Overcurrent

What does 04AC0000 hex mean?

The current flowing through the converter exceeded the specified value. This fault indicates an excessive current draw, often caused by motor issues, wiring faults, or drive malfunction, posing a risk of component damage.

• A short-circuit, line-to-ground fault, contact failure, or insulation failure occurred on the U, V, or W motor line.
• The Servo Drive failed.
• The relay for the dynamic brake has been welded due to frequent Servo ON/OFF operations.
• Motor windings are burned out.
• The Servomotor is not suitable for the Servo Drive.
• The command input timing is the same as or earlier than the Servo ON timing.

Click steps to track your progress.

1. 1

   Inspect all power wiring (input and output) to the drive and motor for loose connections, damage, or signs of overheating, paying close attention to the motor cable.

2. 2

   Verify the mechanical load on the motor is not excessive or binding, ensuring the motor shaft can rotate freely without obstruction.

3. 3

   Measure motor winding resistance phase-to-phase and insulation resistance to ground (using a megohmmeter) to detect potential motor winding shorts or insulation degradation.

4. 4

   Check drive parameters for correct motor nameplate data, current limits, and acceleration/deceleration times against the machine's specified configuration.