: Verify the servomotor and encoder are correctly wired.
Loose or high-resistance contacts in the main motor power cable or encoder feedback harness mimic overload states due to phase imbalance or signal noise.
Ensure that your communication cables are and that the shields are properly grounded. Avoid running communication lines parallel to motor output cables or high-voltage AC lines. If they must cross, they should do so at a 90-degree angle. 4. Review Drive Parameters
If the A910 moves to the new machine, the issue is with the motor or cable. yaskawa error code a910 link
If you are building a monitoring or control interface, consider implementing the following features: :
[A.910 Warning Triggered] │ ▼ 1. Isolate the Mechanics ──► (Spin motor manually; check for binding) │ ▼ 2. Check Parameters ──────► (Verify Pn52B Overload Warning Level) │ ▼ 3. Inspect Hardware ──────► (Verify 55°C max panel temp & solid wiring) Step 1: Isolate the Mechanical Load
The alarm threshold parameter Pn52B may be set too low. If the factory default is modified down prematurely, normal operation spike currents trigger the warning. 5. Hardware Degradation within the SERVOPACK : Verify the servomotor and encoder are correctly wired
Before tearing apart your control cabinet, consider these common culprits:
: Once the physical cause is removed, use the digital operator or SigmaWin+ software to clear the alarm. If the code persists after a power cycle, the SERVOPACK may require replacement.
(such as Sigma-7, Sigma-5, and Sigma-3). It is not a terminal fault but a proactive alert indicating that the motor is operating near its thermal limit and is at risk of triggering a full overload alarm (A.710 or A.720). Understanding the A.910 Warning Avoid running communication lines parallel to motor output
To safely clear the A.910 warning and safeguard your machine hardware from permanent thermal degradation, execute these technical troubleshooting protocols:
If physical damage is suspected or if the cable is old, replacing the encoder cable is the fastest way to rule out wiring issues. Even if a cable looks intact, internal wire breaks can cause intermittent A910 faults. 4. Swap the SERVOPACK and Motor
Motor continuous torque exceeds the rated curve or reaches user-set Pn52B parameters
: Incorrect or loose wiring at the motor or encoder can trigger this warning.
[Normal Operation] ──> [RMS Torque Exceeds Rating] ──> [A.910 Overload Warning] ──> [A.710/A.720 Hard Fault] Key Parameter Relationships