SENSORWORX power pack controllers transform incoming line voltage power to Class 2 low voltage as needed by sensors or other control devices. Additionally, they switch on/off power to the connected lighting load as directed by the sensors and controls. SENSORWORX power packs utilize a powerful microprocessor to optimize its switching timing in order to ensure long relay life even when controlling high-inrush LEDs and ballast loads. As with all SENSORWORX products, these power packs are easy to install and incorporate features which reduce contractor labor time. An elongated chase nipple with snaps for quick installation and an optional snap-on low voltage wire chamber makes for a hassle-free contractor experience. All SENSORWORX products are proudly made in the USA.
An input signal indicating occupancy 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 the occupied period has ended, the relay will open and lighting will switch off. This pack is also available with an auxiliary switch input to enable manual on, hold on, and hold off configurations. Partial on (e.g., auto on to 50%) can also be achieved using the optional 0-10V output.
Features / Power Packs
Powers Low Voltage Sensors
Switches Line Voltage Loads
Electronically Timed Switching Ensures Long Relay Life
Integrated Test/Programming Button
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 On Operation
3.00” H x 2.25” W x 1.88” D
(7.62 cm x 5.72 cm x 4.78 cm)
RELAY TEST BUTTON
LED STATUS INDICATOR
Bi-color White & Blue
32°F to 122°F
(0°C to 50°C)
Indoor Use Only
18 VDC, 150 mA
RELAY CURRENT REQS
20A @ 120 V – General Purpose Plug Load
20A @ 120/277 VAC – General Purpose, Tungsten, Magnetic Ballast
16A @ 120/277 VAC – Electronic Ballast, LED Driver
DC LOAD RATINGS
20A @ 28 VDC (MAX)
1A @ 5 VDC (MIN)
(Models with -D2 option only)
50mA, (0-10 VDC ballasts or drivers compliant with IEC 60929 Annex E.2)
Basic Sensor Wiring (SWX-900)
Basic Sensor Wiring (SWX-900-AX)
Basic Sensor Wiring (SWX-900-AX-D2)
Single Sensor Wiring
Multiple Sensor Wiring
Multiple Power Pack Wiring with Common Line Feeds
Multiple Power Pack Wiring with Separate Line Feeds
Power Pack with Secondary Relay Pack Wiring
Power Pack Connected to Momentary Switch
(Requires -AX Option)
Some energy codes require Manual On (also called Vacancy) operation where an occupant is required to initially switch on lighting. The sensor then ensures lights are turned off once the space is unoccupied
Interfacing momentary switches such as the SWX-801-xx or SWX-803-xx are recommended, however maintained switches can also be utilized
For momentary switches, the power pack will react on the leading edge of a pulse on the brown input wire
For maintained switches, any change of state on the brown wire that lasts longer than 0.5 seconds will be read by the power pack as one action
Power Pack Connected to Maintained Switch
(Requires -AX Option)
Power Pack with Switch Signal from External System
- Typical for Hold On and Hold Off applications
- BROWN switch input can be activated by external signals +5VDC or higher (i.e. logic high)
- For hold on and hold off applications, switch input can also be configured to activate on logic low
(Requires -AX Option)
Switching a powerpack from multiple locations (i.e., 3-way, 4-way switching) can be achieved using multiple SENSORWORX model# SWX-801-xx switches or a combination of one model# SWX-803-xx dimmer and one or more model# SWX-801-xx switches.
Note that only one dimmer should be used per multi-way application.
Partial On / Stepped Dimming
(Requires -AX-D2 Option)
Some energy codes require Partial On operation which only allows lighting to automatically turn on to a 50% level. Once on, an occupant may raise lighting to a higher level. The sensor then ensures lights are turned off once the space is unoccupied.
When initially triggered from an occupancy sensor or switch, the SWX-900-AX-D2 unit will turn on connected 0-10V lighting to 50% (level is user configurable). The unit will then raise lighting to 100% (level is user configurable) when its switch input is triggered. Lighting will turn off if another switch press is detected or when all connected sensors go to their unoccupied state.
Additional configurable parameters include; Turn On Dim Level, Turn Off Scheme, Fade On/Fade Off Rates, and High/Low Dimming Trim Levels.
Using the SENSORWORX model# SWX-801-xx momentary switch is recommended for this application, however other manufacturers switches may also be utilized.
Multi-zone and Bi-Level Switching
Rooms with multiple lighting zones or bi-level lighting often want one zone/level to switch on automatically, with the occupant able to manually switch on the additional zone/level if desired. Both zones/levels are then switched off automatically by the sensor once unoccupied. Two SWX-900-AX power packs are wired to switches, however one unit is set to Automatic On mode while the other is set to Manual On mode. In this configuration, lighting can be switched off manually or automatically via the occupancy sensor.
Load Shed / Hold Off Application
(e.g. OPEN OFFICES)
The occupancy sensor connected to both power packs normally keeps all lights on when the space is occupied. When a load shed (override off) command is given (by BMS, utility meter, etc.), lights connected to SWX-900-AX are held off. Remaining lights connected to SWX-900 are still controlled by the sensor.
Sensor Override / Hold On Application
During open hours, a signal from a time clock (connected to the BROWN switch input on the SWX-900-AX) holds lights on, regardless of occupancy. After hours, the clock’s schedule releases the hold on signal enabling the occupancy sensor to take over.
Power Pack Capacity
SWX-900 series power packs can supply power to several occupancy sensors and additional secondary relay packs. Following the below formula ensures adequate power will be available. Note the SWX-900’s relay has already been factored into the formula.
[ (# of PIR Sensors*) x2 ] + [ (# of Dual Tech Sensors) x10 ] + [ (# of SWX-910) x55 ] < [ (# of SWX-900) x95 ]
EXAMPLE MODEL # SWX-900-AX
|PRODUCT||FUNCTIONALITY||VOLTAGE||AUX SWITCH INPUT||STEPPED DIMMING|
|SWX||Power Pack||9||Single Relay + 150 mA Supply||0||120/277 V||0||None||Blank||Partial On Control*|
|Secondary Relay||1||Auxiliary Switch Input||AX|
|150 mA Supply||2|
*Requires -AX Option
|SWX-999||Snap-On Low Voltage Wiring Chamber|
Power Packs Popular Model Numbers
|SWX-900||Power Pack | Single Relay + 150 mA Supply | 120/277 V|
|SWX-910||Secondary Relay Pack | Single Relay | 120/277 V|
|SWX-920||Secondary Power Supply | 150mA | 120/277V|
|SWX-900-AX||Power Pack with Auxiliary Switch Input | Single Relay + 150 mA Supply | 120/277 VAC|
|SWX-900-AX-D2||Partial On Power Pack with 0-10V Stepped Control | Single Relay + 150 mA Supply | 120/277 VAC|