Oliver IGD Tocsin 920 Series, Эксплуатация и обслуживание

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Tocsin 920 Highway Hub Single Ended Cable Operation
GND
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-
OLIVER
IGD
8
Tocsin 920 Highway Hub Single Loop Back Cable Operation
Cable 1 Cable 2
In this example detectors are
installed onto Cable 1 (highway 1).
They are then wired back to the hub
to Cable 2. The Tocsin 920 will
primarily communicate on cable one.
If communication is lost then the
Tocsin 920 will attempt to
communicate on cable 1 and cable 2.
If this occurs then the sensor channel
select button will turn yellow to
indicate that channel is
communicating in loop back mode
due to some cable error. Once the
error is corrected the channel select
button will revert to being green.
The loop back function is intended to provide increased
cable integrity in the event of cable breaks or similar on
site. Note that loop back must be selected in the system
set up menu and the correct highway cable and loop
back cable set up in the channel set up menu.