Setting range 0 to 2 Default setting 0

Set value Description

0 (0) Inverter stops operating. (If the interruption lasts for 15 ms or longer, main circuit low voltage

will be detected and an error will occur.)

1 (1) Inverter continues operating if power interruption is 0.5 s or less. (If a power interruption

occurs when 1 is set for 0.5 s, the main circuit low voltage is detected and outputs are stopped while waiting for power to be restored. If power is restored within 0.5 s, operation resumes.)

2 (2) Inverter always continues operating. (If a power interruption occurs when 2 is set, outputs are

stopped while waiting for power to be restored. When power is restored, outputs are resumed.)

P10 Operation command selection Changes during

operation

Selected item Key/PLC Default setting Key

Selected item Description

Key (key) Operation commands are performed using the Digital Operator keys. PLC (plc) Operation commands are performed using the STF and STR control inputs.

Chapter 3

3-21

Operation

3-6-7 Frequency Reference Selection

• This parameter selects the method for inputting frequency references for the Inverter.

• There are three methods for inputting frequency references. Select the method according to the application.

Note 3G3JE Communications Models (RS-485) do not have external inputs to select the frequency,

so this parameter is not displayed.

Description of Selections

3-6-8 Selecting the Function for the Multi-function Output

This parameter is used to select the function of the multi-function output.

Description of Set Values

P11 Frequency reference selection Changes during

operation

Selected item Key/MSP/T.C Default setting Key

Selected item Description

Key (key) Frequency reference set using Digital Operator keys. MSP (msp) Frequency reference according to multi-step speed reference 0 (SS0) and multi-step speed

reference 1 (SS1).

T.C ( t.c) Frequency reference using temperature controller time-shared proportional pulses via multi-

step speed reference 0 (SS0).

P12 Multi-function output selection Changes during

operation

Setting range 0 to 3 Default setting 0

Set value Function name Description

0 (0) Not allocated --1 (1) Zero speed Output turned ON when the output frequency is 0 Hz or opera-

tion is stopped.

2 (2) Frequency matching Output turned ON when the output frequency and the frequency

reference are the same.

3 (3) Reverse operation Output turned ON when the direction of rotation is set for

reverse operation.

Chapter 3

3-22

Operation

3-6-9 Selecting Reverse Rotation Prohibition

• This parameter is used to specify whether to enable or disable a reverse rotation command sent to the Inverter.

• The parameter must be set to prohibit reverse operation when the Inverter is applied to applications in which reverse rotation of the Inverter would cause problems.

3-6-10 Setting the Carrier Frequency

• With the 3G3JE, it is possible to switch between two carrier frequencies.

• Change the carrier frequency in the following cases. Reduce the carrier frequency to 4 kHz if there are fluctuations in the speed or torque at low speeds or if the wiring distance between the Inverter and motor is excessively long.

3-6-11 Initializing Parameters

• The parameters can be initialized to their default values.

• Parameters are initialize when P20 is set to “ini” and then the Enter Key is pressed.

• The frequency reference will also be initialized to the default value.

• The motor accumulated operating time will not be initialized.

P13 Reverse rotation prohibit selection Changes during

operation

Selected item F. R / F W D Default setting FWD

Selected item Description

F. R ( f.r) Allow reverse operation FWD (fwd) Prohibit reverse operation (reverse operation disabled)

Wiring distance Carrier frequency (guideline)

50 m or less 4 kHz or 7 kHz Longer than 50 m 4 kHz

P14 Carrier frequency selection Changes during

operation

Setting range 4/7 (kHz) Default setting 4k

Set value Description

4 (4k)4 kHz 7 (7k)7 kHz

P20 Parameter initialization Changes during

operation

Setting range ini/abt Default setting abt

Set value Description

ini (ini) Initialize abt (abt) Abort

Chapter 3

3-23

Operation

3-6-12 Motor Accumulated Operating Time

• The 3G3JE keeps track of the motor's accumulated operating time. An alarm is output when the motor's total operating time reaches the accumulated operating time standard. This function can be useful in managing the equipment's maintenance periods.

