BEINAT BX280-AX Manual Download Page 4 | Manualshive

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BEINAT BX280-AX Manual Download Page 4

{a} OVERVIEW

-  Power  supply  110/240  VAC
-  Controls  up  to  2  remote  sensors
-  Manages  explosive  and  toxic  gases.
-  Various  possibilities  of  configuration  parameters
-  Status  indications  with  LED.
-  Output  signals  provided  through  3  driving  relays
-  wall  support  6  DIN  modules.
-  Conforms  to  the  operating  regulations  EN60079-29-1

{b} GENERAL DESCRIPTION

The  BX280-AX  is  a  control  unit  capable  to  control  the  concentration  of  gas  up  to  2  input  channels,  each  of
which  can  be  connected  via  a  4-20  mA  communication  to  a  toxic  or  explosive  gas  detection/measurement
device.  The  control  unit  is  built  with  the  following  I/O  interfaces.

1)  RED  LED.
When  it  is  on,  the LED  flashes for  the  first 100  seconds,  which indicates  that  the control  unit  is  in  the warm  up
mode.  After  this  phase,  the  control  unit  enters  detection  mode.
When  this  LED  is  blinking,  the  BX280-AX  is  not  able  to  detect  gas.

2)  BATTERY  LED.
This  LED  lights  up  when  the  BX280-AX  is  powered  by  the  battery  in  the  absence  of  mains  and  flashes  when
the  battery  voltage  is  less  than  10.8  V.

3)  LED  SCALE  CONCENTRATION  GAS.
These  LEDs  light  up  in  sequence,  based  on  the  increase  to  the  gas  dispersed  in  the  environment.
a)  When  the  first  led  turns  on,  the  gas  concentration  level  has  reached  the  first  pre-alarm  threshold
b)  When  the  second  led  turns  on,  the  gas  concentration  level  has  reached  the  second  pre-alarm  threshold
c)  When  the  third  led  turns  on,  the  gas  concentration  level  has  reached  the  main  alarm  threshold
This  LED  is  the  "latching"  type,  it  stays  on  to  indicate  the  alarm  presence  stored  in  MEMORY,  according  to  the
current  operating  regulations

LED  OVERLOAD
4)  The  control  unit  is  equipped  with  electronic  OVERLOAD  protections,  to  avoid  irreparable  damage.
LED  OVERLOAD  SENSOR
This  LED  lights  up  when  there  is  a  short  circuit  or  excessive  absorption  in  the  power  supply.
LED  OVERLOAD  BATTERY
This  LED  lights  up  when  there  is  a  short  circuit  or  excessive  absorption  in  the  backup  battery  supply

Control Unit from 1 to 2 Conventional sensors BX280-AX

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Summary of Contents for BX280-AX

Page 1: ...ty Select the gas type to be detected toxic or explosive Choose the relay functioning mode pulsed or continuous Choose deadband exclusion mode A TEST button checks the efficiency of both the unit and connected probe to ensure total control of the BX280 AX Thanks to the Omega type format small and large systems can be built by exploiting the modularity of the DIN rail in the previously set electric...

Page 2: ...the appliance Cleaning Never clean the device with chemical products If necessary wash with a moist cloth Technical Specifications Mains Power 110 230VAC 50 60Hz 10 Secondary Power Through Battery max 1 2 Ah Optional not provided 12 V 10 Battery Charger max 1 2 Ah controlled by the microprocessor The battery does not need maintenance Power Demand 6 W max 230V Power Demand 5 W max 12 VDC Relay Cont...

Page 3: ...SG895 Pellistor ATEX Zone 1 See catalogue 0 100 LEL 4 20 mA 5 Y e s N O SG580 Catalyt ic I P 6 6 Zone 2 See catalogue 0 100 LEL 4 20 mA 5 Y e s N O SGF100 Catalytic I P 6 4 Zone 2 Methane 0 100 LEL 4 20 mA 5 Y e s Y e s SGF102 Catalytic I P 6 4 Zone 2 L P G 0 100 LEL 4 20 mA 5 Y e s Y e s SGF104 Optical Fluores I P 6 4 Zone 2 Oxyg en In 4 20 mA 5 Y e s Y e s SGF106 SemiCondut I P 6 4 Zone 2 F R E ...

