Omron J7 User Manual

Download

Manual No. I63E-EN-01



Compact General Purpose Inverter



NOTICE

Thank you for choosing this VARISPEED J7-series product. Proper use and handling of the product will ensure proper product performance, will lengthen product life, and may prevent possible accidents. Please read this manual thoroughly and handle and operate the product with care.

1. To ensure safe and proper use of the OMRON-YASKAWA Inverters, please read this USER’S MANUAL (Cat. No. I63-EN-01) to gain sufficient knowledge of the devices, safety information, and precautions before actual use.

2. The products are illustrated without covers and shieldings for closer look in this USER’S MANUAL. For actual use of the products, make sure to use the covers and shieldings as specified.

3. This USER’S MANUAL and other related user’s manuals are to be delivered to the actual end users of the products.

4. Please keep this manual close at hand for future reference.

5. If the product has been left unused for a long time, please inquire at our sales representative.

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

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

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

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

• Precautions on the dangers of high-voltage equipment.

• Precautions on touching the terminals of the product even after power has been turned OFF. (These terminals are live even with the power turned OFF.)

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

Items to Check Before Unpacking

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

• Has the correct product been delivered (i.e., the correct model number and specifications)?

• Has the product been damaged in shipping?

• Are any screws or bolts loose?

Notice

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

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

DANGER

WARNING

Caution

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

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Additionally, there may be severe property damage.

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

OMRON-YASKAWA Product References

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

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

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

Visual Aids

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

Note Indicates information of particular interest for efficient and convenient

operation of the product.

III

General Precautions

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

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

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

WARNING

Caution

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

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

Do not damage, pull on, apply stress to, place heavy objects on, or pinch the cables. Doing so may result in electrical shock.

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

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

Do not store, install, or operate the product in the following places. Doing so may result in electrical shock, fire or damage to the product.

• Locations subject to direct sunlight.

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

• Locations subject to condensation as the result of 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.

Do not touch the Inverter radiator, regenerative resistor, or Servomotor while the power is being supplied or soon after the power is turned OFF. Doing so may result in a skin burn due to the hot surface.

Do not conduct a dielectric strength test on any part of the Inverter. Doing so may result in damage to the product or malfunction.

Caution

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

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

• Locations subject to strong electromagnetic fields and magnetic fields.

• Locations subject to possible exposure to radioactivity.

• Locations close to power supplies.

Transportation Precautions

Caution

Do not hold by front cover or panel , instead, hold by the radiation fin (heat sink) while transporting the product. Doing so may result in injury.

Caution

Installation Precautions

WARNING

Caution

Wiring Precautions

WARNING

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

Use the eye-bolts only for transporting the Inverter. Using them for transporting the machinery may result in injury or malfunction.

Provide an appropriate stopping device on the machine side to secure safety. (A holding brake is not a stopping device for securing safety.) Not doing so may result in injury.

Provide an external emergency stopping device that allows an instantaneous stop of operation and power interruption. Not doing so may result in injury.

Be sure to install the product in the correct direction and provide specified clearances between the Inverter and control panel or with other devices. Not doing so may result in fire or malfunction.

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

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

Wiring must be performed only after confirming that the power supply has been turned OFF. Not doing so may result in electrical shock.

WARNING

Caution

Wiring must be performed by authorized personnel. Not doing so may result in electrical shock or fire.

Be sure to confirm operation only after wiring the emergency stop circuit. Not doing so may result in injury.

Always connect the ground terminals to a ground of 100 W or less for the 200V AC class, or 10 W or less for the 400-V AC class. Not connecting to a proper ground may result in electrical shock.

Install external breakers and take other safety measures against shortcircuiting in external wiring. Not doing so may result in fire.

Confirm that the rated input voltage of the Inverter is the same as the AC power supply voltage. An incorrect power supply may result in fire, injury, or malfunction.

Connect the Braking Resistor and Braking Resistor Unit as specified in the manual. Not doing so may result in fire.

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

Be sure to firmly tighten the screws on the terminal block. Not doing so may result in fire, injury, or damage to the product.

Caution

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

Operation and Adjustment Precautions

WARNING

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

Do not remove the front cover, terminal covers, bottom cover, Operator, or optional items while the power is being supplied. Doing so may result in electrical shock or damage to the product.

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

WARNING

Caution

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

Do not come close to the machine when using the error retry function because the machine may abruptly start when stopped by an alarm. Doing so may result in injury.

Do not come close to the machine immediately after resetting momentary power interruption to avoid an unexpected restart (if operation is set to be continued in the processing selection function after momentary power interruption is reset). Doing so may result in injury.

Provide a separate emergency stop switch because the STOP Key on the Operator is valid only when function settings are performed. Not doing so may result in injury.

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

Be sure to confirm permissible ranges of motors and machines before operation because the Inverter speed can be easily changed from low to high. Not doing so may result in damage to the product.

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

Do not perform a signal check during operation. Doing so may result in injury or damage to the product.

Caution

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

Maintenance and Inspection Precautions

WARNING

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

WARNING

Caution

Warning Labels

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

Maintenance, inspection, or parts replacement must be performed by authorized personnel. Not doing so may result in electrical shock or injury.

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

Carefully handle the Inverter because it uses semiconductor elements. Careless handling may result in malfunction.

Do not change wiring, disconnect connectors, the Operator, or optional items, or replace fans while power is being supplied. Doing so may result in injury, damage to the product, or malfunction.

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

VII

Contents of Warning

Checking Before Unpacking

Checking the Product

On delivery, always check that the delivered product is the VARISPEED J7 Inverter that you ordered.

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

• For CIMR-J7AZ20P1 to 20P7 (0.1 to 0.75 kW) and CIMR-J7AZB0P1 to B0P4 (0.1 to 0.4 kW):

• For CIMR-J7AZ21P5 to A4P0 (1.5 to 4.0 kW), CIMR-J7AZB0P7 to B1P5 (0.75 to 1.5 kW), and CIMR-J7AZ40P2 to 44P0 (0.2 to 3.7 kW):

Checking the Nameplate

Checking the Model

CIMR—J7AZ20P1

Inverter

J7 series

A: With digital operator (with potentiometer)

Z: European standard specifications

Max. applicable motor output 0P1: 0.1 kW

4P0: 4.0 kW

"P" indicates a decimal

[ ]

point

Voltage B: Single-phase 200 VAC 2: Three-phase 200 VAC 4: Three-phase 400 VAC

VIII

Maximum Applicable Motor Capacity

0P1 0.1 (0.1) kW

0P2 0.25/0.37 (0.2) kW

0P4 0.55 (0.4) kW

0P7 1.1 (0.75) kW

1P5 1.5 (1.5) kW

2P2 2.2 (2.2) kW

4P0 4.0 (4.0) kW

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

Voltage Class

2 Three-phase 200-V AC input (200-V class)

B Single-phase 200-V AC input (200-V class)

4 Three-phase 400-V AC input (400-V class)

Checking for Damage Check the overall appearance and check for damage or scratches resulting

form transportation.

About this Manual

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

Chapter Contents

Chapter 1 Overview Describes features and nomenclature.

Chapter 2 Design Provides dimensions, installation methods, wiring methods, peripheral device

Chapter 3 Preparing for Operation and Monitoring

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

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

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

Chapter 7 Communications Describes the RS-422/485 Communications Unit and the general-purpose

Chapter 8 Maintenance Operations Provides maintenance, inspection, and troubleshooting information.

Chapter 9 Specifications Provides Inverter specifications, as well as the specifications and dimensions of

Chapter 10 List of Parameters Lists basic information on Inverter parameters as a reference for users already

Chapter 11 Using the Inverter for a Motor

design information, and peripheral device selection information.

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

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

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

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

RS-422/485 communications functions provided by the Inverter, including connection methods.

peripheral devices.

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

Describes information on using the Inverter for a motor.

Read and Understand this Manual

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

Warranty and Limitations of Liability

WARRANTY

OMRON-YASKAWA’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-YASKAWA.

OMRON-YASKAWA 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-YASKAWA 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-YASKAWA for any act exceed the individual price of the product on which liability is asserted.

IN NO EVENT SHALL OMRON-YASKAWA BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS OMRON-YASKAWA’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-YASKAWA 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-YASKAWA 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-YASKAWA PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.

PROGRAMMABLE PRODUCTS

OMRON-YASKAWA 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 construc-

tion 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-YASKAWA 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-YASKAWA’s test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON-YASKAWA 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.

XII

CHAPTER 1

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

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

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

CHAPTER 2

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2-1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2-2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

CHAPTER 3

Preparing for Operation and Monitoring . . . . . . . . . . 33

3-1 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3-2 Outline of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

CHAPTER 4

Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4-1 Procedure for Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4-2 Operation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

CHAPTER 5

Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

5-1 Initial Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5-2 V/f Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

5-3 Setting the Local/Remote Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5-4 Selecting the Operation Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5-5 Setting the Frequency Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

5-6 Setting the Acceleration/Deceleration Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

5-7 Selecting the Reverse Rotation-prohibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

5-8 Selecting the Interruption Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

5-9 Multi-function I/0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

5-10 Analog Monitor Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

CHAPTER 6

Advanced Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

6-1 Setting the Carrier Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

6-2 DC Injection Braking Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

6-3 Stall Prevention Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

6-4 Overtorque Detection Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

6-5 Torque Compensation Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

6-6 Slip Compensation Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

6-7 Other Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

XIII

Table of Contents

CHAPTER 7

Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

7-1 RS-422/485 Communications Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

7-2 Inverter Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

7-3 Message Communications Basic Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

7-4 DSR Message and Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

7-5 Enter Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

7-6 Setting the Communications Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

7-7 Register Number Allocations in Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

7-8 Communications Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

7-9 Self-diagnostic Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

CHAPTER 8

Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

8-1 Protective and Diagnostic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

8-2 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

8-3 Maintenance and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

CHAPTER 9

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

9-1 Inverter Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

9-2 Specifications of Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

9-3 Option Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

CHAPTER 10

List of Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

CHAPTER 11

Using the Inverter for a Motor. . . . . . . . . . . . . . . . . . 159

XIV

CHAPTER 1

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

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

Overview

Function Chapter 1-1

1-1 Function

The compact simple VARISPEED J7-Series Inverter ensures greater ease of use than any conventional model. The VARISPEED J7 Inverter meets EC Directives and UL/cUL standard requirements for worldwide use.

VARISPEED J7 Inverter Models

The following 3-phase and single-phase 200-V AC-class, and 3-phase 400-V AC-class J7AZ models are available.

Rated voltage Protective structure Maximum applied

3-phase 200 V AC Panel-mounting models

(conforming to IP20)

Single-phase 200 V AC Panel-mounting models

(conforming to IP20)

3-phase 400 V AC Panel-mounting models

(conforming to IP20)

motor capacity kW

0.1 CIMR-J7AZ20P1

0.25 CIMR-J7AZ20P2

0.55 CIMR-J7AZ20P4

1.1 CIMR-J7AZ20P7

1.5 CIMR-J7AZ21P5

2.2 CIMR-J7AZ22P2

4.0 CIMR-J7AZ24P0

0.1 CIMR-J7AZB0P1

0.25 CIMR-J7AZB0P2

0.55 CIMR-J7AZB0P4

1.1 CIMR-J7AZB0P7

1.5 CIMR-J7AZB1P5

0.37 CIMR-J7AZ40P2

0.55 CIMR-J7AZ40P4

1.1 CIMR-J7AZ40P7

1.5 CIMR-J7AZ41P5

2.2 CIMR-J7AZ42P2

4.0 CIMR-J7AZ44P0

Note It is not possible to connect a Braking Resistor or Braking Unit to a J7-series

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

Model

International Standards (EC Directives and UL/cUL Standards)

The J7 Inverter meets the EC Directives and UL/cUL standard requirements for worldwide use.