● Accumulated Operating Time Standard

This parameter sets the accumulated operating time standard for outputting the accumulated operating time alarm (E09).

Note 1 Kh=1000 hours

● Accumulated Operating Time Clear

• This parameter is used to reset the accumulated operating time to zero when equipment maintenance is performed or when the motor is replaced. The time is cleared when the parameter is set to “ini”.

• To clear the accumulated operating time alarm, either or both of the following two methods must be used.

1.Increase the accumulated operating time standard to a value greater than the present set value. This method does not reset the accumulated operating time, so the alarm will be output again when the motor's operating time reaches the new accumulated operating time standard.

2.Reset the accumulated operating time. The alarm will again be output at the point where the motor's operating time reaches the accumulated operating time standard from the point where it was cleared.

3-6-13 Setting Communications

■ Communications Settings

This section describes how to set the parameters (P15 to P19) for Communications Models (RS-

485). There are five parameters that can be set: Communications unit number, baud rate, data length, stop bits, and parity.

Note For details on communications specifications, wiring, and communications commands, refer to

the Communications Manual.

P02 Accumulated operating time standard Changes during

operation

Setting range 0.0 to 99.9 Setting unit 0.1 Kh Default setting 20.0

P21 Accumulated operating time clear Changes during

operation

Setting range ini/abt Default setting abt

Set value Description

ini (ini) Resets the accumulated operating time to 0.0. abt (abt)Abort

Chapter 3

3-24

Operation

● Setting the Communications Unit Number

Sets the Communications unit number.

● Setting the Communications Baud Rate

Sets the communications baud rate.

● Setting the Communications Data Length

Sets the communications data length.

● Setting the Communications Stop Bits

Sets the number of communications stop bits.

P15 Communications unit number Changes during

operation

Setting range 0 to 99 Default setting 1

P16 Communications baud rate Changes during

operation

Setting range 2.4/4.8/9.6/19.2 (kbps) Default setting 9.6

Selected item Description

24 (24) 2.4 kbps 48 (48) 4.8 kbps 96 (96) 9.6 kbps 192 (192) 19.2 kbps

P17 Communications data length Changes during

operation

Setting range 7/8 (bits) Default setting 7

Selected item Description

7 (7) 7 bits 8 (8) 8 bits

P18 Communications stop bits Changes during

operation

Setting range 1/2 (bits) Default setting 2

Selected item Description

1 (1)1 bit 2 (2) 2 bits

Chapter 3

3-25

Operation

● Setting the Communications Parity

Sets the communications parity.

P19 Communications parity Changes during

operation

Selected item None/even/odd Default setting Even

Selected item Description

non (non)None evn (evn)Even odd (odd)Odd

Chapter 3

3-26

Operation

Chapter 4

Maintenance Operations

4-1 Protective and Diagnostic Functions

4-2 Troubleshooting

4-3 Maintenance and Inspection

Chapter 4

4-2

Maintenance Operations

■ Operation and Maintenance

• Take measures to assure safety before performing maintenance or inspection, or replacing components.

■ Operation Command Selection

■ Disposing of the Inverter

• Observe all applicable legal requirements when disposing of the Inverter.

Caution

Do not touch the Inverter terminals while the power is being supplied or for at least one minute after the power has been turned OFF.

Doing so may occasionally result in minor injury from electrical shock.

Do not remove the fan cover except when replacing the fan. Before replacing the fan, first turn OFF the power and disconnect the wiring.

Doing so may occasionally result in minor injury from electrical shock.

Precautions for Safe Use

Precautions for Correct Use

Chapter 4

4-3

Maintenance Operations

4-1 Protective and Diagnostic Functions

This section describes the fault information output for Inverter protection, motor burning protection, and Inverter internal circuit protection. If a fault occurs, refer to Fault Displays and Corrective Mea- sures on page 4-4 and take suitable corrective measures.

■ Inverter Faults

• If a fault occurs, the Inverter will display a fault message on the Digital Operator.

