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Dual circuit 277 VAC
Dual circuit connections provide power from 277 VAC for fluorescent ballasts (FIG. 6). Circuit board
power is provided by a separate 120/240 VAC high voltage circuit, or 12 VDC connected to terminals 1
and 6 on the low voltage terminal block. For dual circuit 120/240 VAC operation, remove the short 12
AWG wire jumper.
For Dual 277 VAC Circuits
Power Circuit Board Electronics
From 12 VDC or 120/240 VAC
1 2 3
External Power to Circuit
Board Electronics
FIG. 6
Low voltage and 277 VAC high voltage wiring
If motors of any kind are used, do not set to a power control mode. When a power
control mode is selected, both relays can be on at the same time. Motors can be
severely damaged if this happens.
Wiring The UPC20+ to Either The IRX-DM+ Or IRX-SM+
Wire the UPC20+ to the sensor as shown in FIG. 7. .
1
PWR
IN
FIG. 7
Wiring diagram for UPC20+ to IRX-DM+ or IRX-SM+
Wireless IR Sensor Connection
The wireless IR sensor connections are located on P2, terminals 1 - 3. Terminal 1 is +12 VDC out,
terminal 2 is serial data in, and terminal 3 is GND. The +12 VDC is short circuit protected, and the
output supplies up to 25 mA for the remote sensor.
For dual circuit 277 VAC operation, remove both 12 AWG wire jumpers.
UPC20+ Universal Power Controller
120/240
VAC
Line Neut Line
Terminal
Block P2
4
5 6
7 8
9
6
+
-
12 VDC
Remove
Board
Power
2
3
GND
UPC20+
Load
Load
Line
#2
#2
#1
#1
5
4
1
3
2
Remove
Terminal
Line
Block P1
IRX-DM+ or IRX-SM+
connector
Top view
Installation
Line #1 in, Line #2 in,
and Line to transformer
are all independent
1
PWR
2 AUX OUT
3 OUT
4
GND
11
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