3 Safety-Related Functions 11.03
3.2 External STOPs
© Siemens AG 2003 All Rights Reserved
3-80 SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
STOP $MA_SAFE_IPO_STOP_GROUP = 0 $MA_SAFE_IPO_STOP_GROUP = 1
E
ESR enabled and active ESR is initiated
ESR neither active nor enabled After a maximum delay time of 2 interpolation cycles,
the behavior as described for STOP D is initiated.
3.2.1 Test stop for external STOPs
The introduction of another method for activating STOP A, C, D and E via
SGEs means that it is also necessary that this branch is subject to a forced
checking procedure.
The test stop of external STOPs is divided into the following phases:
• Phase 1
The shutdown path is tested as usual (refer to Chapter 3.1.3, "Testing
shutdown paths"). Correct functioning of safe pulse cancellation is tested.
Successful completion of this phase is signaled as follows:
– For the NCK monitoring channel:
A positive checkback signal is returned in the form of a 0/1 edge from
SGE "status pulses cancelled"
– For the drive monitoring channel:
Positive checkback is indicated by the SGA "status pulses
cancelled"
• Phase 2
Once the safe pulse cancellation has been checked for both channels in
phase 1, in phase 2 it is sufficient to test the reliability of the SGE stop
requests.
The procedure is as follows:
All externally wired/used stop SGEs are switched one after the other in
each channel and the positive response evaluated via the associated SGA
"STOP x is active".
Note
Phase 2 only has to be performed if the function "external STOPs" (via
MD 36901/1301) is enabled.
Only the enabled and activated external stop functions have to be tested.
Test stop for external
STOPs
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