Description of the hardware
5.1 Description of the individual modules
Modular Safety System 3RK3
System Manual, 10/2008, 926 2530-02 DS 02
51
Displays of the expansion module 2/4F-DI 2F-DO
Element Meaning
SF / IN1 Group error / sensor input
IN2, IN3, IN4 Sensor inputs
Q1, Q2 Solid-state outputs
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).
5.1.7 Expansion module 4F-DO
Properties
The expansion module 4F-DO supplements a central unit. It can be used up to Category 4 in
accordance with EN 954-1 and SIL 3 in accordance with IEC 61508, or PL e in accordance
with EN ISO 13849-1:2006.
● Additional expansion modules can be connected to the expansion module 4F-DO.
● Parameterization is carried out via the central unit with MSS ES.
Inputs and outputs
The expansion module 4F-DO has the following inputs and outputs:
● 4 two-channel, safety-related solid-state outputs
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