Smart Connect Multi-loop Repeater Installation Manual
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7
Cable Grounding
The Repeater has no internal earth bars. It is recommended that network wiring is connected to ground at a Smart Connect control
panel (only one side of the network wiring should be grounded).
DC Power Wiring
The SMART/REP needs to be powered by a 28VDC external EN54 approved power supply. The cables used for this must be fire rated.
Recommendations
The DC supply to the Repeater should be fixed wiring, using Fire resisting 3-core cable (Between 1 mm² and 2.5mm²), or equivalent.
The AC supply to the PSU should be fed from an isolating double (or single) pole switch fused spur, and fused at 5A. This should be
secure from unauthorized operation and be marked ‘FIRE ALARM: DO NOT SWITCH OFF’. The supply must be exclusive to the repeater.
Connecting the DC Power
The incoming DC power cable should be kept separate from the RS485 network cables to help minimise interference.
It is advisable to apply power to the repeater before connecting any network cables, to check for correct operation, and to familiarise
yourself with the repeater panels’ controls.
If a knockout is removed, fill the hole with a suitable cable gland. If any knockout is removed, but subsequently not used, it should be
covered up.
Figure 2: Termination PCB Layout
ATTENTION:
MAKE SURE ANY SPARE ENTRY HOLES THAT HAVE BEEN OPENED, BUT NOT USED ARE COVERED WITH
SUITABLE GROMMETS OR BLANKING SCREWS.
ATTENTION:
DO NOT DRILL ANY ENTRY HOLES INTO THE DOOR SECTION OF THE ENCLOSURE.
(Not used)
