Siemens SIRIUS 3RK3 Equipment Manual page 82

Description of the hardware
5.1 Description of the individual modules
Structure of the 3RK3 Advanced central unit
Internal circuit diagram
Figure 5-5
Terminal names of the 3RK3 Advanced central unit
Terminal
T1
T2
82
Front view
3RK3131-1AC10
24V
DC
MSS 3RK3 Advanced internal circuit diagram
Meaning
Test output for inputs IN1,
IN3, IN5, IN7
Test output for inputs IN2,
IN4, IN6, IN8
No. Meaning
①
Removable terminal block D
②
Removable terminal block C
③
Connection for expansion module (X2)
④
RESET button
⑤
Removable terminal block A
⑥
External memory module (X3; sealable)
⑦
Label
⑧
Display LEDs
⑨
Connection of PC or programming device,
interface module, diagnostics display (X1)
Explanation
• Test outputs with different test signals
• Connection for sensor contacts for detecting cross-
circuits
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006