MineWATCH Conveyor Control Unit

Davis Derby offers a dedicated conveyor control unit based on the MineWATCH PC 21 modules, single or dual pilot versions are available.  The unit is equipped with one or two built in signalling systems on separate in-built printed circuit boards to provide lock out facilities with key monitoring indicating the number (or position) of which signal key was used to stop the conveyor.  The unit is also fully compatible with the Davis Derby DIS 5 intrinsically safe communication system thus providing fully monitored and interlocked pre-start warning for each of the controlled conveyors. The conveyor control unit may be used for coal face AFC and stage loader applications or for roadway conveyors.

The conveyor control unit is bolted to a flameproof power supply unit providing an intrinsically safe 12 volt dc output to power the two signalling systems and the DIS 5 communications system. The unit is also equipped  with relays to connect to the pilot circuit of the conveyors. 

The MineWATCH PC 21 modules are  powered from a separate power supply unit, which can provide power for severalmodules via the CAN bus.

The unit contains a PC 21-1 control module, a PC 21-2D display module. A  separate Telemetry unit is available for connection to a SCADA system.

Typical MineWATCH Conveyor Control Unit

Conveyor control and monitoring equipment is also available from Davis Derby as part of the StedFAST range of products, which include conveyor Pullkey systems and conveyor protection devices