KK-642.014 Rev.No:1 01.08.12 Page | 4
4- PANEL INPUTS
4.1 Mains Power Supply
The panel is designed to operate on 220 V AC 50Hz. Earth connections must be made to earth terminal and
earth resistor must be less than 10 Ohms. The mains power supply of the panel must be via an independent
self-resetting fuse rated 5A 220 V AC. This fuse must be separate from the other fuses and a caution note
should be written such as
“ATTENTION! GAS ALARM CONTROL PANEL FUSE. DO NOT REMOVE” to
ensure safe operation of the panel.
Recommended cable types are 3x2.5 NYM or 3x2.5 NYA. Connections should be same as Annex.A Figure1.
Do not connect or disconnect the loop, mains supply input and PCB connections while the panel is energized
to avoid an electric shock.
4.2 Batteries
Batteries provide continuity of operation during a failure of the mains power supply. The panel has an
automatic battery charger circuit. The panel uses 2 units of 12V DC 7Ah dry type batteries. Connection
diagram can be seen in Annex.A Figure-2.
4.3 Channel Inputs
These inputs provide power to the gas or fire detectors and transmit the status of gas/fire alarm, short circuit
and open circuit. In each channel input 4-20mA or conventional fire detector connection can be made.
4.3.1 Fire detectors and MCPs
For each zone line at most 20 units of detector and infinite number of button can be connected.
The characteristics of the cable are dependent on the length of the loop: for a loop of 0-500 metre long, use
1x2x0.8+0.8J-Y(st)Y cable, for a loop of 500-1500 metre long use 1x2x1.5+0.5J-Y(st)Y. A 6.8 k
Ω resistor
must be connected as an end-of-line element.
Channel jumper setting should be set as fire. If zener barrier will use, the jumper of zener barrier must be
adjust accordingly. Connections are seen as in Annex. A
– Figure-3.
4.3.2 4-20mA input
It provides 28V DC supply voltage for both fire and gas detectors. It follows 4-20 mA analogue current input
via 100 Ohms resistor. It is possible to mount 2- or 3- wire gas or flame detectors, in either sink or source
mode. Control panel can make the tracking of the analogue values between 4mA-21.5mA. When the
currents exceed 21.5 mA, panel gives the fault of
“OVERRANGE”. Connection can be seen from Annex. A
figure -9.
4.3.3 Connections of 4-20mA converter card
1- The jumper settings on both converter card and gas alarm control panel adjusted as
“SOURCE” or
“SINK”. The point here is both adjustments should be same.
2-
Before connecting 4-20 mA card to the panel, from the panel menu, channel device type must be
selected as
“det 4-20 srce” or “det 4-20 sink”.
3-
Before doing the signal connection of converter card to the panel, card is energized from the panel.
4-
Voltmeter
’s probes, are connected to (+) and (-) supply terminals of CON1 socket go to detector. Value
seen on Voltmeter is adjusted to 2V by using TP3(detector voltage potentiometer.) potentiometer.
5- Then converter card
’s energy is turned off. When all the connections are made, it is reenergized.
6- Voltmeter
’s probes are connected to the test points TP4 and TP3. Value seen on the voltmeter is
brought to zero by using TP4 (balance potentiometer)O. Make sure that 0 value see continuously.
7- Voltmeter
’s probes are connected to the test points TP2 and TP1. Value seen on the voltmeter is
brought to 40mV by using TP2 (zero potentiometer).
8-
After these settings applied, the measured value should be read as 0.
