Omron R88D-KN02H-ECT-R - User Manual

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Cat. No. I573-E1-03

USER’S MANUAL

OMNUC G5 SERIES

R88M-K@

(AC Servomotors)

R88D-KN@-ECT-R

(AC Servo Drives)

AC SERVOMOTORS/SERVO DRIVES

WITH BUILT-IN EtherCAT COMMUNICATIONS



Table of Contents

Questions and Answers

K
Kevin LucasAug 30, 2025
Why Omron Servo Drives show Servo Drive Overheat?
- T
  Tyler HenryAug 30, 2025
  Omron Servo Drives may overheat if the temperature of the Servo Drive radiator or power elements exceeds the specified value. This can be caused by a high ambient temperature around the Servo Drive or an overload condition. To resolve this, improve the ambient temperature and cooling conditions of the Servo Drive. Additionally, consider increasing the capacities of the Servo Drive and the Servomotor, setting longer acceleration and deceleration times, and reducing the load.
A
asanchezAug 29, 2025
Why Omron R88D-KN02H-ECT-R Servo Drives show Regeneration Overload?
- L
  Linda MartinezAug 29, 2025
  Omron Servo Drives may show a Regeneration Overload if the regenerative energy exceeds the processing capacity of the Regeneration Resistor. This can occur due to high regenerative energy during deceleration from a large load inertia, high Servomotor rotation speed, or the external resistor's operating limit being restricted to a 10% duty. Check the load rate of the Regeneration Resistor through communications. Increase the capacities of the Servo Drive and the Servomotor, and lengthen the deceleration time. Use an External Regeneration Resistor. Set the Regeneration Resistor Selection to 2.
K
Kevin MaddenAug 27, 2025
How to fix Error Counter Overflow in Omron R88D-KN02H-ECT-R Servo Drives?
- R
  Robert WoodsAug 27, 2025
  To fix an Error Counter Overflow in Omron Servo Drives, the issue arises when position error pulses exceed the Following error window setting. This can occur if motor operation doesn't follow the command or if the Following error window value is too small. Begin by checking if the Servomotor rotates according to the position command pulse. Examine the torque monitor for saturated output torque and adjust the gain accordingly. Maximize the set values on the Positive and Negative torque limit values. Ensure the encoder is wired correctly. Lengthen the acceleration and deceleration times, and reduce the load and speed. If necessary, increase the set value of object 6065 hex.

Omron R88D-KN02H-ECT-R Specifications

General

Brand	Omron
Model	R88D-KN02H-ECT-R
Category	Servo Drives
Language	English

Summary

Models and External Dimensions

Model Tables

Lists standard Servo Drive and Servomotor models, combinations, and cables.

External and Mounting Dimensions

Provides detailed external and mounting dimensions for Servo Drives and Servomotors.

Specifications

Servo Drive Specifications

Lists general specifications, international standards, and EC directives for Servo Drives.

Servomotor Specifications

Details general specifications, torque-rotation speed, and brake specifications for OMNUC G5-Series Servomotors.

System Design

Installation Conditions

Details space, mounting, environment, and mechanical connection requirements for installation.

Wiring

Provides connection examples and wiring details for peripheral equipment, motors, and drives.

Wiring Conforming to EMC Directives

Regenerative Energy Absorption

Drive Profile

Controlling the State Machine of the Servo Drive

Explains Servo Drive state control using Controlword and Statusword.

Cyclic Synchronous Position Mode

Details configuration and control functions for CSP mode.

Fully-closed Control

Explains achieving accurate positioning with external encoder feedback.

Applied Functions

Sequence I;O Signals

Explains setting sequences for input and output signals, including default settings.

Safety Function

Safe Torque OFF Function

Explains the STO function for cutting off motor current via safety device signals.

Details on Servo Parameter Objects

Basic Settings

Explains basic settings like rotation direction, control mode, and autotuning.

Gain Settings

Covers position and speed loop gain adjustments, including autotuning and manual tuning.

Operation

Operational Procedure

Outlines the operational procedure after installation and wiring.

Preparing for Operation

Lists items to check before turning on the power supply.

Trial Operation

Explains how to perform trial operation to confirm system correctness.

Adjustment Functions

Gain Adjustment

Covers automatic and manual gain adjustment methods.

Realtime Autotuning

Troubleshooting and Maintenance

Warnings

Errors

Details error output, reset procedures, and error numbers.

Troubleshooting

Guides on determining error causes from displays and operation states and taking measures.

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