LEGRAND WattStopper UT-300 Series User manual

UT-300
v3
Ultrasonic • Low Voltage
Occupancy Sensor
with Light Level, Isolated Relay and Manual On feature
Specifications
Voltage ..........................18-28VDC/VAC, half wave rectified AC
Current Consumption
Model UT-300-1, Model UT-300-2.............................25 mA
Model UT-300-3 .........................................................25 mA
Power Supply ..................................WattStopper Power Packs
Isolated Relay Rating ...................................... 1A @30VDC/VAC
Operating Temperature..................... 32° to 131°F (0° to 55°C)
Light Level One-Step Adjustment .......................10FC - 300FC
Time Delay Adjustment....................30 seconds to 30 minutes
Walk-Through Mode ...3 minutes if no activity after 30 sec.
Test Mode............................... 5 sec. upon DIP switch reset
Ultrasonic Coverage
Model UT-300-1 ................................................ up to 500 ft2
Model UT-300-2 .............................................. up to 1000 ft2
Model UT-300-3 .............................................. up to 2000 ft2
Sensitivity Adjustment...... Minimum to Maximum (trimpot)
Frequency ................................................................... 40kHz
UL & CUL Listed for use with WattStopper Power Packs
Installation Instructions
U.S. Patents: 7,277,012
Santa Clara, CA 95050

Call 800.879.8585 for Technical Support
UNIT DESCRIPTION
The WattStopper UT-300 sensors turn lighting systems on and off based on
occupancy.
The UT-300 can be configured to turn lighting on, and hold it on as long as it detects
cccupancy. After no movement is detected for a user specified time (30 seconds
to 30 minutes) the lights are switched off. A “walk-through” mode can turn lights
off after only 3 minutes, if no activity is detected after 30 seconds of an occupancy
detection.
The UT-300 operates on 24V supplied by WattStopper Power Packs. The sensors can
operate on 24VDC, 24VAC, or half wave rectified AC. UT-300 sensors also have an
isolated relay with Normally Open and Normally Closed contacts for interfacing with
HVAC or EMS systems.
COVERAGE PATTERN
The UT-300 is available in 3 models. Each model has a different size coverage
pattern. The coverage shown represents walking motion at a mounting height of
8 to 10 feet. For building spaces with lower levels of activity or with obstacles and
barriers, coverage size may decrease.
0'
5'
12'
16'
23'
0'
5'
16'23'45' 12'
12'
16'
23'
12' 16' 23' 45'
UT-300/305-3
UT-300/305-2
UT-300/305-1
UT-300/305-3
HALLWAY
APPLICATION
Drawings not to scale.

PLACEMENT GUIDELINES
Depending upon obstacles such as furniture or partitions, the area of coverage may
be less or more than the sensing distances shown in the coverage pattern. This
must be considered when planning the number of sensors and their placement. It is
also recommended to place the sensor 4 to 6 feet away from air supply ducts.
Mount the sensor to the ceiling. The UT-300 is designed for a ceiling height of about
8-10 feet. Mounting above or below this range will significantly affect the coverage
patterns. As a general rule, each occupant should be able to clearly view the sensor.
Open Ofce Area Coverage: To get complete coverage in an open office area, install
multiple sensors so that there is approximately 20% overlap with each adjacent
sensor’s ultrasonic coverage area.
One UT-300
Coverage Area
20%
Ultrasonic
Overlap
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WIRING DIRECTIONS
Each WattStopper BZ series power pack
can supply power for 5 UT-300 sensors.
When using more sensors than this,
multiple power packs are required.
Refer to the wiring diagram on the next
page for the following procedures:
Connect the low voltage:
•RED wire (+24VDC) from power pack
to the +24V terminal on the sensor.
•BLACK wire (Return) from power
pack to Common terminal on the
sensor.
•BLUE wire from power pack to
Control Out terminal on sensor.
To add a MANUAL SWITCH such as the LVS-1 Momentary Toggle Switch, or RS2-3
Low Voltage Momentary Switch to the above applications–connect:
•Wire from one side of switch to +24V terminal on sensor.
•Wire from other side of switch to Man Switch terminal on sensor.
Wiring the ISOLATED RELAY: (The Isolated Relay is rated for 1A@30VAC/VDC)
Connect the wires necessary to the application that requires this output:
•Relay Common (must be used for proper operation)
•N.O. (Normally Open)–Closed when occupancy is detected
•N.C. (Normally Closed)–Open when occupancy is detected
CAUTION
TURN POWER OFF AT THE CIRCUIT BREAKER BEFORE
INSTALLING POWER PACKS OR SENSORS.
Call 800.879.8585 for Technical Support
UT-300
Ultrasonic
Occupancy Sensor
U.S.Patents:
5,640,113
Patent Pending
40kHz Ultrasonic
+24VDC/VAC
Connect to Watt Stopper
Class 2 Power Packs
For Indoor Use Only
03620r2
Relay Com.
N.O.
N.C.
Control Out.
Man. Switch
+24V
Common
LISTED
88T9
Appliance
Control
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800.879.8585
v3
Wiring
terminals

