Fault 52 Category 2 explosion protection function

Subfault: 52.1

Description: Startup error

 

Response: Output stage inhibit

Cause

Measure

One or several parameters of the explosion protection function have been changed.

Before activating the function, take the explosion protection function into operation.

Subfault: 52.2

Description: Invalid function activated

 

Response: Output stage inhibit

Cause

Measure

The explosion protection function and the "standstill current" function are not allowed to be active at the same time.

Disable the "standstill current" function.

Subfault: 52.3

Description: Nominal inverter current too large

 

Response: Output stage inhibit

Cause

Measure

Ratio of nominal inverter current and nominal motor current too large.

Check the assignment of motor and inverter.

Subfault: 52.4

Description: Parameterization of current limit characteristic faulty

 

Response: Output stage inhibit

Cause

Measure

Error while setting parameters for current limit characteristic.

– Perform startup again.

– If the fault occurs repeatedly, contact SEW‑EURODRIVE Service.

Subfault: 52.5

Description: Time duration exceeded for f < 5 Hz

 

Response: Emergency stop + output stage inhibit

Cause

Measure

The rotating field frequency is not allowed to fall below 5 Hz for longer than 60 sec. This timespan was exceeded.

– Check the project planning.

– Ensure that it does not operate longer below 5 Hz.

– Check the behavior in idle state. For instance, activate the "FCB 01 output stage inhibit" drive function for position hold control on the device.