wattstopper DT-300 User manual

U.S. Patent: 7,277,012
Santa Clara, CA 95050
DT-300
v3

Occupancy Sensor



Voltage ..........................18-28VDC/VAC, half wave rectified AC
Current Consumption ........................................................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
PIR Coverage (Typical) .....................................................1300 ft2
Sensitivity Adjustment ....... High or Low (DIP switch setting)
Ultrasonic Coverage (Typical)..........................................1300 ft2
Sensitivity Adjustment .........................Min. to Max. (trimpot)
Frequency......................................................................40kHz
UL & CUL Listed for use with WattStopper Power Packs



The WattStopper DT-300 360° Dual Technology occupancy sensors combine
advanced passive infrared (PIR) and ultrasonic technologies into one unit. The
combination of these technologies helps to eliminate false triggering problems even
in difficult applications.
The DT-300 turns lighting systems on and off based on occupancy. The DT-300
provides numerous operating modes that can be combined to create the ideal
custom control. The sensors can be configured to turn lighting on, and hold it on
as long as either or both technologies detect occupancy. 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 DT-300 operates on 24V supplied by WattStopper Power Packs. DT-300 sensors
also have an isolated relay with Normally Open and Normally Closed contacts for
interfacing with HVAC or EMS.

The DT-300 provides a 360° coverage pattern. The coverage shown represents
walking motion at a mounting height of 8-12 feet. For building spaces with lower
levels of activity or with obstacles and barriers, coverage size may decrease. The
coverage for PIR ONLY trigger mode varies with mount height. Refer to pattern
below for details. Ultrasonic coverage is roughly the same for 8-12 foot mount
heights. Refer to PIR and Ultrasonic trigger mode coverage for details.

PIR ONLY Coverage

36 ft
(10.97m)
36 ft x 36 ft
(10.97m x 10.97m)
PIR
Coverage
Ultrasonic
Coverage
Drawings
not to scale,
representative
of PIR and
Ultrasonic Trigger
Mode major
motion coverage



Depending upon obstacles such as furniture or room layout, 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 at least 4 to 6 feet away from air supply
vents.
Mount the sensor to the ceiling. The DT-300 is designed for a ceiling heights of about
8-12 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.
 Opaque adhesive tape is supplied so that sections of the PIR
lens can be masked. This restricts the sensor’s view and allows you to eliminate PIR
coverage in unwanted areas such as hallways outside of the desired coverage area.
Since masking removes bands of coverage, remember to take this into account when
troubleshooting coverage problems. The Ultrasonic coverage cannot be masked, but
you can adjust its sensitivity to reduce the coverage area.
 Position the sensor so that the maximum
coverage is achievable. Be sure that the sensor is not pointing out the door.
8-12 foot Mounting Height

36'
36'
2
0
%
U
ltrason
i
c
O
verlap
Ultrasonic
Coverage
36 ft
(10.97m)
PIR
Coverage
36 ft
(10.97m)
Sensor
2
0
%
U
ltr
aso
ni
c
Overlap

If the space is larger than 30’ x 30’ it will be necessary to use more than one
sensor to ensure complete coverage.
Sensor
36'
36'






Each WattStopper BZ series
power pack can supply power
for 5 DT-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 :
• REDwire(+24VDC)
from power pack to the
 terminal on the
sensor.
• BLACKwire(Return)
from power pack to
 terminal on
the sensor.
• BLUEwirefrompower
pack to  terminal on sensor.
 such as the LVS-1 Momentary Toggle Switch, or RS2-3
Low Voltage Momentary Switch to the above applications (see wiring diagram
“Manual-On wiring with low voltage momentary switch”) – connect:
• Wirefromonesideofswitchto+24V terminal on sensor.
• WirefromothersideofswitchtoMan Switch terminal on sensor.
 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

DT-300
360°Dual Technology
Occupancy Sensor
U.S.Patents:
5,640,113
Patent Pending
PIR & 40kHz Ultrasonic
+24VDC/VAC
Connect to Watt Stopper
Class 2 Power Packs
For Indoor Use Only
02828r4
C US
LISTED
88T9
Appliance
Control
800.879.8585
Relay Com.
N.O.
N.C.
Control Out.
Man. Switch
+24V
Common
v3
www.wattstopper.com




• 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.
Load #1
Load #2
(Optional)
DT-300
Standard wiring with local off switch
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
White
Black
Red
Line Voltage
Wire Color Legend



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
DT-300
Common
Man.Switch
+24V
Jumper
Back
of
LVS-1
For low voltage
momentary switch use
trigger option 6 or 7
White
Black
Red
Line Voltage
Wire Color Legend




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.

