Siemens SINUMERIK 840D

11.03 3 Safety-Related Functions
3.2 External STOPs
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
3-81
EXT_01.DSF
SGA "STOP A/B is active"
SGE "Deselect ext. STOP A"
SGA "STOP C is active"
SGE "Deselect ext. STOP C"
SGE "Deselect ext. STOP D"
SGA "STOP A/B is active"
Phase 1 Phase 2
Fig. 3-11 Sequence, test stop for external STOPs
Example: The external STOPs D, C and A are used
The following SGEs/SGAs can be used to perform the test stop for external
STOPs:
Table 3-11 SGEs/SGAs for test stop, external STOPs
Phase 1 Phase 2
NCK
monitoring
channel
NCK-SGE "test stop selection"
NCK-SGE "status pulses cancelled"
NCK-SGA "pulses enabled"
NCK-SGE "de-select ext. STOP A"
NCK-SGA "STOP A/B is active"
NCK-SGE "de-select ext. STOP C"
NCK-SGA "STOP C is active"
NCK-SGE "de-select ext. STOP D"
NCK-SGA "STOP D is active"
NCK-SGE "de-select ext. STOP E"
NCK-SGA "STOP E is active"
Drive
monitoring
channel
PLC-SGE "test stop selection"
PLC-SGA "status pulses cancelled"
PLC-SGE "de-select ext. STOP A"
PLC-SGA "STOP A/B is active"
PLC-SGE "de-select ext. STOP C"
PLC-SGA "STOP C is active"
PLC-SGE "de-select ext. STOP D"
PLC-SGA "STOP D is active"
PLC-SGE "de-select ext. STOP E"
PLC-SGA "STOP E is active"
"Pulse cancellation" can be requested and executed via this SGE from both
monitoring channels.
The safe functions currently active (SG/SBH/SN/SE) are not influenced by this
SGE.
If one of the limits currently active is violated an alarm is triggered. The
associated switch-off response cannot be activated because the pulses have
already been cancelled. As soon as the stop request is canceled via SGE "de-
select ext. STOP A" any queued stop responses become active.
Which SGEs/SGAs are
required for the test
stop of external
STOPs?
SGE
De-select ext. STOP A