Siemens SINAMICS S120 Function Manual page 56

Extended Functions
4.9 Forced dormant error detection
CAUTION
The F-DI states are frozen for the duration of the test (approx. 100 ms)!
In order to be able to use the test stop function, interconnect the F-DO used in accordance
with the example of the wiring in the SINAMICS S120 GH1 Equipment Manual and wire the
forced feedback signals of the two relays to the corresponding digital input (DI 20 to DI 23).
The corresponding DIs must be registered for the test stop by means of p10046.
NOTICE
F-DOs which are not registered for evaluation by means of p10046 are set to "0" for the
duration of the test stop ("failsafe values").
Maximum test stop period: 19 * p10000 + 2 * 20 ms + 6 * p10001
If the connected devices do not support the test stop function for specific F-DIs or F-DOs,
the relevant F-DI/F-DO must be operated dynamically, e.g. by means of switch operation,
or through specific machine functions.
The test stop must be executed at a suitable time. That is, it must be initiated application-
specific. This functionality is implemented by means of a parameter p10007 which can be
wired via BICO either to an input terminal on the drive unit (CU), or to an IO-PZD in the drive
telegram.
The test stop cycle is monitored. On expiration of the programmed timer, the alarm A35014:
"TM54F: Test stop required" is output.
● p10001 SI waiting time for test stop at F-DO 0 ... 3
● p10003 SI Forced dormant error detection timer
● p10007 BI: SI input terminal forced dormant error detection F-DO 0 ... 3
● p10041 SI F-DI test enable
● p10046 SI test sensor feedback input DI 20-23
A test stop does not require POWER ON. The acknowledgment is set by canceling the test
stop request.
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WARNING
Function Manual, (FHS) , 07/2007 Edition, 6SL3097-2AR00-0BP0
Safety Integrated