Appendix InRailBus (Option)
7.2 Using InRailBus Connector
7.2.1 Connection of the Power Supply Voltage
The power supply voltage can be connected via the +24V connector for the power supply voltage
or via InRailBus connector.
NOTICE
Please note the safety instructions to requirements on the supply current circuit (see page
4).
NOTICE
The connections for the 24V power supply are internally connected and must not be
supplied by two independent current sources at once!
Fig. 30:
ECX-EC with connection of the power supply voltage
Earthing the mounting rail
NOTICE
Connect the mounting rail to functional earth potential. Please note that the impedance of
the connecting cable has to be kept low.
Functional earth is a current path of low impedance between current circuits and earth, which is
used to increase the interference immunity. It is not intended as protective measure and does not
protect against accidental contact.
Page 68 of 74
Manual • Doc. No.: E.3022.21 / Rev. 1.9
ECX-EC