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Mining Controls

Caterpillar is the global market leader and supplier of complete longwall systems. All over the world, our equipment and systems are meeting the demands of underground mining under the most stringent conditions. Adapted to the mining challenges faced by our customers today, Cat customized systems range from hydraulic roof supports, automated plow systems, shearers, face conveyors and drive systems to automation and roof support carriers.Caterpillar delivers your system of choice, from low to high seam heights, for the longest longwalls and highest production demands.

PMC-R Roof Support Control

The intrinsically-safe Cat® PMC-R control units are used on shearer or plow faces to provide medium to high level of longwall automation. Each Roof Support needs to be equipped with one PMC-R control unit and a solenoid driver to operate the in-shield hydraulic functions and a set of peripheral components, like sensors for pressures and shield advance. The PMC-R can control and display all functions of a shield and is simultaneously the interface between operator and machine (HMI). The PMC-R system can control all individual shield functions based on a reliable network. As an interactive system, it allows the user to execute single shield functions as well as automatic functions. Important process values are continuously displayed as feedback for the operator.

  • Specification Summary

  • Operating System µITRON RTOS
  • Processor 16Bit Microcontroller TMP91CW12AF, 27MHz, internal RAM 4Kbytes, ROM 125Kbytes
  • RAM Memory 2Mbytes CMOS Static RAM, 4Mbytes Flash
  • Height 116.0 mm
  • Product Brochure

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Product Details

Components

Operating System µITRON RTOS
Processor 16Bit Microcontroller TMP91CW12AF, 27MHz, internal RAM 4Kbytes, ROM 125Kbytes
RAM Memory 2Mbytes CMOS Static RAM, 4Mbytes Flash

Dimensions (Approximate) – Rear Side View of the PMC-R

Height 116.0 mm
Length 320.0 mm
Width 178.0 mm

Global Certifications

Types Europe: ATEX
Types U.S.: MSHA
Types More certifications on demand
Types Australia: IECEx, ANZEx
Types China: MA
Types Russia: GOST

Dimensions (Approximate) – Front View of the PMC-R

Height 116.0 mm
Length 320.0 mm
Width 178.0 mm

Dimensions (Approximate) – Solenoid Driver Module

Height 37.0 mm
Length 347.0 mm
Width 68.0 mm

Pin Assignment of Solenoid Driver Module Type SD1

Socket S101 – Pin 1 12.0 volts
Socket S101 – Pin 2 (Solenoid 1) TX
Socket S101 – Pin 3 (Solenoid 2) RX
Sockets S301-S306 – Pin 1 12.0 volts
Sockets S301-S306 – Pin 2 (Solenoid 1) GND1
Sockets S301-S306 – Pin 3 (Solenoid 2) GND2
Sockets S301-S306 – Pin 4 GND
Sockets S307-S311 – Pin 1 12.0 volts
Sockets S307-S311 – Pin 2 (Solenoid 1) GND1
Sockets S307-S311 – Pin 3 (Solenoid 2) GND2
Sockets S307-S311 – Pin 4 0 - 1 mA; 0.5 - 4.5 V

Electrical Data

Supply Current – Maximum Ratings 2.0 amps
Supply Current – Typical Value 1.0 amps
Supply Voltage – Maximum Ratings 9.5 V - 13.2 V
Supply Voltage – Typical Value 12 V DC

Environmental Data

Temperature – Maximum Ratings -20° C - +40° C (-4° F - +140° F)
Temperature – Symbol Tamb
Temperature – Typical Value 20.0 ° C

Features

  • Robust design (SKK24 sockets, hose cables, steel housing)
  • IP 68 rating (48 hr @ 1 m [3.28 ft] under water)
  • Separate emergence and lock switch
  • HMI with 30 multi feedback keys (sound, pressure point, led light)
  • Two (2) line LCD graphical display
  • Multi language support
  • Maintainability (brass bar mounting, screws from the front)
  • Integrated infrared
  • Up to three (3) separate solenoid driver modules

Exemplarily System Layout of a PMC-R System (Shearer Face)

Main Features PMC-R Control System

  • “Distributed Intelligence in each shield”
  • Wide range of sensors and multiple solenoid drivers
  • Easy diagnosis through communication between PMC®-R controls
  • Various auto sequences
  • Automated conveyor push modes
  • Conveyor pullback functions
  • Automated water spray functions
  • Outrigger steering for conveyor steering (mostly plow faces)
  • Automation of:
- Block anchorage - Flipper - Sliding canopy - Gap shield - Several steering cylinder automation modes dependent on roof conditions

Peripheral Equipment

  • Solenoid Driver Board (minimum one per Roof Support)
  • Pressure Sensor
  • Reed Rod
  • Proximity Switch
  • IR Transmitter and Sensor
  • LED Warning Light
  • IS Power Supply
  • Diverse Data Coupler
  • 3D-Tilt Sensor and 3D-Tilt Monitor
  • Double Solenoid Valve

Solenoid Driver Module

  • The PMC-R solenoid driver module is placed at a distance from the PMC-R in accordance with the modular concept.
  • The solenoid driver module can activate up to 22 valve functions, additional lights and sound modules or relays. As well, additional sensors could be read in by the solenoid driver module.
  • All connectors OS4 type
Built for it