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PLC Controlled Mine Doors

Designed specifically for actual mine operating conditions, our PLC controlled mine doors adopt mature and stable industrial control technology to provide safe, reliable, and convenient automated passageway management solutions for mines. As one of the most widely used automated mine door products on the market, our doors have been successfully applied in hundreds of mines nationwide with Mean Time Between Failures (MTBF) exceeding 80,000 hours, making them an ideal upgrade replacement for traditional manual doors.

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Product Introduction

Precision and Reliable Control

Adopts industrial-grade PLC core controller with high-precision sensors, achieving precise door position control with accuracy ≤±2mm. Supports manual/auto control mode switching, with response time ≤1s in automatic mode to meet daily passage and rapid passage requirements in emergency situations.

Completely solves problems of traditional manual doors such as cumbersome operation and delayed response, improving mine passage efficiency by 25%.

Technical Specifications

Parameter	Specification
Control Method	PLC Automatic Control / Manual Control
Position Control Accuracy	≤±2mm
Response Time	≤1s
Explosion-Proof Rating	Exd II BT4
Linkage Interface	RS485
Maximum Management Quantity	32 units
Mean Time Between Failures (MTBF)	≥80,000 hours

Multiple Safety Protection

Adopts Exd II BT4 explosion-proof design with triple safety protection mechanisms: infrared anti-pinch detection, obstacle blocking alarm, and overload automatic shutdown.

During door operation, if personnel or obstacles are detected, the door will immediately stop and reverse open to ensure underground personnel safety. Equipment has passed national explosion-proof certification and can operate safely in environments containing explosive gases.

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Intelligent Linkage Function

Supports linkage control with mine ventilation systems, personnel positioning systems, gas monitoring systems, etc. When gas concentration exceeds the limit, the system automatically closes relevant tunnel doors to prevent gas diffusion;

when a fire alarm is triggered, the system automatically opens all emergency exit doors to guide personnel to evacuate quickly. Centralized control of multiple doors via RS485 bus, capable of managing up to 32 door devices simultaneously.

Convenient Operation & Maintenance

Equipped with a 4.3-inch LCD screen, displaying real-time door status, operating parameters, fault information, etc. Supports USB disk data export and local data storage, enabling equipment health diagnosis and fault troubleshooting through simple operations.

Equipment availability increases to 99.2%, transforming traditional "post-failure maintenance" model to "preventive maintenance" model, reducing annual maintenance costs by 50%.

We support customized services. Please contact us for more information.

Email: a@rlycn.com
WhatsApp: +86 15725947771

Economical and Practical Design

Modular assembly structure enables individual replacement of core components, reducing maintenance costs by 60% compared to traditional manual doors. Total lifecycle cost is 45% lower than traditional manual doors, complying with national green mine construction standards and creating good economic benefits for mines.

Application Cases

Large Coal Mine Application

Dozens of PLC controlled mine doors applied in multiple main tunnels, achieving linkage control with mine ventilation system and gas monitoring system. When gas concentration exceeds the limit, door automatic closing response time ≤1s, effectively preventing gas diffusion and improving mine safety level.

Metal Mine Application

Multiple sets of PLC controlled mine doors applied in deep mines, cooperating with personnel positioning system to realize automatic door operation. Mine passage efficiency improved by 25%, reducing annual manual operation costs by hundreds of thousands of yuan.

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Modular Mine Doors