2000 SERIES SENSORS INSTALLATION GUIDE Revision 3.1 June 1997
2.4 ISOLATOR IU2016
GENERAL
An isolator is a “device” which prevents a loop going down completely when a short circuit in
that loop occurs. When isolators are used, only the devices between two isolators will go down.
The IU2016 can be placed in the loop and is completely transparent for the protocol (in normal
condition). No address setting is required.
High-end fire panels, like FP2000, have built-in isolators per loop. This means that no isolators
have to be placed at the beginning and end of the loop.
INDICATORS
The yellow LED will start blinking when the isolator goes active i.e. when one side is isolated.
The short-circuit will always be located between two active isolators or between one active
isolator and the panel
INSTALLATION
The Isolator is fitted into the Isolator Mounting Base DB2003.
There are four single terminals, namely:
1. (+) IN : Line in
2. (+) OUT : Line out
3. (-) : Common negative
4. Single terminal : This terminal is intended as a through connection point for cable
shields or for an earth connection.
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