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PWP120277
Power Pack
SPECIFICATIONS
Voltages ............................................ 120/230/277VAC,50/60Hz
Load Requirements
Ballast ............................................... 20amp @120/277VAC
Incandescent ............................................ 20amp @120VAC
Motor ...................................................... 1HP @120/240VAC
Output .......................225mA @24VDC (with relay connected)
Low Voltage Input, Control ON .................................12-24VDC
Operating Temperature ........................32°-104°F (0-40°C)
WARRANTY INFORMATION
Pass & Seymour/Legrand warranties its products to be free
of defects in materials and workmanship for a period of five (5)
years. There are no obligations or liabilities on the part of Pass &
Seymour/Legrand for consequential damages arising out of, or in
connection with, the use or performance of this product or other
indirect damages with respect to loss of property, revenue or profit,
or cost of removal, installation or reinstallation.
Installation Instructions
Syracuse, NY 13221
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DESCRIPTION
Low Voltage
Class 2
High
V
oltage
The PWP120277 power pack is the foundation for any low voltage lighting control
system. The PWP120277 supplies low voltage power to occupancy sensors and
other control devices, switching line voltage in response to signals from control
devices. The PWP120277 power pack is attached to existing junction boxes or
mounted into fixture wiring trays.
Low voltage wiring should use at least 22-gauge wire, high voltage connections
should use at least 14-gauge. Always check local building codes. After initial
wiring is complete, check wiring diagram to verify power pack is wired correctly.
Improper wiring can cause damage to power pack, lighting system, and
occupancy sensor.
INSTALLATION
WARNING
TURN POWER OFF AT CIRCUIT
BREAKER BEFORE INSTALLING
POWER PACKS.
WIRING
1. Make sure power has been turned off
at the circuit breaker.
2. Connect wires as shown in Fig. 1 or
Fig. 2.
Neut.
Line
Fig. 1: Single load control
White
Black
Call 800.233.4185 for Technical Support
PWP120277
Blue
Black
Control Output
+24VDC
Red
Common
Red
Red
Switch
(optional)
Any 3-Wire
24VDC
Sensor
Lighting
Load
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Installation Notes
1. Power packs should be installed in accordance with state, local and national
electrical codes and requirements.
2. Power packs are designed to attach to existing or new electrical enclosures
with 1/2 inch knockouts.
3. Most applications require UL listed, 18-22 AWG, 3-conductor, Class 2 cable
for low voltage wiring. For plenum return ceilings, use UL listed plenumapproved cables.
4. The PWP120277 is a Class 2 Output Power Supply, suitable for parallel
interconnection of up to 10 units maximum. This powerpack is UL Listed for
Interconnection of Power Sources in accordance with the National Electric
Code.
Fig. 2: Parallel interconnect
for multiple load
control from a single
sensor
www.passandseymour.com
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OPERATION
Low Voltage Input (Blue Wire):
The blue wire carries the +12-24VDC maintained input Control ON signal to the
PWP120277. Applying 12-24VDC to this input closes the PWP120277 load relay.
Removing the voltage returns the relay to its normal state. This input is intended
for sensor or control device input.
Over Current Protection:
The PWP120277 contains built-in short circuit and thermal protection circuitry
that shuts down the +24VDC output (red wire to sensors) to prevent permanent
damage to the power pack. Removing the excess load from the output restores
the PWP120277 to proper operation. The excess load can be connected to another
power pack.
LED Indicator:
The LED indicates the following conditions on the PWP120277:
• LED OFF: no power to the PWP120277, or the +24VDC output is shorted.
• LED ON, blinks once every 5 seconds: the relay is closed (load ON).
• LED ON continuously: the relay is open (load OFF).
• LED blinking continuously: current output limit is exceeded (too many
sensors are connected to the power pack); +24VDC output shut down.
ORDERING INFORMATION
Catalog
No.
PWP120277 Power Pack 120/230/
Description Input
Voltage
277VAC,
50/60Hz
P.O. Box 4822, Syracuse, NY 13221-4822
Technical Support: 800.223.4185
www.passandseymour.com
340890 11718
Load Range
Ballast
Incan.
(A)
Motor
(hp)
225mA
with relay
connected
Please
Recycle
(A)
20 20 1 24VDC,
Output
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