08/2005 Overview of Alarms
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© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
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)
Program Con-
tinuation:
Clear alarm with the RESET key in all channels. Restart part program.
300768 Axis %1 drive %2 numerator bandwidth > double blocking frequency
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: 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).
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: Please inform the authorized personnel/service department.
The bandwidth numerator must be less than twice the blocking frequency.
• Current setpoint filter 1:
• MD 1212 <= 2 * MD 1210
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