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.
Rear
housing
Depluggable terminal
Front
cover
Ceiling
Spring clips (2)

Rear
housing
Depluggable
terminal
4" Octagonal J-Box
(at least 1.5" deep)
Front
cover
Ceiling
Screws






The sensors are factory preset to allow for quick installation in most applications.
Verification of proper wiring or coverage, or 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
Logic Configuration and Time Delay
to the desired settings. See “Logic
Configuration Chart”.

1. Ensure the Time Delay is set for
 using the “Test Mode/20 minutes” setting. (DIP switches 1, 2, & 3 are
OFF).
2. Ensure that the Light Level is at default (maximum). Press and hold the
pushbutton for 5 seconds or until the Green LED flashes rapidly. Wait 10 seconds
for the flashing to stop.
3. Ensure that the Ultrasonic Sensitivity trimpot is set to about 70%, clockwise.
4. Remain still. The red and green LEDs should not flash. The lights should turn off
after 5 seconds. (If not, see “Troubleshooting.”)
5. Move around within 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.
 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  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
Light level pushbutton
DIP switches
PIR lens
Ultrasonic
sensitivity
trimpot
ON
12345678
ECE
Ultrasonic
transducer
cones
Ultrasonic
activity
LED (Green)
PIR Activity
LED (Red)



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.

• 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 from LED is disabled when the Light Level
feature is enabled. PIR occupancy indicator LED may still respond when
lights are being held off. LEDs 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.

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 LEDs turn On. Do not exceed 5 seconds.* The sensor enters
setup mode, as indicated by the rapidly flashing LEDs. The LEDs will flash
throughout the setup process. Occupancy indications from the LEDs are
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.


5. When the two LEDs stop flashing, replace the Front Cover

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(s)
turn ON and then OFF. the LEDs flash rapidly for 10 seconds after the setting has
changed.
.




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 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.

• Minimumforcesareduceddetectionrangeforthe
PIR.
• MaximumcausestheDT-300tomonitorthe
controlled environment and automatically select
the maximum sensitivity that will provide reliable
operation without false detection. This setting is
constantly updated.

The DT-300 has 8 logic configurations for occupancy
triggers, set with DIP switches 6, 7 & 8. Determine the
appropriate Occupancy Logic Option using the Trigger
matrix, then set the DIP switches accordingly.
The method that activates a change
from “Standby” (area unoccupied and loads are OFF) to
“Occupied” (area occupied and loads are ON).
•  requires detection by PIR Ultrasonic.
•  requires detection by only one technology.
•  requires detection by the PIR.
•  requires activation of the Manual Switch. (See
Manual ON functions” for further information.)
The method indicating that the
area is still occupied and the lights should remain ON.
After the time delay elapses and the lights
turn OFF, detection by the selected technology within the
number of seconds indicated turns the lights back ON.
Standard
Option 2
Option 3
Option 1
Trigger
Option 4
Option 5
Initial
Occupancy
Maintain
Occupancy
Re-trigger
(seconds
duration)
Occupancy Logic
Both
Both PIR
Both(5)
Either(5)
Either
EitherEither
Either
Either(5)
Either(5)
Either
PIR
PIR
PIR(5)
Either(30)
Either(5)
Either
= ON
= OFF
678
Standard
Option 2
Option 3
Option 1
Option 4
Option 5
Option 6
Option 7
Standard
Standard
Switch#
Occupancy
Logic
= Factory Setting
5 minutes
10 minutes
15 minutes
20 minutes
25 minutes
30 minutes
30 seconds
123
Time Delay

Test Mode/20 min
5
Minimum
PIR Sensitivity
Walk-Through
Enabled
Disabled
4
Maximum
PIR
PIR




