Mining control box
Product information of mining control box:
1、 Core functions and explosion-proof design
Explosion proof performance
Compliant with the national Class I explosion-proof standard (Exd Ⅰ Mb), designed specifically for coal mine gas environments, the explosion-proof shell can isolate internal electrical sparks from external explosive gas contact.
The protection level reaches IP55, suitable for underground environments containing gas and coal dust.
Control system architecture
Control mode:
Split type control: It needs to be equipped with a KXBC series dedicated control box (such as KXB-8/660 (380) DZ type), supporting "on-site/remote control" switching and PLC/DCS system integration.
Integrated intelligent control: Integrated explosion-proof electric device (such as ZJK/ZBK type), built-in 485 communication interface, no need for external control box.
Signal compatibility:
Remote control mode supports 24V switch signals (jog/continuous control) or 4-20mA analog signals (adjustable type).
Security protection mechanism
Multiple protection: equipped with short circuit, overload, undervoltage, leakage, over torque, and phase failure protection functions.
Status monitoring: Real time feedback on valve opening and switch in place status, and visualized display through indicator lights (power/valve open/valve closed/fault).
2、 Key parameters and technical characteristics
Project parameter description
Power supply voltage AC 380V/660V/1140V (adapted to fluctuations in coal mine power grid)
Applicable valve types include gate valves, globe valves, butterfly valves, and other linear motion valves
Working temperature -5 ℃~+40 ℃ (adaptability to harsh underground environments)
Explosion proof mark Exd Ⅰ Mb (coal mine specific) or dIIBT4 (chemical flammable environment)
The communication interface supports RS485 communication and is compatible with the pump room automation system
3、 Typical application scenarios
Underground coal mine
Automatic control of water pump room: matched with electric gate valves (such as MKZ941H series) to achieve remote start stop and flow regulation of drainage system.
Gas pipeline safety control: Prevent pipeline overpressure risks through over torque protection and valve status monitoring.
Key points for installation and debugging
Wiring specification: It is necessary to connect the torque switch contacts (TSO/TSC), travel switch contacts (LSO1/LSC1), and potentiometer signals of the electric device.
Initial debugging: Manually open the valve to the half open position, verify the motor phase sequence before powering on to prevent equipment damage.
选型建议
