Siemens Sinumerik 840C Diagnostics Manual page 220

1 Alarms
1.5.1 Alarm description
300765 No link measurement possible
300865
Scan
Cyclic
Effect
for MSD:
S
Pulse suppression, motor runs down
S
SIMODRIVE_READY and DRIVE_READY are cancelled.
S
Reset error
for FDD:
S
Controllers are disabled, motor is braked
S
SIMODRIVE_READY and DRIVE_READY are cancelled.
S
Reset error
Response via MD 1613.0 can be configured as from drive SW 2.
Alarm output can be activated via MD 1012.4 as from V. 5.2 (611D: SW 3).
S
MD 1012.4 = 0: 300765
S
MD 1012.4 = 1: 300865
Explanation
If the fixed voltage MD 1161 is equal to zero, no d.c. link measurement is possible because of the incorrect hard-
ware version.
Remedy
In the machine data fixed voltage MD 1161, enter a value greater than zero or order new hardware version (hard-
ware components: drive control with the Order No. 6SN1 118–0Dx1x–0AA0).
Note
Applies as from SW 4
300766 Blocking frequency greater than Shannon frequency
Scan
Cyclic after control power up
Effect
With MSD:
S
Pulse reset, motor coasts down
S
SIMODRIVE_READY and DRIVE_READY are reset.
S
Reset error
With FDD:
S
Controllers disabled, motor braked
S
SIMODRIVE_READY and DRIVE_READY are reset.
S
Reset error
Response via MD 1613.0 can be configured as from drive SW 2.
Explanation
The band-stop frequency of a speed setpoint filter is greater than the Shannon sampling frequency from the sam-
pling theorem.
Remedy
The band-stop frequency of a speed setpoint filter must be smaller than the reciprocal value of two speed control-
ler pulserates.
Speed setpoint filter 1:
MD 1210 < 1 / (2MD 100031.25 microsec)
Speed setpoint filter 2:
MD 1213 < 1 / (2MD 100031.25 microsec)
Speed setpoint filter 3:
MD 1216 < 1 / (2MD 100031.25 microsec)
Speed setpoint filter 4:
MD 1219 < 1 / (2MD 100031.25 microsec)
The band-stop frequency of a current setpoint filter must be smaller than the reciprocal value of two current con-
troller pulserates.
Current setpoint filter 1: MD 1214 < 1 / (2MD 100031.25 microsec)
Current setpoint filter 2: MD 1217 < 1 / (2MD 100031.25 microsec)
Note
Alarm in SW 5 and higher
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Siemens AG 2001 All rights reserved 6FC5198–jAB40
SINUMERIK 840C / SIMODRIVE 611–D (DA)
04/96
07/97
Reset key
Reset key