BECKHOFF CX2100­00x4 - Manual (Page 29)

Mounting and wiring
4.2 Commissioning
4.2.1 Power supply
This power supply unit is equipped with an I/O interface, which permits connection of the Beckhoff Bus
Terminals. The power is supplied via the upper spring­loaded terminals labelled “24V” and “0V”.
The supply voltage supplies the CX system ant the terminal Bus and Bus Terminal with a voltage of 24 V DC
(­15%/+20 %). The dielectric strength of the power supply unit is 500V
eff
. Since the Terminal Bus (K­ and E­
bus) only transfers data, a separate power supply is required for the Bus Terminals. This is provided by
means of the power contacts, which are not connected to the power supply.
CX2100­004:
CX2100­014:
Requirements for the 24V power supply
In order to guarantee the operation of the CPU (CX20x0 module) and the terminal strand in all cases, the
power supply must supply 4 A at 24 V.
CX2100­00x4 29 Version 1.0