Siemens SINUMERIK Series Function Manual page 147

Circuit diagram for Emergency Stop with relay 3SK
The diagram shows the wiring for the Emergency Stop, which is implemented in Safety
Integrated as SS1 (Safe Stop 1):
Emergency Stop button
L+
A1+ T1 IN1 T2
3SK1111-AB30
A2-
L-
Figure 6-10 Circuit diagram: Emergency Stop
Circuit diagram for door relay 3SK
This diagram shows the wiring for the safety relay for the doors.
Danger to life when people are locked in if the relay is automatically switched
If the door relay is automatically switched in then the door is closed and locked. Persons that
are in the machine at this point in time cannot get out and as a consequence there is a risk
of death or severe injury.
● Ensure that the door relay can only be manually switched in – and not automatically.
● For every machine type, before the machine goes into operation, carry out a risk analysis.
Safety Integrated
Function Manual, 10/2015, 6FC5397-3EP40-5BA3
Acknowledge
Emergency Stop
IN2 T3 IN3 T4 INF/S
ICO1_00274
WARNING
6.4 Controlling with the SIRIUS 3SK or SIRIUS 3RK relay
13 23 33 41
14 24 34 42
Commissioning - application example
TM54F
X521
F-DI 0
Deselect SS1
147