11.03
3 Safety-Related Functions
3.1 Basic mechanisms of SI functions
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
3-59
ABSCH_03.DS4
Timer
"Pulses
disabled
status"
STOP A
SW
SGE "Test stop-selection"
(via NCK/PLC interface)
HW
Terminal 663
AS1
+5V
0V
Safety
relay
AS2
0V
0V
PLC
Inputs/outputs
Drive closed-loop control
"Disable pulses" signal
"Pulses are
disabled status"
signal
Start
Drive_IMP"
relay
SGA "Pulses are disabled status"
Fig. 3-2
Shutdown path of the drive CPU
Two options are available from SW 6.3.30 onwards:
1. Via Terminal 663
2. Via internal pulse cancellation.
Pulse cancellation is initiated via the NCK SGE "test stop selection" (can also
be initiated internally in the case of an error). The comparator uses the SGA
"enable pulses" to cancel the enabling command at module-specific terminal
663 on the 611 digital drive module. The cancelled state is signaled back to the
comparator in the NCK CPU via terminals AS1/AS2 of the drive module and the
SGE "pulses cancelled status". The SGEs/SGAs are assigned to the NCK HW
inputs/outputs via machine data.
Shutdown path of
NCK CPU
Pulse cancellation
via terminal 663