Siemens SINUMERIK 840D sl Series Diagnostics Manual page 874

Overview of Alarms
- Channel not ready.
Remedy: Please inform the authorized personnel/service department. Enter a value greater than
zero in the machine data MD 1161: $MD_FIXED_LINK_VOLTAGE (DC link fixed volt-
age), or order a new hardware version of the control module.
Program Con- Clear alarm with the RESET key in all channels. Restart part program.
tinuation:
300766
Axis %1 drive %2 blocking frequency > Shannon frequency
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The blocking frequency of a speed setpoint filter is greater than the Shannon sampling
frequency from the sampling theorem.
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.
Current setpoint filter:
The value in MD 1210, 1213,1216 or 1219 must be smaller than the inverse value of two
current controller cycles MD 1000: $MD_CURRENTCTRL_CYCLE_TIME (current con-
troller cycle) (1/2*MD 1000 *31.25 microsec).
Speciality with SINUMERIK 810D:
Current setpoint filters 2,3 and 4 are calculated in the speed controller cycle. This means
that MD 1213, 1216 or 1219 must be smaller than the inverse value of two speed control-
ler cycles MD 1001: $MD_SPEEDCTRL_CYCLE_TIME (speed controller cycle) (1/2*MD
1001 *31.25 microsec).
Program Con- Clear alarm with the RESET key in all channels. Restart part program.
tinuation:
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 fre-
quency from the sampling theorem.
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 natural frequency in Hz of a speed setpoint filter must be less than the reciprocal
value of two speed controller cycles.
2-874
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005