Load #1
Load #2
(Optional)
UT-300
Rear Housing
Depluggable
Terminal
Front Cover
Ceiling
Spring Clips (2)
Blue
Control Out
+24V
Common
Low Voltage
Class 2
Line
Voltage
Line
Neutral Feed Through
Power Pack
Black
Red
#1 #2
Line Voltage
Switches
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White
Black
Red
Line Voltage
Wire Color Legend
Standard wiring with local off switch
CONNECTING WIRES
• Care should be taken to separate high voltage power from low voltage (Class 2)
control wiring.
• All connections to sensor are low voltage, Class 2.

LVS-1
Load
Rear Housing
Depluggable
Terminal
Front Cover
Ceiling
Spring Clips (2)
Blue
Control Out
Black
+24V
Low Voltage
Class 2 Line Voltage
Line
Neutral Feed Through
Power Pack
Man. Switch
Red
UT-300
Common
For low voltage
momentary switch, set
DIP switch #6 ON
Man.Switch
+24V
Jumper
Back
of
LVS-1
White
Black
Red
Line Voltage
Wire Color Legend
Manual-On wiring with low voltage momentary switch
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Rear
housing
Depluggable terminal
Front
cover
Ceiling
Spring clips (2)
MOUNTING THE SENSOR
Directly to Ceiling
1. Attach the plastic spring clips to
the edge of the sensor in the slots
provided.
2. Cut a 3.5” to 4” round hole in
the acoustic ceiling tile at the
mounting location. A 3.5” hole is
recommended for a secure fit.
3. Pull the low voltage wire from the
power pack to the sensor through
the hole.
4. Connect the low voltage wires to
the appropriate terminals on the
sensor.
5. Push the sensor up through the
hole until the Spring Clips hold the
sensor securely in place.
6. Snap the front cover onto the
sensor.
Using an Octagonal J-Box
1. Pull the low voltage wires from
the power pack into the J-Box
through the conduit knockout.
2. Connect the low voltage wires
to the appropriate terminals on
the sensor.
3. Loosen the appliance mounting
screws attached to the J-Box
4. Align the sensor in the J-Box so
that the mounting screws on the
box match the key holes on the
sensor’s rear housing.
5. Push the sensor up into the
J-Box and twist it so that the mounting screws are seated in the keyhole slots.
6. Tighten the two screws to secure the sensor to the J-Box.
7. Snap the front cover onto the sensor.
Ceiling Mount
Rear
Housing
Depluggable
Terminal
4" Octagonal J-Box
(at least 1.5" deep)
Front
Cover
Ceiling
Screws
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SENSOR ADJUSTMENT
This unit is pre-set for basic operation as described
in this guide. Adjustment is optional.
The sensors are factory preset
to allow for quick installation in
most applications. Verification
of proper wiring, coverage,
and customizing the sensor’s
settings can be done using the
following procedures. To make
adjustments, open the Front
Cover by pulling on the cover tab.
Before making adjustments,
make sure the office furniture
is installed, lighting circuits are
turned on, and the HVAC systems
are in the overridden/ on position. VAV systems should be set to their highest
airflow. Set the Time Delay to the desired settings. See “DIP Switch Setting”.
To Test Occupancy Sensors
1. Ensure the Time Delay is set for Test Mode* using the “Test Mode/20 minutes”
setting (DIP switches 1,2 & 3 are off).
2. Ensure that the Ultrasonic Sensitivity trimpot is set to about 70%, clockwise.
3. Ensure that the Light Level is at default (maximum). See the Light Level
Feature section of this document for instructions.
4. Remain still. The green LED should not flash. The lights should turn off after 5
seconds. (If not, see “Troubleshooting.”)
5. Move about the coverage area. The lights should come on. Adjust the
Ultrasonic Sensitivity as necessary to provide the desired coverage (Green
LED indicates activation from the ultrasonic sensor).
When testing and adjustment is complete, reset DIP Switches and Light Level to the
desired settings, and replace the cover on the sensor.
* Test Mode is a temporary state that starts when you first set the sensor’s DIP
switches for the “Test Mode/20 minutes” (switches 1, 2, 3 OFF). If you need to
invoke the Test Mode and the DIP switches are already set for Test Mode/20
minutes, toggle DIP switch 1 ON then back to the OFF position. This provides a 10
minute test period. During the test period, the Time Delay is only 5 seconds.
Keyhole slots
(for mounting to
4" octagonal box)
Double gang
mudring
mounting holes
DIP switches
Ultrasonic
sensitivity trimpot
ON
12345678
ECE
Ultrasonic
transducer
cones
Ultrasonic
activity
LED (Green)
Light level
pushbutton
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LIGHT LEVEL FEATURE
The Light Level feature holds lights off upon initial occupancy if adequate ambient
light exists. It will not turn the lights off if they are on. The default setting is for
maximum, meaning that even the brightest ambient light will not hold the lights
off.
Notes on Functionality
• Avoid mounting the sensor close to lighting fixtures
• Adjust during daylight hours when ambient light in the area is at desired
level.
• Light Level cannot be enabled while Test Mode is active. Either wait for
Test Mode to expire or select any of the other Time Delay settings before
enabling the Light Level feature.
• Ultrasonic occupancy indicator LED is disabled when the Light Level
feature is enabled. LED will also flash periodically to indicate the sensor
has Light Level enabled.
• Light Level settings are only saved in the event of a power loss. Disabling
Light Level and then reenabling it will not return it to previous settings.
• If Test Mode is enabled after Light Level has been set, Light Level
functionality will cease to function throughout the duration of Test Mode.
When Test Mode period expires, the Light Level functionality will resume,
even if the Dip Switches remain set to Test Mode.
Setting Light Level
1. Make sure Test Mode is not active.
2. Toggle the state of the sensor, by briefly pressing the Light Level button,
to include or exclude the lighting load from the light level calibration.
Open the Front Cover and locate the LIght Level pusbbutton. See Sensor
Adjustment.
3. Press and hold the Light Level button for 2 or more seconds, or until the
detection LED turns On. Do not exceed 5 seconds.* The sensor enters
setup mode, as indicated by the rapidly flashing LED. The LED will flash
throughout the setup process. Occupancy indications from the LED is
disabled during setup.
4. Move away from the sensor to avoid interference with light level detection.
The sensor measures the light level for a 10 second period, then averages
the readings and automatically sets the level that will be used as the new
setting. The sensor will hold lights off when the ambient light exceeds this
setting.

