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.
| Operating System | µITRON RTOS µITRON RTOS |
| Processor | 16Bit Microcontroller TMP91CW12AF, 27MHz, internal RAM 4Kbytes, ROM 125Kbytes 16Bit Microcontroller TMP91CW12AF, 27MHz, internal RAM 4Kbytes, ROM 125Kbytes |
| RAM Memory | 2Mbytes CMOS Static RAM, 4Mbytes Flash 2Mbytes CMOS Static RAM, 4Mbytes Flash |
| Types (2) | U.S.: MSHA U.S.: MSHA |
| Types (6) | Russia: GOST Russia: GOST |
| Types (3) | More certifications on demand More certifications on demand |
| Types (5) | China: MA China: MA |
| Types (1) | Europe: ATEX Europe: ATEX |
| Types (4) | Australia: IECEx, ANZEx Australia: IECEx, ANZEx |
| Supply Voltage - Maximum Ratings | 9.5 V - 13.2 V 9.5 V - 13.2 V |
| Supply Current - Maximum Ratings | 2 A 2 A |
| Supply Current - Typical Value | 1 A 1 A |
| Supply Voltage - Typical Value | 12 V DC 12 V DC |
| Temperature - Typical Value | 68 °F 20 °C |
| Temperature - Maximum Ratings | -20° C - +40° C (-4° F - +140° F) -20° C - +40° C (-4° F - +140° F) |
| Temperature - Symbol | Tamb Tamb |
| Width | 7.01 in 178 mm |
| Length | 12.6 in 320 mm |
| Height | 4.57 in 116 mm |
| Length | 12.6 in 320 mm |
| Width | 7.01 in 178 mm |
| Height | 4.57 in 116 mm |
| Width | 2.68 in 68 mm |
| Length | 13.66 in 347 mm |
| Height | 1.46 in 37 mm |
| Sockets S301-S306 - Pin 1 | 12 V 12 V |
| Sockets S301-S306 - Pin 2 (Solenoid 1) | GND1 GND1 |
| Socket S101 - Pin 1 | 12 V 12 V |
| Sockets S307-S311 - Pin 4 | 0 - 1 mA; 0.5 - 4.5 V 0 - 1 mA; 0.5 - 4.5 V |
| Sockets S307-S311 - Pin 1 | 12 V 12 V |
| Sockets S301-S306 - Pin 4 | GND GND |
| Socket S101 - Pin 3 (Solenoid 2) | RX RX |
| Sockets S301-S306 - Pin 3 (Solenoid 2) | GND2 GND2 |
| Socket S101 - Pin 2 (Solenoid 1) | TX TX |
| Sockets S307-S311 - Pin 2 (Solenoid 1) | GND1 GND1 |
| Sockets S307-S311 - Pin 3 (Solenoid 2) | GND2 GND2 |
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