Siemens SINUMERIK 840D

7 Configuring example 11.03
7.3 Safety Integrated with SPL
© Siemens AG 2003 All Rights Reserved
7-398 SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
13
21
31
14
22 32
I1
I2
PLC
Q 48.1
PLC
NCK
I76.3
I2
I76.1
+24V
I76.2
13
14
Door button
SCHALTPL.DSF
SIGUARD
Door switch
open
closed
Fig. 7-15 Wiring of the door switch
Note
If external devices and equipment (hydraulics, cooling water, etc.) are to be
powered-down/disconnected when the door is opened, then in this case, the
same contactor circuit should be used as for the Emergency Stop (K1/K2).
This means that an output must be supplied, in the PLC-SPL
($A_OUTSEP
[n]) as well as in the NCK-SPL ($A_OUTSE[n]) that drops-out
when the door opens. The checkback input must be checked every time the
protective door is opened, or even better, integrated into the forced checking
procedure of the inputs/outputs (error response STOP D from PLC) – if it is
not certain that the door will be opened once within eight hours.
7.3.8 De-selecting SBH via the key-operated switch
The safe operating stop is not active when the protective door is closed. When
the door is open, the operator can switch between safe operating stop and
safely-reduced speed using a key-operated switch. In addition, the switch
setting in the PLC can be used to select one of the NC operating modes.
Circuit diagram