Yaskawa Error Code A910

The Yaskawa error code A.910 is an Overload Warning that indicates a servo drive is nearing its maximum capacity but has not yet reached a critical shutdown state . It serves as a precursor to more severe overload alarms, specifically A.710 (instantaneous maximum load) or A.720 (continuous maximum load). What Does A.910 Mean? Unlike a "fault" that immediately stops the motor, A.910 is classified as a warning . It triggers when the drive detects that the motor is operating for an extended period under a torque that significantly exceeds its rated characteristics. Ignoring this warning typically leads to a full system halt once the overload threshold is surpassed. Common Causes of A.910 Several mechanical and electrical factors can trigger an overload warning: Mechanical Resistance : Jammed machinery, worn bearings, or excessive friction in the mechanical system. Operating Conditions : The motor is being asked to accelerate too quickly or handle a load beyond its rated capacity. Wiring Issues : Incorrect or faulty contact in the servomotor or encoder wiring. Parameter Settings : The overload warning level (parameter Pn52B ) may be set too low for the intended application. Ambient Temperature : High temperatures inside the SERVOPACK panel (exceeding ) can reduce performance and trigger warnings. Troubleshooting & Solutions To resolve an A.910 warning, follow these diagnostic steps: Check Mechanical Load : Inspect the machine for physical obstructions or increased friction. Ensure the load hasn't changed beyond the motor's specifications. Verify Wiring : Confirm that all motor and encoder cables are securely connected and free from damage. Monitor Torque : Use monitoring tools like SigmaWin+ to check the torque reference waveform. If the resting torque is consistently over 90%, the motor may be undersized. Adjust Parameters : If the mechanics are sound, consider adjusting the gain or increasing the overload warning level in parameter Pn52B to better suit your operation. Cooling : Ensure the control panel is well-ventilated and that any internal SERVOPACK fans are functioning correctly. If the warning persists after these checks, the SERVOPACK itself may be faulty and require repair or replacement. com/a-910-fault-in-yaskawa-sigma-7-servo-drive/">Yaskawa Sigma-7 or Sigma-5 drive? Yaskawa Servo Drive Alarm Codes Guide | PDF - Scribd

Yaskawa error code A.910 Overload Warning commonly found in the Sigma-5 and Sigma-7 servo drive series. It acts as a preemptive alert, indicating that the system is approaching a full overload alarm (A.710 or A.720), which would shut down the drive. Core Meaning This code signals that the motor is operating at a load or torque level that exceeds its continuous rating for a significant period. If ignored, the drive will eventually trip to protect the hardware. Yaskawa America Primary Causes and Solutions Mechanical Overload: The most common cause is excessive physical load or a mechanical jam. Inspect the machinery for friction, binding, or unexpected resistance. Incorrect Parameter Settings: The "Overload Warning Level" (Parameter ) might be set too low for your specific application. Verify and adjust Pn52B to a suitable level as per the Yaskawa Sigma-7 Product Manual Wiring Issues: Poor contact or incorrect wiring between the servomotor and the encoder can trigger false or early warnings. Ensure all motor and encoder cables are securely connected and correctly wired. Capacity Mismatch: The motor may be undersized for the required operation/duty cycle. Reconsider the operating conditions or increase the motor/drive capacity. Hardware Failure: In rare cases, internal failure of the itself can cause this error. If mechanical and wiring checks pass, the SERVOPACK may need replacement. Summary Table for Quick Reference Alarm Name Overload Warning Related Alarms A.710 (Instantaneous Overload), A.720 (Continuous Overload) Critical Parameter Pn52B (Overload Warning Level) Typical Recovery Inspect mechanics, verify wiring, or cycle power if intermittent If the error persists after checking these areas, would you like to troubleshoot a specific Yaskawa drive model or look into parameter adjustment steps AI responses may include mistakes. Learn more Yaskawa Servo Drive Alarm Codes Guide | PDF - Scribd

Summary — Yaskawa error code A910

Meaning: A910 is an overload warning for the servomotor (motor overload detection / overload warning). It indicates the motor has experienced an overcurrent/overload condition long enough to trigger the warning (designed to prevent motor overheating). yaskawa error code a910

Severity: Warning (A.910) — not the same as the A.720 continuous-overload alarm or A.710 instantaneous overload alarm; A910 is a configurable overload detection timing/warning level.

Common causes:

Mechanical binding, increased friction, or jam in the load. Excessive torque demand from the process (cutting, sudden heavy load, stall). Incorrect motor selection or undersized motor for the application. Incorrect parameter settings (overload detection timing, motor current/torque limits). Electrical issues causing increased motor current. The Yaskawa error code A

Quick troubleshooting steps (practical, in order):

Stop motion and clear/reset the warning per your SERVOPACK operator or controller. Inspect load and mechanical couplings for binding, misalignment, or obstruction; free any jam. Check for overheating of motor or amplifier; allow to cool and verify cooling fans/ventilation. Measure motor current during operation — compare to rated current. Verify motor and drive ratings match the application and that wiring connections are secure. Review relevant parameters: overload detection timing (model-dependent Pn or setting), continuous/instantaneous overload limits; increase warning detection time only if process legitimately has short spikes. If using external encoders/feedback or closed-loop options, confirm no feedback faults are causing torque hunting. If fault persists after mechanical/electrical checks, power-cycle the SERVOPACK; if it recurs, contact Yaskawa support or replace the SERVOPACK if hardware fault suspected.

Where to find exact details:

Consult the specific SERVOPACK/product manual (e.g., SGD7S / Sigma series) for the A.910 entry and parameter names (motor overload detection level and detection timing). The manual describes which parameters control detection level and timing and how to interpret related A.720/A.710 alarms.

If you want, tell me your servopack model (e.g., SGD7S, Sigma-7, Sigma-5) and I’ll extract the exact parameter names and recommended default values for that model. Related searches invoked for further exploration.