Festo CP-A04-M12-CL, Manual

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2. Input modules type CP−E08−M...−CL and CP−E16−KL−CL
2−8
Festo P.BE−CPEA−CL−E N en 0404NH
2.3 Installation
Warning
Sudden unexpected movements of the connected actua
tors and undefined switching states of the electronics can
cause injury to human beings and damage to property.
Before carrying out installation and/or maintenance work,
switch off the following:
the operating and load voltage supply on the CP master
(e.g. CP field bus node)
separate power supplies.
Warning
Incorrect or missing earthing measures can cause inter−
ference due to electromagnetic influences.
Connect the earthing cable on the housing (screw under
type plate, see Fig.2/1, Fig.2/2 or Fig.2/3) at low impe
dance (short cable with large diameter) to the earth poten
tial. A suitable cable clip is supplied with the module.