ALARM 13

Over current

Danfoss · VLT HVAC Drive High Power

What does ALARM 13 mean?

The inverter peak current limit (approximately 200% of rated current) has been exceeded. The warning lasts about 1.5 seconds before the frequency converter trips and issues an alarm. This is often caused by shock loading, rapid acceleration of high-inertia loads, or can occur after kinetic back-up. An overcurrent condition can rapidly damage the inverter's power components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Confirm that the motor data in parameters 1-20 to 1-25 is correctly entered.

Source: Danfoss VLT HVAC Drive High Power
View Official PDF