LEGRAND WattStopper UW-100-24 User manual

Santa Clara, CA 95050
800.879.8585
Installation Instructions
Specifications
Voltage . . . . . . . . . . 18-24VDC, 24VAC or Half-wave rectified AC
Current Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35mA
Power Supply . . . . . . . . . . . . . . . . . . Watt Stopper Power Packs
Isolated Relay Rating . . . . . . . . . . . . . . . . . . . . . 1A @30VDC/VAC
Time Delay Adjustment . . . . . . . . . . . . . . . . . . . 5 to 30 minutes
Walk-Through Mode . .3 minutes if no activity after 30 sec.
Test Mode . . . 5 sec. at initial power up or DIP switch reset
Ultrasonic Adjustment . . .Minimum to Maximum (trimpot), Off
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40kHz
Light Level Adjustment . . . . . . . . . . . . . . . . . . . . . . 8fc to 180+fc
Alerts . . . . . . . . . . . . . . . . . . . . . Selectable Audible & Visible
US Patents: 5640113
6617560B2
UW-100-24
Ultrasonic Low Voltage Wall Switch
Occupancy Sensor

Auto ON
DIP 7 OFF
UNIT DESCRIPTION AND OPERATION
The UW-100-24 Ultrasonic Low Voltage Wall Switch sensor employs 40kHz
ultrasonic technology in a single-gang wall switch unit. The UW-100-24 sensor
can turn a load ON, and hold it ON as long as the sensor detects occupancy.
After no movement is detected for the selected time delay, the lights switch
OFF. A “walk-through” mode can turn lights OFF after only 3 minutes, if no
activity is detected after 30 seconds following an occupancy detection.
The UW-100-24-100 has one relay and one ON/OFF button. Pressing the
ON/OFF button toggles the state of the relay.
The UW-100-24 sensor contains a light level sensor. If adequate daylight is
present, the sensor holds the load OFF until light levels drop, even if the area is
occupied. Users can override this function by pressing the ON/OFF button. See
Light Level Adjustment.
Turning The Load ON
The UW-100-24 can be programmed for either Auto ON or Manual ON mode. In
either mode, the load can be turned ON or OFF using the ON/OFF button.
Load turns ON and OFF automatically based on occupancy. If the
load is turned OFF manually, it stays OFF until 5 minutes after
the last occupancy detection, at which time it reverts to Auto ON
mode. This prevents the load from turning ON automatically after
it was deliberately turned OFF. Pressing the button to turn lights
ON returns the sensor to Auto ON mode.
Time Delays
The UW-100-24 sensor holds the load ON until no motion is detected for the
selected time delay. Select the time delay using DIP switch settings. The sensor
automatically sets the time delay when SmartSet Auto/Test is enabled for
maximum energy savings.
Manual ON
DIP 7 ON
Occupants must press the ON/OFF button to turn ON the load.
The sensor keeps the load ON until no motion is detected for the
selected time delay. There is a 30 second re-trigger delay. If
occupancy re-triggers during the delay, the sensor turns the
load back ON. After the re-trigger delay elapses the ON/OFF
button must be pressed to turn ON the load.
Shading indicates default operation and switch setting.

