EV-2I1O (-EU) Installation instructions
IIS-EV-2I1O (-EU) Issue 4 04/03/2019
Connections
General Operation
Standby condition: The module receives polling from the control panel at the regular
interval.
Input condition: When the monitored contact switches into an input state, the module
reports the state to the control panel.
Output Operation: On a command from the control panel the output relay will change
state. It is possible to set the relay to “Failsafe” mode, where it will also change state if loop
power is lost.
Fault condition: The module reports to the control panel on an open or short circuit in the
input circuit and relay stuck in output circuit.
SCI in active condition: When SCI is activated to isolate a short circuit in the loop, the LED
on the module illuminates yellow.
Interchangeability with Existing Products
It is necessary to update the software of the control panel to respond to EV-2I1O, prior to
the replacement of the existing model EV-SIO. The EOL resistors will also need to be
changed.
SCI Function
The EV-2I1O (EU) has a built-in short circuit isolator. The SCI circuit prevents entire loop
failure in the event of a short between L+ and L- on the loop. If a short circuit is detected,
the section of line containing a short circuit is automatically isolated. If not required the
Isolator can be bypassed using the Jumper provided.
Service and Maintenance
Inspection and tests of the module shall be carried out periodically according to the
requirements of BS 5839 Part 1, Fire Detection and Alarm Systems for Buildings: Code of
Practice for System Design, Installation and Servicing, or equivalent local codes of
practice.
For a routine inspection, ensure the module is secure and undamaged.
When carrying out site testing of the module, set the Fire Alarm Control Panel to test mode
and take any necessary precautions, so as to limit the activation of alarm sounders/bells
and any fire service summoning device.
Figure 5
Figure 4 – EV-2I1O-EU
European 503 Box
EV-2I1O-EU Module
Mounting Screw
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