Here’s a quick guide to the (often seen on Yaskawa V1000, J1000, GA700, GA800, and other A1000-series drives):
, most notably seen across the Sigma-5, Sigma-7, and Sigma-X series servo drives. Unlike critical hard faults that instantly drop the main circuit power to protect components, the A.910 code behaves primarily as an early-stage warning indicator. It explicitly signals that the servo motor is operating dangerously close to its continuous thermal overload limit or has exceeded the parameters set for safe thermal accumulation over time.
: Rapid acceleration/deceleration cycles or running the machine past its rated cycle duty limits the thermal dissipation window.
An overload warning triggers when the servo drive detects that the current drawn by the motor exceeds its continuous thermal and electrical limits over a given period. Five primary factors cause this anomaly:
Bad wiring creates high-resistance contacts or phase issues. yaskawa error code a910 link
). It serves as a preventative alert, triggering before a critical overload alarm (A.710 or A.720) occurs to protect the motor and drive from damage.
: Excessive load on the motor due to mechanical friction, jamming, or binding in the machinery. Incorrect Wiring
If using a serial converter unit (for linear motors), reseat the converter modules. 2. Verify Wiring and Grounding
| Parameter | Description | Role in A910 | | :--- | :--- | :--- | | | Electronic Thermal Selection | Enables/Disables the protection feature that generates A910. | | L3-02 | Motor Rated Current | Critical. Sets the baseline for the overload calculation. Must match the motor nameplate. | | L3-03 | Electronic Thermal Time | Sets how long the motor can sustain an overload before the alarm/trip occurs. | | L3-04 | Overload Warning Level | Sets the percentage of current that specifically triggers the A910 warning (default is usually very close to the trip point). | | U1-03 | Monitor: Output Current | Used for real-time diagnostics to verify if the motor is actually drawing too many amps. | Here’s a quick guide to the (often seen
To effectively resolve the A.910 warning, begin with a systematic process to isolate and rectify the root cause.
The drive has detected that the motor is approaching its overload protection limit.
The converter unit, which translates encoder signals into a serial format for the SERVOPACK, is malfunctioning.
: Optimize your acceleration curves ( S-curves ) in the host controller software to smooth out instantaneous current spikes. decreasing the maximum speed reference
Unlike a "Fault" which requires a manual reset, an like A910 often clears itself once the underlying cause is resolved (i.e., when the link is restored). However, if your drive is configured to "Fault on Communication Loss," you may need to: Restore the link.
Check the motor's actual operating characteristics using SigmaWin+ Engineering Software . Optimize the motion profile by reducing peak acceleration times, decreasing the maximum speed reference, or extending dwell times between movements. If the application demands the current throughput, upgrade to a larger capacity motor and SERVOPACK. 3. Faulty or High-Resistance Wiring
The overload warning level parameter ( Pn52B ) is set too low for normal, safe spikes in operation. Step-by-Step Troubleshooting Process
Here’s a quick guide to the (often seen on Yaskawa V1000, J1000, GA700, GA800, and other A1000-series drives):
, most notably seen across the Sigma-5, Sigma-7, and Sigma-X series servo drives. Unlike critical hard faults that instantly drop the main circuit power to protect components, the A.910 code behaves primarily as an early-stage warning indicator. It explicitly signals that the servo motor is operating dangerously close to its continuous thermal overload limit or has exceeded the parameters set for safe thermal accumulation over time.
: Rapid acceleration/deceleration cycles or running the machine past its rated cycle duty limits the thermal dissipation window.
An overload warning triggers when the servo drive detects that the current drawn by the motor exceeds its continuous thermal and electrical limits over a given period. Five primary factors cause this anomaly:
Bad wiring creates high-resistance contacts or phase issues.
). It serves as a preventative alert, triggering before a critical overload alarm (A.710 or A.720) occurs to protect the motor and drive from damage.
: Excessive load on the motor due to mechanical friction, jamming, or binding in the machinery. Incorrect Wiring
If using a serial converter unit (for linear motors), reseat the converter modules. 2. Verify Wiring and Grounding
| Parameter | Description | Role in A910 | | :--- | :--- | :--- | | | Electronic Thermal Selection | Enables/Disables the protection feature that generates A910. | | L3-02 | Motor Rated Current | Critical. Sets the baseline for the overload calculation. Must match the motor nameplate. | | L3-03 | Electronic Thermal Time | Sets how long the motor can sustain an overload before the alarm/trip occurs. | | L3-04 | Overload Warning Level | Sets the percentage of current that specifically triggers the A910 warning (default is usually very close to the trip point). | | U1-03 | Monitor: Output Current | Used for real-time diagnostics to verify if the motor is actually drawing too many amps. |
To effectively resolve the A.910 warning, begin with a systematic process to isolate and rectify the root cause.
The drive has detected that the motor is approaching its overload protection limit.
The converter unit, which translates encoder signals into a serial format for the SERVOPACK, is malfunctioning.
: Optimize your acceleration curves ( S-curves ) in the host controller software to smooth out instantaneous current spikes.
Unlike a "Fault" which requires a manual reset, an like A910 often clears itself once the underlying cause is resolved (i.e., when the link is restored). However, if your drive is configured to "Fault on Communication Loss," you may need to: Restore the link.
Check the motor's actual operating characteristics using SigmaWin+ Engineering Software . Optimize the motion profile by reducing peak acceleration times, decreasing the maximum speed reference, or extending dwell times between movements. If the application demands the current throughput, upgrade to a larger capacity motor and SERVOPACK. 3. Faulty or High-Resistance Wiring
The overload warning level parameter ( Pn52B ) is set too low for normal, safe spikes in operation. Step-by-Step Troubleshooting Process