The intrinsically safe Cat® PMC-D control is used on shearer or plow faces to provide high level AFC (armed face conveyor) and plow automation. Each Drive unit needs to be equipped with one PMC-D control unit and equivalent I/O to operate the CST drives or UEL gearbox functions. In such a system a Cat PMC-V provides the Human Machine Interface (HMI) to interfere with the PMC-D controls to operate manual mode, visualize and change parameters and show actual process values. Within a PMC-D system minimum one and typically up to 3 PMC-Vs are in equal operation. The PMC-D system can control extremely sensitive the speed and torque of highly powered AFC CST drive. Using Profibus network all PMC-Ds and PMC-Vs in a system could exchange process data over long distances with high frequency.
Components
| Operating System |
µITRON RTOS |
| Processor |
32Bit RISC Microcontroller TX1940CYAF, 32MHz, internal RAM 10Kbytes, ROM 256Kbytes |
| RAM Memory |
4Mbytes CMOS Static RAM, 4Mbytes Flash |
Electrical Sockets
| Socket 1 – Pin 1 |
Optocoupler Anode |
| Socket 1 – Pin 2 |
Relay Contact NO: a |
| Socket 1 – Pin 3 |
Relay Contact NO: b |
| Socket 1 – Pin 4 |
Optocoupler Cathode |
| Socket 10 – Pin 1 |
+12 V (output) |
| Socket 10 – Pin 2 |
Multi Mode Input 3 |
| Socket 10 – Pin 3 |
+8.2 V (output) |
| Socket 10 – Pin 4 |
GND |
| Socket 11 – Pin 1 |
+12 V (output) |
| Socket 11 – Pin 2 |
Multi Mode Input 6 |
| Socket 11 – Pin 3 |
+8.2 V (output) |
| Socket 11 – Pin 4 |
GND |
| Socket 12 – Pin 2 |
TP a |
| Socket 12 – Pin 3 |
TP b |
| Socket 13 – Pin 2 |
CM-Sensor + |
| Socket 13 – Pin 3 |
CM-Sensor - |
| Socket 13 – Pin 4 |
CM-GND |
| Socket 14 – Pin 2 |
CM-Sensor + |
| Socket 14 – Pin 3 |
CM-Sensor - |
| Socket 14 – Pin 4 |
CM-GND |
| Socket 15 – Pin 2 |
CM-Sensor + |
| Socket 15 – Pin 3 |
CM-Sensor - |
| Socket 15 – Pin 4 |
CM-GND |
| Socket 16 – Pin 2 |
CM-Sensor + |
| Socket 16 – Pin 3 |
CM-Sensor - |
| Socket 16 – Pin 4 |
CM-GND |
| Socket 17 – Pin 2 |
CM-Sensor + |
| Socket 17 – Pin 3 |
CM-Sensor - |
| Socket 17 – Pin 4 |
CM-GND |
| Socket 18 – Pin 2 |
CM-Sensor + |
| Socket 18 – Pin 3 |
CM-Sensor - |
| Socket 18 – Pin 4 |
CM-GND |
| Socket 19 – Pin 2 |
CM-Sensor + |
| Socket 19 – Pin 3 |
CM-Sensor - |
| Socket 19 – Pin 4 |
CM-GND |
| Socket 2 – Pin 1 |
+12 V (A) (output) |
| Socket 2 – Pin 2 |
Serial Interface: RxD_0 |
| Socket 2 – Pin 3 |
Serial Interface: TxD_0 |
| Socket 2 – Pin 4 |
GND |
| Socket 20 – Pin 2 |
CM-Sensor + |
| Socket 20 – Pin 3 |
CM-Sensor - |
| Socket 20 – Pin 4 |
CM-GND |
| Socket 3 – Pin 1 |
+12 V (B) (output) |
| Socket 3 – Pin 2 |
Serial Interface: RxD_B |
| Socket 3 – Pin 3 |
Serial Interface: TxD_B |
| Socket 3 – Pin 4 |
GND |
| Socket 4 – Pin 1 |
+12 V (C) (output) |
| Socket 4 – Pin 2 |
Serial Interface: RxD_C |
| Socket 4 – Pin 3 |
Serial Interface: TxD_C |
| Socket 4 – Pin 4 |
GND |
| Socket 5 – Pin 1 |
+12 V (C) (output) |
| Socket 5 – Pin 2 |
Switch 1 |
| Socket 5 – Pin 3 |
Switch 2 |
| Socket 5 – Pin 4 |
GND |
| Socket 6 – Pin 2 |
Profibus: a (internal) |
| Socket 6 – Pin 3 |