Page 4: ... by the battery in the absence of mains and flashes when the battery voltage is less than 10 8 V 3 LED SCALE CONCENTRATION GAS These LEDs light up in sequence based on the increase to the gas dispersed in the environment a When the first led turns on the gas concentration level has reached the first pre alarm threshold b When the second led turns on the gas concentration level has reached the seco...

Page 5: ...rding to current performance standards 12 DIP SWITCH of the deadband suppression of the sensor 1 and 2 Setting these two switches ON or OFF it is possible to enable or disable the suppression of the signaling of any sub range in the input signal in the corresponding input Instead over ranges will always be reported Both conditions are indicated by the flashing of the Explosive Gas LED of the corre...

Page 6: ...sensors as shown in the figure Power supply 110 230 VAC C NC NO C NC NO C NC NO PH N 4 5 6 7 8 9 10 Fault Pre Alarm Main Alarm ACTIVATION AND DEACTIVATION OF THE SENSORS To enable disable the sensor 1 act on the first switch of SW4 first DIP SWITCH from left To enable disable the sensor 2 act on the first switch of SW3 second DIP SWITCH from left When a sensor is excluded all the memories will be ...

Page 7: ... 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 disconnecting the poles in compliance with current safety standards and with a contact separation of at least 3 mm in all poles The installation and electrical connections of this appliance must be carried out ...

Page 8: ...on of gas gradually increasing from the enabled sensors and it is therefore possible to control the switching on and off of the LEDs and that all switch relay enabling the loads connected to them Depending on the input signal of the remote sensors the control units can be found in the following working condition NORMAL MODE the control unit receives a signal from the sensors corresponding to a gas...

Page 9: ...mA normal operation 21 mA Over range 23 mA fault The following figure shows the conversion between mA and the corresponding gas concentration 0 60 120 200 240 300 337 mA Fault zone Over range area Under range area Fault zone 7 2 0 10 4 16 8 20 14 7 4 3 6 22 ppm Linear 5 0 4 8 13 16 20 22 mA Fault zone Over range area Under range area Fault zone 7 2 0 10 4 16 8 20 14 4 4 3 6 22 LEL Linear 5 3 8 3 8...

Page 10: ...s and eventual battery Page 10 Example of a label WARNING Before connecting to the mains power ensure the voltage is correct Carefully follow the instructions and the connections according to Regulations in force keeping in mind that the signal cables should be laid separate from the power cables An automatic cut off switch appropriately identified as devicesectioning of the detector should be inc...

Page 11: ...oid valve Normally Closed with Positive Safety Connections of a solenoid valve Normally Closed without Positive Safety Page 11 110 230 VAC Electrical connection example If a 12Vdc solenoid valve is connected to BX280 AX and it does not work well Direct connection of 12VDC solenoid valves or sirens to BX280 AX is not possible An external power unit must always be used BX280 AX gives a max current o...

Page 12: ...N 230 VAC 230 VAC If a 12VDC solenoid valve is connected to BX280 AX and it does not work well Direct connection of 12VDC solenoid valves or sirens to the BX280 AX is not possible An external power unit must always be used The BX280 AX gives a max current of 50mA Electrical Connections Connections to Positive Safety disabled and an external power supply for valve control and siren 12VDC ...

Page 13: ...es of remote probes to this unit Therefore they should be positioned at different heights depending on the type of gas to be detected These heights are 30 cm from the lowest point of the floor in order to detect Heavy gases L P G etc 30 cm from the highest point of the ceiling in order to detect light gases Methane etc 160 cm from the lowest point of the floor in order to detect volatile gases CO ...

Page 14: ... powered by the battery check that the 12Vdc power is correctly connected If the Fault LED lights up Check that the connecting cables from the BX280 ax to the probes are intact that the probes are properly powered and that the signal cable is correctly connected If the Over Load Probe LED lights up Check that the power polarity has not been inverted that no short circuit is present that the probes...

Page 15: ...arked by two red parallels To enable maintenance mode based on regulations a manual command must be performed Follow the instructions below Once the manual command has been executed proceed as follows Plant maintenance RESET TEST Maintenance Test The simultaneous and prolonged pressing for 5 seconds of the TEST and RESET keys enables the test on mode in which the control unit does not switch the g...

Page 16: ...xample sales points in case you buy a new and similar product local collection points waste collection center local recycling center etc By ensuring this product is disposed of correctly you will help prevent potential negative consequence for the environment and human health which could otherwise be caused by inappropriate waste handing of this product The recycling of materials will help to cons...

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