UL924 emergency
power pack
LINE VOLTAGE
Series Downloads
Instructions
Overview
During normal operation, SENSORWORX emergency power packs switch on/off emergency power to connected lighting as directed by wired sensors, photocells, and wall stations. If it senses the loss of normal power feeding the devices it is connected to, it will override its relay closed within 5 seconds and remain in that state until normal power is restored. The unit’s 0-10V dimming option greatly simplifies applications where dimming control from multiple switch locations is required. Upon loss of normal power, this dimming output will be held at full bright. This SENSORWORX emergency power pack is rated to switch circuits up to 16A and utilizes a powerful microprocessor to optimize its switch timing, ensuring long relay life even when controlling high-inrush LED lighting.
Basic Operation
An input signal indicating loss of power from one or more connected sensors will signal the pack’s integrated relay to close. Once closed, line voltage will flow through the relay and turn on the connected lighting load. When the input signal indicates that power has been restored, the relay will open and lighting will switch off. This pack is also available with an auxiliary switch input to enable emergency control of spaces with switch control.
Applications
The SENSORWORX Emergency power pack (SWD-900-EM-D1/D2) has the additional certification for UL924 usage and functionality since it is fed from a circuit fed with emergency backed up power. If there is a loss in normal power it will no longer sense +VDC on its red class 2 input wire that is provided by other power packs powered from normal power. As a result, it will override its internal relay on and make its dimming output (if present) full bright within 5 seconds. During the emergency state it will not be controlled by any other connected devices and shall stay on until normal power is restored.
Applications can be easily deployed to meet the requirements such as, Occupancy, Vacancy, Partial On, and Partial Off. In addition, Daylight Harvesting and multi-way dimming/switching.
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Classrooms
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Copy Rooms
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Open Areas
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Small Offices
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Conference Rooms
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Private Restrooms
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Break Rooms
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Hallways
Features / UL924 emergency power pack
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Powers Low Voltage Sensors
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Switches Line Voltage Loads
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Electronically Timed Switching (i.e. Zero Crossing) Ensures Long Relay Life
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UL 924 Emergency Operation
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Plenum Rated (UL 2043)
- Optional Snap-On Attachment Provides Chamber for Low Voltage Wire Connections
- Optional Switch Input for Manual On, Hold On, or Hold Off Operation
- Optional 0-10V Stepped Dimming Ouput for Partial Off or Partial On Operation
Specifications
Physical
SIZE & WEIGHT
3.00” H x 2.25” W x 1.88” D
(7.62 cm x 5.72 cm x 4.78 cm)
6.00 oz.
COLOR
Blue
MOUNTING
1/2” Knockout
TEST BUTTON
LED STATUS INDICATOR
Bi-color White & Blue
Environmental
OPERATING TEMP
32°F to 122°F (0°C to 50°C) Std.
-40° F/C (with -HE Option)
RELATIVE HUMIDITY
0-95% Non-Condensing, Indoor Use Only
ROHS COMPLIANT
Compliance
UL-924 Certified Device
Load controllers can be used to meet ASHRAE 90.1, IECC, & Title 24 energy code requirements
Electrical
OPERATING VOLTAGE
120/277 VAC (-900 Models)
120/347 VAC (-903 Models),
Single Phase, 50/60 Hz
CLASS 2 EM SIGNAL INPUT
15VDC
LOAD RATINGS
(relays use zero-cross switching)
20A @ 120/277 VAC – General Purpose, Tungsten Magnetic Ballast
20A @ 120/277 VAC – Electronic Ballast, LED Driver
DIMMING LOAD
(Models with -D1/-D2 option only)
50mA, (0-10 VDC ballasts or drivers compliant with IEC 60929 Annex E.2)
MOTOR LOAD
1 HP
ESD IMMUNITY
Tested to withstand electrostatic discharge without damage or memory loss
Wiring Diagrams
To enable Emergency functionality, a SWX-900 Series power pack that is powered via normal power must provide a +VDC signal connection to the -EM power pack powered from Emergency power.
SWX-900-EM
SWX-900-AX-EM
SWX-903-EM
SWX-903-AX-EM
Installation Options
Ordering Info
EXAMPLE MODEL # SWX-900-EM
| PRODUCT | FUNCTIONALITY | VOLTAGE | AUX SWITCH INPUT | EMERGENCY OPERATION | ADDITIONAL OPTIONS | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SWX– | Power Pack | 9 | Single Relay + 150 mA Supply | 0 | 120/277 V | 0 | None | Blank | UL924 Emergency | –EM | High Humidity Environment | -HE |
| 120/347 V | 3 | Auxiliary Switch Input | –AX* |
*Available with SWX-910 only.
| ACCESSORY | DESCRIPTION |
|---|---|
| SWX-999 | Snap-On Low Voltage Wiring Chamber |
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