KXJ1140 Mining Explosion-proof and Intrinsically Safe Programmable Control Box
The KXJ1140 Mining Explosion-proof and Intrinsically Safe Programmable Control Box (hereinafter referred to as the Control Box) is the multi-functional general-purpose monitoring and control node (in the mining industrial network). It has the specific design of explosion-proof, seismic resistance and intrinsically safe output. It is mainly used for centralized control of the main transport belt of the mine, and can also be taken as the monitoring node for mining. The Control Box input is AC 1140V, the digital quantity control signal is DC intrinsically safe 18V, the analog input and output are both intrinsically safe, and the voltage of digital quantity control signal can be appropriately changed according to project requirement.
1 Rated Operating Voltage:
Operating voltage:1140V.AC/660V.AC/127V.AC, operating current: ≤0.5A.
2 Input and Output Ports
2.1 Input Port
1) 4-way analog quantity: (4 to 20) mA.
2) 40-way passive switching signal: when disconnected, the leakage resistance between two output ends shall not be less than 100kΩ. When closed, and the input current is 2mA, the output terminal voltage shall not be higher than 0.5V.
2.2 Output Port:
1) 16-way relay output, contact capacity: 250V/5A.AC.
2) 16-way active switch signal: high level 18V, low level 0V.
3 Function:
According to the field service conditions, control state of the output port by setting the input port state.
4 Display:
LCD, realizing various function setting and status indication.
5 Intrinsically Safe Power Output Parameters (see Table 1):
Serial No.
Parameter Name
Value
Value
1
Rated Output Voltage
18V.DC
15V.DC
2
Rated Output Current
300mA
300mA
3
Voltage Output Range
(17.5-18.5) V.DC
(14.5-15.5) V.DC
Number of Output Ways
2-way
1-way
The Control Box mainly consists of the main explosion-proof chamber, human-machine operation LCD touch screen, incoming and outgoing wiring chamber and intrinsically safe chamber. The upper part includes the main chamber and wiring chamber, and the lower part is the intrinsically safe chamber. The main explosion-proof chamber adopts a bolt fastening structure, so as to facilitate equipment installation, adjustment and maintenance. The PLC module is installed at the front of the master control explosion-proof box, and the power module box at the lower. The operation button and extra-large LCD touch screen are installed at the front door panel, and the operation interface is simple and friendly. The voice module, horn and wiring terminal are installed in the intrinsically safe chamber.
a) Ambient temperature -10℃ to +40℃ (40oF to 104oF)
b) The elevation shall not exceed 2,000m
c) The ambient relative humidity shall not be larger than 95% (at +25℃/77oF);
d) In the mine shaft with methane-air mixture
e) At the place without significant vibration or impact
f) At the place without water drip
g) Horizontal installation (the inclination does not exceed 15°)
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