Install Rack Options
23
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 each installation. the auxiliary supply is capable of 36W
(1.5A at 24 Vdc).
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 (1.5mm
2
) red /
black wire pair) to the ERn rear panel.
2: Strip 3/16” (4.8mm) of insulation from the ends of each wire pair.
3: Remove the auxiliary power connector from the 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 connectors
and tighten the screw to secure the wire into the connector.
7: Repeat steps 5 and 6 for all auxiliary power wires in the enclosure.
8: Replace the connector to the rear panel I/O.
Status Indicators
When power is applied to the ERn enclosure, the Paradigm repeater module LEDs located on the front
panel illuminate, indicating the status of the auxiliary power, LinkConnect control network, and
connected stations.
The Aux Power and LinkPower LEDs indicate in green when the Paradigm station power module is
connected properly and auxiliary power and LinkPower are present. When there is an unbalance in
LinkPower the fault indicators illuminate. This condition typically means that the station wiring is at
fault, however it could mean a connected device is having an issue. A qualified technician should
inspect the system wire and terminations first, then proceed to disconnecting devices to pinpoint the
fault and correct it. The power supply will update the fault indicators automatically when the fault
condition is cleared.
• If the NET A line has a fault (is shorted or has leakage to ground), the Fault + LED lights.
• If the NET B line has a fault (is shorted or has leakage to ground), the Fault - LED lights.
• If neither fault LED is illuminated the data connections are properly installed and the stations are
receiving the data and power required for operation.
Install Redundant Power Supply
The ERn redundant power supply (ERn-RPS) is an additional rack power supply that powers the ERn
enclosure if the primary rack power supply fails.
Note:
It is required that you terminate LinkConnect station wiring and the auxiliary power
wiring to the ERn rear panel I/O board that will host the Paradigm station power
module (P-SPM).
-
+
-
+
-
+
-
+
-
+
