LEGRAND Pass & Seymour WDT301 User manual

No: 341098 – 10/14
Pass & Seymour®
Dual Technology Multi-Way Wall Switch Occupancy Sensor
Installation Instructions
Catalog Numbers: WDT301, WDT321
Country of Origin: Made in China
UNIT DESCRIPTION AND OPERATION
The WDT Dual Technology Multi-Way Wall Switch sensors combine advanced passive infrared (PIR) and ultrasonic
technologies into one unit. The combined technologies help to eliminate false triggering even in difficult applications.
Selectable operating modes allow the sensor to turn a load ON, and hold it ON as long as either or both
technologies detect occupancy. It allows for up to 4 sensors to be connected to the same circuit. The first sensor
to detect occupancy will turn ON all the lights that are connected to the same circuit. After the room is unoccupied,
the last sensor that detected occupancy turns OFF all the lights once the time delay has expired. The occupant
can turn OFF the load at any time by pressing the ON/OFF button of any sensor that is connected to the circuit.
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 WDT301 has one relay and one ON/OFF button. The WDT321 contains two relays and two ON/OFF buttons
to allow control of one or two loads independently. Pressing a button toggles the state of the corresponding relay.
Optional Neutral is also available on all models.
WDT sensors contain 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. In the WDT321, light level only affects the load on Relay 2. Users can
override this function by pressing the ON/OFF button. See the Light Level Adjustment section.
Turning Load(s) ON (ON Mode)
The relays are programmed independently for either Auto ON or Manual ON. In either mode, the load can be
turned ON or OFF using the ON/OFF button.
Manual ON
DIP 8 ON for Relay 1
DIP 9** ON for Relay 2
With an ON Mode DIP switch in the ON position, the occupant 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-retrigger delay. If
occupancy is detected 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.
Auto ON
DIP 8 OFF for Relay 1
DIP 9** OFF for Relay 2
With an ON Mode DIP switch in the OFF position, the load turns ON and OFF
automatically based on occupancy. If the load is turned OFF manually, Presentation
Mode operation applies. 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.
**WDT301: Switch 9 is not used. WDT302: Switch 9 default is ON to comply with CA Energy Commission Title 24
bi-level switching requirements.
Model # Relay Default ON Mode DIP switch # Setting
WDT301 1Manual ON 8ON
WDT321 1Auto ON 8OFF
2Manual ON 9ON
Presentation Mode
Presentation Mode is a feature of the Auto ON mode.When both relays are manually turned OFF the WDT holds
the lights OFF until no motion has been detected for the duration of the Time Delay. With subsequent occupancy,
the WDT turns the load ON. If both relays are ON and one relay is manually turned OFF this relay remains OFF
until both the Time Delay and retrigger delay expires for the relay that is ON, after that time the ON Mode control
settings again apply.
Time Delays
The WDT sensor holds the load ON until no motion is detected for the selected time delay. Select the time delay
using DIP switch settings. In the WDT321, both relays use the same delay. See DIP SWITCH SETTINGS for
more information.
Test/20 min
(DIP 1, 2, OFF)
A Test Mode with a short time delay of five seconds is set when DIP switches 1 &
2 are OFF. It cancels automatically after ten minutes, or when you set a fixed time
delay. When the Test Mode times out, the sensor will assume a 20 minute time delay.
To restart Test Mode, change the time delay setting to any fixed amount and then
return it to the Test setting.
Time Delay
(15 min. DIP 1 ON &
2 OFF)
Time delays are 5, 15 (default), or 30 minutes are available.
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.
Walk-Through Mode
(DIP #3 ON)
The WDT 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.
No Walk-Through Walk-Through mode disabled (default).
PIR Sensitivity Adjustment
The WDT sensor constantly monitors the controlled environment and automatically adjusts the PIR to avoid
common ambient conditions that can cause false detections, while providing maximum coverage.
High
(DIP #5 OFF)
Default setting. Suitable for most applications.
Low, 50%
(DIP #5 ON)
Reduces sensitivity by approximately 50%. Useful in cases where the PIR is detecting
movement outside of the desired area (also consider masking the lens) and where
heat sources cause unnecessary activation.
Alerts
The WDT can provide audible alerts as a warning before the load turns OFF.
