Cabling
The main cable access is via the bottom edge of the enclosure. There are five pre-
formed M20 cable gland holes provided. A single pre-formed M20 cable gland is
located on the top of the enclosure. It is recommended that the cable glands be fitted
to the enclosure before the enclosure is mounted on the wall.
A separate gland earthing plate is available. This plate is fitted inside of the enclosure
and earthed via a spade connector.
All field terminals, excluding the battery terminals are located along the bottom edge
of the main circuit board. It is recommended that if stranded cable is used then these
cables be fitted with a ferrule.
Termination details are shown in Appendix B
Mains supply
A three-core mains cable connects the control panel to a dedicated fused spur rated at
3 amps.
Transmitter
Irrespective of the type of analogue (4..20mA) transmitter connected to the control
unit a 2 or 3 core (eg LiYCY) cable should be used. The screen of the cable should be
connected to the cable gland.
For correct installation reference should be made to the appropriate transmitter
Operating Manual.
Appendix E shows typical transmitter connections.
Alarms
There are two types of alarm output; a switching 24vdc and voltfree relay contacts.
When connecting alarm devices to the switching 24vdc output it is recommended that
LiYCY type cable is used. When connecting alarm devices to the voltfree relay
contacts there is no requirement to use LiYCY type cable.
Remote reset
The remote reset facility should be connected to a normally open switch. It is
recommended that LiYCY type cable is used.
Issue 4 03/09/04
7 of 29
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