YASKAWA CIMR-F7A - User Manual

Questions and Answers

C
Carlos TerryAug 20, 2025
What to do if my YASKAWA CIMR-F7A Inverter shows overcurrent?
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  Veronica LeeAug 20, 2025
  If your YASKAWA Inverter displays an overcurrent error, it could be due to several reasons: * A short-circuit or ground fault at the Inverter output, potentially caused by motor damage, worn insulation, or cable issues. * An excessive load or too-short acceleration/deceleration time. * Use of an incompatible motor or one with too large a capacity. * Switching a magnetic contactor at the Inverter output. * A short-circuit between +V, -V, and AC terminals. * Overload in the control circuit terminal. After identifying and correcting the cause, reset the fault. Also, ensure that the wiring is correct.
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Matthew MartinAug 21, 2025
What causes a ground fault on a YASKAWA Inverter and how to fix it?
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  Teresa ChenAug 22, 2025
  A ground fault on your YASKAWA Inverter can occur due to: * A ground fault at the Inverter output (potentially caused by motor burn damage, worn insulation, or a damaged cable). * A short-circuit between +V, -V, and AC terminals. * An overload in the control circuit terminal. To resolve this, first, ensure the wiring is correct. Then, after correcting the cause, reset the fault.
B
burgesssusanAug 25, 2025
What to do if my YASKAWA CIMR-F7A is overheating?
- J
  Joseph DavisAug 25, 2025
  If your YASKAWA Inverter's cooling fins are overheating, consider these possible causes: * The ambient temperature might be too high; in this case, install a cooling unit. * A nearby heat source could be the culprit; remove it. * The Inverter's cooling fan may have stopped; replace the cooling fan.
J
jonescourtneyAug 26, 2025
Why does my YASKAWA CIMR-F7A Inverter keep overloading?
- K
  Kenneth FisherAug 27, 2025
  An overload in your YASKAWA Inverter can stem from: * An excessive load or acceleration/deceleration times that are too short. To solve this, check the load size and adjust the acceleration, deceleration, and cycle times. * Incorrect constant settings for speed search, leading to motor hunting and vibration. Try using the speed search function, adjust the Speed search operating current (b3-02) and Speed search deceleration time (b3-03), or use the estimated speed search function (perform stationary autotuning for line-to-line resistance only). * In flux vector control, the directions of the motor and PG may be different. Correct the PG wiring, the motor wiring, or change the setting of PG rotation (F1-05).
R
raymaryAug 30, 2025
What causes a YASKAWA Inverter to display a main circuit undervoltage?
- E
  Elizabeth SnyderAug 30, 2025
  A main circuit undervoltage error on your YASKAWA Inverter may be caused by: * An open-phase in the input power supply. * A momentary power loss. * Loose wiring terminals for the input power supply. * Excessive voltage fluctuations in the input power supply. * A fault in the surge prevention circuit. * The magnetic contactor in the control circuit being released (contact failure in the auxiliary contact). * Corrosion on the contact of the magnetic contactor in the control circuit due to environmental dust or gas. Reset the fault after correcting its cause.
D
Daniel WallaceSep 1, 2025
What does it mean when my YASKAWA CIMR-F7A Inverter shows a fuse blown error?
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  Paul BergerSep 1, 2025
  If your YASKAWA Inverter indicates a blown fuse, it could mean: * The output transistor has failed due to a short-circuit or ground fault at the Inverter output. * Input power was supplied from the output side, possibly due to improper wiring or incorrect switching sequence for the commercial power supply. Replace the Inverter after correcting the cause.
H
hcruzSep 3, 2025
Why is my YASKAWA Inverter showing a motor overload?
- T
  Teresa BoydSep 3, 2025
  A motor overload on your YASKAWA Inverter can occur because: * The load is too heavy, or the acceleration time, deceleration time, and cycle time are too short. Check the load size and the length of the acceleration, deceleration, and cycle times. * The constant setting for speed search is incorrect, causing motor hunting and vibration. Use the speed search function, adjust the settings of the Speed search operating current (b3-02) and Speed search deceleration time (b3-03), or use the estimated speed search function (perform stationary autotuning for line-to-line resistance only). * Motor overload occurred when running at low speed. Check the size of the load, the setting of L1-01, or increase the frame size of the Inverter.
M
Miguel RodriguezSep 5, 2025
What to check if my YASKAWA CIMR-F7A Inverter displays a motor overheating fault?
- L
  Laura StewartSep 5, 2025
  If your YASKAWA Inverter displays a motor overheating fault, it is important to check: * The size of the load and the length of the acceleration, deceleration, and cycle times. * The V/f characteristics. * The motor temperature input on terminals A2 and A3. * The setting of E2-01 (motor rated current).
M
melissa65Sep 7, 2025
What to do if my YASKAWA CIMR-F7A displays a control power fault?
- M
  markmaysSep 7, 2025
  If your YASKAWA Inverter indicates a control power fault: * Ensure the wiring of the control power circuit is correct; fix it if necessary. * If using a 200 V/400 V Class Inverter of 11 kW or less, and a Backup Capacitor Unit for Momentary Power Loss is not attached, and the Momentary power loss ride-thru time (L2-02) factory setting has been changed to a larger value, attach a Backup Capacitor Unit for Momentary Power Loss.
M
Michael BrennanSep 9, 2025
What causes a YASKAWA Inverter to show a main circuit voltage fault?
- R
  rmcintoshSep 9, 2025
  A main circuit voltage fault on your YASKAWA Inverter can be triggered by: * An open-phase in the input power supply. * A momentary power loss. * Loose wiring terminals for the input power supply. * Excessive voltage fluctuations in the input power supply. * Poor voltage balance between phases. Reset the fault after correcting its cause.