• The fault contact output will operate and the Inverter output will be turned OFF, causing the motor to coast to a stop.

Note The stopping method can be selected for some faults.

• Inverter output will not be interrupted for an accumulated operating time fault.

■ Clearing Faults

Faults can be cleared using any of the following methods.

• Turn the power supply OFF and back ON again.

• If the PLC has been selected for the operation command selection (P10), turn STF ON and then OFF again.

• If key operations have been selected for the operation command selection (P10), press the STOP/ RESET Key on the Digital Operator.

• Execute the STOP/RESET operation command with a communications command. (This can be done with Communications Models only.)

Chapter 4

4-4

Maintenance Operations

■ Fault Displays and Corrective Measures

Fault

display

Fault name and

meaning

Probable cause Correction

e02 Overcurrent

The momentary overcurrent (250% of rated output current) was exceeded.

The overload rated current (150% of rated output current for 1 min) was detected.

A short-circuit or ground fault has occurred at the Inverter output.

Check and correct the motor

power cable. A fault has occurred in the machine. Correct the machine fault. The motor capacity is too large for the

Inverter.

Reduce the motor capacity to

the maximum permissible

motor capacity or less. The Inverter capacity is insufficient. Increase the Inverter capacity. The magnetic contactor on the output

side of the Inverter has been opened and closed.

Rearrange the sequence so

that the magnetic contactor

will not open or close while the

Inverter is outputting a

current. The acceleration/deceleration time is

too short.

Increase the acceleration/

deceleration time. The output circuit of the Inverter is

damaged.

Replace the Inverter.

The load is too large. Reduce the load.

e03 Motor overload

The electronic thermal relay actuated the motor overload protective function.

The load is too large. • Reduce the load.

• Increase the motor capacity.

The acceleration/deceleration time is too short.

Increase the acceleration/

deceleration time. The value in P01 for rated motor cur-

rent is incorrect.

Check the motor nameplate

and set P01 to the rated cur-

rent. The Inverter is driving more than one

motor.

Disable the motor overload

detection function and install a

thermal relay for each of the

motors. The motor overload

detection function is disabled

by setting P01 to 0.0.

e04 Overvoltage

The main circuit DC voltage reached the overvoltage detection level (410 V DC min.) during Inverter operation.

The deceleration time is too short. Increase the deceleration

time. The power supply voltage is too high. Decrease the voltage to within

specifications. There is excessive regenerative energy

due to overshooting at the time of acceleration.

Suppress the overshooting as

much as possible.

Chapter 4

4-5

Maintenance Operations

e05 Main circuit under-

voltage

The main circuit DC voltage reached the undervoltage detection level (200 V DC) during Inverter operation.

Power supply to the Inverter has phase loss or the power cable is disconnected.

Check the wiring and check for loose screws and disconnected wires and correct any problems.

Incorrect power supply voltage Make sure that the power sup-

ply voltage is within specifications

Momentary power interruption has occurred.

• Use the momentary power interruption restart (Set P09 to 1 or 2.)

• Improve the power supply

The internal circuitry of the Inverter is damaged.

Replace the Inverter.

e06 Radiation fin over-

heated

The temperature of the radiation fins of the Inverter has exceeded the specified temperature.

The ambient temperature is too high. Ventilate the Inverter or install

a cooling unit.

The installation space is insufficient. Increase the space around the

Inverter.

The load is too large. • Reduce the load.

• Increase the Inverter capacity.

The acceleration/deceleration time is too short.

Increase the acceleration/ deceleration time.

The ventilation is obstructed. Change the location of the

Inverter to meet the installation conditions.

The cooling fan of the Inverter does not work. (The cooling fan's service life has expired, or the fan is broken.)

Replace the cooling fan. (Applies to Inverters with fans.)

e07 Cooling fan fault

The cooling fan has been locked (stopped) or the rotation speed is down by 30% or more.

Note: The motor output will stop if it’s locked or the speed is down by 50% or more. A fault will be output if the speed is down 30% or more.

The cooling fan wiring has a fault. Turn OFF the Inverter, remove

the Inverter, and check and repair the wiring.

