Sinumerik Alarm 300767 Axis %1 drive %2 natural frequency > Shannon frequency
Parameters:
%1 = NC axis number
%2 = Drive number
Definitions:
The natural frequency of a speed setpoint filter is greater than the Shannon sampling frequency from the sampling theorem. The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not ready).
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:
Please inform the authorized personnel/service department. The natural frequency in Hz of a speed setpoint filter must be less than the reciprocal value of two speed controller cycles. Speed setpoint filter 1: MD 1520 * 0.01 * MD 1514 < 1 / ( 2 * MD 1001 * 31.25 microsec) Speed setpoint filter 2: MD 1521 * 0.01 * MD 1517 < 1 / ( 2 * MD 1001 * 31.25 microsec)• Modify MD 1520: $MD_SPEED_FILTER_1_BS_FREQ (bandstop filter natural frequency speed setpoint filter 1)• Modify MD 1514: $MD_SPEED_FILTER_1_SUPPR_FREQ (suppression frequency speed setpoint filter 1) 1)• Modify MD 1521: $MD_SPEED_FILTER_2_BS_FREQ (bandstop filter natural frequency speed setpoint filter 2)• Modify MD 1517: $MD_SPEED_FILTER_2_SUPPR_FREQ (suppression frequency speed setpoint filter 2) 2)• Modify MD 1001: $MD_SPEEDCTRL_CYCLE_TIME (speed controller cycle)Program Continuation:
Clear alarm with the RESET key in all channels. Restart part program.
References
- Siemens Diagnostics Guide by Siemens