Settings
Man.
Man. PIR Both(30)
Feature
Option 6
Option 7




The Manual ON function is facilitated by installing a momentary switch such as
Watt Stopper LVS-1 Momentary Toggle Switch, or RS2-3 Low Voltage Momentary
Switch.The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 DIP switch settings for Occupancy Logic.
 (Trigger Option 6 or 7): In this mode, the switch  to turn on
the load. The sensor keeps 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 load turns OFF and the manual switch must be used to turn ON the load.
 (any Trigger Option except 6 or 7): These options use occupancy
triggers 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 using the manual switch and it stays on according to
the occupancy logic setting. The time delay operates as programmed. When the
load turns OFF due to lack of occupancy detection, it can be turned ON again by
occupancy detection or the switch.
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. The length of the time delay after the
last occupancy detection, 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.
• Oncereturningtoautomatic-onmode,eithertheswitchoroccupancy
detection can turn the load ON.

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 LEDs 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.




1. Check DIP switch settings.
2. Make sure the switches are set according to the defined settings in the DIP Switch
Setting chart.


1. Check that the circuit breaker has been turned back on.
2. Check all sensor and power pack wire connections.
3. Check for 24VDC input to the sensor between the red and black low voltage wires.
• If24VDCispresent,replacethesensor.
• If24VDCisnotpresent,checkthehighvoltageconnectionstothepower
pack.
• Ifhighvoltageconnectionsaregoodandhighvoltageispresent,replacethe
power pack.

1. When power is initially applied to the sensor, there is a warm-up period of 30 to 60
seconds before the LED becomes active.
2. Make sure PIR sensitivity is set to 100% (DIP switch #5 is in the “off” position).

Ultrasonic sensitivity setting may need to be increased. Turn adjustment trimpot
clockwise until the LED begins to flash when movement occurs.

Check ultrasonic sensitivity trimpot. Fully counterclockwise position is the override
for the sensor. Turn trimpot clockwise until LED flashes only when movement occurs
in the desired coverage area.







1. Check all sensor and power pack connections.
2. Check if Light Level is enabled.
• IfoccupancyindicatorLEDsblinktogether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).
3. Check for 24VDC at the power pack blue and black wire connections to sensor
while sensor is active.
• Ifthereisnovoltage,replacethesensor.
• Ifthereisvoltage,checkfor24VDCbetweentheblueandblackwireatthe
power pack. If 24VDC is present and the relay is not closing, replace it.
• If24VDCisnotpresent,checkforabreakinthelowvoltagewiring.
4. If LEDs are flashing rapidly (~10Hz), an overload condition exists. When this
is corrected, the sensor will return to normal operation. Check the blue wire
connection. If necessary, replace the power pack.


Reduce ultrasonic sensitivity by turning adjustment pot counter-clockwise until it
only flashes when movement occurs.

Check to see if you have used the Manual Switch connection. Do not connect
anything to this terminal if you are not using a low voltage momentary switch
between the sensor and power pack.

Set PIR sensitivity to minimum by turning DIP switch 5 to the “on” position.

1. Check all sensor and power pack wire connections.
2. Disconnect power pack blue wire.
• Iflightsdonotturnoff,checkpowerpackwiring.Replacethepowerpackif
necessary.
• Iflightsturnoff,theproblemmaybethesensororwiringbetweenthe
sensor and power pack.


To override all sensor functions, set the Ultrasonic Sensitivity trimpot to the fully
counterclockwise (Service) position.
This bypasses the occupancy control functions of the sensor, but still allows the
lights to be manually controlled with a light switch, if one is installed.
3. Reconnect the blue wire.
• Turnsensitivityandtimedelaytominimum,andallowthesensortotime
out.
• Iflightsturnoff,thesensorisworkingproperly–adjustsensitivityandtime
delay for the sensor.
• Iflightsdonotturnoff,checkthewiringbetweenthesensorandpower
pack.
• Ifwiringiscorrect,replacethesensor.


 
DT-300 Dual Technology Occupancy Sensor, 360° Low Voltage
w/Isolated Relay and light level sensor
DT-305 Dual Technology Occupancy Sensor, 360° 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
All sensors are white.
BZ series power packs supply power for up to 5 DT-300 sensors.



Please
Recycle

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.
2800 De La Cruz Boulevard, Santa Clara, CA 95050
Technical Support: 800.879.8585
www.wattstopper.com
17003r4 6/2013