Summary

Preface

General Precautions

General advice for safe and proper use of the inverter, including handling covers and illustrations.

Safety Information

WARNING

Indicates precautions that, if not heeded, could possibly result in loss of life or serious injury.

CAUTION

Indicates precautions that, if not heeded, could result in relatively serious or minor injury, damage to the product, or faulty operation.

IMPORTANT

Indicates important information that should be memorized.

Safety Precautions

Confirmations upon Delivery

Actions to take upon receiving the inverter to check for damage or missing components.

Installation

Precautions and guidelines for safely installing the inverter.

Wiring

Essential safety precautions to follow when wiring the inverter and its components.

Setting User Constants

Setting the Autotuning Mode

Details on selecting and configuring the autotuning mode for motor parameter setup.

Trial Operation

Trial Operation Procedures

Details the step-by-step procedure for conducting trial operation.

Basic Settings

Lists essential constants that must be set before trial operation.

Settings for the Control Methods

Explains how to make settings according to the selected control method and autotuning.

Maintenance and Inspection

Periodic Inspection

Lists items to check during periodic maintenance.

Cooling Fan Replacement Outline

Provides instructions for replacing cooling fans in various inverter models.

Other

Do not attempt to modify or alter the Inverter

Warning against unauthorized modifications to prevent electrical shock or injury.

Warning Information and Position

Warning Information

Highlights critical warnings about electrical shock risks and the need to read the manual.

Warranty Information

Free Warranty Period and Scope

Details the warranty coverage, period, and what is included or excluded.

Restrictions

Outlines limitations on product use, especially concerning life-threatening applications.

Registered Trademarks

Before Reading This Manual

Advises users to check the inverter nameplate for specific model details.

1 Handling Inverters

Varispeed F7 Introduction

Provides an overview of the Varispeed F7 series, its applications, and models.

Confirmations upon Delivery

Details the checks to perform immediately after receiving the inverter.

Component Names

Identifies the external appearance and names of the inverter's components.

Exterior and Mounting Dimensions

Shows exterior diagrams and dimensions for different inverter types.

Enclosed Wall-mounted Inverters [NEMA1 (Type 1)]

Describes the specifications and protection of enclosed wall-mounted inverter types.

Checking and Controlling the Installation Site

Guidelines for selecting and maintaining an optimal installation site for the inverter.

Installation Orientation and Space

Recommends vertical installation and specifies required clearances for heat dissipation.

Removing and Attaching the Terminal Cover

Provides instructions for safely removing and reattaching the terminal cover.

Removing;Attaching the Digital Operator and Front Cover

Details the process of removing and attaching the digital operator and front cover.

Removing and Attaching the Protection Cover

Details the procedure for removing and attaching top and bottom protection covers.

2 Wiring

Connection Diagram

Shows the overall connection diagram of the inverter.

Wiring Main Circuit Terminals

Provides specifications for applicable wire sizes and closed-loop connectors.

Wiring Control Circuit Terminals

Details wire sizes and closed-loop connectors for control circuit terminals.

Installing and Wiring Option Boards

Describes how to install and wire various option boards.

3 Digital Operator and Modes

Digital Operator

Explains the displays and functions of the digital operator.

Modes

Describes the inverter's operating modes and how to switch between them.

Drive Mode

Explains how the inverter can be operated and its status monitored in drive mode.