The cooling fan is not in good condition. Check and remove the for-

eign material or dust on the fan.

The cooling fan is faulty or beyond its service life.

Replace the fan.

e08 Braking IGBT fault

The brake IGBT is malfunctioning.

The IGBT is damaged. Turn OFF the Inverter power

immediately, and replace the Inverter.

e09 Accumulated time

alarm

The Inverter's accumulated time has reached the accumulated operating time standard (P02) that was set.

To cancel the alarm, set the accumulated operating time clear parameter (P21) to ini, or increase the existing accumulated operating time standard (P02).

Fault

display

Fault name and

meaning

Probable cause Correction

Chapter 4

4-6

Maintenance Operations

e01 Memory fault

A fault was detected in the Inverter's internal memory.

Internal circuit fault If the fault persists even after

the power has been turned OFF and back ON, then replace the Inverter.

t5t EEPROM write error A power interruption occurred during

an overload.

Turn the Inverter power OFF and back ON. (The immediately preceding accumulated operating time is not added.)

Not lit Power supply fault,

power supply undervoltage, control power supply fault, or hardware error

No power supply is provided. Check and correct the power

supply wire and voltage.

Terminal screws are loosened. Check and tighten the termi-

nal screws.

The Inverter is damaged. Replace the Inverter.

Fault

display

Fault name and

meaning

Probable cause Correction

Chapter 4

4-7

Maintenance Operations

4-2 Troubleshooting

Due to parameter setting errors, faulty wiring, and so on, the Inverter and motor may not operate correctly. If that should occur, use this section as a reference and take the appropriate measures. Refer to 4-1 Protective and Diagnostic Functions, if a fault is displayed.

Parameters cannot be set.

The motor does not operate.

• The stall prevention function has operated during acceleration. The acceleration time is automatically increased to make tripping less likely to occur due to overcurrent during acceleration.

• The stall prevention function has operated during deceleration. The deceleration time is automatically increased to make tripping less likely to occur due to overvoltages during deceleration.

Problem Probable cause Correction

The display does not change when a key is pressed.

Initial settings mode cannot be entered during operation.

Turn OFF the Inverter and then make the settings.

Nothing is displayed on the Digital Operator.

Cannot be determined. If the fault persists even after the power has

been turned OFF and back ON, then replace the Inverter.There is an internal circuit fault.

Problem Probable cause Correction

The motor does not operate with input through the control circuit terminals

PLC is not selected in the operation command selection (P10).

If “Key” (Digital Operator keys) is selected for the operation command selection (P10), operations cannot be specified from the control circuit terminals. Select PLC in the operation command selection (P10).

The wiring of the control circuit terminals of the Inverter is incorrect.

The Inverter cannot check the input signal if the input line of the control circuit terminals is incorrectly wired. Refer to 2-2-4 Wiring Control Circuit Terminals and check that the terminals are wired according to the correct wiring method.

The motor stops during acceleration/deceleration or when a load is connected.

The load may be too big. The 3G3JE has a stall prevention function and

automatic torque boost function, but the motor responsiveness limit may be exceeded if acceleration is too rapid or if the load is too big. Lengthen the acceleration time or reduce the load. Also consider increasing the motor capacity.

The motor operates at a frequency lower than the frequency reference.

The load may be too big. The overcurrent protection may operate when

the output current exceeds 150% of the Inverter’s rated current, lowering the output frequency. Reduce the load.

Chapter 4

4-8

Maintenance Operations

■ The Inverter does not operate or the motor operates only briefly when

the Controller power supply is turned OFF.

● Faulty Sequence

The motor will not operate if both the Forward/Stop Command (STF) and the Reverse/Stop Command (STR) are input at the same time. Correct the sequence.

● Malfunction due to Unwanted Current Path (when Using an Internal Power Supply

for a Model with an NPN Input)

The Inverter input may remain ON if there is an unwanted current path in the controller output. With the wiring shown below, the Inverter input will operate due to the current path indicated by the arrow if the controller output power supply is less than 24 VDC or the power supply is OFF. If this occurs, insert a diode as indicated in the diagram at section A.

