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Installation
7
UPC20+ Universal Power Controller
Installation
P1 Terminal Connections
Low voltage power (see the table below) for internal circuitry is provided from an on-board transformer,
powered by an external 120 or 240 VAC source. An onboard switch is used to select input voltage. When
using the UPC20+ for 277 VAC control, the on-board internal circuitry is powered by a separate 120/240
VAC line, or from an optional 12 VDC power supply.
K1 and K2 are the power and motor control relay connections to P1 terminals 1 and 2, 3 and 4,
respectively. Each relay is capable of switching the following loads:
Resistive Load 20 Amps at 120/240 VAC
Fluorescent Ballast 6 Amps at 277 VAC
Inductive Load 1 HP
The maximum total combined current through both relays is 20 Amps. There are two 12-gauge jumpers
that are wired to supply board power at 120/240 VAC, and to connect the common terminals of the
relays. The jumpers are removed as needed according to the wiring options selected.
P2 Terminal Connections
The table below defines the inputs and outputs for Terminal P2.
Control Mode
The table below defines the control mode functions for Inputs 1 and 2. T Control Mode
Functions for Inputs 3 and 4 table on page 9 defines the control mode functions for Inputs 3 and 4.
P1 Terminal Connections
Terminal Input/Output
Function
1
Output
Load 1 out
2
Input
Line 1 in
3
Output
Load 2 out
4
Input
Line 2 in
5
Input
Neutral to transformer on PCB which supplies low voltage
6
Input
Line to transformer on PCB which supplies low voltage
P2 Low Voltage Terminal Inputs/Outputs
Terminal Input/Output
1
+12 VDC out
2
Serial data in (IR sensor)
3
Ground
4
Ground (common)
5
Input 1
6
Input 2
7
Input 3
8
Input 4
9
+12 VDC in
Summary of Contents for UPC20 Plus
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