Classification Applicable standard

EC Directives EMC Directive EN50081-2 and EN5008-2

Versatile Easy-to-use Functions

Suppression of Harmonics

Low-Voltage Directive

UL/cUL UL508C

• Incorporates the functions and operability ensured by the conventional J7AZ Series.

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

• Ease of maintenance. The cooling fan is easily replaceable. The life of the cooling fan can be prolonged by turning on the cooling fan only when the Inverter is in operation.

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

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

prEN50178

Nomenclature Chapter 1-2

1-2 Nomenclature

Panel

Digital operator

Function display LEDs

Selected function is lit (see the functions below). Its data is

Data display

displayed on data display.

Display selection key

Switch functions among function display LEDs.

Enter key

Enter data when setting constants. After selecting constant no. at PRGM mode, data are displayed.

Increment key

Increase constant no. or data.

Decrement key

Decrease constant no. or data.

Stop/Reset key

Press to stop the motor. If fault occurs, reset the inverter.

Operation key

Press to run the motor. The RUN light is ON while running.

Alarm LED

Run LED

Frequency setting volume

Set operational frequency with volume.

Note 1. The front cover functions as a terminal cover. The Digital Operator Unit

cannot be removed.

2. Instead of mounting holes, each of the following models has two U-shaped cutouts located diagonally. CIMR-J7AZ20P1 (0.1 kW), CIMR-J7AZ20P2 (0.25 kW), CIMR-J7AZ20P4 (0.55 kW), and CIMR-J7AZ20P7 (1.1 kW) CIMR-J7AZB0P1 (0.1 kW), CIMR-J7AZB0P2 (0.25 kW), and CIMR-J7AZB0P4 (0.55 kW)

Nomenclature Chapter 1-2

Digital Operator

Indicators

Data display

(Setting/Monitor item indicators)

Keys

Appearance Name Function

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

and parameter set values.

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

frequency.

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

FOUT indicator The output frequency of the Inverter can be monitored while this indicator is lit.

IOUT indicator The output current of the Inverter can be monitored while this indicator is lit.

MNTR indicator The values set in U01 through U10 are monitored while this indicator is lit.

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

operating the Inverter with the RUN Key.

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

set parameters is selectable while this indicator is lit. Note This status of this indicator can be only monitored while the Inverter is in

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

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

indicator is lit. Note While the Inverter is in operation, the parameters can be only monitored

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

Mode Key Switches the setting and monitor item indicators in sequence.

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

Increment Key Increases multi-function monitor numbers, parameter numbers, and parameter

set values.

FREQ adjuster

Decrement Key Decreases multi-function monitor numbers, parameter numbers, and

parameter set values.

Enter Key Enters multi-function monitor numbers, parameter numbers, and internal data

values after they are set or changed.

RUN Key Starts the Inverter running when the J7AZ is in operation with the Digital

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

Operator.

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

Note For safety reasons, the reset will not work while a RUN command (forward or

reverse) is in effect. Wait until the RUN command is OFF before resetting the Inverter.

CHAPTER 2

2-1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2-1-1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2-1-2 Installations Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2-2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2-2-1 Removing and Mounting the Covers . . . . . . . . . . . . . . . . . . . . . . . . 11

2-2-2 Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2-2-3 Standard Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2-2-4 Wiring around the Main Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2-2-5 Wiring Control Circuit Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2-2-6 Conforming to EC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Design

Installation Chapter 2-1

2-1 Installation

2-1-1 Dimensions

CIMR-J7AZ20P1 to CIMR-J7AZ20P7 (0.1 to 0.75 kW) 3-phase 200-V AC Input

CIMR-J7AZB0P1 to CIMR-J7AZB0P4 (0.1 to 0.4 kW) Single-phase 200-V AC Input

118

128

656

Rated voltage Model CIMR-J7AZ- Dimensions (mm) Weight (kg)

DD1 t

3-phase 200 V AC 20P1 70 10 3 Approx. 0.5

20P2 70103 Approx. 0.5

20P4 102 42 5 Approx. 0.8

20P7 122 62 5 Approx. 0.9

Single-phase 200 V AC B0P1 70 10 3 Approx. 0.5

B0P2 70 10 3 Approx. 0.5

B0P4 112 42 5 Approx. 0.9

8.5

Installation Chapter 2-1

CIMR-J7AZ21P5 to CIMR-J7AZ22P2 (1.5 to 2.2 kW) 3-phase 200-V AC Input

CIMR-J7AZB0P7 to CIMR-J7AZB1P5 (0.75 to 1.5 kW) Single-phase 200-V AC Input

CIMR-J7AZ40P2 to CIMR-J7AZ42P2 (0.2 to 2.2 kW) 3-phase 400-V AC Input

Two, 5-dia. holes

118

128

6 96

108

8.5

Rated voltage Model CIMR-J7AZ- Dimensions (mm) Weight (kg)

DD1

3-phase 200 V AC 21P5 129 64 Approx. 1.3

22P5 154 64 Approx. 1.5

Single-phase 200 V AC B0P7 129 64 Approx. 1.5

B1P5 154 64 Approx. 1.5

3-phase 400 V AC 40P2 81 16 Approx. 1.0

40P4 99 34 Approx. 1.1

40P7 129 64 Approx. 1.5

41P5 154 64 Approx. 1.5

42P2 154 64 Approx. 1.5

Installation Chapter 2-1

CIMR-J7AZ24P0 (4.0 kW) 3-phase 200-V AC Input

CIMR-J7AZ44P0 (4.0 kW) 3-phase 400-V AC Input

Two, 5-dia. holes

128

118

Rated voltage Model CIMR-J7AZ- Dimensions (mm) Weight (kg)

3-phase 200 V AC 24P0 161 71 Approx. 2.1

3-phase 400 V AC 44P0 161 71 Approx. 2.1

128

140

8.5

DD1

2-1-2 Installations Conditions

WARNING

Caution

Provide an appropriate stopping device on the machine side to secure safety. (A holding brake is not a stopping device for securing safety.) Not doing so may result in injury.

Provide an external emergency stopping device that allows an instantaneous stop of operation and power interruption. Not doing so may result in injury.

Be sure to install the product in the correct direction and provide specified clearances between the Inverter and control panel or with other devices. Not doing so may result in fire or malfunction.

Caution

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

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

Installation Chapter 2-1

Installation Direction and Dimensions

Install the Inverter under the following conditions.

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

• Humidity: 95% or less (no condensation)

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

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

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

Direction Install the Inverter on a vertical surface so that the characters on the

nameplate are oriented upward.

Dimensions When installing the Inverter, always provide the following clearances to allow

normal heat dissipation from the Inverter.

W = 30 mm min.

Inverter Inverter Inverter

W W W 100 mm min.

Ambient Temperature Control

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

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

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

100 mm min. Air

Side

Air

Protecting Inverter from Foreign Matter during Installation

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

Wiring Chapter 2-2

2-2 Wiring

WARNING

Caution

Wiring must be performed only after confirming that the power supply has been turned OFF. Not doing so may result in electrical shock.

Wiring must be performed by authorized personnel. Not doing so may result in electrical shock or fire.

Be sure to confirm operation only after wiring the emergency stop circuit. Not doing so may result in injury.

Always connect the ground terminals to a ground of 100 Ω or less for the 200V AC class, or 10 Ω or less for the 400V AC class. Not connecting to a proper ground may result in electrical shock.

Install external breakers and take other safety measures against shortcircuiting in external wiring. Not doing so may result in fire.

Confirm that the rated input voltage of the Inverter is the same as the AC power supply voltage. An incorrect power supply may result in fire, injury, or malfunction.

Connect the Braking Resistor and Braking Resistor Unit as specified in the manual. Not doing so may result in fire.

Caution

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

Be sure to firmly tighten the screws on the terminal block. Not doing so may result in fire, injury, or damage to the product.

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

Wiring Chapter 2-2

2-2-1 Removing and Mounting the Covers

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

Removing the Front Cover

• Loosen the front cover mounting screws with a screwdriver.

• Press the left and right sides of the front cover in the arrow 1 directions and lift the bottom of the cover in the arrow 2 direction to remove the front cover as shown in the following illustration.

Removing the Top and Bottom Protection Covers and Optional Cover

Removing the Top and Bottom Protection Covers

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

Removing the Optional Cover

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

Positon A

Wiring Chapter 2-2

2-2-2 Terminal Block

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

Position of Terminal Block

Ground terminal

Main circuit input terminals

Control circuit terminals

Main circuit output terminals

Arrangement of Control Circuit Terminals

Arrangement of Main Circuit Terminals

• CIMR-J7AZ20P1 to CIMR-J7AZ20P7 CIMR-J7AZB0P1 to CIMR-J7AZB0P4

• CIMR-J7AZ21P5 to CIMR-J7AZ24P0 CIMR-J7AZB0P7 to CIMR-J7AZB4P0 CIMR-J7AZ40P2 to CIMR-J7AZ44P0

Main Circuit Input Terminals Main Circuit Input Terminals (Upper Side) (Upper Side)

Ground terminal

Main Circuit Output Terminals Main Circuit Output Terminals (Lower Side) (Lower Side)

Wiring Chapter 2-2

Main Circuit Terminals

Symbol Name Description

R/L1 Power Supply input terminals CIMR-J7AZ2_: 3-phase 200 to 230 V AC

S/L2

T/L3

U/T1 Motor output terminals 3-phase power supply output for driving motors.

V/T2

W/T3

CIMR-J7AZB_: Single-phase 200 to 240 V AC CIMR-J7AZ4_: 3-phase 380 to 460 V AC Note Connect single-phase input to terminals R/L1 and S/L2.

CIMR-J7AZ2_: 3-phase 200 to 230 V AC CIMR-J7AZB_: 3-phase 200 to 240 V AC CIMR-J7AZ4_: 3-phase 380 to 460 V AC

+1 Connection terminals +1 and +2:

–

DC reactor connection terminals +1 and –:

DC power supply input terminals

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

Note The maximum output voltage corresponds to the power supply input voltage

of the Inverter.

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

When driving the Inverter with DC power, input the DC power to terminals +1 and –. (Terminal +1 is a positive terminal.)

CIMR-J7AZ2_: Ground at a resistance of 100 Ω or less. CIMR-J7AZB_: Ground at a resistance of 100 Ω or less. CIMR-J7AZ4_: Ground at a resistance of 10 Ω or less, and connect

to the power supply’s neutral phase to conform to EC Directives. Note Be sure to connect the ground terminal directly to the

motor frame ground.

Wiring Chapter 2-2

Control Circuit Terminals

Symbol Name Function Signal level

Input S1 Forward/Stop Forward at ON. Stops at OFF. Photocoupler

8 mA at 24 V DC

S2 Multi-function input 1 (S2) Set by parameter n36

(Reverse/Stop)

S3 Multi-function input 2 (S3) Set by parameter n37

(Fault reset)

S4 Multi-function input 3 (S4) Set by parameter n38

(External fault:Normally open)

S5 Multi-function input 4 (S5) Set by paramter n39

(Multi-step reference 1)

SC Sequence input common Common for S1 through S5

Note NPN is the default setting

for theses terminals. Wire them by providing a common ground. No external power supply is required. To provide an external power supply and wire the terminals through a common positive line, however, set the SW7 to PNP and make sure that the power supply is at 24 V DC ±10%.

FS Frequency reference

power supply

FR Frequency reference input Input terminal for frequency

FC Frequency reference common Common for frequency

Output MA Multi-function contact output

(Normally open)

MB Multi-function contact output

(Normally closed)

MC Multi-function contact output

common

AM Analog monitor output Set by parameter n44

AC Analog monitor output

common

Note 1. Depending on the parameter settings, various functions can be selected

for multi-function inputs and multi-function contacts outputs.

