Duomo GS300M Manual - Página 4

Procurar online ou descarregar pdf Manual para Controlador Duomo GS300M. Duomo GS300M 12 páginas. 3 channel gas detection controller

Configuring the GS300M

The GS300M has three pairs of DIP switches on the PCB. The left switch on first three double switches is used to enable

or disable the sensor for that respective zone. The right switch is used to configure the controller to indicate whether the

connected sensor is for explosive or toxic gas.

The GS300M can be configured to provide several modes of operation. The configurable parameters are:

Left switch on any of the 1st 3 double DIP switches

The GS300M will not look for a sensor on a given zone if the switch is moved to the OFF position. It

is not necessary to remove the return cable from the sensor.

Example shows Zone 1 On, Zone 2 On and Zone 3 Off.

Right switch on any of the 1st 3 double DIP switches

Toxic or explosive levels. These are labelled as GAS or CO on PCB. The symbols on the front fascia

of the detector are EN standard symbols and refer to any explosive or toxic gas. If toxic gas, e.g.

carbon monoxide is to be sensed on a given zone move the switch to the CO position. If explosive,

e.g. natural gas, LPG, hydrogen etc. move the switch to the GAS position.

Example shows Zone 1 Explosive, Zone 2 Toxic, Zone 3 Explosive,

Left switch on 4th double DIP switch

Positive safety determines the condition of the main alarm relay and hence the operation of the gas

valve. When it is 'ON' the relay is in a normally open state. When it is 'OFF' the relay is in a normally

closed state. NOTE: This affects how the gas valve operates and means that you may need to

change how it is wired to the GS300M. Example shows Positive Safety on

Right switch on 4th double DIP switch

Main Alarm relay actuation method. This can be configured to provide either a permanent or a

temporary alarm operation. When the main alarm is actuated in an alarm condition if the switch is in

the 'C' position, the relay will remain in this position for the entire period in which the gas concentration

remains above. If the switch is in the 'I' position the main alarm relay will actuate for 5 seconds and

then will return to the running condition.The indication on the panel fascia and the audible alarm will

still indicate main alarm. This mode of operation is used when using manual reset gas valves and

battery back-up systems for extending standby battery life. Example shows detector configured

for a permanent main alarm

Main Alarm Relay

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Main Alarm switch in 'l' position

Gas Sensed

5 seconds

Time

Gas Sensed

Main Alarm Relay

Main Alarm switch in 'C' position

Time