ICAM ILS-2 Product Guide
ICAM by Xtralis
10
www.xtralis.com
3.1.1
Battery / Input Power Connection
Figure 3-2: Ferrite core and battery supply wiring
The ILS-2 unit is designed to run from a 24 VDC power supply. The power supply should be connected to the
two-way BATTERY terminal on the main circuit board ensuring that the wires are correctly orientated. The
minimum recommended wire size is 16 x 0.25 mm (18 AWG), or larger if the supply is further than 5 m from
the system.
A ferrite core is provided for EMC compliance. This should be fitted to the power supply wiring inside the unit
as shown above in Figure 3-2.
The power requirements are dependant on the fan speed selected, please refer to Table 11-2 for details.
3.1.2
ACTION 2, ACTION 1 Relay Contacts
The dry relay contacts ACTION will change state when the pre-alarm level for the channel has been
exceeded. The terminals provide for Normally Open (NO) or Normally Closed (NC) operation.
3.1.3
FIRE 2, FIRE 1 Relay Contacts
The dry relay contacts FIRE will change state when the alarm level for the channel has been exceeded. The
terminals provide for Normally Open (NO) or Normally Closed (NC) operation.
3.1.4
FAULT 2, FAULT 1 Relay Contacts
In the event of a fault condition, the Fault relay will change state. The terminals provide for Normally Open
(NO) or Normally Closed (NC) operation.
Note:
NO/NC refers to the un-powered state of the relays. Under normal, non-fault conditions, NO is
closed and NC is open.
3.1.5
External Reset
The application of a nominal 24 VDC signal to these pins forces the unit into Reset clearing all faults and
alarms.
3.1.6
USB Connector
A Type B USB connector is provided on the bottom of the unit to allow connection to a PC using a standard
USB cable (not supplied). This communication port allows for configuration or downloading of logged data.
The connector is protected with a screw-fit cover and care should be taken to ensure that the cover is securely
fastened when the connector is not in use to prevent the ingress of dirt or moisture.