Fixed Time Delay
(DIP 1&2 OFF, 3 ON)
Visible (DIP #5 ON)
Walk-Through
Mode
(DIP #4 ON)
The UW-100-24 sensor turns the load OFF 3 minutes
after the area is initially occupied, if no motion is
detected after the first 30 seconds. If motion continues
beyond the first 30 seconds, the set time delay applies.
Audible Alerts
The UW-100-24 can provide audible alerts as a warning before the load turns OFF.
Load turns OFF then back ON before delay expires.
Visible Alert
The UW-100-24 sensor can provide a visual alert as a warning one minute
before the load turns OFF.
Delays of 5, 10, 15, 20 (default), 25 or 30 minutes are
available. See DIP SWITCH SETTINGS for information.
SmartSet™ auto
adjust time delay
and Test Mode
The sensor records typical occupancy patterns. Using
this history (which is constantly updated), it chooses an
optimal time delay from 7 minutes (if the space is
usually vacant) up to 30 minutes (if the space gets
heavy usage). SmartSet behavior starts immediately,
and is refined continually as history is collected.
A Test Mode with a short time delay of 5 seconds is set
when DIP switches 1, 2 & 3 are OFF. It cancels
automatically after five minutes, or when you set a
fixed time delay. To restart Test Mode, change the time
delay setting to any fixed amount and then return it to
the Auto/Test setting.
No visual alert for delay expiration warning.
No Visible
(DIP #5 OFF)
No Alerts
"Whistles" twice, at one minute and at 30 seconds
before turning OFF load. “Chirps” 10 seconds before
turning OFF load. “Beeps” three times 10 seconds
before the load goes OFF for Walk-Through.
Audible Alerts
(DIP #6 ON)
No warnings provided.
Walk-Through
The Walk-Through mode shortens the time delay to reduce the amount of time
the load is ON after a brief moment of occupancy, such as returning to an office
to pick up a forgotten item then immediately exiting.
No Walk-Through Walk-Through mode disabled.

COVERAGE PATTERNS
Coverage testing has been performed according to the NEMA WD 7 guideline.
For best performance, use in spaces not larger than 15’ x 15’.
Ultrasonic Sensor
The sensor has two ultrasonic transceivers operating at 40kHz. Detection
sensitivity can be adjusted using the trimpot under the ON/OFF buttons.
Call 800.879.8585 for Technical Support
10'
(3.0m)
7.5’
(2.2m)
20’
(6.1m)
15’
(4.5m)
Ultrasonic
Coverage
Major motion
Minor motion
Top View

INSTALLATION
UW-100-24 Wiring
Visit our website for FAQs: www.wattstopper.com
1. Install the power pack according to its instructions.
2. Connect the power pack wires to the sensor as follows:
RED wire (+24VDC) to the +24V IN terminal on the sensor.
BLACK wire (Return) to common (COMM.) terminal on the sensor.
BLUE wire to control output (CTRL. OUT) terminal on the sensor.
3. Wire the Isolated Relay. The Isolated Relay is rated for 1A @ 30VAC/VDC.
Connect the wires necessary to the application that requires this output:
Normally Closed (N.C.) - Open when occupancy is detected.
Relay Common (must be used for proper operation)
Normally Open (N.O.) - Closed when occupancy is detected.
The bottom terminal on the sensor is not used.
4. Turn the power on.
5. Test and adjust the sensor if necessary.
6. Attach the cover plate.
WARNING
TURN THE POWER OFF AT THE CIRCUIT BREAKER
BEFORE INSTALLING POWER PACKS OR SENSORS.
!
Common
White (Neutral)
Red
(Load)
Red (Line)
White
Black
Hot
Neutral Power
Pack
Blue
Black
Red
Lighting
Load
Control Outputs
+24 VDC
Isolated Relay Outputs
Normally closed contact
Common
Normally open contact
Not used

ON/OFF Button
DIP Switches
Green Ultrasonic
Detection LED
DIP SWITCH SETTINGS
Call 800.879.8585 for Technical Support
Ultrasonic Cones
Ultrasonic Sensitivity
Adjustment Trimpot
Button
Hinges
Tabs
4
Disabled
Enabled
Walk-Through
=ON =OFF
=Factory Setting
5
Disabled
Enabled
Visible Alert
6
Disabled
Enabled
Audible Alert
7
Auto On
Manual On
ON Mode
912345678
Time
Delay
Walk-Through
ON
Not Used
ON Mode
Visible Alert
Audible
Alerts
Auto/Test
10 minutes
15 minutes
20 minutes
25 minutes
30 minutes
override
5 minutes
123
Time Delay
Bypass occupancy & light level
functions. Disable ultrasonic
transmissions. Loads are manually
controlled with UW buttons.
Switches 8 & 9
are not used.

