1. Installation
1-10
Festo P.BE-CTEU-EC-OP+MAINT-EN en 1208NH
1.4.2 Power supply
The bus node has separate operating and load voltage
supplies. The bus node also supplies voltage to equipment
connected via the I-port interface.
W arning
•
Only use PELV circuits compliant with IE C/EN 60204-1
(protective extra-low voltage, PELV) for the electrical
power supply.
•
Also observe the general requirements for PE LV circuits
as per IEC/EN 60204-1.
•
Only use voltage sources which ensure reliable electrical
isolation of the operating vo l tage in accordance with
IEC/EN 60204-1.
•
Always connect the circuits for both operating and load
voltage supply.
The use of PELV circuits ensures protection from electric
shock (protection from direct and indirect contact) in accord-
ance with IEC/EN 60204-1 (E l ectrical equipment of machines,
General requirements).
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