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This Section Follows the Sequence for Putting Into Service to Describe the Menu functions
Figure 1 shows the electrical connections to the Tocsin 625 controller.
Mains power is supplied via connector 2 and should be from a fused spur. This connection should be
made by a qualified electrician.
Cable Checks
Detectors are interfaced to connector 3. It is important to ensure that all connected devices are wired in
accordance with the details supplied in Figure 1 and each relevant detector or I/O node manual.
Cabling should be rigorously checked to ensure there are no cross overs or shorts before any power is
applied. If in doubt follow the cable check procedure listed in “Cable checks T625-700-920.PDF”.
Relay outputs and analogue outputs are indicated on Figure 1, connector 1 and RL1, RL2 respectively.
These should be left unplugged at this stage.
WARMUP
600s
With power applied the system should undertake its power up sequence and
then commence a warm up period. The warm up period is there to allow
connected detectors to stabilise before operation. Note that certain detector
types, Oxygen sensors in particular may take up to 2 hours to fully stabilise.
During the warm up period check that each connected detector or device has power and
communication. The following diagram shows the three main terminal PCB types for detectors and I/O
interface nodes and the relevant check points.
Toc-625
Addressable I/0
Port 3
24V DC
B
A
GND
T106P Pellistor
Flammable Gas
Detectors
T107 Addressable
I/O Node
T102/3 Toxic
IR/Oxygen Comms
Module
ZERO
F
AUL
T
CAL
360
CHASS
CHASS
CHASS
24V DC
24V DC
24V DC
B
B
B
A
A
A
GND
GND
GND
mA
P
Y
W
mA+
360
CONC
0V
mA-
Toc-625
Earth Point
Sensor
This LED flashes to
indicate power and
comms. With no
comms LED is on
constantly
This LED flashes to
indicate power and
comms. With no
comms LED is on
constantly
This LED flashes to
indicate power and
comms. With no
comms LED is on
constantly
Warm Up Period
Page 11 of 25
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