2. Functions in parentheses are default settings.

Selecting Input Method

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

DC power supply for frequency reference use

reference use

Set by parameter n40 (during running)

Common for MA and MB use

(Output frequency)

Common for AM use

20 mA at 12 V DC

0 to 10 V DC (input impedance: 20 kΩ)

Relay output 1 A max. at 30 V DC 1 A max. at 250 V AC

2 mA max. at 0 to 10 V DC

SW7 SW8

Selector

Control circuit terminal block

Wiring Chapter 2-2

Selecting Frequency Reference Input Method

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

NPN

PNP

24V DC

24 V DC

(+10%)

S1 to 5

GND

3.3k

SW7

0.1µ

GND

SW7

0.1µ

24V

360

24V

360

Selecting Frequency Reference Input Method

GND

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

Frequency

reference input

method

Voltage input V (OFF) Set value 2

Current input I (ON) Set value 3 or 4

SW8 setting Frequency

reference selection

(parameter n03)

Wiring Chapter 2-2

2-2-3 Standard Connections

DC reactor (optional)

Noise Filter

3-phase 200 V AC Single-phase 200 V AC (see note 1) 3-phase 400 V AC

Forward/Stop

Multi-function input 1 (S2)

Multi-function input 2 (S3)

Multi-function input 3 (S4)

Multi-function input 4 (S5)

Sequence input common

Frequency reference power supply 20 mA at +12 V

FREQ adjuster

(2kΩ, 1/4 W min.)

Frequency reference input

Frequency reference common

Note 1. Connect single-phase 200 V AC to terminals R/L1 and S/L2 of the CIMR-

J7AZB_.

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

Example of 3-wire Sequence Connections

Stop switch (NC)

RUN switch (NO)

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

Multi-function contact output

Common

Analog monitor output

Analog monitor output common

Direction switch

Note Set parameter n37 for 3-wire sequence input.

Stop input (Stops with the stop switch opened.)

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

Sequence input common

Wiring Chapter 2-2

2-2-4 Wiring around the Main Circuit

Wire Size, Terminal Screw, Screw Tightening Torque, and Molded-case Circuit Breaker Capacities

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

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

3-phase 200-V AC Model

Model

CIMR-J7AZ-

20P1 R/L1, S/L2, T/L3, –, +1, +2,

Terminal symbol Terminal

U/T1, V/T2, W/T3

Screw

screw

M3.5 0.8 to 1.0 0.75 to 2 2 5

tightening

torque

(N•m)

Wire size

(mm

)

Re-

commended

wire size

(mm2)

Molded-

case circuit

breaker

capacity (A)

20P2 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

20P4 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

20P7 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

21P5 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

22P2 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

24P0 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 5

M3.5 0.8 to 1.0 0.75 to 2 2 10

M3.5 0.8 to 1.0 2 to 5.5 2 20

M3.5 0.8 to 1.0 2 to 5.5 3.5 20

M4 1.2 to 1.5 2 to 5.5 5.5 30

Wiring Chapter 2-2

Single-phase 200-V AC Model

Model

CIMR-J7AZ-

B0P1 R/L1, S/L2, T/L3, –, +1, +2,

Terminal symbol Terminal

U/T1, V/T2, W/T3

Terminal

screw

M3.5 0.8 to 1.0 0.75 to 2 2 5

torque

(N•m)

Wire size

(mm

)

Re-

commended

wire size

(mm2)

Circuit

breaker

capacity

(A)

B0P2 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

B0P4 R/L1, S/L2, T/L3, –, +1, +2,

B0P7 R/L1, S/L2, T/L3, –, +1, +2,

B1P5 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

3-phase 400-V AC Model

Model

CIMR-J7AZ-

40P2 R/L1, S/L2, T/L3, –, +1, +2,

Terminal symbol Terminal

U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 0.75 to 2 2 5

M3.5 0.8 to 1.0 0.75 to 2 2 10

M3.5 0.8 to 1.0 2 to 5.5 3.5 20

M3.5 0.8 to 1.0 2 to 5.5 5.5 20

Terminal

screw

M3.5 0.8 to 1.0 2 to 5.5 2 5

torque

(N•m)

Wire size

(mm

)

Re-

commended

wire size

(mm2)

Circuit

breaker

capacity

(A)

40P4 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

40P7 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

41P5 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

42P2 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

44P0 R/L1, S/L2, T/L3, –, +1, +2,

U/T1, V/T2, W/T3

M3.5 0.8 to 1.0 2 to 5.5 2 5

M3.5 0.8 to 1.0 2 to 5.5 2 10

M4 1.2 to 5.5 2 to 5.5 2 10

M4 1.2 to 1.5 2 to 5.5 2 20

3.5

Wiring Chapter 2-2

Wiring on the Input Side of the Main Circuit

Installing a Molded-case Circuit Breaker

Power supply

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

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

• Install one MCCB for every Inverter used.

• Choose an appropriate MCCB capacity according to the Circuit breaker capacity column in the table on the previous page.

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

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

Inverter

MCCB

R/L1

S/L2

T/L3

OFF ON

Fault output (NC)

Installing a Ground Fault Interrupter

Installing a Magnetic Contactor

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

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

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

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

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

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

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

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

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

Wiring Chapter 2-2

Connecting Input Power Supply to the Terminal Block

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

Installing an AC Reactor If the Inverter is connected to a large-capacity power transformer (660 kW or

more) or the phase advance capacitor is switched, an excessive peak current may flow through the input power circuit, causing the converter unit to break down.

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

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

Installing a Surge Absorber

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

Installing a Noise Filter on the Power Supply Side

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

Wiring Example 1

Input Noise Filters

EMC-conforming Input Noise Filter: 3G3JV-PFI_

Power supply

MCCB

Noise Filter

MCCB

CIMR-J7AZ

VARISPEED

Programmable Controller

Note Use a Noise Filter designed for the Inverter. A general-purpose Noise Filter

will be less effective and may not reduce noise.

Wiring Chapter 2-2

Wiring on the Output Side of the Main Circuit

Connecting the Terminal Block to the Load

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

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

Never Connect a Power Supply to Output Terminals

Never Short or Ground Output Terminals

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

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

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

Also, be careful not to short the output wires.

Do not Use a Phase Advancing Capacitor or Noise Filter

Do not Use an Electromagnetic Switch of Magnetic Contactor

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.

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

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

Installing a Thermal Relay The Inverter has an electronic thermal protection function to protect the motor

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

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

Installing a Noise Filter on the Output Side

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

Power supply

MCCB

Signal line

CIMR-J7AZ

VARISPEED

Noise Filter

Induction noise Radio noise

Controller AM radio

Induction 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.

Wiring Chapter 2-2

Countermeasures against Induction Noise

Power supply

Countermeasures against Radio Interference

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

MCCB

CIMR-J7AZ

VARISPEED

Signal line

Metal pipe

30 cm min.

Controller

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

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

Steel box

Power supply

Cable Length between Inverter and Motor

MCCB

Noise Filter

CIMR-J7AZ

VARISPEED

Noise Filter

Metal pipe

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

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

Cable length 50 m or less 100 m or less More than 100 m

Carrier frequency 10 kHz max. 5 kHz max. 2.5 kHz

Note Single-phase motors cannot be used.

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

Wiring Chapter 2-2

Ground Wiring

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

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

• Always use a ground wire that complies with technical standards on electrical equipment and minimize the length of the ground wire. Leakage current flows through the Inverter. Therefore, if the distance between the ground electrode and the ground terminal is too long, the potential on the ground terminal of the Inverter will become unstable.

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

Wiring Chapter 2-2

Harmonics

■ Definiton

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

The following frequencies are harmonics of a 60- or 50-Hz commercial power supply.

Second harmonic: 120 (100) Hz

Third harmonic: 180 (150) Hz

Second harmonic (120 Hz)

Basic frequency (60 Hz)

Third harmonic (180 Hz)

■ Problems Caused by Harmonics Generation

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

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

Distorted current wave form

Wiring Chapter 2-2

Causes of Harmonics Generation

Usually, electric machines have built-in circuitry that converts commercial AC power supply into DC power.

Such AC power, however, contains harmonics due to the difference in current flow between DC and AC.

Obtaining DC from AC Using Rectifiers and Capacitors

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

Inverter

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

Voltage

Time

Rectified

Voltage

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

Time

Smoothed

Voltage

Time

Current

Time

Wiring Chapter 2-2

Countermeasures with Reactors against Harmonics Generation

DC/AC Reactors

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

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

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

Connection

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

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

Wiring Method With DC Reactor

Power supply

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

MCCB

DC reactor (optional)

VARISPEED CIMR-J7AZ

With DC and AC Reactors

DC reactor (optional)

Power supply

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

MCCB

AC reactor (optional)

VARISPEED CIMR-J7AZ

Reactor Effects Harmonics are effectively suppressed when the DC reactor is used with the

AC reactor as shown in the following table.

Harmonics

suppression method

No reactor 65 41 8.5 7.7 4.3 3.1 2.6 1.8

AC reactor 38 14.5 7.4 3.4 3.2 1.9 1.7 1.3

DC reactor 30 13 8.4 5 4.7 3.2 3.0 2.2

DC and AC reactors 28 9.1 7.2 4.1 3.2 2.4 1.6 1.4

5th

harmonic

7th

harmonic

Harmonic generation rate (%)

11th

harmonic

13th

harmonic

17th

harmonic

19th

harmonic

23rd

harmonic

25th

harmonic

Wiring Chapter 2-2

2-2-5 Wiring Control Circuit Terminals

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

Wiring of Control I/O Terminals

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

Wires and Tightening Torque

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

Terminal

screw size

M3 0.5 to 0.6 Single wire 0.5 to 1.25

Tightening

torque N•m

Wire Wire size Recommended

0.75 (18) Cable with

(20 to 16)

Standard wire

0.5 to 1.25 (20 to 16)

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

Terminal

screw size

M2 0.22 to 0.25 Single wire 0.5 to 1.25

Tightening

torque N•m

Wire Wire size Recommended

0.75 (18) Cable with

(20 to 16)

Standard wire

0.5 to 0.75 (20 to 18)

Frequency Reference Input (FR, FS, and FC)

Terminal

screw size

M2 0.22 to 0.25 Single wire 0.5 to 1.25

Tightening

torque N•m

Wire Wire size Recommended

0.75 (18) Special

(20 to 16)

Standard wire

0.5 to 0.75 (20 to 18)

Cable

wire size

polyethylene sheath

Cable

wire size

polyethylene sheath

Cable

wire size

cable with polyethylene sheath and shield for measurement use

Solderless Terminal Size The use of solderless terminals for the control circuit terminals is

recommended for the reliability and ease of connection.

Note Make sure that the wire size is 0.5 mm

when using the following solderless

terminal.

1.0 dia.

2.6 dia.

Model: Phoenix Contact's A1 0.5-8 WH

(Size: mm)

Wiring Chapter 2-2

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

2. Insert the wires from underneath the terminal block.

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

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

other power cables.

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

3. The end of each wire connected to the control circuit terminals must be stripped for approximately 5.5 mm.

4. Connect the shield wire to the ground terminal of the CIMR-J7AZ. Do not connect the shield wire to the device side being controlled.

5. Be sure to insulate the shield wire with tape so that the shield wire will not come into contact with other signal wires or equipment.

Thin-slotted screwdriver

Terminal block

Strip the end for approximately

5.5 mm if no solderless terminal is used.

Wire

Solderless terminal or wire without soldering.

Applying excessive torque may damage

Note

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

Wiring Chapter 2-2

2-2-6 Conforming to EC Directive

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

Standard Connection

Main Circuit Terminals

MCCBs

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

Control Circuit Terminals

Forward/Stop

Multi-function input 1 (S2)

Multi-function input 2 (S3)

Multi-function input 3 (S4)

Multi-function input 4 (S5)

Sequence input common

Frequency reference power supply at +12 V

FREQ adjuster

Frequency reference input

Frequency reference common

Noise Filter

Clamp core

Multi-function contact output

Common

Analog-monitor output

Analog-monitor output common

(2kΩ, 1/4 W min.)

