24V Power
The 24V Power terminals provide 24V regulated, continuous power from the power supply to the module(s) of
the XT+ unit.
Aux 24V
The AUX 24V output terminals provide regulated 24V DC with a maximum load rating of 360mA for powering
ancillary devices. This is a class B connection supervised for grounds and shorts only. To provide supervision
for opens, the use of an end-of-line relay (such as System Sensor's EOLR-1) is required. The end-of-line relay
must be the last device on the circuit and the relay contacts must be supervised. Refer to the installation
instructions of the end-of-line device for wiring information. The R0V terminal is opened for around 5 seconds
each time the module is reset. This is typically used to reset ancillary items such as beam detectors, which need
a power cycle to reset them. If this function is not desired, it can be disabled in LE2.
Wiring gauge on AUX 24V outputs must be sized as a function of cable length and device load to ensure that
voltage-drop of the cable does not result in less than the minimum operating voltage at the ancillary devices.
Trouble
VES Fire Detection Systems
XT+ Releasing Control Unit Installation Manual
Version 1.00 | December 2018 | MAN-1252VES
Page 26
Installation
