Sinumerik Alarm 300753 Axis %1 drive %2 rotor position identification current less than minimal value

Sinumerik Alarm 300753 Axis %1 drive %2 rotor position identification current less than minimal value

Parameters:
%1 = NC axis number
%2 = Drive number

Definitions:
The current set in MD1019: $MD_CURRENT_ROTORPOS_IDENT (rotor position identification current) that is smaller than the minimum value permissible for the motor.

Reactions:
– NC not ready.
– Channel not ready.
– Channel not ready.
– NC Stop on alarm.
– NC Start disable in this channel.
– The NC switches to follow-up mode.
– Alarm display.
– Interface signals are set.

Remedy:
The current set in MD1019: $MD_CURRENT_ROTORPOS_IDENT (rotor position identification current) that is not smaller the permissible minimum value (40% for non-Siemens synchronous linear motor (SLM)). Possibly, a larger power section must be used. If allowed with the motor used, hide the error by setting bit 5 in MD 1012: $MD_FUNCTION_SWITCH (function switch). Notice: Motors with a low saturation response (e.g. 1FN3 linear motors) might react to very low identification currents with misorientation. This can lead to uncontrolled movements.

Program Continuation:
Clear alarm with the RESET key in all channels. Restart part program.