Quick Programming Mode

Allows monitoring and setting of constants for trial operation.

Advanced Programming Mode

Allows monitoring and setting of all inverter constants.

Verify Mode

Used to display and set constants changed from default settings.

Autotuning Mode

Automatically tunes and sets motor constants.

4 Trial Operation

Overview of Trial Operation Procedure

Presents a flowchart for performing trial operation and setting basic constants.

Trial Operation Procedures

Details the step-by-step procedure for conducting trial operation.

Basic Settings

Lists essential constants that must be set before trial operation.

Settings for the Control Methods

Explains how to make settings according to the selected control method and autotuning.

5 User Constants

User Constant Descriptions

Explains the structure and meaning of user constant tables.

Digital Operation Display Functions and Levels

Shows the digital operator display hierarchy.

User Constants Settable in Quick Programming Mode

Lists user constants required for inverter operation that can be set in quick programming mode.

6 Constant Settings by Function

Application and Overload Selections

Explains how to select overload settings based on the application.

Frequency Reference

Explains methods for inputting the frequency reference.

Run Command

Explains input methods for the Run Command.

Stopping Methods

Explains methods for stopping the Inverter.

Acceleration and Deceleration Characteristics

Explains the acceleration and deceleration characteristics.

Adjusting Frequency References

Explains methods for adjusting frequency references.

Speed Limit (Frequency Reference Limit Function)

Explains how to limit the motor speed.

Improved Operating Efficiency

Explains functions for improving motor operating efficiency.

Machine Protection

Explains functions for protecting the machine.

Continuing Operation

Explains functions for continuing or automatically restarting Inverter operation.

Inverter Protection

Explains functions for protecting the Inverter and the braking resistor.

Input Terminal Functions

Explains input terminal functions and setting operating methods.

Output Terminal Functions

Explains output terminal functions, which set output methods.

Monitor Constants

Explains analog monitor and pulse monitor constants.

7 Troubleshooting

Protective and Diagnostic Functions

Describes the alarm functions of the Inverter.

Fault Detection

Explains how the inverter detects faults and the corresponding actions.

Alarm Detection

Describes alarm functions that do not operate the fault contact output.

Operation Errors

Explains errors occurring due to invalid settings or contradictions.

Errors During Autotuning

Lists errors that can occur during autotuning.

Errors when Using the Digital Operator Copy Function

Lists errors that can occur when using the copy function.

Troubleshooting

Provides guidance for addressing issues when the inverter and motor do not operate as expected.

If the Motor Does Not Operate

Provides information for when the motor does not operate.

If the Motor Does Not Put Out Torque or If Acceleration is Slow

Provides information for when the motor does not output torque or acceleration is slow.

If the Motor Overheats

Provides information on motor overheating causes and corrective actions.

8 Maintenance and Inspection

Maintenance and Inspection

Describes basic maintenance and inspection for the inverter.

Periodic Inspection

Lists items to check during periodic maintenance.

Cooling Fan Replacement Outline

Provides instructions for replacing cooling fans in various inverter models.

9 Specifications

Standard Inverter Specifications

Lists standard inverter specifications by capacity.

Specifications by Model

Provides specifications categorized by model number.

Common Specifications

Lists specifications applicable to both 200V and 400V Class inverters.

Specifications of Options and Peripheral Devices

Details specifications for available options and peripheral devices.

10 Appendix

Varispeed F7 Control Methods

Details the Varispeed F7 Inverter's control methods and their features.

Inverter Application Precautions

Provides precautions for selecting, installing, setting, and handling inverters.

Motor Application Precautions

Offers precautions for motor applications when using the inverter.

Conformance to UL Standard

Gives points regarding conformance to UL standards.

Conformance to CE Markings

Provides points regarding conformance to CE markings.

Wiring Examples

Shows wiring examples for various connections.

User Constants

Lists user constants and their factory settings.

YASKAWA CIMR-F7A Specifications

General

Input Voltage	200-240V AC, 380-480V AC, 500-600V AC
Output Voltage	Matches Input Voltage
Horsepower Range	0.5 HP to 300 HP
Power Range	0.4 kW to 220 kW
Frequency Range	0.1 Hz to 400 Hz
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Protection Functions	Overcurrent, Overvoltage, Undervoltage, Overheating, Short Circuit, Ground Fault
Communication Options	RS-485, Modbus, DeviceNet, Profibus, Ethernet
Operating Temperature	-10°C to 50°C
Storage Temperature	-20°C to 65°C
Humidity	5% to 95% (non-condensing)
Cooling Method	Fan Cooled
Enclosure Rating	IP20