Festo VMPA-ASI-EPL-4E4A-Z Serie Mode D'emploi page 26

3.6 Connect the AS−Interface bus and the load voltage
The sensor supply for the inputs is provided via the
AS−Interface bus.
Warning
Use only power units which guarantee reliable electrical
isolation of the operating voltage as per IEC/DI N
EN 60204−1. Observe also the general requirements for
PELV power circuits as per IEC/DI N EN 60204−1.
Note
The power supply for the valves (outputs) depends on
the DIL switch setting:
with 24 V additional supply, separate via the load
voltage connection.
without additional supply via the AS−Interface bus.
Only possible if the maximum current consumption
is not exceeded.
Please note with branch lines:
the maximum total length of the AS−Interface bus:
(100 m without repeaters/extenders)
the length of the load voltage connection cable
(depends on the current consumption of the valve
terminal and fluctuations in load voltage).
26 Festo VMPA−ASI−EPL−...−4E4A−Z 1010a English