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

Wiring Chapter 2-2

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

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

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

• Locate the Noise Filter as close as possible to the Inverter. Make sure that the cable length between the Noise Filter and the Inverter does not exceed 40 cm.

• The following Noise Filters are available.

3-phase 200-V AC Noise Filter

Inverter 3-phase 200-V AC Noise Filter

Model CIMR-J7AZ- Schaffner model Rasmi model Rated current (A)

20P1/20P2/20P4/20P7 3G3JV-PFI2010-SE 3G3JV-PFI2010-E 10

21P5/22P2 3G3JV-PFI2020-SE 3G3JV-PFI2020-E 16

24P0 --- 3G3JV-PFI2030-E 26

Single-phase 200-V AC Noise Filter

Inverter Single-phase 200-V Noise Filter

Model 3G3JV- Schaffner model Rasmi model Rated current (A)

B0P1/B0P2/B0P4 3G3JV-PFI1010-SE 3G3JV-PFI1010-E 10

B0P7/B1P5 3G3JV-PFI1020-SE 3G3JV-PFI1020-E 20

3-phase 400-V AC Noise Filter

Inverter Single-phase 200-V Noise Filter

Model CIMR-J7AZ- Schaffner model Rasmi model Rated current (A)

Schaffner model Rasmi model

40P2/40P4 3G3JV-PFI3005-SE 3G3JV-PFI3005-E 5

40P7/41P5/44P0 3G3JV-PFI3010-SE 3G3JV-PFI3010-E 10

A44P0 3G3JV-PFI3020-SE 3G3JV-PFI3020-E 20 15

Connecting a Motor to the Inverter

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

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

Product Model Manufacturer

Clamp Filter 2CAT3035-1330 TDK

Wiring a Control Cable • Be sure to connect a cable with a braided shield to the control circuit

terminals.

• Ground the shield on the Inverter side only.

Wiring Chapter 2-2

Grounding the Shield In order to ground the shield securely, it is recommended that a cable clamp

be directly connected to the ground plate as shown below.

LVD Conformance

Ground plate

Shield

Cable clamp

Cable

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

• Use one MCCB per Inverter.

• Select a suitable MCCB from the following table.

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

300V Models

Inverter MCCB (Mitsubishi Electric)

Model CIMR-J7AZ- Type Rated current (A)

20P1 NF30 5

20P2 5

20P4 5

20P7 10

21P5 20

22P2 20

24P0 30

B0P1 NF30 5

B0P2 5

B0P4 10

B0P7 20

B1P5 20

Wiring Chapter 2-2

400-V Models

Inverter MCCB (Mitsubishi Electric)

Model CIMR-J7AZ- Type Rated current (A)

40P2 NF30 5

40P4 5

40P7 5

41P5 10

42P2 10

44P0 20

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

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

CHAPTER 3

Preparing for Operation and Monitoring

3-1 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3-2 Outline of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Nomenclature Chapter 3-1

3-1 Nomenclature

Indicators

Data display

Setting/Monitor item indicators

Keys

Appearance Name Function

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

and parameter set values.

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

frequency.

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

FOUT indicator The output frequency of the Inverter can be monitored while this indicator is lit.

IOUT indicator The output current of the Inverter can be monitored while this indicator is lit.

MNTR indicator The values set in U01 through U10 are monitored while this indicator is lit.

F/R indicator The direction of rotation can be selected while this indicator is lit, when

operating the Inverter with the RUN Key.

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

parameters set is selectable while this indicator is lit. Note Note This status of this indicator can be only monitored while the

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

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

indicator is lit. Note While the Inverter is in operation, the parameters can be only monitored

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

Mode Key Switches the setting and monitor item indicators in sequence.

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

Increment Key Increases multi-function monitor numbers, parameter numbers, and

parameter set values.

FREQ adjuster

Decrement Key Decreases multi-function monitor numbers, parameter numbers, and

parameter set values.

Enter Key Enters multi-function monitor numbers, parameter numbers, and internal data

values after they are set or changed.

RUN Key Starts the Inverter running when the CIMR-J7AZ is in operation with the

Digital Operator.

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

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

Note For safety’s reasons, the reset will not work while a RUN command (forward

or reverse) is in effect. Wait until the RUN command is OFF before resetting the Inverter.

Outline of Operation Chapter 3-2

3-2 Outline of Operation

Selecting Indicators

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

Power ON

FREF (Frequency Reference)

Monitors and sets the frequency reference.

FOUT (Output Frequency)

Monitors the output frequency. Note This indicator will be lit by turning the Inverter on again if the Inverter is turned off while this indicator is lit.

IOUT (Output Current)

Monitors the output current. Note This indicator will be lit by turning the Inverter on again if the Inverter is turned off while this indicator is lit.

MNTR (Multi-function Monitor)

Monitors the values set in U01 through U10.

F/R (Forward/Reverse Rotation)

Selects the direction of rotation.

LO/RE (Local/Remote)

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

PRGM (Parameter Setting)

Monitors or sets the values in n01 through n79.

The FREF indicator is lit again.

Outline of Operation Chapter 3-2

Example of Frequency Reference Settings

Key sequence Indicator Explanation

Display

example

Power ON Note If the FREF indicator has not been lit, press the Mode Key repeatedly unit the FREF indicator is lit.

Use the Increment or Decrement Key to set the frequency reference. The data display will flash while the frequency reference is set. (see note 1) Press the Enter Key so that the set value will be entered and the data display will be lit. (see note 1)

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

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

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

• Parameter n03 for frequency reference selection is set to 1 (i.e., frequency reference 1 is enabled) and the Inverter is in remote mode.

• Parameter n07 for frequency selection in local mode is set to 1 (i.e., the Digital Operator is enabled) and the Inverter is in local mode.

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

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

Example of Multi-function Display

Key sequence Indicator Display Explanation

Power ON

Press the Mode Key repeatedly until the MNTR indicator is lit. U01 will be displayed.

Use the Increment or Decrement Key to select the monitor item to be displayed.

Press the Enter Key so that the data of the selected monitor item will be displayed. The monitor number display will appear again by pressing the Mode Key.

Outline of Operation Chapter 3-2

Status Monitor

Item Display Display unit Function

U01 Frequency reference Hz Monitors the frequency reference. (Same as FREF)

U02 Output frequency Hz Monitors the output frequency. (Same as FOUT)

U03 Output current A Monitors the output current. (Same as IOUT)

U04 Output voltage V Monitors the internal output voltage reference value of the

Inverter.

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

Inverter.

U06 Input terminal status --- Shows the ON/OFF status of inputs.

: Input ON : No input

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

Not used

U07 Output terminal status --- Shows the ON/OFF status of outputs.

Terminal S4: Multi-function input 3 (S4) Terminal S5: Multi-function input 4 (S5)

: Closed : Open

Not used

U09 Error log

(most recent one)

U10 Software No. --- OMRON use only.

--- Displays the latest error.

Error

Terminal MA: Multi-function contact output

Outline of Operation Chapter 3-2

Example of Forward/Reverse Selection Settings

Key sequence Indicator Explanation

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

Display

example

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

The present setting will be displayed. For: Forward; rEv: Reverse

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

Example of Local/Remote Selection Settings

Key sequence Indicator Explanation

Display

example

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

The present setting will be displayed. rE: Remote; Lo: Local

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

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

operation. The present setting can be monitored when the Inverter is in operation.

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

3. Any RUN command input will be ignored while the LO/RE indicator is lit. To enable a RUN command, first turn the RUN command OFF and then press the Mode Key to display an item that has a green indicator (FREF to MNTR). Then input the RUN command again.

Outline of Operation Chapter 3-2

Example of Paramter Settings

Cancels set data.

In approximately 1 s.

Key sequence Indicator Explanation

In approximately 1 s.

Note 1. To cancel the set value, press the Mode Key instead. The parameter

2. There are parameters that cannot be changed while the Inverter is in

3. Any RUN command input will be ignored while the Parameter Setting

Display

example

Power ON

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

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

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

displayed. Use the Increment or Decrement Key to set the data. At that time the display will flash. Press the Enter Key so that the set value will be entered

and the data display will be lit. (see note 1) The parameter number will be displayed.

number will be displayed.

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

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

Outline of Operation Chapter 3-2

CHAPTER 4

4-1 Procedure for Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4-2 Operation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4-2-1 Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4-2-2 Check the Display Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4-2-3 Initializing Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4-2-4 Setting the Rated Motor Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4-2-5 No-load Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4-2-6 Actual Load Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Test Run

Chapter 4

WARNING

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

Do not remove the front cover, terminal covers, bottom cover, Operator, or optional items while the power is being supplied. Not doing so may result in electrical shock or damage to the product.

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

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

Do not come close to the machine when using the error retry function because the machine may abruptly start when stopped by an alarm. Doing so may result in injury.

Provide a separate emergency stop switch because the STOP Key on the Operator is valid only when function settings are performed. Not doing so may result in injury.

WARNING

Caution

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

Be sure to confirm permissible ranges of motors and machines before operation because the Inverter speed can be easily changed from low to high. Not doing so may result in damage to the product.

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

Do not perform a signal check during operation. Doing so may result in injury or damage to the product.

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

Procedure for Test Run Chapter 4-1

4-1 Procedure for Test Run

1. Installation and Mounting

Install the Inverter according to the installation conditions. Refer to page 6. Ensure that the installation conditions are met.

2. Wiring and Connection

Connect to the power supply and peripheral devices. Refer to page 10. Select peripheral devices which meet the specifications and wire correctly.

3. Power Connection

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

• Always ensure that a power supply to the correct voltage is used and that the power input terminals (R/L1, S/L2, and T/L3) are wired correctly. CIMR-J7AZ-2_: 3-phase 200 to 230 V AC CIMR-J7AZ-B_: Single-phase 200 to 240 V AC (Wire R/L1 and S/L2) CIMR-J7AZ-4_: 3-phase 380 to 460 V AC

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

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

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

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

4. Check the Display Status

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

• If the display at the time the power is connected is normal, it will read as follows: RUN indicator: Flashes ALARM indicator: Off Setting/Monitor indicators: FREF, FOUT, or IOUT is lit. Data display: Displays the corresponding data of the indicator that is lit.

• When a fault has occurred, the details of the fault will be displayed. In that case, refer to Chapter 8 Maintenance Operations and take necessary remedies.

5. Initializing Parameters

Initialize the parameters.

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

6. Setting Parameters

Set the parameters required for a test run.

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

7. No-load Operation

Start the no-load motor using the Digital Operator.

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

8. Actual Load Operation

Connect the mechanical system and operate using the Digital Operator.

• When ehere are no difficulties using the no-load operation, connect the mechanical system to the motor and operate using the Digital Operator.

Procedure for Test Run Chapter 4-1

9. Operation

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

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

• For operation within standard parameters, refer to Chapter 5 Basic Operation.

• Refer to Chapter 5 Basic Operation and Chapter 6 Advanced Operation for the various advanced functions, such as stall prevention, carrier frequently setting, overtorque detection, torque compensation, and slip compensation.

Operation Example Chapter 4-2

4-2 Operation Example

4-2-1 Power Connection

Checkpoints before Connecting the Power Supply

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

CIMR-J7AZ-2_: Three-phase 200 to 230 V AC CIMR-J7AZ-B_: Single-phase 200 to 240 V AC (Wire R/L1 and S/L2) CIMR-J7AZ-4_: 3-phase 380 to 460 V AC

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

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

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

Connecting the Power Supply

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

4-2-2 Check the Display Status

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

Normal

RUN indicator: Flashes

ALARM indicator: Off

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

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

• When a fault has occurred, the details of the fault will be displayed. In that case, refer to Chapter 8 Maintenance Operations and take necessary action.

Fault

RUN indicator: Flashes

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

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

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

Operation Example Chapter 4-2

4-2-3 Initializing Parameters

• Initialize the parameters using the following procedure.

