Note
Safety-related outputs
If you use the safety-related outputs with a two-channel shutdown, a fault exclusion, such as a
short-circuit to P or M, is required. This condition is met within a control cabinet and when the
connection cables are installed in such a way that they are protected.
Structure of the 3RK3 Basic central unit
Front view No. Meaning
7,1,1,1,1
7,1,1,1,1
444/0)(
;;
'(9,&(
6)
5(6(7
,1
066%DVLF
24V
DC
,1,1,14
,1,1,1,14
3RK3111-1AA10
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 Connection of a memory module (X3,
sealable)
⑦ Label
⑧ Display LEDs
⑨ Connection of PC or programming device,
interface module, diagnostics display (X1)
Internal circuit diagram
/RJLF
.
;
;
)(440
4,1,1,1,17,1,1,17,1/
).).0
).9
Figure 5-3 MSS 3RK3 Basic internal circuit diagram
Description of the hardware
5.1 Description of the individual modules
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 77
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