Siemens SINUMERIK 840D Description Of Functions page 81

11.03
SGE "Deselect ext. STOP D"
SGA "STOP A/B is active"
SGE "Deselect ext. STOP C"
SGA "STOP C is active"
SGE "Deselect ext. STOP A"
SGA "STOP A/B is active"
Fig. 3-11 Sequence, test stop for external STOPs
Example: The external STOPs D, C and A are used
Which SGEs/SGAs are The following SGEs/SGAs can be used to perform the test stop for external
required for the test STOPs:
stop of external
Table 3-11
STOPs?
SGE "Pulse cancellation" can be requested and executed via this SGE from both
De-select ext. STOP A 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.
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Phase 1
SGEs/SGAs for test stop, external STOPs
NCK NCK-SGE "test stop selection"
monitoring NCK-SGE "status pulses cancelled"
channel NCK-SGA "pulses enabled"
Drive PLC-SGE "test stop selection"
monitoring PLC-SGA "status pulses cancelled"
channel
3 Safety-Related Functions
Phase 2
Phase 1
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"
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"
3.2 External STOPs
EXT_01.DSF
Phase 2
3-81