30
ERn Wall-mount Installation Manual
7:
The 14 AWG ground wire can terminate to the ground bus located inside the ERn enclosure.
• If grounded metal conduit is installed a ground wire may not be required for termination.
Reference the related station installation manual for details.
8:
Replace the connector on the top right I/O board.
Terminate Auxiliary Power
Auxiliary power is required when you are installing powered Unison control stations. ETC recommends
using two 16 AWG (1.5mm
2
) stranded wires for 24 Vdc auxiliary power to the control station(s).
Auxiliary power is topology-free. Maximum auxiliary voltage runs are dependant by the wire gauge and
the distribution of auxiliary load determined by installation. The auxiliary supply is capable is of
powering up to four Paradigm Touchscreen Stations and 28 interface stations.
The auxiliary power connector (labeled Aux Power) provides termination for up to 20 wires in the ten
position pluggable connector. Each terminal allows up to two 16 AWG(1.5mm
2
) wire and provides 24
Vdc power to Unison control stations when used with the Paradigm ACP.
1:
Pull auxiliary control power wiring (typically 16 AWG (1.5 mm
2
) red / black wire pair) into the
ERn enclosure through the conduit opening previously prepared.
2:
Strip 3/16” (5mm) of insulation from the ends of each wire pair.
3:
Remove the auxiliary power connector from the
right I/O board.
4:
Loosen the terminal screws for as many auxiliary
wire pairs as you are terminating.
5:
Insert the black (typical) auxiliary power wire from
the pair into a “-” terminal on the connector and
tighten the screw to secure the wire into the
connector.
6:
Insert the red (typical) auxiliary power wire from
the pair into a “+” terminal on the connector and tighten the screw to secure the wire into the
connector.
7:
Repeat steps 5 and 6 for each auxiliary power wire in the enclosure.
8:
Replace the connector on the right I/O board.
Note:
When utilizing a Paradigm Station Repeater Module (P-REP) or Paradigm Dual Station
Repeater Module (P-DREP) in an ERn4 rack, terminate the repeated LON segment(s)
and auxiliary power wiring to the top right I/O board.
- + - + - + - + - +
