Description of the hardware
5.1 Description of the individual modules
Modular Safety System 3RK3
System Manual, 10/2008, 926 2530-02 DS 02
53
Connecting inputs and outputs
You can find more information on connecting inputs and outputs in the section Connecting
safety-related inputs and outputs (Page
69).
5.1.8 Expansion module 4/8F-RO
Properties
The expansion module 4/8F-RO supplements a central unit. To achieve SIL 3 or Pl e, 2 relay
outputs must be interconnected in combination.
● Additional expansion modules can be connected to the expansion module 4/8F-RO.
● Parameterization is carried out via the central unit with MSS ES.
Inputs and outputs
The expansion module 4/8F-RO has the following inputs and outputs:
● 8 single-channel, safety-related relay outputs.
Design of the expansion module 4/8F-RO
Front view No. Meaning
(1) Removable terminal block D
(2) Removable terminal block C
(3) Interface X2
(4) Removable terminal block A
(5) Inscription label
(6) Display LEDs
444444
444444
/04444
;;
6)4444
4444
5.$$
)52
(7) Interface X1
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