Yaskawa Error Code A910 Exclusive
The Yaskawa A.910 error code is an Overload Warning on Yaskawa Sigma-series servo drives (specifically Sigma-3, Sigma-5, and Sigma-7). It is a warning, not a hard fault, meaning the drive is detecting that it is operating near its thermal limit and is about to trigger a hard "A.710" or "A.720" overload trip. 🛠️ Common Causes
Mechanical Bind or Jam: Excessive load caused by friction, worn bearings, or physical obstructions in the machine.
Poor Wiring/Contact: Faulty or loose connections in the motor or encoder cables can cause irregular current spikes.
Under-sized Motor: The operating conditions (torque or speed) exceed the rated capacity of the servomotor.
High Ambient Temperature: If the control panel temperature exceeds 55°C (131°F), the drive cannot dissipate heat effectively. yaskawa error code a910 exclusive
Incorrect Warning Levels: The parameter Pn52B (Overload Warning Level) may be set too low for the intended application. 🔍 Troubleshooting Steps 1 Check Mechanicals
Disconnect the motor from the load and rotate the shaft by hand to check for binding. 2 Verify Wiring
Inspect U, V, and W power leads and the encoder cable for secure seating and damage. 3 Monitor Torque
Use SigmaWin+ to monitor the "Effective Torque Reference." It should ideally stay below 100%. 4 Check Environment The Yaskawa A
Ensure cabinet fans are working and internal temperatures are below 55°C. 5 Adjust Pn52B
If the load is naturally high but safe, increase the value of parameter Pn52B to delay the warning. 💡 Pro Tip: Is it a CPU Error?
If you are seeing 0910 on a Yaskawa Motoman Robot controller (like the Go to product viewer dialog for this item.
), this is a CPU Error rather than a drive overload. This usually indicates a failure in the CPU unit or communication between boards and may require a hardware replacement or software re-installation. To help narrow this down, could you tell me: What model of Yaskawa hardware are you using (e.g., Sigma-7 drive Go to product viewer dialog for this item. , Motoman robot)? Error A910 — Exclusive indicates that the Yaskawa
Does the error happen immediately at power-up or only during movement? Have there been any recent mechanical changes or crashes? FS100 ALARM CODE 0910 CPU ERROR (CPU-201R)
Error A910 — Exclusive indicates that the Yaskawa drive or controller has entered an exclusive mode or that exclusive access to a resource (I/O, network, or parameter set) is locked by another device or session. This prevents other devices/sessions from controlling or modifying the resource until exclusivity is released.
Unlike a standard "CALL" or "BUS" error, A910 implies the drive sees the operator physically connected, but the data frame from the operator is corrupt or the timing is off by microseconds. It is an exclusive club of faults that straddle the line between "loose wire" and "imminent board failure."