Festo CPV-GE-ASI-8E6A-Z Series Brief Description page 10

3.5 Connecting the AS-interface bus and the load voltage
Please note
The sensor power supply for the inputs is provided via
the AS-Interface bus.
The power supply for the valves (outputs) is provided
by the additional supply: The valves must be supplied
separately with 24 V via the load voltage connection.
The AS-Interface has an integrated watchdog function
which resets the outputs if there is a bus communica­
tion failure.
Warning
Use power supplies which guarantee reliable electrical
isolation of the operating voltage as per IEC/DIN EN
60204-1. Consider also the general requirements for
PELV circuits in accordance with IEC/DIN EN 60204-1.
By the use of PELV circuits, protection against electric
shock (protection against direct and indirect contact) is
guaranteed in accordance with IEC/EN 60204-1 (Electri­
cal equipment for machines, General requirements).
10 Festo CPV10/14-ASI-8E6A 2018-11b English