Aventics SERCOS III Mode D'emploi page 53

AVENTICS | SERCOS III | R412012613–BDL–001–AC
The separate supply voltages via pin 1 and pin 2 make it
possible to switch off only the valves in an emergency OFF
situation, while the PLC, serial interfaces and initiators
remain in operation. Shutting off the power supply for the
serial interface can cause the PLC to STOP.
Damage can occur if the device is assembled or
disassembled under voltage/load!
Inadvertently connecting and disconnecting the product or
system parts under voltage/load can cause damage.
O
Make sure that all relevant system parts are not under
voltage before inserting or disconnecting plug
connectors.
W
Only use 4-pin M12 connection sockets where pin 5 is
closed, in order to rule out confusion with other connections.
W
Make sure that the largest connection cross-section
possible is selected, at least 0.55 mm².
W
Secure both supply voltages with external 3 A T fuses.
W
The applied supply voltage is indicated by a green LED (5 V):
The LED illuminates as soon as the electronics voltage
> 18 V (see also Tab. "Overview of the SERCOS III LED
displays").
W
The maximum permissible current in the 0 V line is limited
to 4 A by the plug connector.
W
Only use a shared power pack or a shared 0 V connection for
the 24 V power supply. This must be a power pack with safe
isolation in accordance with DIN EN 60742, classification
VDE 0551.
NOTICE
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Assembly