Siemens SINUMERIK 840D Series Diagnostics Manual page 516

1 Alarms
Remedy:
Program Continuation:
300766
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
300767
Parameters:
Definitions:
Reactions:
Remedy:
1-516
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.
Clear alarm with the RESET key in all channels. Restart part program.
Axis %1 drive %2 blocking frequency > Shannon frequency
%1 = NC axis number
%2 = Drive number
The blocking frequency of a speed setpoint filter is greater than the Shannon sampling
frequency from the sampling theorem.
- 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.
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).
Clear alarm with the RESET key in all channels. Restart part program.
Axis %1 drive %2 natural frequency > Shannon frequency
%1 = NC axis number
%2 = Drive number
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).
- 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.
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)
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
 Siemens AG, 2002. All rights reserved
11.02