Introduction; System Design; The Control Unit; Case - Eaton i-on series Engineering Manual

i-on Range

Introduction

System Design

The i-on range of control units for hybrid wired/wirefree alarm systems are intended for,
domestic, commercial or industrial use. The range is designed to support a wide spread of
alarm system sizes. To increase the size of the alarm system the i-onEX control units
allow the Installer to connect expanders and keypads to a single "data bus" which carries
all the data between the control unit and its peripherals.
The control unit PCB provides connections for wired zones and a number of outputs. The
Expanders provide connections to either extra wired zones and outputs, or radio detectors
and radio outputs. Both wired and radio devices can exist in the same alarm system. The
single bus cable also allows the installer to connect keypads, output modules or extra
power supplies wherever they are needed.

The Control Unit

Case

All i-on control units are housed in an individual case that provides space for the control
unit's PCB, power supply and one or more backup batteries. The cases are designed for
vertical mounting on a wall, and provide three or more fixing points.
The i-on160EX, i-on50EX and i-on30EXL cases are made of coated steel and can be
butted up to side walls or a ceiling without blocking the opening or closing of its lid. The
case lid is fixed by a single screw, and can be hung from the case back when open. The
back of the case provides pre-cut holes for cable access, and stands off from the mounting
surface to allow cables to pass behind.
The i-on30EX case is also made of coated steel, and has an "all-over" lid fixed on by a two
screws.
The i-on16 and i-on40 cases are made from ABS plastic.
Battery Backup
The i-on160EX case provides space for two 17Ah backup batteries. Each battery has its
own connector on the control unit PCB, and is charged by the control unit while mains
power is present.
It is possible to run the system with a single backup battery (although the resulting standby
time may not meet the Grade 2 or Grade 3 requirements). If you chose to use a single
battery, then you should connect the battery to connector "BATT1" and program the
control unit to suppress alerts that Battery 2 is missing, see page 104.
The i-on50EX and i-on30EXL provide space and a connector for one 17Ah battery.
The i-on16, i-on30EX and i-on40 provide space and connectors for one 7Ah battery.
Back tamper/Lid tamper. In the i-on160EX, i-on50EX i-on40 and i-on16 the back of the
case provides a plastic shrouded slot through which the Installer can fit the combined back
tamper/lid tamper switch. This switch is mounted on a metal blade that slides through the
slot and touches the mounting surface. Once fitted and connected to the PCB, removing
the lid or prising the case from the wall activates the switch.
In the i-on16 and i-on30EX the lid tamper is a switch mounted on the main PCB.
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