USD
Yaskawa Servopack Error 710
Video on Youtube
The YASKAWA servopack displayed an ER710 overload alarm, and the LCD screen indicated a "Left Home Sensor or Servo Motor Fault." The machine failed to move because the motor could not complete the homing (return-to-zero) sequence.
Troubleshooting and Resolution: Instead of immediately removing the motor housing, the technician inspected the unit and discovered that the mechanical movement path was jammed by a circular iron plate. After removing the plate and restarting the equipment, the alarm cleared, and the issue was resolved.
Root Cause: The servo motor is required to drive components in a left-right sliding motion to complete the homing process; the iron plate obstructed the path of movement, causing a mechanical stall and triggering the overload alarm (a self-protection response to the motor being "jammed").
Key Takeaway: When a servo motor overload alarm occurs, the first step should be to check for external mechanical obstructions (the most common cause), as these can often be resolved without complex tools. Maintenance should follow the "external-before-internal" principle—inspecting the external load before examining the circuitry—to avoid unnecessary disassembly.
The YASKAWA servopack displayed an ER710 overload alarm, and the LCD screen indicated a "Left Home Sensor or Servo Motor Fault." The machine failed to move because the motor could not complete the homing (return-to-zero) sequence.
Troubleshooting and Resolution: Instead of immediately removing the motor housing, the technician inspected the unit and discovered that the mechanical movement path was jammed by a circular iron plate. After removing the plate and restarting the equipment, the alarm cleared, and the issue was resolved.
Root Cause: The servo motor is required to drive components in a left-right sliding motion to complete the homing process; the iron plate obstructed the path of movement, causing a mechanical stall and triggering the overload alarm (a self-protection response to the motor being "jammed").
Key Takeaway: When a servo motor overload alarm occurs, the first step should be to check for external mechanical obstructions (the most common cause), as these can often be resolved without complex tools. Maintenance should follow the "external-before-internal" principle—inspecting the external load before examining the circuitry—to avoid unnecessary disassembly.
