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Omron R88D-KN01L-ECT-L - User Manual

Omron R88D-KN01L-ECT-L
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AC SERVOMOTORS/SERVO DRIVES
G5-series WITH BUILT-IN
EtherCAT
®
COMMUNICATIONS
Linear Motor Type
User’s Manual
I577-E1-04
R88L-EC- (Linear Motors)
R88D-KN-ECT-L (AC Servo Drives)

Table of Contents

Questions and Answers

  • M
    Matthew CookAug 15, 2025
    What to do if Omron R88D-KN01L-ECT-L Servo Drives show overvoltage?
    • C
      charlesfarrellAug 15, 2025
      If your Omron Servo Drive indicates an overvoltage error, it means the power supply voltage has exceeded the allowable range. Check the voltage between the connector (L1, L2, and L3) lines and ensure you are inputting the correct voltage. If a phase advance capacitor or UPS is in use, remove it. Also, inspect the Regeneration Resistor wiring between the B1 and B2 terminals for breaks using a tester; if broken, replace the resistor. Ensure the regeneration resistance and wattage match specified values, adjusting if necessary based on regenerative energy calculations. If the issue persists, the Servo Drive may be faulty and require replacement.
  • P
    Patrick CortezAug 18, 2025
    What to do if Omron R88D-KN01L-ECT-L show overcurrent?
    • P
      Paul ScottAug 18, 2025
      If an overcurrent error occurs on your Omron Servo Drives, it indicates that the current flowing through the converter has exceeded the specified value. First, disconnect the motor cable and turn the servo ON. If the error recurs immediately, replace the Servo Drive. Check the motor cable for short circuits between phases U, V, and W, and ensure proper connection. Inspect the insulation resistance between phases U, V, and W of the motor cable and the grounding wire; replace the motor if insulation is faulty. Verify that motor wiring contacts are secure and that the motor is suitable for the Servo Drive. Ensure that command inputs are delayed by at least 100 ms after turning the servo ON and that the external regeneration resistor's resistance is above the minimum allowable value.
  • T
    Travis EspinozaAug 21, 2025
    What to do if Omron Servo Drives are overloaded?
    • R
      Robert CraneAug 21, 2025
      If your Omron Servo Drives are experiencing an overload, it means the force command feedback exceeds the specified overload level. Check for oscillating or fluctuating force waveforms during analog output. Increase the capacities of the Servo Drive and motor, set longer acceleration and deceleration times, or reduce the load. Readjust the gain if vibration or hunting occurs. Ensure the motor cable is correctly connected and replace it if necessary. Remove any distortion from the machine and reduce the load. Check the voltage at the brake terminals to ensure the brake is OFF. Verify that the motor and external encoder are wired correctly, matching the axes.
  • P
    pagejaredAug 25, 2025
    Why Omron R88D-KN01L-ECT-L show main circuit power supply undervoltage?
    • R
      rjacksonAug 25, 2025
      An undervoltage error on your Omron Servo Drives indicates that the voltage between the positive and negative terminals in the main power supply converter has dropped below the specified value. This can be due to a low power supply voltage, a momentary power interruption, or insufficient power supply capacity. Measure the voltage between the connector (L1, L2, and L3) lines. Increase the power supply voltage or change the power supply. Check the setting of the Momentary Hold Time (3509 hex). Ensure each phase of the power supply is correctly connected, using L1 and L3 for single-phase 100 V and single-phase 200 V. If the issue persists, the Servo Drive may be faulty and require replacement.
  • S
    Shannon HorneAug 27, 2025
    What to do if Omron R88D-KN01L-ECT-L show regeneration overload?
    • L
      lpetersAug 27, 2025
      If your Omron Servo Drives display a regeneration overload, it means the regenerative energy exceeds the processing capacity of the Regeneration Resistor. Check the load rate of the Regeneration Resistor through communications. Verify the operation pattern (speed monitor) and check for excessive regeneration warnings. Increase the capacities of the Servo Drive and motor and lengthen the deceleration time. Consider using an External Regeneration Resistor. If the operating limit of the external resistor is limited to a 10% duty, set the Regeneration Resistor Selection (3016 hex) to “2.”
  • L
    Leroy ConnerAug 30, 2025
    How to fix control power supply undervoltage on Omron R88D-KN01L-ECT-L?
    • S
      Stacy SanfordAug 30, 2025
      If you're experiencing a control power supply undervoltage issue with your Omron Servo Drives, it means the voltage between the positive and negative terminals in the control power supply converter has dropped below the specified value. Measure the voltage between the L1C and L2C lines on the connectors and the terminal block. Increase the power supply voltage or change the power supply. Also, increase the power supply capacity. If the problem persists, the Servo Drive may be faulty and require replacement.
  • E
    Elizabeth RodriguezSep 2, 2025
    What to do if Omron R88D-KN01L-ECT-L show following error counter overflow?
    • O
      oconnorjosephSep 2, 2025
      If your Omron Servo Drives display a following error counter overflow, it indicates that position error pulses have exceeded the setting of the Following error window (6065 hex). Check if the Motor operates according to the position command. Check on the force monitor to see if the output force is not saturated. Adjust the gain. Maximize the Force Limit setting being used. Wire the external encoder as shown in the wiring diagram. Lengthen the acceleration and deceleration times. Reduce the load and the speed. Increase the set value of object 6065 hex.
  • S
    sabrinastoneSep 5, 2025
    Why do Omron Servo Drives overheat?
    • M
      Matthew WheelerSep 5, 2025
      Omron Servo Drives may overheat if the temperature of the Servo Drive radiator or power elements exceeds the specified value. This can be due to the ambient temperature being too high or an overload condition. Improve the ambient temperature and the cooling conditions of the Servo Drive. You may also need to increase the capacities of the Servo Drive and the motor, set longer acceleration and deceleration times, or reduce the load.
  • D
    dhowardSep 8, 2025
    What causes overspeed in Omron R88D-KN01L-ECT-L?
    • K
      Kevin JohnstonSep 9, 2025
      Overspeed in Omron Servo Drives occurs when the motor speed exceeds the value set in the Overspeed Detection Level Setting (3910 hex). To resolve this, avoid giving excessive speed commands. Check the input frequency, dividing ratio, and multiplication ratio of the position command. If overshooting occurs due to faulty gain adjustment, adjust the gain. Also, ensure the external encoder is wired correctly as shown in the wiring diagram.
  • A
    Angel WilliamsSep 12, 2025
    What causes external encoder connection error on Omron R88D-KN01L-ECT-L?
    • H
      Heather JohnsonSep 12, 2025
      An external encoder connection error on Omron Servo Drives typically occurs when a disconnection is detected because communications between the external encoder and the Servo Drive are interrupted more than the specified number of times. To resolve this, wire the external encoder as shown in the wiring diagram and correct the connector pin connections.

Omron R88D-KN01L-ECT-L Specifications

General IconGeneral
TypeServo Drive
ModelR88D-KN01L-ECT-L
Rated Output100 W
CommunicationEtherCAT
Output Current1.0 A
Ambient Operating Temperature0 to 55 °C
Power Supply Voltage200 to 240 VAC
Input Voltage200 to 240 VAC
Protection FunctionsOvercurrent, Overvoltage, Undervoltage, Overload, Overheat
Vibration Resistance4.9 m/s²
Shock Resistance19.6 m/s²

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