Siemens SINUMERIK 840D Diagnostics Manual page 592

1 Alarms
Reactions:
Remedy:
Program Continuation:
300768
Parameters:
Definitions:
1-592
- 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.
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 fre-
quency 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 fre-
quency 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)
Clear alarm with the RESET key in all channels. Restart part program.
Axis %1 drive %2 numerator bandwidth > double blocking frequency
%1 = NC axis number
%2 = Drive number
The bandwidth numerator of a current or speed setpoint filter is greater than twice the
blocking frequency.
This error message is only issued for the general bandstop filter if:
• Speed setpoint filter 1:
• MD 1516 > 0.0 or
• MD 1520 <> 100.0
• Speed setpoint filter 2:
• MD 1519 > 0.0 or
• MD 1521 <> 100.0
• Current setpoint filter 1:
• MD 1212 > 0.0
• Current setpoint filter 2:
• MD 1215 > 0.0
• Current setpoint filter 3:
• MD 1218 > 0.0
• Current setpoint filter 4:
• MD 1221 > 0.0
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY
(channel not ready).
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA), 10.04 Edition
10.04