5.1.11 Expansion module 2/4F‑DI 2F‑DO
Properties
With the 2/4F‑DI 2F‑DO expansion module, the 3RK3 central unit can be expanded with further
safety-related inputs and outputs. It can be used up to SIL 3 per EN 61508 and PL e/Cat. 4 per
EN ISO 13849-1.
• 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 2F‑DO.
Inputs and outputs
The expansion module 2/4F‑DI 2F‑DO has the following inputs and outputs:
• 4 safety-related, freely parameterizable sensor inputs
• 2 safety-related two-channel semiconductor outputs
• 2 test outputs for sensor supply and monitoring when used with safety-related sensor inputs
Design of the expansion module 2/4F‑DI 2F‑DO
Front view No. Meaning
6),1,14
,1,14
7,1,1
7,1,1
/0
44
5.$$
)',)'2
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
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 103
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