Davis Derby MineWATCH Control & Monitoring Units Overview

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ATEX M1 certified intrinsically safe
Distributed intelligence for effective plant control and monitoring
Cost effective solution minimises hardware and cable costs
Units can be up to 500 metres apart enabling the intelligence to be distributed
Extremely flexible to allow a wide range of applications
Expandable to suit future changes
The PLC ladder logic software is user programmable
Modules can be reprogrammed on site

The Davis Derby MineWATCH PC 21 system is certified intrinsically safe to the ATEX directive, category M1. The system is a flexible remote control and monitoring system comprising three modules which can be used in combination for a wide variety of applications such as conveyor, pump, fan and compressor control. In addition the PC 21 system is suitable for environmental monitoring applications.

	MineWATCH Conveyor Control Unit - used for coal face AFC and stage loader applications or for roadway conveyors.
	MineWATCH General Purpose Control Unit - intended for various applications, including pump control, fan control, auto-loop control, hydraulic coupling control or compressor control.
	MineWATCH Input Output Unit - to expand the I/O (input/output) facilities of the other units of the PC21 series.
	MineWATCH Telemetry Unit - unit to interface with a mine SCADA system via BS 6556 FSK telemetry.

MineWATCH PC 21 Modules

The three MineWATCH PC 21 modules are:

	PC 21-1 Control module - intrinsically safe interface to mine plant and machinery.
	PC 21-2D Display module - provides the user interface; it is equipped with an LCD display and a keypad.
	PC 21-2T Transmission module - an intrinsically safe barrier and telemetry modem to provide a long range telemetry link to a SCADA system. It is capable of operating over distances of up to 10km.

The MineWATCH modules are described in the MineWATCH PC 21 Modules section. Modules can be connected together to form a cluster as shown below. This section describes a range of dedicated control units based on the PC 21 modules: