Applicable Systems
AC500
AC590
ACS580
ACS880
Symptoms
The drive trips. The display shows F0012 indicating an overload condition. The drive output current has exceeded the rated overload limit for an extended period.
Possible Causes
- Mechanical load exceeds the motor and drive rated capacity
- Motor undersized for the application
- Drive operating in the overload region for too long
- Mechanical jam or binding in the driven equipment
Troubleshooting Steps
- Step 1: Check the mechanical load for jams, binding, or excessive friction
Driven equipment rotates freely without excessive friction - Step 2: Verify the motor and drive ratings match the application load requirements
Motor power and drive current rating are adequate for the load - Step 3: Measure the motor current during normal operation
Current is within the motor rated full-load current - Step 4: If the load is genuinely too high, increase motor and drive capacity
System operates within rated limits under all conditions
How to Reset
To reset: 1) Remove the overload condition. 2) Allow the motor to cool if it has overheated. 3) Press RESET. Caution: Repeated overload trips can cause motor insulation damage. Ensure the system is properly sized.
Frequently Asked Questions
- Q: What is the overload capacity of an ABB drive?
ABB ACS880 drives typically have 150% overload for 1 minute and 110% overload for continuous operation, but the exact ratings depend on the drive frame size and duty class.
- Q: How do I calculate the required drive and motor size?
Determine the load torque and speed requirements, calculate the required motor power, then select a drive with adequate current capacity for the motor and the expected overload conditions. Add a 10-20% safety margin.
Source: ABB ACS880 Firmware Manual, 2023
Category: PLC & VFD