• To initialize the parameters, set n01 to 8.

Key

sequence

In approximately 1 s.

Indicator Display

4-2-4 Setting the Rated Motor Current

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

Setting the Rated Motor Current

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

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

Explanation

example

Power ON

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

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

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

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

The parameter number will be displayed.

n32 Rated Motor Current Changes during

operation

Setting range

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

Unit of setting

0.1 A Default setting (see note 1)

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

rated motor current.

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

Key

sequence

In approximately 1 s.

Indicator Display

example

Explanation

Displays the parameter number.

Use the Increment or Decrement Key until n32 is displayed.

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

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

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

The parameter number will be displayed.

Operation Example Chapter 4-2

4-2-5 No-load Operation

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

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

MIN.

Forward/Reverse Rotation with the Digital Operator

Key

sequence

Indicator Display

example

Explanation

Press the Mode Key to turn on the FREF indicator. Monitors the frequency reference.

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

Turn the FREQ adjuster clockwise slowly. The monitored frequency reference will be displayed. The motor will start rotating in the forward direction according to the frequency reference.

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

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

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

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

Stopping the Motor

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

Operation Example Chapter 4-2

4-2-6 Actual Load Operation

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

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

MIN.

Connecting the System

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

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

Operation Using the Digital Operator

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

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

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

Checking the Operating Status

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

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

CHAPTER 5

Basic Operation

5-1 Initial Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5-2 V/f Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

5-3 Setting the Local/Remote Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5-4 Selecting the Operation Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5-5 Setting the Frequency Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

5-5-1 Selecting the Frequency Reference . . . . . . . . . . . . . . . . . . . . . . . . . . 55

5-5-2 Upper and Lower Frequency Reference Limits . . . . . . . . . . . . . . . . 56

5-5-3 Adjusting the Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

5-5-4 Setting Frequency References through Key Sequences . . . . . . . . . . 57

5-6 Setting the Acceleration/Deceleration Time . . . . . . . . . . . . . . . . . . . . . . . . . . 60

5-7 Selecting the Reverse Rotation-prohibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

5-8 Selecting the Interruption Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

5-9 Multi-function I/0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

5-9-1 Multi-function Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

5-9-2 Multi-function Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

5-10 Analog Monitor Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Initial Settings Chapter 5-1

This section explains the basic settings required to operate and stop the Inverter. The settings of parameters described here will be sufficient for simple Inverter operations. First, make these basic settings, then skip to the explanations of those special functions, even when your application requires special functions, such as stall prevention, carrier frequency setting, overtorque detection, torque compensation, slip compensation. Refer to Chapter 6 Advanced Operation.

5-1 Initial Settings

• The following initial settings are required.

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

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

Setting the Parameter Write-prohibit Selection/Parameter Initialization (n01)

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

n01 Parameter Write-prohibit Selection/

Setting range

0, 1, 6, 8, 9 Unit of

Parameter Initialization

setting

1 Default setting 1

Changes during

operation

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

parameter set or displayed range, or initialize all parameters to default values.

Set Value

Value Descri pti on

0 Only n01 can be displayed and set. The n02 through n79 parameters can be displayed only.

1 The n01 through n79 parameters can be displayed and set.

6 Only the error log memory is cleared.

8 Enables the initialization of all parameters in 2-wire sequence so that the parameters will return to default

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

values.

Setting the Rated Motor Current (n32)

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

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

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

n32 Rated Motor Current Changes during

Setting range

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

Unit of setting

0.1 A Default setting (see note 1)

operation

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

rated motor current.

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

V/f Control Chapter 5-2

5-2 V/f Control

Setting the V/f Patterns (n09 to n15)

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

• The J7AZ incorporates an automatic torque boost function. Therefore, a maximum of 150% torque can be output at 3 Hz without changing the default settings. Check the system in trial operation and leave the default settings as they are if no torque characteristic changes are required.

n09 Maximum Frequency (FMAX) Changes during

operation

Setting range

n10 Maximum Voltage (VMAX) Changes during

Setting range

n11 Maximum Voltage Frequency (FA) Changes during

Setting range

n12 Middle Output Frequency (FB) Changes during

Setting range

n13 Middle Output Frequency Voltage (VC) Changes during

Setting range

50.0 to 400 Hz Unit of setting

1 to 255 (V) (see note 2)

0.2 to 400 (Hz) Unit of

0.1 to 399 (Hz) Unit of

1 to 255 (V) (see note 2) Unit of

Unit of setting

setting

0.1 Hz (see note 1)

1 V Default setting 200

0.1 Hz (see note 1)

1 V Default setting 12

Default setting 60.0

operation

Default setting 60.0

operation

Default setting 1.5

operation

(see note 2)

n14 Minimum Output Frequency (FMIN) Changes during

operation

Setting range

n15 Minimum Output Frequency Voltage (VMIN) Changes during

Setting range

0.1 to 10.0 (Hz) Unit of setting

1 to 50 (V) (see note 2) Unit of

setting

0,1 Hz Default setting 1.5

operation

1 V Default setting 12

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

and 1-Hz increments if the frequency is 100 Hz or greater.

(see note 2)

V/f Control Chapter 5-2

2. With 400-V Inverters, the values for the upper limit of setting ranges and the default settings will be twice those given in the above table.

Output voltage (V)

n10(VMAX)

n13(VC)

n15(VMIN)

0 n14

(FMIN

n12

(FB)

n11

(FA)

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

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

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

Note 1. Set the parameters so that the following condition will be satisfied. n14 ≤ n12 < n11 ≤ n09

Note 2. The value set in n13 will be ignored if parameters n14 and n12 are the same in value.

Frequency (Hz)

n09

(FMA

Frequency (Hz)

Setting the Local/Remote Mode Chapter 5-3

5-3 Setting the Local/Remote Mode

The J7AZ operates in local or remote mode. The following description provides information on these modes and how to select them.

Basic Conecpt

Operation mode Basic concept Description

Remote The Inverter in a system operates

according to the control signal of the host controller.

Local The Inverter in a system operates

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

Local/Remote Selection Methods

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

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

• Set any one of multi-function inputs 1 through 4 (n36 through n39) to 17 to set the Inverter to local mode with control input turned ON.

RUN Command

Selectable from two types and set in n02.

Frequency Reference

Selectable from five types and set in n03.

RUN Command

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

Frequency Reference

Set with the Digital Operator or the FREQ adjuster. Set with frequency reference selection in local

mode in n07.

Note If the above setting is made, mode selection will be possible only with multi-

function input, and not with the Digital Operator.

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

Selecting the Operation Command Chapter 5-4

5-4 Selecting the Operation Command

The following description provides information on how to input operation commands to start or stop the Inverter or change the direction of rotation of the Inverter.

Three types of command input methods are available. Select either one of them according to the application.

Selecting the Operation Mode (n02)

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

• The following method is enabled in remote mode only. The command can be input through key sequences on the Digital Operator.

n02 Operation Command Selection Changes during

operation

Setting range

0 to 2 Unit of

setting

1 Default setting 0

Set Values

Value Descri pti on

0 The RUN and STOP/RESET Keys of the Digital Operator are enabled.

1 Multi-function input in 2- or 3-wire sequence through the control circuit terminals is enabled.

2 Operation commands via RS-422A/485 communications are enabled.

Selecting the STOP/RESET Key Function (n06)

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

n06 STOP Key Function Selection Changes during

operation

Setting range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Descri pti on

0 The STOP/RESET Key of the Digital Operator is enabled.

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

Operator is selected for operation command input.

Setting the Frequency Reference Chapter 5-5

5-5 Setting the Frequency Reference

5-5-1 Selecting the Frequency Reference

The following description provides information on how to set the frequency reference in the Inverter. Select the method according to the operation mode.

Remote mode: Select and set one out of six frequency references in n03.

Local mode: Select and set one out of two frequency references in n07.

Selecting the Frequency Reference (n03) in Remote Mode

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

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

n03 Frequency Reference Selection Changes during

operation

Setting range

0 to 4, 6 Unit of

setting

1 Default setting 0

Set Values

Value Descri pti on

0 The FREQ adjuster of the Digital Operator is enabled. (see note 1)

1 Frequency reference 1 (n21) is enabled.

2 The frequency reference control terminal (for 0- to 10-V input) is enabled. (see note 2)

3 The frequency reference control terminal (for 4- to 20-mA current input) is enabled. (see note 3)

4 The frequency reference control terminal (for 0- to 20-mA current input) is enabled. (see note 3)

6 The frequency reference via RS-422A/485 communications is enabled.

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

MAX.

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

3. The maximum frequency (FMAX) is set with 20 mA input, provided that SW8 on the control PCB is switched from V to I.

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

Selecting the Frequency Reference (n07) in Local Mode

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

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

n07 Frequency Reference Selection in Local Mode Changes during

operation

Setting range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Description

0 The FREQ adjuster of the Digital Operator is enabled. (see note 1)

1 Key sequences on the Digital Operator are enabled. (see note 2)

Setting the Frequency Reference Chapter 5-5

5-5-2 Upper and Lower Frequency Reference Limits

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

Setting the Frequency Reference Upper and Lower Limits (n30 and n31)

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

n30 Frequency Reference Upper Limit Changes during

Setting range

n31 Frequency Reference Lower Limit Changes during

Setting range

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

Unit of setting

1% Default setting 100

1% Default setting 0

operation

Note If n31 is set to a value less than the minimum output frequency (FMIN), the

Inverter will have no output when a frequency reference less than the minimum output frequency input is ON.

5-5-3 Adjusting the Analog Input

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

FR Terminal Adjustments for Frequency Reference Input

Gain and Bias Settings (n41 and n42)

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

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

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

n41 Frequency Reference Gain Changes during

operation

Setting range

n42 Frequency Reference Bias Changes during

Setting range

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

-99% to 99% (Max. frequency = 100%)

Unit of setting

1% Default setting 100

operation

1% Default setting 0

• Analog Frequency Reference Filter Time (n43)

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

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

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

n43 Analog Frequency Reference Filter Time Changes during

operation

Setting range

0.00 to 2.00 (s) Unit of setting

0.01 s Default setting 0.10

Yes

Setting the Frequency Reference Chapter 5-5

5-5-4 Setting Frequency References through Key Sequences

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

Setting Frequency References 1 through 8 and the Inching Frequency Command (n21 through n28 and n29)

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

Setting Frequency References 1 through 8 (n21 through n28)

n21 Frequency Reference 1 Changes during

operation

Setting range

0.0 to max. frequency Unit of setting

0.01 Hz (see note 1)

Default setting 6.0

Yes

n22 Frequency Reference 2 Changes during

operation

Setting range

n23 Frequency Reference 3 Changes during

Setting range

n24 Frequency Reference 4 Changes during

Setting range

n25 Frequency Reference 5 Changes during

Setting range

n26 Frequency Reference 6 Changes during

Setting range

0.0 to max. frequency Unit of setting

0.01 Hz (see note 1)

Default setting 0.0

operation

Default setting 0.0

operation

Default setting 0.0

operation

Default setting 0.0

operation

Default setting 0.0

Yes

n27 Frequency Reference 7 Changes during

operation

Setting range

n28 Frequency Reference 8 Changes during

Setting range

0.0 to max. frequency Unit of setting

0.01 Hz (see note 1)

Default setting 0.0

operation

Default setting 0.0

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

and 1-Hz increments if the frequency is 100 Hz or over.

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

3. Frequency references 2 through 8 are enabled by setting multi-step speed references 1, 2, and 3 in n36 through n39 for multi-function input. Refer to the following table for the relationship between multi-step speed references 1 through 3 and frequency references 1 through 8.