Controller (Output Unit)

Inverter (Control input)

SS0 SS1 STF STR

GND

Section A

24 V

Chapter 4

4-9

Maintenance Operations

The motor only rotates in one direction.

The motor is rotating in the wrong direction.

The motor is burning out.

Problem Probable cause Correction

Reverse rotation prohibition is selected.

If P13 (reverse rotation prohibit selection) is set to FWD (prohibit reverse operation), the Inverter will not accept reverse-rotation commands.

To use both forward and reverse rotation, set P13 to “F.R.”

Problem Probable cause Correction

The output wiring of the motor is faulty.

The U/T1, V/T2, and W/T3 terminals of the Inverter are not properly connected to the U, V and W terminals of the motor.

When the U/T1, V/T2, and W/T3 terminals of the Inverter are properly connected to the U, V and W terminals of the motor, the motor will operate in a forward direction when a forward rotation command is executed. The forward direction depends on the manufacturer and the motor type. Therefore, be sure to check the specifications.Switching two wires among the U/T1, V/T2, and W/T3 will reverse the direction of rotation.

Problem Probable cause Correction

The load is too big. If the load of the motor is too big

and the motor is used with the effective torque exceeding the rated torque of the motor, the motor will burn out.

Reduce the load amount by either reducing the load or lengthening the acceleration/deceleration time. Also consider increasing the motor capacity.

Note: For example, the rated torque of the motor and capacity may be limited to eight hours of use if the inscription on the motor states that the motor is rated for eight hours. If the 8-hour rated torque is used for normal operation, it may cause the motor to burn out.

The ambient temperature is too high

The rating of the motor is determined within a particular ambient operating temperature range. The motor will burn out if it runs continuously at the rated torque in an environment in which the maximum ambient operating temperature is exceeded.

Lower the ambient temperature of the motor to within the acceptable ambient operating temperature range.

The withstand voltage between the phases of the motor is insufficient.

When the motor is connected to the output of the Inverter, a surge will be generated between the switching of the Inverter and the coil of the motor. Normally, the maximum surge voltage is approximately three times the input power supply voltage of the Inverter (i.e., approximately 600 V for 200-V Inverters).

Therefore, the dielectric strength of the motor to be used must be higher than the maximum surge voltage.

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Maintenance Operations

Controller or AM radio receives noise when Inverter is started.

The ground fault interrupter is actuated when Inverter is started.

There is mechanical vibration.

Problem Probable cause Correction

Noise derives from Inverter switching.

Take the measures to prevent noise. Noise can be reduced to some extent.

Lower the carrier frequency of the Inverter in P14 to 4 kHz.

Install an Input Noise Filter on the power input area of the Inverter.

Install an Output Noise Filter on the output area of the Inverter.

Enclose the Inverter with a metal shield and ground the shield.

Problem Probable cause Correction

Leakage current flows through the Inverter.

The Inverter performs internal switching. Therefore, a leakage current flows through the Inverter. This leakage current may actuate the ground fault interrupter, shutting the power OFF.

Note: In addition, remember that a leakage current increases in proportion to the cable length. (Normally, approximately 5 mA of leakage current is generated for each meter of cable.)

Use a ground fault interrupter with a high leakage-current detection value (sensitivity amperage of 200 mA or more, operating time of 0.1 s or more) or one with high-frequency countermeasures for Inverter use. Reducing the carrier frequency value in P14 is also effective.

Problem Probable cause Correction

The mechanical system is making unusual noise.

Resonance is occurring between the characteristic frequency of the mechanical system and the carrier frequency.

If the motor is running with no problems and the machinery system is vibrating with a highpitched whine, it may indicate that there resonance is occurring between the characteristic frequency of the mechanical system and the carrier frequency. To prevent this type of resonance, adjust the carrier frequency value in P14.

Resonance is occurring between the characteristic frequency of the mechanical system and the output frequency of the Inverter.