Call 800.879.8585 for Technical Support
5. When the LED stops flashing, replace the Front Cover.
*Disabling Light Level
Pressing the pushbutton for 5 seconds or more resets the light to default (maxi-
mum).
Press and hold the Light Level button for 5 seconds or until the detection LED
turns ON and then OFF. the LED flashes rapidly for 10 seconds after the setting has
changed.
.

DIP SWITCH SETTING
The UT-300 has 6 DIP switches under the cover.
Time Delay: Switches 1, 2, 3
The sensor will hold the lights ON as long as
occupancy is detected. The time delay countdown
starts when no motion is detected. After no motion is
detected for the length of the time delay, the sensor
will turn the lights OFF.
Walk Through Switch 4
Walk-through mode turns the lights OFF three 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 selected time delay
applies.
Service: Switch 5
To override all sensor functions, set DIP switch 5 to the
ON position. The green LED will come on and stay on
for the duration of the override.
This bypasses the light level and occupancy detection
control functions of the sensor, but still allows the
lights to be manually controlled with a light switch, low
voltage switch, or Light Level button.
On Mode: Switch 6
The Manual ON function is facilitated by installing a momentary switch such as a
WattStopper LVS-1 Momentary Toggle Switch, or RS2-3 Low Voltage Momentary
Switch. This switch connects to the sensor’s Manual (Man.) Switch and +24V
terminals as shown in the wiring diagram. Each time the switch is pressed, the load
changes state. The sensor’s operation as related to the manually operated switch is
determined by the setting for DIP switch 6.
Manual On: In this mode, the switch is required to turn on the load. The sensor is
then used to keep the load on, based on occupant activity. After the time delay ends,
if there is no movement detected within the 30 second re-trigger period the manual
switch must be used to turn ON the load.
Automatic On: This mode uses occupancy as well as switch activation to turn the
load ON. A manual switch provides the following additional functionality:
a. The load can be turned ON by manual switch activation and it stays on as long as
occupancy is detected. The sensor time delay operates as programmed. When
the load turns OFF due to lack of occupancy detection, the load can be turned ON
Logic Conguration Chart
Switch#
5 minutes
10 minutes
15 minutes
20 minutes
25 minutes
30 minutes
30 seconds
123
Time Delay