Yes

Setting the Frequency Reference Chapter 5-5

Frequency reference Multi-step speed

reference 1

(Set value: 6)

Frequency reference 1 OFF OFF OFF

Frequency reference 2 ON OFF OFF

Frequency reference 3 OFF ON OFF

Frequency reference 4 ON ON OFF

Frequency reference 5 OFF OFF ON

Frequency reference 6 ON OFF ON

Frequency reference 7 OFF ON ON

Frequency reference 8 ON ON ON

Multi-step speed

reference 2

(Set value: 7)

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

Setting the Inching Frequency Command (n29)

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

n29 Inching Frequency Command Changes during

operation

Setting range

0.0 to max. frequency Unit of setting

0.01 Hz (see note 1)

Default setting 6.0

Multi-step speed

reference 3

(Set value: 8)

Yes

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

Hz and 1-Hz increments if the frequency is 100 Hz or over.

2. In order to use the inching frequency command, one of the n36 through n39 parameters for multi-function input must be set to 10 as an inching frequency command. Parameter n29 is selectable by turning on the multifunction input set with the inching frequency command. The inching frequency command takes precedence over the multi-step speed reference (i.e., when the inching frequency command is ON, all multi-step speed reference input will be ignored).

Setting the Frequency Reference Chapter 5-5

Setting the Frequency Reference with the FREF Indicator Lit

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

• Parameter n03 for frequency reference selection is set to 1, which enables frequency reference 1, and the Inverter is in remote mode.

• Parameter n07 for frequency selection in local mode is set to 1, which enables key sequences on the Digital Operator, and the Inverter is in local mode.

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

The frequency reference can be changed, even during operation.

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

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

Key

sequence

Setting the Key Sequential Frequency (n08)

Indicator Display

example

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

Use the Increment or Decrement Key to set the frequency reference. The data display will flash while the frequency reference is set.

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

• The Enter Key need not be pressed when changing the setting in n08. In that case, the frequency reference will change when the set value is

Explanation

repeatedly until the FREF indicator is lit.

changed with the Increment or Decrement Key while the data display is continuously lit.

n08 Key Sequential Frequency Setting Changes during

operation

Setting range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Description

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

1 Enter Key disabled (The set value set is entered immediately.)

Setting the Acceleration/Deceleration Time Chapter 5-6

5-6 Setting the Acceleration/Deceleration Time

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

Setting the Acceleration/Deceleration Time (n16 through n19)

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

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

Acceleration/Deceleration time = (Acceleration/Deceleration time set value) × (Frequency reference value) ÷ (Max. frequency)

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

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

n16 Acceleration time 1 Changes during

operation

Setting range

n17 Deceleration Time 1 Changes during

Setting range

n18 Acceleration Time 2 Changes during

Setting range

n19 Deceleration Time 2 Changes during

Unit of setting

0.0 to 999 (s) Unit of setting

0.1 s (see note)

Default setting 10.0

operation

Default setting 10.0

operation

Default setting 10.0

operation

Default setting 10.0

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

and 1-Hz increments if the frequency is 100 Hz or over.

Yes

Setting the Acceleration/Deceleration Time Chapter 5-6

S-shape Acceleration/Deceleration Characteristic (n20)

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

• Any one of three S-shape acceleration/deceleration times (0.2, 0.5, and

1.0 s) is selectable.

n20 S-shape Acceleration/Deceleration Characteristic Changes during

Setting range

0 to 3 Unit of

setting

1 Default setting 0

operation

Set Values

Value Description

0 No S-shape acceleration/deceleration characteristic (Trapezoidal acceleration/deceleration)

1 S-shape acceleration/deceleration characteristic time is 0.2 s

2 S-shape acceleration/deceleration characteristic time is 0.5 s

3 S-shape acceleration/deceleration characteristic time is 1.0 s

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

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

Selecting the Reverse Rotation-prohibit Chapter 5-7

5-7 Selecting the Reverse Rotation-prohibit

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

Selecting the Reverse Rotation-prohibit (n05)

n05 Reverse Rotation-prohibit Selection Changes during

Setting range

0, 1 Unit of

setting

1 Default setting 0

operation

Set Values

Value Description

0 Accept

1 Not accept

5-8 Selecting the Interruption Mode

This parameter is used to specify the interruption mode when the STOP command is input.

The Inverter either decelerates or coasts to a stop according to the interruption mode selection.

Selecting the Interruption Mode (n04)

n04 Interruption Mode Selection Changes during

Setting range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Description

0 Frequency deceleration stop (See notes 1 and 2.)

1 Free running (See note 3.)

operation

Note 1. The Inverter will decelerate to stop according to the setting in n17 for

deceleration time 1 if any of the n36 through n39 parameters for multifunction input is not set to 11 for acceleration/deceleration time selection. If any one of the n36 through n39 multi-function input parameters is set to acceleration/deceleration time selection, the Inverter will decelerate to stop according to the selected setting of deceleration time when the STOP command is input.

2. If the RUN signal is input again during a deceleration stop, deceleration will be stopped at the point of the input and acceleration will proceed at that frequency.

3. Do not input a RUN signal during a free-running stop if the motor’s rotation speed is not sufficient slowed. If a RUN signal is input under these conditions, a main circuit overvoltage (OV) or overcurrent (OC) will be detected. To restart a free-running motor, set a speed search command in one of the multi-function inputs 1 to 4 (n36 to n39), use the speed search to detect the speed of the free running motor, and then accelerate smoothly.

Multi-function I/0 Chapter 5-9

5-9 Multi-function I/0

5-9-1 Multi-function Input

The J7AZ incorporates four multi-function input terminals (S2 through S5). Inputs into these terminals have a variety of functions according to the application.

Multi-function Input (n36 through n39)

n36 Multi-function Input 1 (S2) Changes during

operation

Setting range

n37 Multi-function Input 2 (S3) Changes during

Setting range

n38 Multi-function Input 3 (S4) Changes during

Setting range

n39 Multi-function Input 4 (S5) Changes during

Setting range

2 to 8, 10 to 22 (see note)

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

2 to 8, 10 to 22 (see note)

2 to 8, 10 to 22, 34, 35 (see note)

Unit of setting

1 Default setting 2

operation

1 Default setting 5

operation

1 Default setting 3

operation

1 Default setting 6

Note Do not set values outside the above setting ranges.

Multi-function I/0 Chapter 5-9

Set Values

Value Function Description

0 Forward/Reverse rotation

command

2 Reverse/Stop Reverse rotation command (2-wire sequence) 3 External fault (NO) ON: External fault (FP_detection: _is a terminal number) 4 External fault (NC) OFF: External fault (EF_detection: _is a terminal number)

5 Fault reset ON: Fault reset (disabled while RUN command is input)

6 Multi-step speed

reference 1

7 Multi-step speed reference 2

8 Multi-step speed reference 3

10 Inching frequency command ON: Inching frequency command (taking precedence over the multi-step

11 Acceleration/Deceleration

time selection

12 External base block

command (NO)

13 External base block

command (NC)

14 Search command (Searching

starts from maximum frequency)

15 Search command

(Searching starts from preset frequency)

16 Acceleration/Deceleration-

prohibit command

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

3-wire sequence (to be set in n37 only) By setting n37 to 0, the set value in n36 is ignored and the following setting are forcibly made.

S1: RUN input (RUN when ON) S2: STOP input (STOP when OFF) S3: Forward/Reverse rotation command

(OFF: Forward; ON: Reverse)

Signals to select frequency references 2 through 8.

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

Sequences for the relationship between multi-step speed references

and frequency references.

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

input.

speed reference)

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

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

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

ON: Speed search (Searching starts from n09)

ON: Speed search

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

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

not possible.

18 Communications or remote

selection

19 Emergency stop fault (NO) The Inverter stops according to the setting in n04 for interruption mode

20 Emergency stop alarm (NO)

21 Emergency stop fault (NC)

22 Emergency stop alarm (NC)

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

35 Self-diagnostic test ON: RS-422A/485 communications self-diagnostic test (set in n39 only)

ON: RS-422A/485 communications input is enabled. OFF: The settings of n02 and n03 are enabled.

selection with the emergency stop input turned ON. n04 set to 0: Decelerates to stop at deceleration time 2 set in n19. n04 set to 1: Coasts to a stop.

Note NO: Emergency stop with the contact closed

NC: Emergency stop with the contact opened.

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

Alarm output is ON (no reset required).

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

ON)

By setting n39 to 34, the set value in n38 is ignored and the following settings are forcibly made.

S4: Up command S5: Down command Note It is impossible to set the up or down command and multi-step speed

references 1 through 3 together.

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

UP/DOWN Command Frequency Memory (n62).

Multi-function I/0 Chapter 5-9

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

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

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

Forward-rotation switch

Reverse-rotation switch

Forward/Stop (Forward rotation with the forward-rotation switch

closed and reverse-rotation switch opened)

Reverse/Stop (Reverse rotation with the reverse-rotation switch

closed and forward-rotation switch opened) _: 2 to 5

Sequence input common

Operation in 3-wire Sequence (n37 = 0)

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

• Only n37 can be set to 0 (3-wire sequence). By making this setting, the set value in n36 is ignored and the following settings are forcibly made. S1: RUN input (RUN when ON) S2: STOP input (STOP when OFF) S3: Forward/Reverse rotation command (OFF: Forward; ON: Reverse)

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

Stop switch (NC)

Operation switch (NO)

Direction switch

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

STOP input (with the STOP switch opened)

Foward/Reverse rotation command (Forward rotation with the direction

switch opened and reverse rotation with the direction switch closed

Sequence input common

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

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

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

• For stopping Inverter outputs before disconnecting motor wiring when changing the motor connections from the Inverter to a commercial power supply.

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

the Inverter’s internal frequency continues to be calculated as usual. Therefore, if the external base block is clearedwhen the frequency is other than zero, the frequency calculated at that point will be output. Because of this, if the baseblock is cleared during deceleration while the motor is free running, a large discrepancy between the motor speed at that moment and the Inverter output frequency may result in a main circuit overvoltage (OV) or overcurrent (OC).

Multi-function I/0 Chapter 5-9

Speed Search (Set Value: 14, 15)

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

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

Forward (reverse)

RUN command

Speed Search command

Output frequency

High-speed frequency or set frequency (frequency reference)

Minimum base block time (0.5 s)

0.5 s min.

Speed search operation

Time

Multi-function I/0 Chapter 5-9

5-9-2 Multi-function Output

The J7AZ incorporates two multi-function output terminals (MA and MB). Output from these terminals has a variety of functions according to the application.

Selecting the Multi-function Output (n40)

n40 Multi-function Output (MA/MB and MC) Changes during

Setting range

0 to 7, 10 to 17 (see note)

Unit of setting

1 Default setting 1

operation

Note Do not set values outside the above setting ranges.

Set Values

Value Function Description

0 Fault output ON: Fault output (with protective function working)

1 Operation in progress ON: Operation in progress (with RUN command input or inverter output)

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

frequency)

3 Idling ON: Idling (at less than min. output frequency)

4 Frequency detection 1 ON: Output frequency ≥ frequency detection level (n58)

5 Frequency detection 2 ON: Output frequency ≤frequency detection level (n58)

6 Overtorque being monitored

(NO-contact output)

7 Overtorque being monitored

(NC-contact output)

10 Alarm output ON: Alarm being detected (Nonfatal error being detected)

11 Base block in progress ON: Base block in progress (in operation with output shutoff)

12 RUN mode ON: Local mode (with the Digital Operator)

13 Inverter ready ON: Inverter ready to operate (with no fault detected)

14 Fault retry ON: Fault retry (Inverter resetting with fault retry (n48) not set to 0)

15 UV in progress ON: Undervoltage being monitored

16 Rotating in reverse direction ON: Rotating in reverse direction

17 Speed search in progress ON: Speed search in progress

Output if any of the following parameter conditions is satisfied.

• Overtorque detection function selection (n59)

• Overtorque detection level (n60)Overtorque detection level (n60)

• Overtorque detection time (n61) Note NO contact: ON with overtorque being detected;

NC contact: OFF with overtorque being detected

(main circuit undervoltage UV or UV1 detected)

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

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

Analog Monitor Output Chapter 5-10

5-10 Analog Monitor Output

The J7AZ incorporates analog monitor output terminals AM and AC. These terminals have analog monitor values of output frequency or current.

