Siemens Sinumerik 840C Diagnostics Manual page 228

1 Alarms
1.5.1 Alarm description
300907 Tolerance for safe operational stop exceeded
Scan
Cyclic in SI monitoring cycle.
Effect
The drive is stopped with STOP A or STOP B. The pulses are disabled via relay "Drive_IMP".
Explanation
The actual position has migrated too far from the set/standstill position (outside the standstill window). The stand-
still window is configured in MD 1330.
Remedy
The user must find the cause and initiate appropriate measures.
Note
Applies as from SW 5.4
300908 Stop C triggered
Scan
Cyclic in SI monitoring cycle.
Effect
The drive is stopped with STOP C. After completion of the stop reaction, the drive remains under control, and the
axis is monitored for SBH.
Explanation
There can be several reasons for triggering STOP C (depending on the configuration):
S
The safe speed monitoring has responded (MD 1361).
S
The safe end position monitoring has responded (MD 1362).
Remedy
The user must find the cause and initiate appropriate measures.
Note
Applies as from SW 5.4
300909 Stop D triggered
Scan
Cyclic in SI monitoring cycle.
Effect
The NC has stopped the drive with STOP D. After completion of the stop reaction, the drive remains under control,
and the axis is monitored for SBH.
Explanation
There can be several reasons for triggering STOP D (depending on the configuration):
S
The safe speed monitoring has responded (MD 1361).
S
The safe end position monitoring has responded (MD 1362).
Remedy
The user must find the cause and initiate appropriate measures.
Note
Applies as from SW 5.4
300910 Stop E triggered
Scan
Cyclic in SI monitoring cycle.
Effect
The NC has stopped the drive with STOP E. After completion of the stop reaction, the drive remains under control,
and the axis is monitored for SBH.
Explanation
There can be several reasons for triggering STOP E (depending on the configuration):
S
The safe speed monitoring has responded (MD 1361).
S
The safe end position monitoring has responded (MD 1362).
Remedy
The user must find the cause and initiate appropriate measures.
Note
Applies as from SW 5.4
300911 Failure in a monitoring channel
Scan
Cyclic in SI monitoring cycle.
Effect
If no Safety Integrated monitoring system is active, STOP F does not initiate a stop response, but displays the
message "Failure in a monitoring channel".
If SBH/SG, SE or SN are active, the drive is stopped with the stop response STOP A/B.
Explanation
Cross–comparison between NC and drive has revealed a difference, and STOP F has been initiated.
Remedy
Find the difference between the monitoring channels. The error code which indicates the cause appears
as follows:
S
on 840C
MD 301: Diagnostics for STOP F
S
on 611D
MD 1395
The meaning of the error code can be found in the SINUMERIK Safety Integrated documentation.
It is possible that the safety–related machine data are no longer identical or that the SGEs do not have the same
signal level (measure again or check in the SI service display). If no such error is found, an error may have oc-
curred in the CPU, such as a corrupt memory cell. This error can be transient (remedied by POWER ON) or per-
manent (reoccurs after POWER ON, in this case replace the hardware).
Note
Applies as from SW 5.4
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SINUMERIK 840C / SIMODRIVE 611–D (DA)
04/96
07/97
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