Festo CPX-CTEL-4-M12-5POL, Описание

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3 Installation
22 Festo – P.BE-CPX-CTEL-EN – 1601b – English
3.5 Connecting the power supply
Take the following aspects into consideration when installing a CPX system with CTEL master module:
– Power supply (
è
3.5.1 Power supply)
– Current consumption (
è
3.5.2 Determining the current consumption)
– Formation of voltage zones (
è
CPX system description P.BE-CPX-SYS-...)
Note
Observe the instructions on earthing the I-Port devices in the description for
the relevant module.
Recommendation:
When implementing an emergency stop function, route the load voltage for the corresponding actu­
ators separately.
Note
Check whether a pressure switch-off function is also required for the machine/system in
the event of an emergency stop.
3.5.1 Power supply
The CPX terminal has 3 different conductors:
– Operating voltage supply U
EL/SEN
(PS) for internal electronics of the CTEL master module and
the connected devices
– Load voltage supply U
OUT
for digital output modules
– Load voltage supply U
VAL
(PL) for valve terminals, output modules or other consumers.
The load voltage supply U
OUT
is not used by the module described here. Additional
information about the power supply and the formation of voltage zones can be found in
the CPX system description (
è
P.BE-CPX-SYS-…).
Note
Operative malfunctions due to insufficient power supply.
The load voltage supply U
VAL
must be sufficiently dimensioned to be able to supply
the connected actuators.
Observe that, dependent on the respective length of the I-Port connecting cable and
current consumption of the connected I-Port device, a voltage drop results between
the CTEL master module and the device.
Therefore, when using connecting cables
,
5 m, the operating voltage supply U
EL/SEN
should not be fallen below by more than 10 %.
The total current requirement of the CPX terminal and the CTEL system, as well as
the limit values for the maximum current intensities, must be taken into account in
the design of the voltage supply (
è
3.5.2 Determining the current consumption).