5.1.10 Expansion module 2/4F‑DI 1/2F‑RO
Properties
With the 2/4F‑DI 1/2F‑RO expansion module, the 3RK3 central unit can be expanded with further
safety-related inputs and outputs. To achieve SIL 3 per EN 61508 or PL e / Cat. 4 per
EN ISO 13849-1, you must interconnect 2 relay outputs in a logic combination.
• Parameterization is performed using the 3RK3 central unit with Safety ES software.
• Additional expansion modules can be connected to the expansion module 2/4F‑DI 1/2F‑RO.
Inputs and outputs
The expansion module 2/4F‑DI 1/2F‑RO has the following inputs and outputs:
• 4 safety-related, freely parameterizable sensor inputs
• 2 safety-related single-channel relay outputs
• 2 test outputs for sensor supply and monitoring when used with safety-related sensor inputs
Design of the expansion module 2/4F‑DI 1/2F‑RO
Front view No. Meaning
6),1,14
,1,14
7,1,1
7,1,1
/04
444
5.$$
)',)52
① Removable terminal block D
② Removable terminal block C
③ System interface (X2)
④ Label
⑤ Removable terminal block A
⑥ Removable terminal block B
⑦ Display LEDs
⑧ System interface (X1)
Description of the hardware
5.1 Description of the individual modules
SIRIUS 3RK3 Modular Safety System
100 Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
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