TROUBLESHOOTING
Lights do not turn ON with motion (LED does flash)
1. Press and release each button to make sure that the correct lights come
ON. If the lights do NOT turn ON, check wire connections. If the lights
turn ON, verify that the correct ON Mode is selected in DIP switch 7.
2. Check to see if light level control is enabled: cover the sensor lens with
your hand. If the lights come ON, adjust the light level setting.
3. If lights still do not turn ON, call 800.879.8585 for technical support.
Lights do not turn ON with motion (LED does not flash)
1. Press and release the ON/OFF button. Make sure that the correct lights
come ON. If the lights turn ON, set Ultrasonic Sensitivity to max.
2. Check the wire connections. Verify that connections are tightly secured.
3. If lights still do not turn ON, call 800.879.8585 for technical support.
ADJUSTMENTS
Sensor Adjustment
Remove the wall plate. Remove the button cap by firmly squeezing together the
top sides of the button assembly. Gently pull it away from the unit.
When the adjustments are completed, replace the button cap by inserting its
hinges into the tabs on the main unit and then squeeze the top of the button while
pressing it into the unit. Reinstall the cover plate.
Light Level Adjustment
The light level can be set with loads ON or OFF. To enable light level control and
set the threshold: 1) Make sure the room is lit appropriately. 2) Put the sensor into
TEST mode. You have 5 minutes to complete the procedure. 3) Press and hold the
ON/OFF button for 3 seconds, until you hear a beep. 4) Step away from the sensor.
After 25 seconds a beep sounds, indicating that the threshold level is set. This
threshold is retained, even if power is lost, until it is re-set or disabled.
To disable light level control, press and hold the ON/OFF button for 7 seconds,
until a double beep tone sounds.
Reset to Default
To reset the UW to factory settings, press and hold the ON/OFF button for 10
seconds, until a triple beep sounds. This resets the sensor occupancy history and
disables light level control (the brightest ambient light will not hold the light OFF).

ORDERING INFORMATION
Warranty Information
Watt Stopper/Legrand warranties its products to be free of defects in materials
and workmanship for a period of five years. There are no obligations or
liabilities on the part of Watt Stopper/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.
Units come in White (-W), Light Almond (-LA), Ivory (-I), Gray (-G), Black (-B).
Add color designator to catalog number when ordering.
* One ASP-211 Cover Plate for single gang box is included with each switch.
2800 De La Cruz Boulevard, Santa Clara CA 95050
Technical Support: 800.879.8585 • www.wattstopper.com
07185r1 12/2006
Catalog # Description
UW-100-24 Ultrasonic low voltage wall switch sensor;
18-24VDC, 24VAC or Half-wave rectified AC
BZ-100 Power pack; 120/277VAC, 50/60Hz, 150mA
20A ballast or incandescent, 1hp @120/240VAC
ASP-422 Blank cover plate for 2-gang box
ASP-432 Switch option cover plate for 2-gang box
Lights do not turn OFF
1. There can be up to a 30 minute time delay after the last motion is
detected. To verify proper operation, set DIP switch 1 to ON, then reset
switches 1, 2 and 3 to OFF to start Test Mode. Move out of view of the
sensor. The lights should turn OFF in approximately 5 seconds.
2. Verify that the sensor is mounted at least six feet (2 meters) away from
any heating/ventilating/air conditioning device that may cause false
detection.
3. Verify that the Ultrasonic Sensitivity trimpot is not pointing at “override”
(green LED is always ON). If so, rotate the trimpot to it’s middle setting
(pointing up). The override setting allows users to operate the sensor as a
service switch in the unlikely event of a failure.
4. Verify that DIP switches 1,2, and 3 are not set to “override” (all switches
ON). If they are, change them to an appropriate Time Delay setting.
5. If the lights still do not turn OFF, call 800.879.8585 for technical support.
Sensing motion outside desired areas
Adjust the Ultrasonic Sensitivity. Rotate trimpot counterclockwise to
reduce sensitivity.