Audible Alerts
(DIP #7 ON)
Unit will beep at one minute*, at 30 seconds and at 10 seconds before turning OFF
load. When Walk-Through is active, the unit beeps three times at 10 seconds before
the load goes OFF.
No Audible Alerts
(DIP #7 OFF)
No audible warnings provided.
Trigger Mode
The WDT sensor has four occupancy trigger options, set with DIP switches 5 and 6. Determine the appropriate
option using the Trigger matrix.
In the Trigger Mode DIP switch setting table, in order to deem the area occupied:
• Both requires motion detection by the PIR and the Ultrasonic.
• Either requires motion detection by only one technology.
• PIR requires motion detection by the PIR.
Initial Occupancy: The method that activates a change from “Standby”
(area unoccupied and load off) to “Occupied” (area occupied and load may
turn ON).
Maintain Occupancy: The method indicating that the area is still occupied
and the lights should remain ON.
Re-trigger: In Auto On Mode, after the load turns off, detection by the selected technology within the number
of seconds indicated turns the lights back ON. If the load was configured as Manual ON, the re-trigger time is
30 seconds.
COVERAGE PATTERNS
Coverage testing has been performed according to the NEMA WD 7 guideline. For best performance, use in spaces
not larger than 18' x 15'.
PIR Sensor
The sensor has a two-tiered, multi-cell viewing Fresnel
lens with 180 degree field of view. The red LED on the
sensor flashes when the PIR detects motion.
Masking the Lens
Opaque adhesive tape is supplied so that sections of
the PIR sensor’s view can be masked. This allows you
to eliminate coverage in unwanted areas. Since masking
removes bands of coverage, remember to take this into
account when troubleshooting coverage problems.
Ultrasonic Sensor
The sensor has two ultrasonic transceivers operating at
40 kHz. Detection sensitivity can be adjusted using the
trimpot under the ON/OFF buttons.
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 (see Time Delay switches). You have 10 minutes to complete the procedure.
3. Press and hold the ON/OFF button (Relay 1 button on the WDT321) for 3 seconds, until you hear a beep.
4. Step away from the sensor. After 10 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. In the WDT321, light level control only
affects Relay 2.
To disable light level control, press and hold the Relay 1 button for 7 seconds until a double beep tone sounds.
Reset to Default
Use the DIP Switch Settings tables to return features to factory settings. To reset the WDT, press and hold the
Relay 1 button for 10 seconds until a triple beep sounds. This resets the sensor and disables light level control
(the brightest ambient light will not hold the light OFF).
INSTALLATION
WARNING
Turn off the power at the circuit breaker before installing
the sensor or working on the load.
1. Make sure that the power has been turned OFF at the circuit breaker.
2. Connect wires to the WDT flying leads as shown in the wiring diagram that is appropriate
to the WDT model and electrical supply. The ground wire (green) must be fastened
to ground for the sensor to work properly.
3. Attach the sensor to the wall box by inserting screws into the two wide holes on the top
and bottom of the attached metal bracket. Match them up with the holes in the wall box
and tighten.
4. Turn the circuit breaker ON. Wait one minute, then push the Auto ON/OFF switch for each load and the lights
will turn ON. There is a delay due to initial power-up of the sensor that only occurs during installation.
5. Test and adjust the sensor if necessary.
6. Install industry standard decorator wall switch cover plate (not included).
OPTIONAL NEUTRAL WIRING
For applications requiring neutral wiring, remove tab as shown to expose terminals for wiring.
SPECIFICATIONS
Voltages: .............................................................................................120/277 VAC, 50/60 Hz
Load Limits for relay 1:
@120 VAC.............................................. 1000-W tungsten, ballast, E-ballast, LED, 1/4 HP
@277 VAC.............................................................. 1200-W ballast, E-ballast, LED, 1/4 HP
Load Limits for relay 2:
@120 VAC................................................ 800-W tungsten, ballast, E-ballast, LED, 1/6 HP
@277 VAC.............................................................. 1200-W ballast, E-ballast, LED, 1/6 HP
Time Delay Adjustment .................................................................................... 5 to 30 minutes
Walk-Through Mode.........................................................3 minutes if no activity after 30 sec.