Setting the Analog Monitor Output (n44 and n45)

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

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

n44 Analog Monitor Output Changes during

operation

Setting range

0, 1 Unit of

setting

1 Default setting 0

Set Value

Value Descri pti on

0 Output frequency (Reference: 10 V at max. frequency)

1 Output current (Reference: 10 V with rated output current)

n45 Analog Monitor Output Gain Changes during

operation

Setting range

0.00 to 2.00 Unit of setting

0.01 Default setting 1.00

Yes

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

For example, if an output of 5 V is desired at maximum frequency (with n44 set to 0), set n45 to 0.50.

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

CHAPTER 6

Advanced Operation

6-1 Setting the Carrier Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

6-2 DC Injection Braking Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

6-3 Stall Prevention Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

6-4 Overtorque Detection Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

6-5 Torque Compensation Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

6-6 Slip Compensation Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

6-7 Other Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

6-7-1 Motor Protection Characteristics (n33 and n34) . . . . . . . . . . . . . . . . 79

6-7-2 Cooling Fan Operation Function (n35) . . . . . . . . . . . . . . . . . . . . . . . 80

6-7-3 Momentary Power Interruption Compensation (n47) . . . . . . . . . . . . 80

6-7-4 Fault Retry (n48) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

6-7-5 Frequency Jump Function (n49 to n51) . . . . . . . . . . . . . . . . . . . . . . 82

6-7-6 Frequency Detection Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

6-7-7 UP/DOWN Command Frequency Memory (n62) . . . . . . . . . . . . . . 85

6-7-8 Error History (n78) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Setting the Carrier Frequency Chapter 6-1

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

6-1 Setting the Carrier Frequency

The carrier frequency of the J7AZ can be fixed or varied in proportion to the output frequency.

n46 Carrier Frequency Selection Changes during

operation

Setting range

1 to 4, 7 to 9 Unit of

setting

1 Default setting (see note)

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

Set Values

Value Descri pti on

1 2.5 kHz

2 5.0 kHz

3 7.5 kHz

4 10.0 kHz

7 2.5 kHz (12×): 12 times as high as output frequency (between 1.0 and 2.5 kHz)

8 2.5 kHz (24×): 24 times as high as output frequency (between 1.0 and 2.5 kHz)

9 2.5 kHz (36×): 36 times as high as output frequency (between 1.0 and 2.5 kHz)

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

• Change the default setting in the following cases.

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

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

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

Note The carrier frequency changes as shown in the following graph with 7 through

9 set in n46.

Carrier Frequency (n46: 7 through 9)

Carrier Frequency

2.5kHz

1.0kHz

83.3 Hz (Set value: 7)

41.6 Hz (Set value: 8)

27.7 Hz (Set value: 9)

Output frequency

208.3 Hz (Set value: 7)

104.1 Hz (Set value: 8)

69.4 Hz (Set value: 9)

Setting the Carrier Frequency Chapter 6-1

The Inverter cannot maintain rated output current with the carrier frequency set to a value higher than the default one.

The following table shows the default value and a decrease in the output current of each Inverter model.

Be sure to use the Inverter so that there will be no decrease in rated output current.

Voltage Model

CIMR-J7AZ-

3-phase 200 V

Single-phase 200 V

3-phase 400 V 40P2 3 (7.5 kHz) 1.2 Q 1.0

n75 Low Carrier Frequency at Low Speed Changes during

Setting range

20P1 4 (10 kHz) 0.8 QQ 20P2 4 (10 kHz) 1.6 QQ 20P4 4 (10 kHz) 3.0 QQ 20P7 4 (10 kHz) 5.0 QQ 21P5 3 (7.5 kHz) 8.0 Q 7.0 22P2 3 (7.5 kHz) 11.0 Q 10.0 24P0 3 (7.5 kHz) 17.5 Q 16.5 B0P1 4 (10 kHz) 0.8 QQ B0P2 4 (10 kHz) 1.6 QQ B0P4 4 (10 kHz) 3.0 QQ B0P7 4 (10 kHz) 5.0 QQ B1P5 3 (7.5 kHz) 8.0 Q 7.0

40P4 3 (7.5 kHz) 1.8 Q 1.6 40P7 3 (7.5 kHz) 3.4 Q 3.0 41P5 3 (7.5 kHz) 4.8 Q 4.0 42P2 3 (7.5 kHz) 5.5 Q 4.8 44P0 3 (7.5 kHz) 8.6 Q 7.6

0, 1 Unit of

Default setting Rated output

current (A)

1 Default setting 0

setting

Set to 3 Reduced

rated output

current (A)

operation

Set to 4 Reduced

rated output

current (A)

Set Values

Value Descri pti on

0 Low carrier frequency at low speed disabled.

1 Low carrier frequency at low speed enabled.

• Normally set n75 to 0.

• When the output frequency is 5 Hz or higher and the output current rate is 110% or less, the carrier frequency will be automatically reduced to 2.5 kHz with n75 set to 1. If the load is heavy at low speed, the Inverter will withstand higher overcurrent by suppressing the heat radiation of the Inverter caused by the carrier frequency.

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

DC Injection Braking Function Chapter 6-2

6-2 DC Injection Braking Function

The DC injection braking function applies DC on the induction motor for braking control.

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

DC Injection Braking to Stop: Adjust the stop DC injection braking time if the motor rotating does not decelerate to a stop in normal operation due to inertia from a heavy load. By increasing the DC injection braking time or DC injection braking current, the time required for stopping the motor is reduced.

n52 DC Control Current Changes during

operation

Setting range

n53 Interruption DC Control Time Changes during

Setting range

n54 Startup DC Control Time Changes during

Setting range

0 to 100 (%) Unit of

setting

0.0 to 25.5 (s) Unit of setting

1% Default setting 50

operation

0.1 s Default setting 0.5

operation

0.1s Default setting 0.0

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

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

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

DC Injection Braking Control

Output frequency

Minimum output frequency (n14)

n54 Startup DC control time

Time n53 Interruption DC control time

Stall Prevention Function Chapter 6-3

6-3 Stall Prevention Function

A stall will occur if the motor cannot keep up with the rotating magnetic field on the motor stator side when a large load is applied to the motor or a sudden acceleration/deceleration is performed.

In the J7AZ, stall prevention functions can be set independently for accelerating, running, and decelerating conditions.

n55 Stall Prevention Level during Deceleration Changes during

operation

Setting range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Descri pti on

0 Stall prevention during deceleration

1 Stall prevention during deceleration

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

• If 0 is set, the deceleration time will be automatically lengthened to prevent overvoltage.

Stall Prevention during Deceleration with n55 Set to 0

Output frequency

Deceleration time is controlled to prevent overvoltage.

Deceleration time (Set value)

Time

Stall Prevention Function Chapter 6-3

n56 Stall Prevention Level during Acceleration Changes during

operation

Setting range

30 to 200 (%) Unit of

setting

1% Set Values 170

Set Values • This function is used to stop accelerating the load if the output current

exceeds the set current value so that the Inverter will continue operating without stalling. The Inverter accelerates the load while the output current is the same as or less than the set value.

• Set the parameter as percentage based on the rated Inverter current as 100%.

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

• Decrease the set value if the capacity of the motor is smaller than that of the Inverter or the motor stalls with the default value. The set value is normally 2 or 3 times higher than the rated current of the motor. Set this current as percentage based on the rated inverter current as 100%.

Stall Prevention during Acceleration

Output current

n56 (stall prevention level during acceleration)

Output frequency

Time

The output frequency is controlled so that the Inverter will not stall.

Time

Stall Prevention Function Chapter 6-3

n57 Stall Prevention during Operation Changes during

operation

Setting range

30 to 200 (%) Unit of

setting

1% Default setting 160

Set Values • This function will decrease the output frequency if the output current

exceeds the set current value by a minimum of approximately 100 ms so that the Inverter will continue operating without stalling. The Inverter will increase the output frequency to return to the set frequency reference level when the output current is less than the set value.

• The Inverter accelerates or decelerates the output frequency according to the preset acceleration or deceleration time. (Acceleration time 1: n16, n17 or acceleration time 2: n18, n19)

• Set the parameter as percentage based on the rated Inverter current as 100%.

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

• Decrease the set value if the capacity of the motor is smaller than that of the Inverter or the motor stalls with the default value. The set value is normally 2 or 3 times higher than the rated current of the motor. Set this current in percentage based on the rated Inverter current as 100%.

Stall Prevention during Acceleration

Output current

Output frequency

n57 (Stall prevention level during acceleration)

Time

The output frequency is controlled so that the Inverter will not stall.

Time

Overtorque Detection Function Chapter 6-4

6-4 Overtorque Detection Function

When an excessive load is applied to the equipment, the Inverter detects the overtorque condition through an increase in the output current.

n59 Overtorque Detection Function Selection Changes during

operation

Setting range

0 to 4 Unit of

setting

1 Default setting 0

Set Values

Value Descri pti on

0 Inverter does not monitor overtorque.

1 Inverter monitors overtorque only when speed is matched. It continues operation (issues warning) even

2 Inverter monitors overtorque only when speed is matched. It discontinues operation (through protective

3 Inverter always monitors overtorque during operation. It continues operation (issues warning) even after

4 Inverter always monitors overtorque during operation. It discontinues operation (through protective

after overtorque is detected.

function) when overtorque is detected.

overtorque is detected.

function) when overtorque is detected.

• Set n60 for overtorque detection level and n61 for overtorque detection time to enable the overtorque detection function. The Inverter will detect overtorque when the current the same as or higher than the detection level is output for the preset detection time.

• Set n40 for multi-function output to either of the following so that external overtorque detection output will be ON.

Set Value: 6 for overtorque detection (NO)

Set Value: 7 for overtorque detection (NC)

Overtorque Detection

Output current

Overtorque detection (NO)

Note Overtorque detection will be canceled if the output current decreases from the detection level by approximately 5% of the Inverter rated current.

n60 Overtorque Detection Level Changes during

Setting range

30 to 200 (%) Unit of

Overtorque detection time

setting

See note.

n60 (Overtorque detection level)

n61

operation

1% Default setting 160

Time

Torque Compensation Function Chapter 6-5

Set Values Set the parameter as percentage based on the rated Inverter current as

100%.

n61 Overtorque Detection Time Changes during

operation

Setting range

0.1 to 10.0 (s) Unit of setting

0.1 s Default setting 0.1

Set Values • Set the overtorque detection time.

• The Inverter will detect overtorque when the current the same as or higher than the detection level is output for the preset detection time.

6-5 Torque Compensation Function

This function increases the output torque of the Inverter by detecting an

n63 Torque Compensation Gain Changes during

Setting range

0.0 to 2.5 Unit of

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

increase in the motor load.

Yes

operation

0.1 Default setting 1.0

setting

• Change the default setting in the following cases.

The wiring distance between the Inverter and motor is long: Set the gain to a larger value.

The capacity of the motor is lower than the maximum applicable motor capacity of the Inverter: Set the gain to a larger value.

The motor vibrates: Set the gain to a smaller value.

• The torque compensation gain must be adjusted so that the output current at low speed will not exceed 50% of the rated output current of the Inverter, otherwise the Inverter may be damaged.

Slip Compensation Function Chapter 6-6

6-6 Slip Compensation Function

The slip compensation function calculates the motor torque according to the output current, and sets gain to compensate for output frequency. This function is used to improve speed accuracy when operating with a load.

n64 Motor Rated Slip Changes during

operation

Setting range

0.0 to 20.0 (Hz) Unit of setting

0.1 Hz Default setting (see note)

Yes

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

Set Values • Set the rated slip value of the motor in use.

• This parameter is used as a slip compensation constant.