Install vibration-proof rubber on the motor base to prevent the resonance of the mechanical system.

The motor vibrates excessively and does not rotate normally.

Motor Phase Interruption. If one or two of the three phases

of the motor are open, the motor will vibrate excessively and will not rotate.

Check that the motor is wired correctly without any disconnection. The same phenomenon will occur if the output transistor of the Inverter is open and damaged. Check the balance of the Inverter's output voltage as well.

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Maintenance Operations

The motor rotates even after Inverter output is stopped.

When the motor starts, an overcurrent fault (E02) is detected and the motor stalls.

Problem Probable cause Correction

The motor rotates even after Inverter output is stopped.

If the motor continues operating at low speed, without completely stopping, even after a deceleration stop has been executed, it means that the DC injection braking is not decelerating enough.

Increase the parameter in P05 for DC injection braking-to-stop time or increase the deceleration time.

Problem Probable cause Correction

When the motor starts, an overcurrent fault (E02) is detected and the motor stalls.

DC injection braking is insufficient at startup. This can also occur if the motor is already turning when the motor is started.

This can be prevented by slowing the rotation of the motor by DC injection braking before starting the motor. Increase the parameter in P04 for startup DC injection braking time.

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Maintenance Operations

4-3 Maintenance and Inspection

■ Daily Inspection

Check the following items with the Inverter in operation.

• The motor must not be vibrating or making unusual noises.

• There must be no abnormal heat generation.

• The output current value shown on the monitor display must not be higher than normal.

• The cooling fan must be operating normally. (This applies only to Inverter models that have a cooling fan.)

■ Periodic Inspection

Check the following items during periodic maintenance.

• The terminal screws of the Inverter must not be loose.

• There must be no conductive dust or oil mist on the terminal block or inside the Inverter.

• The mounting screws of the Inverter must not be loose.

• No dust must be accumulating on the vents of the Inverter.

• There must be no abnormalities in the outward appearance of the Inverter.

• The control panel cooling fan must be operating normally.

■ Periodic Maintenance of Parts

The Inverter is configured of many parts, and these parts must operate properly to make full use of the Inverter's functions. Among the electronic components, there are some that require maintenance depending on their usage conditions. To keep the Inverter operating normally over a long period of time, it is necessary to perform periodic inspections and replace parts according to their service life.

(Taken from the JEMA publication Recommended Periodic Inspections of General-purpose Invert- ers.)

Periodic inspection standards vary with the installation environment and usage conditions of the Inverter. To lengthen the maintenance period, it is recommended that you lower the ambient temperature, and minimize the time during which the power is ON. The maintenance period of the Inverter is described below. Keep this as reference.

Note For details regarding maintenance, consult your OMRON representative.

• Cooling fan: 5 years

Usage Conditions (When mounted as described in the User’s

Manual)

Ambient temperature 40

°C

Load ratio 80% Operating time per day 12 hours

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Maintenance Operations

■ Replacing the Cooling Fan

If a cooling fan fault (E07) is displayed, or if the cooling fan needs replacement, take the following steps to replace it.

1.Remove the fan cover mounting screws.

2.Insert a flat-blade screwdriver into the slot (indicated by “A”), and pull off the fan cover in the direction indicated by “1.”

3.Remove the fan and pull out the fan connector (in the direction indicated by “2”) from the socket on the board side in the case. Do not pull on the wires alone. Doing so may break the wires.

4.Insert the connector for the new fan into the socket on the board side in the case. Position the connector so that the connector latches are aligned.

5.Secure the fan in the case. Check that the wiring direction is as shown in Fig. 2, and mount the fan with the seal facing outwards.

6.Replace the fan cover and tighten the mounting screws.

The cooling fan replacement is now complete.

● Replacement Cooling Fan Model (for 3G3JE)

For details on cooling fan models, refer to 5-2 Option Specifications.

Fan cover mounting screw

Fig. 1

Fig. 2

Fan connector

Keep the fan seal to the outside.

Chapter 4

4-14

Maintenance Operations

Omron EasySpeed 3G3JE User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual