RELAY SETTINGS
SW2 DIP-SWITCH allows to choose between various relay settings.
COLLECTION EXCLUSION:
Setting SW1 it is possible to enable/disable the suppression of the signaling of any umderrange in the input
signal in the corresponding zone.
Zone 1 Zone 2
(sensor) (sensor)
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After making all the connections and configurations, the system can be powered
Micro-switches 1 Positive safety
Micro-switches 2 Working mode of the main alarm relay
Zone 1 Zone 2
(sensor) (sensor)
SW1.1
ON: Sensor 1 dead band suppression DISABLED
OFF: Sensor dead band suppression ENABLED
SW1.2
ON: Sensor 2 dead band suppression DISABLED
OFF: Sensor dead band suppression ENABLED
WARNING!
> This control unit is NOT built for installation in ATEX classified areas
> To meet the requirements as a control unit according to the standard EN 60079-29-1: 2016, the
DIP switches on the control unit must be set to: SW2.1: ON, SW2.2: OFF, SW3.2: ON, SW4.2: ON.
> All the wiring of the remote sensors must be made using wires with a minimum section of 1.5
mm2 and no longer than 25 m. Do not use the same conduit for signal and power cables.
> In case of installation in the presence of strong EMC disturbances, the shielded cables use is
strongly recommended. The screen must be connected to the 'Gnd' terminal of the interested
area only on the side of the control unit.
> The appliance must be connected to the power supply by means of a switch capable of
disco nnectin g the poles in complian ce with cu rrent safety standards and with a co ntact
separation of at least 3 mm in all poles.
> The installation and electrical connections of this appliance must be carried out by qualified
technicians and in compliance with the current technical and safety standards.
> Be sure to turn off the power before wiring the device.
> Safety depends on the installer (whose responsibility is to set up a detection system in
compliance with existing standards, both European and national) to choose the correct type of
loads to be connected to the control unit and the correct configuration of the system parameters.
In case of doubt, please contact the distributor.
Switch 1 – Selection of the positive safety
Position ON: the positive safety function is enabled.
The relay is energized after the warm up phase and turns off when the BX280-AX is main alarm
Position OFF: the positive safety function is disabled.
The relay is energized only when the BX280-AX goes into the main alarm
Switch 2 - Working mode, selection of the main alarm relay
Position OFF: the relay remains closed until the RESET button is pressed. (continuous)
Position ON: the relay remains closed for 20 seconds, and then disenergizes. (impulse)
