87
2121331-04-04/19 (Translation of the original operating instructions)
Operating Instructions
Modular Safety Control System MSC
EN
9.2.1.6. Usage of the automatic start (A) or manual start (B) (category 2)
Figure 76: Usage of the automatic or manual start
Category 4.
Outputs with a two category 4 relays. Each module AZ-FO4 / AZ-FO4O8 can have up to two outputs of this
type. The relays are operated in pairs for this output.
Properties:
Ì
2 dual-channel outputs.
Ì
Double internal relays are monitored.
Ì
The output can be configured for a manual or automatic restart.
Figure 77: Relay output cat. 4
NOTICE
To avoid affecting the result of the calculation of the PL, the inputs (sensors or safety components)
must correspond to the same or a higher category as the other devices in the chain.
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