Protection and Control Device of Underground Coal Mining Belt Conveyor

Basic Info.

Model NO.	KHP345
Specification	L*D*H: 2400*811*1155
Trademark	Wantai Group
Origin	China
HS Code	8537209000
Production Capacity	1000sets/Year

Product Description

KHP345Mining belt conveyor protective control device (Multi-function integrated electric appliance)
Application
This device PLC as the control core, 7 inch Chinese Chinese display embedded computer as man-machine interface. It is specially designed for the belt conveyor, which integrates the driving, protection, lighting power and other functions of the belt conveyor to realize the starting and stopping control, automatic tensioning, coal feeder control, brake motor control, belt winding machine control, deviation, overtemperature, skidding and other basic protection, starting warning and fault warning functions of the belt conveyor.
Technical Parameters

Rated working voltage	1140, 660	V
Rated operating current	1200	A
Rated frequency of power supply	50	HZ
Intrinsically safe output voltage(For use by external sensors)	12	V/DC
Safety parameters	U20: DC12.5V I20:1300mA L20:0.1mh C20:47 muf
Steady value of intrinsic current	≤40	MA
Relay output contact capacity	AC250V/5A
Control mode	near control, far control and network control
Active sensor	Speed, Temperature, Coal level, Gas, Weighing sensor
Passive sensor	Deviation, Emergency stop, Tear sensor

Technical advantages and functional characteristics1. Integrating the main drive of rubber belt, the control of tensioning winch, the control of brake brake, the control of belt roller and 4.0kva lighting source;2. 8 combination is composed of 2×400A soft starting circuit and 4×120A +2×80A (total current no more than 400A) straight starting circuit, each circuit has independent monitoring and protection unit, 6 combination is composed of 2×400A soft starting circuit and 2×120A reversible +2×80A straight starting circuit, each circuit has independent monitoring and protection unit;3. Eight kinds of protection sensors can realize eight kinds of protection of the transport plane, with the intelligent positioning functions of deviation, pulling wire and longitudinal tearing;4. It has the function of fault alarm, and can realize the starting warning and fault alarm along the line by connecting with the intrinsically safe expanded broadcast telephone.5. PLC is adopted as the control core to facilitate centralized network control and support Profibus and industrial Ethernet communication;6. The embedded human-machine interaction interface can display the operating conditions of each device, motor current and temperature real-time display and fault state display, with the functions of fault record query, current and temperature curve query, etc.;7. The pilot circuit of the equipment is intrinsically safe circuit, which can effectively prevent spontaneous starting accidents caused by short circuit or grounding of the control circuit.