Siemens SINUMERIK 840D sl Series Diagnostics Manual page 868

Overview of Alarms
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
Remedy: Please inform the authorized personnel/service department. Set a smaller value for the
proportional gain in MD 1407: $MD_SPEEDCTRL_GAIN_1 (P gain of speed controller) or
MD 1408: $MD_SPEEDCTRL_GAIN_2 (P gain of upper adaption speed). (Allow for the
active speed controller adaptation.)
Program Con- Clear alarm with the RESET key in all channels. Restart part program.
tinuation:
300752
Axis %1 drive %2 blocking frequency of setpoint current filter too high
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The blocking frequency of a current setpoint filter is greater than the reciprocal value of 2
current controller cycles (violation of the sampling theorem). (1/2*MD 1000*31.25
microsec)
Reactions: - NC not ready.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
Remedy: The value of machine data MD 1210: $MD_CURRENT_FILTER_1_SUPPR_FREQ
(blocking frequency of current setpoint filter 1) or MD 1213:
$MD_CURRENT_FILTER_2_SUPPR_FREQ (blocking frequency of current setpoint filter
2) or MD 1216: $MD_CURRENT_FILTER_3_SUPPR_FREQ (blocking frequency of cur-
rent setpoint filter 3) or MD 1219: $MD_CURRENT_FILTER_4_SUPPR_FREQ (blocking
frequency of current setpoint filter 4) must be less than the reciprocal value of two current
controller cycles MD 1000: $MD_CURRCTRL_CYCLE_TIME (current controller cycle).
(1/2*MD 1000*31.25 microsec)
Program Con- Clear alarm with the RESET key in all channels. Restart part program.
tinuation:
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 identi-
fication current) that is smaller than the minimum value permissible for the motor.
Reactions: - NC not ready.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005