Siemens SIRIUS 3RK3 - Page 98

Internal circuit diagram
.
;
;
,1,1,1,1,1,17,1,1
0
7/
0
9
Figure 5-11 EM 4/8F-DI internal circuit diagram
Terminal designations of the expansion module 4/8F-DI:
Terminal Meaning Description
T1 Test output for inputs IN1,
IN3, IN5, IN7
• Test outputs with di󹪜erent test signals
• Connection for sensor contacts for detecting cross-
circuits
T2 Test output for inputs IN2,
IN4, IN6, IN8
IN1 ... IN8 Safety-related sensor inputs Terminal for safety sensors
Combinations for two-channel connection:
• IN1 with IN2
• IN3 with IN4
• IN5 with IN6
• IN7 with IN8
L+ Power supply 24 V DC
M Ground Ground to 24 V DC
Interfaces of the expansion module 4/8F-DI:
Interface Meaning Description
X1 System interface Connection of central unit/expansion module
X2 System interface Connection of expansion module
Displays of the expansion module 4/8F-DI
Element Meaning
SF / IN1 Group error / status of the sensor input
IN2 ... IN8 Status of the sensor inputs
Description of the hardware
5.1 Description of the individual modules
SIRIUS 3RK3 Modular Safety System
98 Equipment Manual, 07/2020, NEB926253002000/RS-AC/006