7
IOM Interface
Two (2) 7-segment LED displays
Driven by two (2) latched shift registers
Reverse surface mounted through board cutout
Push-button to change address and terminate CAN
IOM System Fault Alarm
Normally ON, OFF on fault (open-collector)
The recommended
IOM
(Input Output Module) code range is 81-99.
3.1.4: The IOM
The
IOM
(Input-Output Module) is a DIN rail mountable input/output module with one
(1) dedicated system fault alarm output. (Outputs to signal a variety of conditions such as
circuit trips, low temperature alarms, ground/earth leakage alarms, and high temperature
alarms.
Every panel will have at least one (1)
IOM
which can receive inputs and outputs determined
by the requirements and design of the system. There will be at least one (1)
IOM
for a
Genesis panel to provide common alarm output. The
IOM
can be configured to perform
many different functions, and multiple
IOM's
can be arranged on a Genesis panel.
IOM Inputs
The inputs on the
IOM
are labeled 5 and 6. They are designed to sense 24 Vdc supplied by
the
IOM
through an open or closed relay contact. This allows input from various types of
signals from 0 Vdc to 24 Vac. As long as the coil side of the relay used is appropriate for the
signal and the contact side of the relay has a 24 Vdc rating or better, any relay could be used.
The standard alarm relays are Phoenix Contact relays #PLC-RSC-24DC/2 l/EX -2909524.
To use an
IOM
input, wire the appropriate relay as pictured in the diagram.
IOM Outputs
The outputs on the
IOM
are labelled 1-4 plus 7. Output 7, (SYS), is a non-configurable output for system fault alarm.
To use an
IOM
output, wire the appropriate relay as pictured in the diagram. Each output is designed to drive an
interposing relay ≤ 24 Vdc with < 100 mA for local or remote alarms. (For specific ratings, consider a Phoenix PLC-RSC-
24DC/2 l/EX, or equal.)
Default I/O Configuration
IOM
Sub-address
I/O
Default LED State
Alarm LED
State
Function
1
Output
ON
OFF
Common Alarm
2
Output
ON
OFF
Circuit Trips
3
Output
ON
OFF
HIgh Temperature
Alarm
4
Output
ON
OFF
Low Temperature
Alarm/RTD Fault
5
Input
--
--
Load Shed
6
Input
--
--
Force On
7
Output
ON
OFF
System Fault Alarm
IOM
Two-digit
code for IOM
module
IOM
Sub-address
