Beckhoff CX9000 Manuel d'utilisateur télécharger pdf (Page 18)

Product overview

16 Embedded PC

Connections

The system is supplied with power via the integrated power supply. This is wired as follows:

The basic module is powered via the upper connectors with 24 V DC. The terminal bus can be supplied via the lower

connections.

UL requirements

Danger

For the compliance of the UL requirements the CX-Controllers should only be supplied

• by a 24 V

supply voltage, supplied by an isolating source and protected by means of a

fuse (in accordance with UL248), rated maximum 4 Amp.

• by a 24 V

power source, that has to satisfy NEC class 2.

A NEC class 2 power supply shall not be connected in series or parallel with another

(class 2) power source!

These UL requirements are valid for all supply voltages of the CX-Controllers!

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Beckhoff CX9000 Manuel d'utilisateur Page 18