Festo CPX-2AA-U-I, Electronic Manual

Page: 39 / 228

1. Overview and connection technology I/O modules
1−21
Festo P.BE−CPX−AX−EN en 0503b
1.3.1 Fitting the sub−bases
No te
Handle all modules and components of the CPX terminal
with great care. Please note especially the following:
·
Screws must be fitted accurately (otherwise threads will
be damaged).
Screws must be fastened at first only by hand. Place the
screws so that the self−cutting threads are used.
·
The specified torques must be observed.
·
Screw connections must be fitted free of offset and
mechanical tension.
·
Check the seals for damage (IP65).
·
Connecting surfaces must be clean (sealing effect, avoid
leakage and contact faults).
The screw connection between the sub−base and the mani
fold is designed for at least 10 fitting/removal cycles under
observance of the instructions.
Observe also the installation instructions supplied with
modules and components ordered at a later stage.
CPX terminals are supplied from the factory completely fitted.
It may be necessary to fit or remove the sub−bases for the
following reasons:
for replacing the connections
to simplify fitting the sensor plugs or cables.
It may be necessary to fit or remove the electronic modules
for the following reasons:
for modifying the function of the I/O module
(e. g. CPX−2AE−U−I instead of CPX−2AA−U−I).
for replacing defective electronic modules.