AEC2302a Gas Detection Controller System

Short Description:

A-Bus signal transmission, with strong system anti-interference capability and cost-efficient wiring function, install convenient and efficient;

Real-time gas concentration (%LEL/ppm/%VOL) monitoring interface or time display interface for user’s choice;

Free setting of two level alarm values and three alarming types (rising/falling/two-level);

Automatic calibration, and automatic tracing of sensor ageing;

Automatically monitoring failure; correctly showing the failure location and type;

Product Detail

Product Tags

Technical Specifications

Operating voltage  AC176V~AC264V (50Hz±1%)
Power consumption  ≤10W (excluding supporting equipment)
Environmental condition for operating  temperature-10℃~+50℃, relative humidity≤93%RH
Signal transmission  four-bus system (S1, S2, +24V and GND)
Signal transmission distance  1500m (2.5mm2)
Types of gas detected  %LEL, ppm and %VOL
Capacity  total number of detectors and input modules≤16
Number of expandable output modules  ≤16
Adaptive equipment(gas detectors)  GT-AEC2331a, GT-AEC2232a,GT-AEC2232bX/A,GQ-AEC2232bX/A
Input module  JB-MK-AEC2241 (d)
Output module  JB-MK-AEC2242 (d)
Fan linkage boxes  JB-ZX-AEC2252F and JB-ZX-AEC2252F/M
Solenoid valve linkage boxes JB-ZX-AEC2252B and JB-ZX-AEC2252B/M
Output  four sets of relay contact signals, with the capacity of 3A/DC24V or 1A/AC220V RS485 bus communication interface (standard MODBUS protocol)
Alarm setting  low alarm and high alarm
Alarming mode  audible-visual alarm
Display mode  nixie tube
Boundary dimensions (length ×width ×thickness) 420mm×320mm×120mm
Mounting mode  wall-mounted
Standby power supply  DC12V /4Ah ×2

Major Features

● Bus signal transmission, strong system anti-interference capability, cost-efficient wiring, convenient and efficient installation;

● Real-time gas concentration (%LEL/ppm/%VOL) monitoring interface or time display interface for user’s choice;

● Free setting of two level alarm values and three alarming types (rising/falling/two-level);

● Calibrate and trace the sensor aging automatically;

● Fault automatic monitoring; indicate the fault location and type correctly;

● Strong logic programming and free configurations of output modules can realized remote automatic control over various kinds of external equipment; four programmable emergency buttons can manually output control signals;

● Strong memory: historical records of the latest 999 alarming records, 100 failure records and 100 startup/shutdown records, which will not be lost in case of power failure;

● RS485 bus communication (standard MODBUS protocol) interface to realize communication with the host control system and networking with the fire and gas network system, to improve system integration.


1. Side lock
2. Cover
3. Horn
4. Bottom box
5. Bus connection terminal
6. RS485 bus communication interface
7. Relay connection terminal
8. Incoming hole
9. Power supply terminal
10. Grounding terminal
11. Switch of main power supply
12. Switch of standby power supply
13. Switch power supply
14. Standby power supply
15. Control panel

Panel Marks And Mounting Instructions

● Make 4 mounting holes (hole depth: ≥40mm) in a wall as per the requirements for bottom board mounting holes (hole symbols 1-4);

● Insert a plastic expansion bolt into each mounting hole;

● Fix the bottom board onto the wall, and fasten it onto the expansion bolts with 4 self-tapping screws (ST3.5×32);

● Hang the welding hanging parts on the back of the controller onto location A at the bottom board to complete mounting of the controller.

Wiring Diagram

N, and L: AC220V power supply terminals

NO (normally open), COM (common) and NC (normally closed): (4 sets) output terminals for relay external control signals output terminals

S1, S2, GND and +24V: (4 sets) bus connection terminals (≤64 points for each set)

A, GND and B: RS485 communication interface connection terminals

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