User manual

Connecting XBT Terminals
33003962 11/2011 69
Distinguishing XBT Terminals by Power Supply
Overview
For controlling an automation system, connect your XBT terminal to a PLC.
The correct cabling depends on whether your XBT terminal is
z powered by the PLC
z powered by an external 24 VDC power supply
The following XBT terminals need 5 V power that must be supplied by the PLC in
this case:
z XBT N200
z XBT N400
z XBT R400
z XBT RT500
NOTE: XBT RT500 terminals are protected against accidental connection to higher
voltages (up to 30 V) but the other terminal types are not and will be damaged.
The following XBT terminals need an external power supply supplying 24 VDC:
z XBT N410
z XBT N401
z XBT NU400
z XBT R410
z XBT R411
z XBT RT511
Data Exchanged Between XBT Terminals and PLCs
Since data are continuously exchanged in a human/machine dialog between an
XBT terminal and a PLC please consider the following recommendations.
Loss of communication between the terminal and the PLC can result in partial or
complete loss of control of the machine.
CAUTION
OVERVOLTAGE DAMAGE TO EQUIPMENT
Make sure to connect the following terminals only to a source providing 5 VDC.
z XBT N200
z XBT N400
z XBT R400
z XBT RT500
Failure to follow these instructions can result in injury or equipment damage.