Overcurrent
Danfoss · VLT HVAC Basic FC 101
What does 13 mean?
The inverter's peak current limit has been exceeded, causing the frequency converter to trip into an alarm state after approximately 1.5 seconds of warning. This typically indicates a sudden increase in motor load, such as shock loading, a jam, or excessively fast acceleration of high-inertia loads. Persistent overcurrents can severely stress and damage the frequency converter's power components and the motor.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Adjust the drive's ramp-up/ramp-down times (acceleration/deceleration) in parameters to reduce current spikes during starting or stopping, especially for high inertia loads.
- 4
Examine the motor and connected machinery for any signs of mechanical stress, damage, or sudden load changes that could cause current surges.