• Calculate the rated motor slip value from the rated frequency (Hz) and rpm on the motor nameplate by using the following formula.

Rated slit value (Hz) = Rated frequency (Hz) –

n65 Motor No-load Current Changes during

Setting range

0 to 99 (%) Unit of

setting

1% Default setting (see note)

Rated prm Number of poles

120

operation

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

Set Values • Set the motor current with no load in percentage based on the rated

motor current as 100%.

• Contact the motor manufacturer for the motor current with no load.

• This parameter is used as a slip compensation constant.

n66 Slip Compensation Gain Changes during

Setting range

0.0 to 2.5 Unit of setting

0.1 Default setting 0.0

operation

(see note)

Yes

Note This parameter is disabled with the value set to 0.0.

Set Values • Set the parameter to 1.0 first and check the operation of the Inverter.

Then fine-tune the gain with 0.1-gain increments or decrements.

If the speed is lower than the target value, increase the set value.

If the speed is higher than the target value, decrease the set value.

n67 Slip Compensation Time Constant Changes during

Setting range

0.0 to 25.5 (s) Unit of setting

0.1 s Default setting 2.0

operation

Set Values • This parameter is used for the response adjustment of the slip

compensation function.

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

• Change the default setting in the following cases.

The motor vibrates: Set the value to a larger value.

The motor response is low: Set the value to a smaller value.

Other Functions Chapter 6-7

6-7 Other Functions

The following description provides information on the other functions and parameter settings of the Inverter.

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

This parameter setting is for motor overload detection (OL1).

n33 Motor Protection Characteristic Selection Changes during

operation

Setting range

0 to 2 Unit of

setting

1 Default setting 0

Set Values

Value Descri pti on

0 Protection characteristics for general-purpose induction motors

1 Protection characteristics for Inverter-dedicated motors

2 No protection

• This parameter is used to set the electric thermal characteristics of the motor to be connected.

• Set the parameter according to the motor.

• If a single Inverter is connected to more than one motor, set the parameter to 2 for no protection. The parameter is also disabled by setting n32 for rated motor current to 0.0. To protect each motor from overload, be sure to take an appropriate measure such as the installation of a thermal relay.

n34 Motor Protection Time Changes during

operation

Setting range

1 to 60 (min) Unit of

setting

1 min Default setting 8

Set Values • This parameter is used to set the electronic thermal protection constant of

motor overload detection OL1.

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

• To set the parameter according to the characteristics of the motor, confirm the thermal time constant with the motor manufacturer and set the parameter with some margin. In other words, set the value a little shorter than the thermal time constant.

• To detect motor overloading more quickly, reduce the set value, provided that it does not cause any application problems.

Other Functions Chapter 6-7

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

This parameter is used to operate the cooling fan of the Inverter while the Inverter is turned on or only while the Inverter is in operation.

n35 Cooling Fan Operation Selection Changes during

operation

Setting range

0, 1 Unit of

setting

1 Default setting 0

Set Values

Value Descri pti on

0 The fan rotates only while the RUN command is input and for 1 minute after the Inverter stops

1 The fan rotates while the Inverter is turned on.

operating.

• This parameter is available only if the Inverter incorporates a cooling fan.

• If the operation frequency of the Inverter is low, the life of the fan can be prolonged by setting the parameter to 0.

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

The parameter specifies the processing that will be performed when a momentary power interruption occurs.

n47 Momentary Power Interruption Compensation Changes during

Setting range

0 to 2 Unit of

setting

1 Default setting 0

operation

Set Values

Value Descri pti on

0 Disabled. (An undervoltage fault will be detected when there is momentary power interruption for 15 ms

or more.)

1 The Inverter will continue operating if power is restored within 0.5 s. (see note 1)

2 The Inverter will restart when power is restored. (see note 2)

Note 1. If the parameter is set to 1, an undervoltage warning will be detected and

the output of the Inverter will be shut off for 0.5 s when a momentary power interruption occurs. The Inverter will restart after speed searching if power is restored within 0.5 s. Undervoltage fault 1 will be detected if power failure continues for more than 0.5 s.

2. If the parameter is set to 2, an undervoltage warning will be detected and the output of the Inverter will be shut off when a momentary power interruption occurs. The Inverter will then wait for power restoration. When power is restored, the Inverter will restart after speed searching.

Other Functions Chapter 6-7

6-7-4 Fault Retry (n48)

Caution

n48 Fault Retry Changes during

Setting range

Set Values • Set the number of fault retries required.

0 to 10 Unit of

The Inverter may be break if the fault retry function is used.

If the Inverter breaks, take the following measures: Be sure to install a no-fuse breaker (NFB). Provide the Inverter and peripheral machines with a sequence so that the machines will stop operating when the Inverter has an operational fault.

• The fault retry function automatically resets and restarts the Inverter in the case the Inverter has an overvoltage fault, overcurrent fault, or ground fault.

• In the case of any other fault, the protective function operates instantly and the fault retry function does not operate.

• This function is to be used only if the user does not want to interrupt the mechanical system, even if this function may damage the Inverter.

• Set n40 for multi-function output to the following value so that external overtorque detection output will be turned on.

Set value: 14 for fault retries

operation

1 Default setting 0

setting

• The count of fault retries will be cleared in any of the following cases.

The Inverter is normal for 10 minutes continuously after the latest fault retry was made.

Power supply to the Inverter is interrupted.

A fault reset is input.

Other Functions Chapter 6-7

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

• The frequency jump function prevents the Inverter from generating frequencies that make the mechanical system resonate.

• The frequency jump function can be used effectively to set two dead bands of a frequency reference.

n49 Jump Frequency 1 Changes during

operation

Setting range

n50 Jump Frequency 2 Changes during

Setting range

n51 Jump Width Changes during

Setting range

0.0 to 400 (Hz) Unit of setting

0.0 to 25.5 (Hz) Unit of setting

0.1 Hz (see note)

0.1 Hz Default setting 0.0

Default setting 0.0

operation

Unit of setting 0.0

operation

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

and 1-Hz increments if the frequency is 100 Hz or greater.

Set Values • Set n49 and n50 for jump frequencies 1 and 2 to the central values of

jumping frequencies.

• These values must satisfy the following condition. n49 ≥ n50

• The value in n51 must be set for the jump width.

• This function is disabled with n51 set to 0.0.

• The operation of the Inverter within the dead bands is prohibited. While the Inverter is in acceleration or deceleration control, however, the Inverter does not jump the bands but changes the frequency smoothly.

Frequency Jump Function

Output frequency

n51

n50 n49

n49 ≥ n50

Reference frequency

Other Functions Chapter 6-7

6-7-6 Frequency Detection Function

• The 3G3JV has the following frequency detection functions.

Frequency Detection: Detects that the frequency reference coincides with the output frequency.

Frequency Detection Levels 1 and 2: Detects that the output frequency is the same as or higher or lower than the set value (frequency detection level) in n58.

• The parameter n40 for multi-function output must be set for the frequency detection function.

Frequency Detection

The parameter n40 for multi-function output must be set for frequency detection output.

Set value: 2 for frequency detection

Frequency Detection Operation

Output frequency

Frequency detection

Detection width ±2 Hz

Reset width ±4 Hz

Frequency reference

Time

Other Functions Chapter 6-7

Frequency Detection Levels 1 and 2

• The parameter n40 for multi-function output must be set for frequency detection output.

Set value: 4 for frequency detection level 1 (Output frequency ≥ n58)

Set value: 5 for frequency detection level 2 (Output frequency ≤ n58)

• Set the frequency detection level in n58.

n58 Frequency Detection Level Changes during

operation

Setting range

0.0 to 400 (Hz) Unit of setting

0.1 Hz (see note)

Default setting 0.0

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

and 1-Hz increments if the frequency is 100 Hz or over.

Frequency Detection Level 1

Output frequency

Reset width ±2 Hz

Frequency detection level 1

Frequency Detection Level 2

n58 (Frequency detection level)

Time

Output frequency

Frequency detection level 2

Reset width +2 Hz

n58 (Frequency detection level)

Time

Other Functions Chapter 6-7

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

• This function changes the reference frequency by turning the UP and DOWN commands on and off.

• In order to use this function, set n39 for multi-function inputs 4 to 34. Then the multi-function input 3 (S4) and multi-function input 4 (S5) terminals are set as described below.

Multi-function input 3 (S4): UP command (The value in n38 for multifunction input 3 is ignored.)

Multi-function input 4 (S5): DOWN command

• The output frequency held by the UP/DOWN function will be stored in the memory if n62 for UP/DOWN command frequency memory is set to 1.

• By setting n62 to 1, the frequency reference kept on hold for 5 s or more will be retained even after a power interruption, and operation will be restarted at this frequency the next time the RUN command is input.

• The stored output frequency will be cleared from the memory if n62 is set to 0. The retained frequency is initialized with n01 for parameter initialization set to 8 or 9.

Note While this function is used, frequency references can be used with the UP/

DOWN command or inching frequency command. All multi-step speed references are disabled.

n62 Frequency Hold Function Selector Changes during

Setting range

0, 1 Unit of

setting

1 Default setting 0

operation

Other Functions Chapter 6-7

Set Values

Value Descri pti on

0 The frequency on hold is not retrained.

1 The frequency on hold for 5 s or more is retailed.

Operation of UP/DOWN Function

RUN command (Forward rotation)

UP command (S4)

DOWN command (S5)

Output frequency

Upper limit

Time

Lower limit

Status

Frequency

detection

Note Status U: UP (acceleration) D: DOWN (deceleration) H: Hold U1: Frequency acceleration restricted by upper limit. D1: Frequency deceleration restricted by lower limit.

Time

The following ON/OFF combinations of UP and DOWN commands are possible.

Command Acceleration Deceleration Hold Hold

S4 (UP command) ON OFF OFF ON

S5 (DOWN command) OFF ON OFF ON

With the UP/DOWN function used, the output frequency has the following restrictions for upper and lower limits.

Upper limit: The maximum frequency in n09 or the frequency reference upper limit in n30, whichever is smaller.

Lower limit: The minimum output frequency in n14 or frequency reference lower limit in n31, whichever is smaller.

Omron J7 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

1-1 Function

1-2 Nomenclature

2-1 Installation

2-1-1 Dimensions

2-1-2 Installations Conditions

2-2 Wiring

2-2-1 Removing and Mounting the Covers

2-2-2 Terminal Block

2-2-3 Standard Connections

2-2-4 Wiring around the Main Circuit

2-2-5 Wiring Control Circuit Terminals

2-2-6 Conforming to EC Directive

3-1 Nomenclature

3-2 Outline of Operation

4-1 Procedure for Test Run

4-2 Operation Example

4-2-1 Power Connection

4-2-2 Check the Display Status

4-2-3 Initializing Parameters

4-2-4 Setting the Rated Motor Current

4-2-5 No-load Operation

4-2-6 Actual Load Operation

5-1 Initial Settings

5-2 V/f Control

5-3 Setting the Local/Remote Mode

5-4 Selecting the Operation Command

5-5 Setting the Frequency Reference

5-5-1 Selecting the Frequency Reference

5-5-2 Upper and Lower Frequency Reference Limits

5-5-3 Adjusting the Analog Input

5-5-4 Setting Frequency References through Key Sequences

5-6 Setting the Acceleration/Deceleration Time

5-7 Selecting the Reverse Rotation-prohibit

5-8 Selecting the Interruption Mode

5-9 Multi-function I/0

5-9-1 Multi-function Input

5-9-2 Multi-function Output

5-10 Analog Monitor Output

6-1 Setting the Carrier Frequency

6-2 DC Injection Braking Function

6-3 Stall Prevention Function

6-4 Overtorque Detection Function

6-5 Torque Compensation Function

6-6 Slip Compensation Function

6-7 Other Functions

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

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

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

6-7-4 Fault Retry (n48)

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

6-7-6 Frequency Detection Function

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