Test Mode/20 min
5
Auto On
Manual On


6
Normal
Service
Service
= ON
= OFF
= Factory Setting

4
Disabled
Enabled
Walk-Through
On Mode
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OVERLOAD PROTECTION
The occupancy sensor has a built in overload protection function that will
automatically turn off the control output when the load current exceeds
200mA. The sensor LED will then blink rapidly (~ 10Hz) to provide a
visual indication of an overload condition. When the load current is
corrected or returns to normal, the control output will turn back on.
TROUBLESHOOTING
CAUTION
TURN POWER OFF AT THE CIRCUIT BREAKER
BEFORE WORKING WITH OR NEAR HIGH VOLTAGE.
For any unexpected operation
1. Check DIP switch settings.
2. Make sure the switches are set according to the defined settings in the DIP
Switch Setting chart.
Lights do not turn on with occupancy, and the LED does not ash:
1. Check that the circuit breaker has been turned back on.
2. The Ultrasonic Sensitivity setting may need to be increased.
Turn clockwise as needed.
3. Check all sensor and power pack wire connections.
4. Check for 24V input to the sensor.
- If 24V is present, replace the sensor.
- If 24V is not present, check that high voltage is present to power pack.
If it is, replace power pack.
again by occupancy detection or switch activation.
b. Activating the manual switch while the load is ON turns the load OFF.
• When the load is turned OFF manually, as long as the sensor continues to
detect occupancy the load stays OFF. For the selected time delay, the lights
stay off and the sensor reverts to the automatic-on mode.
• When the load is turned OFF manually, pressing the switch again turns the
load ON and the sensor reverts to the automatic-on mode.
Call 800.879.8585 for Technical Support

Lights do not turn off automatically
1. The sensor may be experiencing activations from outside the controlled area or
from some type of interference (see “Unwanted Sensor Activations” below).
2. Check all sensor wire connections.
3. Disconnect power pack’s blue wire:
If the lights do not turn off, replace power pack. Reconnect blue wire.
If the lights turn off, the problem may be in the sensor–to check:
Reconnect the blue wire.
Turn sensitivity and time delay to minimum and allow the sensor to time out.
If the lights turn off, the sensor is working properly (see number 1, above, and
“Sensor Adjustment” for readjustment of sensor).
4. Set sensitivity and time delay to minimum and allow the sensor to time out.
If the lights turn off, the sensor is working properly (see number 1, above, and
“Sensor Adjustment” for readjustment of sensor).
Unwanted Sensor Activations (LED ashes):
• Possible causes
1. The ultrasonic sensitivity may be too high causing detection outside of desired
coverage area.
2. Sensor located too close to HVAC or VAV vents with heavy air flow.
3. If LED is flashing rapidly (~10Hz), an overload condition exists. When this is
corrected, the sensor will return to normal operation.
4. Check if Light Level is enabled.
• If occupancy indicator LED blinks every few seconds, sensor is using Light
Level feature.
• If Light Level functionality is not desired, press and hold for 5 seconds to
return sensor to the default setting (maximum).
• Possible solutions
1. Reduce the ultrasonic sensitivity (counterclockwise) as needed (see “Sensor
Adjustment”).
2. Relocate the sensor.
3. Check the blue wire connection. If necessary, replace the power pack.
Visit our website for FAQs: www.wattstopper.com

Catalog # Description
UT-300-1 Ultrasonic Occupancy Sensor, up to 500 sq ft coverage,
Low Voltage w/Isolated Relay and Manual On feature
UT-300-2 Ultrasonic Occupancy Sensor, up to 1000 sq ft coverage,
Low Voltage w/Isolated Relay and Manual On feature
UT-300-3 Ultrasonic Occupancy Sensor, up to 2000 sq ft coverage,
Low Voltage w/Isolated Relay and Manual On feature
UT-305-1/2/3 Ultrasonic Occupancy Sensor, Low Voltage
BZ-50 Power Pack: 120/277VAC, 50/60Hz, 225mA, 20A ballast
or incandescent, 1HP@120/250VAC
BZ-150 Power Pack: 120/277VAC, 50/60Hz,
225mA, 20A ballast or incandescent, 1HP@120/250VAC
S120/277/347E-P Auxiliary Relay Pack: 120/277VAC, 60Hz, 20A Ballast
347VAC, 60Hz, 15A Ballast
ORDERING INFORMATION
All sensors are white.
BZ series power packs supply power for up to 5 UT-300 sensors.
Call 800.879.8585 for Technical Support

WARRANTY INFORMATION
WattStopper 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 WattStopper 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.
Please
Recycle
2800 De La Cruz Boulevard, Santa Clara, CA 95050
Technical Support: 800.879.8585 • www.wattstopper.com
2800 De La Cruz Boulevard, Santa Clara, CA 95050
Technical Support: 800.879.8585
www.wattstopper.com
17025r2 3/2013
Please
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