(e.g., constantly at idle, during rapid acceleration, or under heavy load)?
The integrated mechanical holding brake fails to fully release, causing the motor to fight its own internal brake mechanism.
Clean and lubricate all ball screws, linear guides, and bearings. Step 2: Inspect Motor Cables and Connections
: Power cycle the controller. If the error persists, the CPU board may need replacement by a Yaskawa representative . Table 1 - Yaskawa yaskawa error code a910 exclusive
Once you clear the A.910 error, implementing a few preventive measures will ensure it doesn't return:
In one repair case, a customer reported a Yaskawa Servopack (SGDV-120A01AY101AA) was displaying error codes A.710 and A.910 with highly unstable motor behavior.
If the drive has recently experienced a minor fault that was cleared but not fully reset, the drive may remain in a "Trip" state. Step 2: Inspect Motor Cables and Connections :
Improperly crimped connections, broken shielding, or deteriorated power/encoder cables create erratic contact resistance. If the SERVOPACK cannot read encoder positioning or phases accurately, it over-compensates by pushing extra current into the motor windings. 4. Parametric Mismatch (Pn52B Misconfiguration)
The Yaskawa error code is an Overload Warning for servo drives , typically found in the Sigma-3 , Sigma-5 , and Sigma-7 series . It serves as a precursor to more severe "hard" overload alarms like A.710 (instantaneous maximum load) or A.720 (continuous maximum load). A.910 Overload Warning Summary
: Another exclusive parameter known to Yaskawa experts is Pn008.2 . This setting allows you to enable or disable the detection of certain warnings, including A.910. While setting Pn008.2 to 1 will mask many warnings, it should never be used as a solution, as it would conceal the very information needed for proper diagnostics. If the drive has recently experienced a minor
: If you change Pn52B to a higher value to eliminate nuisance A.910 warnings, you are reducing the safety margin for your motor. Increasing Pn52B too much may prevent the A.910 warning from appearing at all, potentially leading to an unexpected A.710 alarm and machine downtime. Adjust this parameter conservatively and with a full understanding of your load cycle.
Yaskawa drives feature a "Trial Operation" or "Tuning" mode used for auto-tuning the motor.