Siemens SINUMERIK 840D sl Function Manual page 363

05.08
SGE test stop selection
This signal is used to initiate the shutdown path test for the drive monitoring chan-
nel (see Chapter 6.1.1 "Shutdown paths").
SGE
Test stop selection
Procedure
"test stop running"
Procedure
"cancel pulses"
SGA
"status, pulses are deleted"
1
2
3
Fig. 8-1
The test stop is also carried out at the same time in the NCK monitoring channel
(see Chapter 6.1.2 "Testing the shutdown paths").
Test stop for external STOPs
See Chapter 6.3.8 "Forced checking procedure of the external STOPs".
SGE deselect ext. STOP A
"Pulse cancellation" can be requested and executed using this SGE.
The safe functions currently active (SG/SBH/SN/SE) are not influenced by this
SGE.
If one of the currently active limits is violated, an appropriate alarm is initiated. The
associated shutdown response cannot be activated because the pulses have al-
ready been cancelled. As soon as the stop request is cancelled via the SGE "dese-
lect ext. STOP A" any queued shutdown responses become active.
If a stop request is active, SGA "STOP A/B is active" is set in the same way as it
would be for an internally triggered STOP A.
0 signal:
1 signal:
© Siemens AG 2008 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
1
Timer and check
Pulse cancellation is started by setting the signal (1 PLC cycle).
After the test stop has been started, a timer runs. When the time in the timer has expired,
the test stop execution is checked using the SGA "status, pulses are cancelled".
The system resets the signals.
Signal timing for SGE test stop selection
"Pulse cancellation" is requested
"Pulse cancellation" is not requested
Data Description
8.3 Interface signals
2
3
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