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Omron R88D-WT - User Manual

Omron R88D-WT
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USER’S MANUAL
MODELS R88M-Wj
(AC Servomotors)
MODELS R88D-WTj
(AC Servo Drivers)
AC SERVOMOTORS/SERVO DRIVERS
OMNUC W SERIES
Cat. No. I531-E1-09

Table of Contents

Questions and Answers

  • D
    Dean RuizSep 18, 2025
    What to do if Omron Servo Drives have missing phase detected?
    • S
      Steven RodriguezSep 18, 2025
      If your Omron Servo Drives are showing a missing phase, it means the main circuit power supply is not connected, a main circuit power supply phase is missing, or a wire is burned out. Check the main circuit power supply wiring.
  • J
    Joshua StevensonAug 26, 2025
    How to fix regeneration error on Omron Servo Drives?
    • G
      Gabriel JohnsonAug 27, 2025
      A regeneration error on Omron Servo Drives could be due to: * An error in the regenerative circuit parts. Replace the Servo Driver. * The External Regeneration Resistor is burned out. Replace the External Regeneration Resistor. * Apart from a short-circuit between B2 and B3, the external circuit resistor is not connected. Correctly connect the external circuit resistor (between B1 and B2).
  • T
    Tammy BrownAug 27, 2025
    What to do if Omron Servo Drives show overspeed?
    • P
      Patricia ThomasAug 27, 2025
      If you're encountering an overspeed error with your Omron Servo Drives, consider the following potential causes and solutions: * If the encoder signal between controllers is wired incorrectly, rewire correctly. * If the Servomotor power line is wired incorrectly, rewire correctly. * If the input command values are too large, input command values correctly. * If Pn300 (speed command scale), and Pn202 and Pn203 (electronic gear) settings are too large, set the parameters correctly. * If the speed limit is not performed during torque control, set Pn407 (speed limit). * If the rotation limit has been exceeded due to overshooting, adjust the gain. Lower the maximum specified speed.
  • M
    Michael EdwardsAug 28, 2025
    Why Omron Servo Drives are overheating?
    • D
      Derek GarciaAug 28, 2025
      If your Omron Servo Drives are overheating, possible causes include: * Control panel error. Replace the Servo Driver. * Ambient Servo Driver temperature exceeds 55°C. Lower the Servo Driver’s ambient temperature to 55°C or less. * Radiation shield sink air convection is poor. Mount according to mounting conditions. * The fan has stopped. Replace the Servo Driver. * Operating above rated output. Lighten the load.
  • T
    Timothy SaundersSep 18, 2025
    Why Omron Servo Drives show motor current error?
    • T
      thomas14Sep 18, 2025
      A motor current error in Omron Servo Drives can occur due to: * Servomotor power line is not connected. Correct the wiring. * Servomotor power line is wired incorrectly or the connection is defective. Check the Servomotor power line and correct the wiring. * Servomotor power line is broken or defective, preventing current from flowing correctly to the Servomotor. Check the conduction and resistance value, and replace the power line if it is defective. * Servomotor is defective. Replace the Servomotor. * Servo Driver is defective. Replace the Servo Driver.
  • J
    joannaandrewsNov 24, 2025
    What causes Omron Servo Drives to show overvoltage?
    • C
      Christian LawsonNov 24, 2025
      An overvoltage error in Omron Servo Drives can occur due to: * Main circuit power supply voltage being outside the tolerance range. Change the main circuit power supply voltage to within the tolerance range. * Load inertia being too great, resulting in a deceleration time that is too long. Calculate the regenerative energy and connect an external Regeneration Resistor with the required regeneration absorption capacity. * Main circuit power supply voltage exceeding the tolerance range. Reduce the main circuit power supply voltage to within the tolerance range. * Gravitational torque being too large during descent (vertical axis). Add a counterbalance to the machinery to lower gravitational torque. Slow the descent speed. Calculate the regenerative energy, and connect and external R...
  • C
    Christina MillsSep 10, 2025
    What causes Omron Servo Drives encoder overheating (ABS)?
    • T
      Thomas FergusonSep 10, 2025
      Encoder overheating (ABS) in Omron Servo Drives can be caused by: * Encoder is defective. Replace the Servomotor. * Ambient Servomotor temperature exceeds 40°C. Lower the ambient temperature to 40°C or less. * Servomotor spring mounting clip is too small. Use a spring mounting clip the same dimensions or greater than those of the radiation shield indicated in the Servomotor efficiency specifications. * Operating above rated output. Lighten the load.
  • D
    Dr. Tommy Richardson IIISep 12, 2025
    What to do if Omron Servo Drives have command input reading error?
    • S
      stephanieandersonSep 12, 2025
      If your Omron Servo Drives are showing a command input reading error, it could be due to command input reader misoperation. Reset the alarm, then re-start the operation. If the issue persists, it might be because the command input reader is broken, and you should replace the Servo Driver.
  • M
    Matthew KleinSep 4, 2025
    How to fix Omron Servo Drives main circuit detection error?
    • R
      Rita HarmonSep 4, 2025
      If your Omron Servo Drives are showing a main circuit detection error due to main circuit detection data error, replace the Servo Driver.
  • J
    Joshua DillonSep 2, 2025
    What causes Omron Servo Drives inrush resistance overload?
    • C
      Christian LyonsSep 2, 2025
      An inrush resistance overload in Omron Servo Drives can occur if the inrush current when the main circuit power supply is turned ON exceeds inrush resistor tolerance. Reduce the frequency by which the main circuit power supply is turned ON and OFF. If the issue persists, replace the Servo Driver.

Summary

Standard Models and Specifications

Standard Models

List of standard Servo Drivers, motors, and related cables/connectors.

Servo Driver and Servomotor Combinations

Table showing compatible Servo Driver and Servomotor models.

Servo Driver Specifications

Detailed specifications for OMNUC W-series AC Servo Drivers.

Servomotor Specifications

Performance and general specifications for Servomotors.

System Design and Installation

Installation Conditions

Guidelines for proper installation environment, mounting, and temperature.

Operation

User Parameters

Explanation and setting procedures for user-configurable parameters.

Making Adjustments

Guidelines for tuning servo parameters like gain for optimal performance.

Troubleshooting

Measures when Trouble Occurs

Preventive checks, analysis tools, and general troubleshooting steps.

Alarms

List of alarm codes, detected errors, causes, and countermeasures.

Troubleshooting

Detailed diagnostic procedures based on operating status and error codes.

Omron R88D-WT Specifications

General IconGeneral
TypeServo Drive
ModelR88D-WT
ManufacturerOmron
Ambient Operating Temperature0 to 55°C
Storage Temperature-20 to 85°C
SeriesG5 Series
Supply Voltage200 to 240 VAC
Input Voltage200-230V AC
Control MethodPosition, Speed, Torque control
CommunicationMECHATROLINK-III
Communication InterfaceRS-422/485
Protection FeaturesOverload, Overvoltage, Undervoltage
Humidity5 to 95% RH (non-condensing)
Vibration4.9 m/s²
WeightVaries by model
OutputVaries by model

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