FireClass J400REP - Connecting Extinguishment Modules

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Connecting Extinguishment
Modules
The wiring diagram in Figure 19
shows an Extinguishment Module
connected to the Control panel.
The EM inputs (Manual Extingui
-
shment) and IE inputs (Inhibit Extin
-
guishment) accept Normally-Open
control buttons with 680 ohm contact
resistance.
Wiring description:
Connect a 3900 ohm, 1/4 W resistor
(109) between terminal [NO] and ter
-
minal [C] of the last control button.
The PS input accepts pressure swit
-
ches with Normally-Open output and
680 ohm contact resistance.
Wiring description:
Connect a 680 ohm resistor (111) bet
-
ween one of the pressure switch ter
-
minals and the [+] terminal of the PS
input.
Connect (as near as possible to the
last pressure switch connected to the
PS input) a 3900 ohm, 1/4 W resistor
(109) in parallel to the [+] and [–] termi
-
nals of the PS input.
Extinguishment Modules are unable
to supply the high current draw requi-
red by Electrovalves, therefore, instal-
lation of an external Power Station is
required.
Wiring description:
The Extinguishment Module is unable
to supply the current draw of the PR
and AE Outputs, therefore, it will be
necessary to connect the 24P input to
the Switching Power Supply of the
Control panel, or to an external Power
station.
The PR output (Pre-Extinguishment)
and AE output (Activated Extingui
-
shment) accept signalling devices that
operate at 24V.
Wiring description:
Connect (as near as possible to the
last device connected to the output)a
3900 ohm, 1/4 W resistor (109)inpa
-
rallel to the [+] and [–] terminals of the
output.
Connect a 1N4007 diode or similar,
between the positive inputs of the de
-
vices connected to the PR and AE,
and the [+] terminals of the latter.
INSTALLING THE CONTROL PANEL 33
O2
EM
PS
NO
C
NO
C
NO
C
NO
C
IE
EV
PR
24P
AE
–
+
HALON
WEAR THE MASKES
–
+
HALON
WEAR THE MASKES
–
+
HALON
SECONDS
–
+
HALON
SECONDS
NO
C
Manual
Extinguishment
Control Buttons
680 W
680 W
680 W
680 W
Power Supply
Station
Control Panel
Power Supply
Inhibit
Extinguishment
Control Buttons
Extinguishment
Gas
Pressure switch
Extinguishment Gas
Electrovalve
Optical-
Acoustic
Signalling
Optical-
Acoustic
Signalling
110
110
109
110
111
109
109
109
109
Figure 19 Wiring diagram of an Extinguishment Module: 109) 3900 ohm,
1/4 W EOL Resistor (orange-white-red-gold); 110) 1N4007 Diode or similar;
111) 680 ohm (blue-grey-brown-gold)