To resolve A910, you must understand these specific Yaskawa parameters:
By three in the morning, the conveyor flowed again. Lin watched packages slip smoothly onto the pallet, and for a moment the whole factory felt like it had forgiven her. She logged the incident: A910—intermittent link loss due to HVAC network surge; temporary QoS fix; recommended permanent VLAN segmentation and shielded cabling. Old habits die hard; she wrote the note in her neatest hand.
In simple terms, this error occurs when the Yaskawa VFD (Variable Frequency Drive) attempts to start the motor, but the speed sensor (Encoder or PG) detects that the motor is already moving—or moving backward—faster than the allowable threshold. It can also happen if the drive commands a stop, but the motor drifts due to external forces.
To safely clear the A.910 warning and safeguard your machine hardware from permanent thermal degradation, execute these technical troubleshooting protocols: yaskawa error code a910 link
If using V/f Control (no auto-tuning):
Sometimes the issue is not a physical failure but an operational mismatch.
Therefore, always focus the troubleshooting effort on the mechanical load, electrical wiring, and tuning parameters. To resolve A910, you must understand these specific
: High ambient temperature within the SERVOPACK panel (exceeding 55°C). Parameter Settings : The overload warning level ( ) is set too low for the current application. Recommended Troubleshooting Steps Inspect Mechanics
, most notably seen across the Sigma-5, Sigma-7, and Sigma-X series servo drives. Unlike critical hard faults that instantly drop the main circuit power to protect components, the A.910 code behaves primarily as an early-stage warning indicator. It explicitly signals that the servo motor is operating dangerously close to its continuous thermal overload limit or has exceeded the parameters set for safe thermal accumulation over time.
High-voltage lines running too close to communication cables can cause electromagnetic interference, dropping the signal. Old habits die hard; she wrote the note in her neatest hand
The is an important warning that prevents a full system fault. By checking mechanical loads, verifying wiring, and monitoring thermal conditions, you can usually resolve this issue and avoid downtime. If the error persists after checking all mechanical and electrical factors, the issue may be a faulty Servo Pack.
) or restricted air circulation can lead to premature overload detection. Improve panel cooling or reduce the carrier frequency.
Worn ball screws, seized linear bearings, lack of lubrication, or physical collisions increase the mechanical friction. The motor must draw more current to overcome this resistance, driving up its internal thermal model.
: Reduce the acceleration/deceleration rates if possible.
Ensure the SERVOPACK has adequate ventilation and that the internal cabinet temperature is maintained at safe levels. Reference for Related Alarms A.910 Overload Warning Pre-alarm (Warning) A.710 Instantaneous Overload Critical Alarm A.720 Continuous Overload Critical Alarm