Ax60 Carbon Dioxide Detector
Quick Start Guide - Hard Wired Option
Document ref: P0159-802-03
September 2015
Page 9 of 16
4.2.1
Central Display to CO
2
Sensor
Cable connections from left to right:
GRN/WHT (RS485 A, single cable)
GRN (RS485 B, single cable)
BRN & BRN/WHT (supply negative, two
cables twisted together)
ORG & ORG/WHT (supply positive, two cables
twisted together)
NOTE: THE BLUE AND BLUE/WHITE
CABLES CAN BE REMOVED (CUT OFF).
4.2.2
Central Display to power supply unit (PSU)
Two types of PSU are available, to suit different types of installation. One is a plug-in
type, the other is a hard-wired type for connection to a fixed power supply (fused spur).
WARNING: THE HARD-WIRED PSU SHOULD BE CONNECTED TO A 3A FUSED SPUR.
PSU, plug-in type
(supplied with plug
for specific country)
PSU, hard-wired type
(for connection to a
fixed power supply)
The plug-in PSU is supplied with a securing
strip, wall plugs and screws to reduce risk
of accidental disconnection or tampering
WARNING:
THE POSITIVE AND NEGATIVE POWER CABLES ARE IDENTIFIED
DIFFERENTLY
DEPENDING
ON
THE TYPE OF PSU SUPPLIED. READ
THE INSTRUCTIONS BELOW BEFORE INSTALLING THE PSU CABLE:
Plug-in type PSU cable identification
Black with stripe: Positive (24V)
Black with print: Negative (0V)
Hard wired type PSU cable identification
Black with stripe: Negative (0V)
Black with print: Positive (24V)
4.2.3
Central Display to optional beacon (labelled ‘STROBE’ on the PCB)
Cable connections from left to right:
BLK (0V supply to optional beacon)
RED (24V supply to optional beacon)
CAUTION: CABLE COLOURS BETWEEN
THE CENTRAL DISPLAY AND BEACON
MAY VARY. THE INSTALLER MAY USE
CAT5E CABLE IF PREFERRED, PROVI-
DING TWISTED PAIRS ARE USED.
