Installation - Festo CPI-CL Series Manual

4. Input modules type CP−E16−M...−EL and CP−E32−M8−EL
4.4

Installation

4−10
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 maintenance work,
switch off the following:
The operating and load voltage supply on the CP master
(e.g. CPI/CP fieldbus node)
Separate power supplies
Warning
Incorrect or missing earthing measures can cause interfer
ence due to electromagnetic influences.
Connect the earth connection on the housing with low
impedance (short cable with large cross−sectional area)
to the earth potential.
A suitable cable lug is supplied with the module.
Note
With wall mounting, earthing is done via a earthing
cable.
With H−rail mounting, earthing is done via a clamping
component.
Festo P.BE−CPEA−CL−EN en 0711a