Profibus: b (internal) |
| Socket 7 – Pin 1 |
+12 V (Power Supply) |
| Socket 7 – Pin 4 |
GND (Power Supply) |
| Socket 8 – Pin 1 |
Multi Mode Input 4 |
| Socket 8 – Pin 2 |
Multi Mode Input 1 |
| Socket 8 – Pin 3 |
+8.2 V (output) |
| Socket 8 – Pin 4 |
GND |
| Socket 9 – Pin 1 |
Multi Mode Input 5 |
| Socket 9 – Pin 2 |
Multi Mode Input 2 |
| Socket 9 – Pin 3 |
+8.2 V (output) |
| Socket 9 – Pin 4 |
GND |
Global Certifications
| Types |
Europe: ATEX |
| Types |
U.S.: MSHA |
| Types |
More certifications on demand |
| Types |
Australia: IECEx, ANZEx |
| Types |
China: MA |
| Types |
Russia: GOST |
HEALTH for Longwall Vibration Analysis
| Provides vibration monitoring functionality for longterm health monitoring of the following longwall related equipment: |
• CST gearbox and relating motor • UEL gearbox and relating motor |
| Provides vibration monitoring functionality for longterm health monitoring of the following longwall related equipment: |
• Shearer haulage and ranging arm gearboxes • Water/HFA pump station |
| Provides vibration monitoring functionality for longterm health monitoring of the following longwall related equipment: |
• Stage loader gearbox and relating motor • Crusher and relating motor |
PMC-D Dimensions and Plug Assignments (Approximate)
| Height |
148.0 mm |
| Length |
335.0 mm |
| Width |
278.0 mm |
PMC-D20 Dimensions and Plug Assignments (Approximate)
| Height |
125.0 mm |
| Length |
335.0 mm |
| Width |
279.0 mm |
Electrical Data
| Supply Current – Maximum Ratings |
1.5 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 - +104° F) |
| Temperature – Symbol |
Tamb |
| Temperature – Typical Value |
20.0 ° C |
Attributes of PMC-D/PMC-D20 Control Unit
- Robust stainless steel design
- Highly reliable OS37 plug technology for complete gear box control
- SKK24 hose cables for bus system and additional I/O connection
- IP 68 rating (48 hr @ 1 m [3.28 ft] under water)
- HMI with 24 multi feedback keys (pressure point, led light)
- 63.5 mm (2.5 in) graphical monochrome display
- Multi language support
- Maintainability (brass bar mounting)
- Optional eight (8) additional ports for acceleration sensors (PMC-D20)
Exemplarily System Layout of a PMC-D System (Shearer Face)
Main Features PMC-D Drive Control System
- “Distributed controller Intelligence per drive”
- Synchronized heavy load start up
- Soft start up
- Load sharing between conveyor drives
- Overload protection
- Motor braking feature
- Further used in plow operations:
- Precise position detection - Overload protection
Additional Features
- Usage of PMC-D for chain tensioning of AFC (front and rear conveyor) and Beam Stage Loader (BSL)
- In conjunction with Slacktronik direct BSL chain slack control and relating chain tensioning
- Usage of PMC-D for high accurate plow position control and monitoring
- Support VFD controlled drive applications
- Optional integration of “HEALTH for Longwall Vibration Analysis” function with PMC-D20 control unit:
- Acceleration sensor interface for 8 sensor - Integrated communication for vibration analysis
