Scope of this manual
This manual details the information needed to safely install and operate the
REGARD–1 single channel control unit manufactured by Draeger Safety UK Ltd.
This manual does not include information related to the associated transmitter or
measuring head.
Intended use
The REGARD–1 control unit is designed for the continuous monitoring of flammable,
toxic and/or other gases and the control of alarms, indicators or other equipment via
digital outputs and alarm relays.
The control unit is designed for use in a control room environment. The atmosphere
should be free of contaminants and pollutants, which are known to be harmful to
electronic equipment.
The control unit is not designed or certified for use in areas where combustible
or explosive gas mixtures are likely to occur.
No safety function is controlled by software. All safety functions are analogue.
Revision 4 manual includes
New measuring ranges of 0-8 and 0-20 added.
A1 and A2 dc output specification revised.
Fault relay terminals identified correctly.
Potentiometer for calibration re-named to FSD (VR1).
Relay terminal designation revised.
Introduction
Description
The control unit comprises of two main circuit boards, two options boards and a
custom design enclosure.
Main circuit board
The main circuit board comprises of an AC/DC power supply, analogue circuitry and
alarm relays/LED’s. Terminals along the bottom edge of the circuit board act as the
interface between the field devices and the control unit. All optional circuit boards use
a multi-pin plug/socket to connect to the main circuit board.
A small DIL switch allows for the configuration of the main circuit board to be
customised. Conventional potentiometers are used for setting the calibration and
alarm trip points. An inhibit jumper and test points are provided for use during
commissioning and servicing.
Issue 4 03/09/04
4 of 29
To Next Page
Loading...
Need help?
General
