Any added friction in the mechanical transmission forces the servomotor to draw more current to execute its programmed profile. Common mechanical failure points include bound ball screws, misaligned linear guide rails, worn gearboxes, and failed bearings.
This article provides a comprehensive overview of what the A910 error means, why it occurs, and how to troubleshoot and fix it. What is Yaskawa Error Code A910 (Exclusive Error)?
Does the A.910 warning appear or during a specific motion in the cycle?
When the A.910 code appears on your SERVOPACK, follow this step-by-step diagnostic process to isolate and resolve the issue: Step 1: Check the Mechanical System
Lack of lubrication on linear paths or bearings significantly increases the torque required to sustain motion. 2. Aggressive Motion Profiles yaskawa error code a910 exclusive
[A910 Warning Triggered] ──> [Address Root Cause / Let Drive Cool] ──> [Execute Clear Command] ──> [Normal Operation] A.910 fault in Yaskawa Sigma 7 servo drive - Click2Electro
Check that the input signals for functions such as and Reverse Run Prohibit (N-OT) are not both active.
If you have a specific Yaskawa model (e.g., GA800, A1000, V1000), reply with the model number and the load type (fan, pump, conveyor, crane) for a tailored parameter list.
Technically, A.910 is a , not an emergency stop alarm. However, if this warning is ignored and operation continues without intervention, a much more severe overload alarm (A.710 or A.720) will eventually occur, leading to unexpected downtime. Any added friction in the mechanical transmission forces
of the rated thermal load. Ensure it has not been inadvertently altered to a hypersensitive value.
(turn the drive off and then on again) to ensure the settings take effect. Attempt to reset the alarm. Summary Table: Typical Conflict Scenarios Possible Cause A910 after parameter change Two incompatible functions set. Check parameter settings (e.g., Pn000). A910 during operation PLC sent conflicting command. Review PLC code/network signals. A910 upon power up Improper parameter selection. Reset to default or check config. Conclusion
Intermittent contact or high-resistance paths on the motor power lines (U, V, W) or the encoder feedback lines distort the current delivery. This distortion forces the SERVOPACK to compensate by increasing the output current, accelerating the thermal modeling counter.
Clear away any dust, debris, or blockages around the motor's heatsink or ventilation fins. Measure the ambient temperature of the cabinet. Step 5: Adjust Parameter Settings What is Yaskawa Error Code A910 (Exclusive Error)
: If this warning is frequent in a new setup, the motor may be undersized for the load it is carrying.
Exceeded tight overload protection profile or mismatched motor capacity. Pn52B (Overload Warning Level) Root Causes Behind the A.910 Warning
Check parameter , which sets the Overload Warning Level. By default, it may be set conservatively (e.g., to trigger early). Adjusting this value can eliminate nuisance warnings, but only do so if you are confident that the motor is running within safe thermal limits. When to Seek Professional Repair
the machine, it often means the drive "remembers" it was in an overload state before it was shut down and is warning you that the motor hasn't had enough time to cool down yet. 【安川電機】e-メカサイト If you are using series drives, you can specifically look at parameter