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AEC2305 Small Capacity Gas Alarm Controller

Short Description:

Bus signal transmission (S1, S2, GND and +24V);

Switchable real-time concentration display or time display, for monitoring of combustible gases and steams;

Automatic calibration, and automatic tracing of sensor ageing;

Anti-RFI/EMI interference;

Two alarming levels: Low alarm and high alarm, with the alarm values adjustable;

Processing of alarm signals has priority over processing of failure signals;

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 0℃~+40℃, 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
Capacity  1~2
Adaptive equipment  gas detectors :GT-AEC2331a, GT-AEC2232a,GT-AEC2232bX/A
Input module  JB-MK-AEC2241 (d)
Fan linkage boxes  JB-ZX-AEC2252F
Solenoid valve linkage boxes JB-ZX-AEC2252B
Output  two sets of programmable relay outputs, with the contact capacity of 10A/DC30V or 10A/AC250V
RS485Bus communication interface (standard MODBUS protocol)Alarm setting  low alarm and high alarm
Alarming mode  audible-visual alarm
Indication error  ±5%LEL
Display mode  nixie tube
Boundary dimensions( length ×width ×thickness)  254mm×200mm×90mm
Gross weight  about 4.5kg (including standby power supply)
Mounting mode  wall-mounted
Standby power supply  DC12V /1.3Ah×2
Mounting mode  wall-mounted
Standby power supply  DC12V /1.3Ah ×2

Major Features

● Bus signal transmission (S1, S2, GND and +24V);

● Switchable real-time concentration display or time display, for monitoring of combustible gases and steams;

● Automatic calibration, and automatic tracing of sensor ageing;

● Anti-RFI/EMI interference;

● Two alarming levels: Low alarm and high alarm, with the alarm values adjustable;

● Processing of alarm signals has priority over processing of failure signals;

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

● Two sets of programmable internal linkage output modules and two programmable emergency buttons to automatically or manually control external equipment;

● 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 interface is available for matching any equipment with standard MBODBUS protocol, thus to form a larger gas network management system;

● Simple and convenient operation: all configurations of the system can be completed by one button;

● Beautiful appearance, small volume and convenient installation.

Structure

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

Control panel / Dimensional diagram for the bottom board and the casing

Wiring Diagram

Connection terminals:

L,    and N: AC220V power supply terminals

NC (normally closed), COM (Common) and NO (normally open):  (2 sets) output terminals for relay external control signals output terminals

S1, S2, GND, + 24V: System bus connection terminal

A, GND and B: RS485 communication interface connection terminals

1) Capacity: the total number of detectors and input modules externally connected to the controller shall be not more than 2.

2) In order to control external equipment, there are contact outputs for two sets of relays (namely, internal linkage modules) inside the controller.

The system default setting is that the two sets of relays will output signals whenever a detector gives an alarm.

3) Two sets of internal linkage modules can provide one of the following five output modes:

A. Passive switching value signal output: contact capacity: 10A/AC220V or 10A/DC24V

B. Passive jogging signal output: contact capacity: 10A/AC220V or 10A/DC24V

C. DC24V/200mA level signal output (NO+, COM-)

D. DC24V/200mA impulse signal output (NO+, COM-)

E. Capacitance output (NO+, COM-)

Special note:

Default: “Output 1” and “Output 2”are passive switching value signals.


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