Functional principle

The motor current is accumulated in an internal memory over the course of time. The inverter goes to fault state as soon as the thermal limit is exceeded (I.t-trP).

Once the output current of the inverter is less than the set rated motor current, the internal memory is decremented depending on the output current.

• When P4-17 is disabled, thermal memory retention is reset upon shutdown or power loss.
• When P4-17 is enabled, thermal memory retention is maintained upon shutdown or power loss.