Yaskawa Error Code A910 Exclusive Jun 2026

A: If the motor is not rotating, the most likely cause is a mechanical bind. The servo drive is outputting current to try and turn the motor, but the rotor can't move. This could be a locked brake, a seized gearbox, or a mechanical obstruction in the load. Check the motor brake and try to rotate the output shaft by hand.

Unlike general software or parameter-setting errors (e.g., oC, oH, or bUS errors), A910 is because:

If troubleshooting allows, temporarily remove the option card to see if the A910 code disappears. If it does, the option card or its network traffic is the culprit. Step 3: Mitigate Electrical Noise (EMI/RFI)

On a Yaskawa Sigma-7 servo drive, the specifically indicates an Overload Warning . This code is exclusive in the sense that it acts as a preemptive alert, appearing before the drive triggers a more severe, machine-stopping alarm like A.710 or A.720. What is Happening? yaskawa error code a910 exclusive

Ambient temperatures inside the electrical enclosure exceed 55°C , drastically lowering the SERVOPACK’s thermal dissipation efficiency. 🛠️ Step-by-Step Troubleshooting and Resolution

Try moving the axis manually. Is it unusually stiff?

What are you currently using (e.g., Sigma-5, Sigma-7, or an inverter drive like the A1000)? A: If the motor is not rotating, the

This comprehensive technical guide explains the underlying engineering behind the A.910 warning, addresses its operational causes across different Yaskawa generations, and provides step-by-step diagnostic and resolution pathways. Understanding the A.910 Overload Warning Architecture

Ensure all connections at the terminals are tight. Check the encoder cable for any signs of damage or interference. Poor encoder signals can cause the drive to "hunt" for position, increasing the current draw and triggering an overload. 3. Adjust Operating Conditions

The A.910 warning is triggered by one of these common system stresses: Mechanical Binding or Jamming: Check the motor brake and try to rotate

In some cases, the mechanical system is perfectly fine, but the warning threshold is too sensitive for your specific application.

Disconnect the motor from the load and rotate the shaft by hand to check for binding. Verify Wiring

Exceeded tight overload protection profile or mismatched motor capacity. Pn52B (Overload Warning Level) Root Causes Behind the A.910 Warning

Rarely, a firmware bug in the drive’s watchdog timer triggers A910 when no physical fault exists. This exclusively happens in:

Yaskawa Error Code A.910 Overload Warning typically found on Yaskawa Sigma-7 (and occasionally Sigma-5) servo drives. Unlike hard faults that immediately shut down the system, this code acts as an early warning alert. It notifies operators that the motor has been operating continuously at a torque level exceeding its rating, putting it on the verge of a critical overload trip (such as an A.710 or A.720 overload alarm).