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Saia-Burgess Controls AG

Manual Manual PCD 1 / PCD 2 Series │ Document 26 / 737 EN22 │ 2013-11-26

CPUs and expansion housings

3-24

InstallationandaddressingofPCD2I/Omodules

3.7 Installation and addressing of PCD2 I/O modules

3.7.1 Insertion of I/O modules

TheI/Omoduleisinsertedfromtheside,pushedtowardsthemiddleoftheunituntilit

reaches the end stop, and snapped into the retaining catch.

Retaining catch Bus connector

I/OmodulesandI/Oterminalblocksmayonlybepluggedinandremovedwhenthe

Saia PCD

and the external +24 V are disconnected from the power supply.

3.7.2 Address and terminal designation

Cover of PCD2

LED display of status

I/O function name *)

I/O module name

I/O-module

Terminal numbers

Function mnemonics

and relative I/O-address

8 7 6 5 3 2 1 04

*) All PCD1/PCD2 units are suitably labelled

Removing the cover gives access to terminals, but also exposes components that are

sensitive to electrostatic discharges.

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SBC PCD2.M170 Specifications

General