5.1.9 Expansion module 4/8F-DI
Properties
With the expansion module 4/8F‑DI, the 3RK3 central unit can be expanded with further safety-
related inputs. 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 4/8F‑DI.
Inputs and outputs
The expansion module 4/8F-DI has the following inputs and outputs:
• 8 safety-related, parameterizable sensor inputs
• 2 test outputs for sensor supply and monitoring when used with safety-related sensor inputs
Design of the expansion module 4/8F-DI:
Front view No. Meaning
6),1,1,1,1
,1,1,1,1
7,1,1
7,1,1
/0,1
,1,1,1
5.$$
)',
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 97
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