How to Troubleshoot “ERR10” Fault on an Inverter?
The “ERR10” fault code on an inverter typically indicates an overcurrent fault—one of the most common issues encountered during inverter operation. When this error occurs, follow these steps to troubleshoot and resolve the problem:
1. Stop the Machine Immediately for Inspection
- First, cut off the inverter’s power supply. Wait a few minutes, then restart it to check if the fault is occasional (i.e., a one-time glitch).
2. Inspect the Motor and Load
- Check if the motor is running under overload or if the load has increased suddenly.
- Verify whether the motor windings are short-circuited or grounded; use a multimeter to measure the motor’s winding resistance for confirmation.
- Examine if mechanical transmission components are jammed, as this can cause the motor to stall (and trigger the overcurrent fault).
3. Check Wiring Connections
- Inspect the wires connecting the inverter to the motor for looseness, short circuits, or unintended grounding.
- Check if terminal blocks are oxidized or have poor contact, as both issues can disrupt current flow and trigger false faults.
4. Verify Parameter Settings
- Confirm that the inverter’s parameters match the motor’s specifications, such as the motor’s rated current and rated voltage. Mismatched parameters often lead to overcurrent.
- Check if the acceleration time is set too short. If so, extend the acceleration time parameter appropriately—rapid acceleration can overload the motor and trigger ERR10.
5. Inspect the External Environment
- Check if the ambient temperature around the inverter is too high, if its heat dissipation system is functioning effectively, and if the cooling fan is working properly. Overheating can impair current regulation and cause false overcurrent alerts.
- Check for electromagnetic interference (EMI) in the area, as EMI can disrupt the inverter’s internal circuits and lead to incorrect fault codes.
6. Troubleshoot Internal Hardware Faults
- If all the above checks show no issues, the fault is likely due to internal hardware problems in the inverter—such as a faulty current detection circuit or a damaged power module. In this case, contact professional maintenance personnel to repair or replace the defective components.
Note: The specific meaning and troubleshooting methods for the “ERR10” fault may vary slightly across different inverter brands. For more targeted guidance, refer to the inverter’s official user manual. If you cannot resolve the issue independently, contact the manufacturer’s technical support or certified maintenance professionals promptly.