Detector Highways
Pin 1 24V DC
Pin 2 Comm B
Pin 3 Comm A
Pin 4 0V DC
Tocsin 920 Highway Hub Single Ended Cable Operation
GND
ZERO
F
AUL
T
CAL
360
CHASS
24V DC
B
A
GND
mA
P
Y
W
Common
Active
Compensator
ZERO
F
AUL
T
CAL
360
CHASS
24V DC
B
A
GND
mA
P
Y
W
mA+
360
CONC
0V
mA-
Common
Active
Compensator
mA+
360
CONC
0V
mA-
Cable Guidance Panel
It is imperative to use cabling which suits the environment in which the T920 and its
sensors are to be used. The following is intended as a guide only. Always use screened cable.
Fit 1.5mm SQ cable for analogue systems
Fit 2.5mm SQ cable for addressable systems (refer to OIGD Cable Calculator for full information)
Use
Pirelli LSX type cable for office/light commercial installations
Steel Wire Armored or CY cable or conduit for medium/heavy
industrial installations.
Not that ATEX standards
state that cables should have
the required degree of
mechanical protection for the
are in which they are to be
installed.
OLIVER
IGD
7
First Highway on Card
If only one hub card then this is cable 1