Test Mode................................................................................. 10 min. with 5-sec. time delay
PIR Adjustment ......................................................................................................High or Low
Ultrasonic Adjustment .....................................................................Minimum to Maximum, Off
Frequency...................................................................................................................40 kHz
Light Level Adjustment......................................................................................... 8fc to 180+fc
Alerts .............................................................................................Selectable Audible & Visual
Optional Neutral ....................................................................................................... All models
Multi-Way Capability................................................................................................. All models
Terminal screw torque...............................................................................16 lbf-in (18 kgf-cm)
WDT301 WDT321
4'
(1.2m)
13'
(4.0m)
35'
(10.6m)
0
Side View
PIR
Coverage
7.5'
(2.2m)
15'
(4.5m)
20'
(6.1m)
35'
(10.6m)
Major motion
Minor motion
Ultrasonic
Coverage
10'
(3.0m)
7.5'
(2.2m)
13'
(4.0m)
10'
(3.0m)
Major motion
Minor motion
Top View
Load
Red
Black
Neutral
Line
Green Neutral
(optional)
Ground
Yellow
WDT301 Wiring
RedBlack
Neutral
Line
Green
Ground
Blue
Primary
Load
Secondary
Load
Neutral
(optional)
Brown
Yellow
WDT321 Bi-Level Wiring
RedBlack
Neutral
Line 1
Green
Ground
Blue
Primary
Load
Brown Secondary
Load
Line 2
Neutral
Neutral
(optional)
Yellow
WDT321 Dual Circuit Wiring
5 6
Trigger
Mode
Initial
Occupancy
Maintain
Occupancy
Re-trigger
(seconds
duration)
Option C
Both Both Both (5)
Standard
Either (5)Either
Option A
Either Either (5)PIR
Both
Option B
PIR PIR PIR (5)
Breakaway tab
Optional neutral
terminals behind
breakaway tab
8" flying leads for
line, load, ground and
multi-way connections
WDT321 shown.
The WDT301 does not
include these two leads
Yellow
Red Green
Brown
Blue
Black
Neutral Optional Wiring
Strip Gage
1/2"
12.7 mm
Copper Wire Only
#12–#14 AWG

800.223.4185
1.877.BY.LEGRAND
www.legrand.us
www.legrand.ca
341098 – 10/14
© Copyright 2014 Legrand All Rights Reserved.
For covering patents, see www.legrand.us/patents
MULTI-WAY
The Multi-Way capability is available on all models. Sensors can easily be wired together for convenient control of a
common load. When wiring this way, only use WDT300 series sensors.
The following princlples apply for Multi-Way:
• All units can see each other’s push button events and respond accordingly.
• All units can see each other’s trigger event. The response will be determined by the Light Level setting and/or
conditions of the space of the detecting sensor.
• The time delay for all units is defined by the unit with the smallest time delay.
Multi-Way Wiring Examples
Black Load
Red
Black
Neutral
Neutral
(optional)
Line
Neutral
(optional)
Ground
Green
Ground
Green
Yellow
Traveler
Yellow
Red
Typical Wiring
(WDT301 up to 4 sensors)
Black Black
Neutral
Neutral
(optional)
Line
Yellow
Red Primary
Load
Brown Secondary
Load
Neutral
(optional)
Ground
Green
Ground
Green
Red
Brown
Blue Blue
Bi-level Wiring
(WDT321 up to 4 sensors)
Note: Button 1 on any sensor controls load #1 and wbutton 2 on any sensor
controls load #2.
Black Black
Neutral
Ground
Neutral
(optional)
Line 1
Line 2
Yellow
Red Primary
Load
Brown Secondary
Load
Neutral
(optional)
Blue Blue
Green
Ground
Green
Red
Brown
Neutral
Two-phase Wiring
SENSOR OPERATING MODES
Sensor #1 Sensor #2 Light Fixture
Auto-ON Auto-ON The load turns ON and OFF automatically based on occupancy detection by
either one of the sensors. The sensors keep the load ON until no motion is
detected and will use the time delay of the sensor with the lowest value. At any
time, the light can be turned ON and OFF using the ON/OFF button of any one
of the sensors. If the load is turned OFF manually by pressing either one of the
ON/OFF buttons, the unit will enter Presentation mode.
Auto-ON* Manual ON* The load can only be turned ON automatically by the sensor set in Auto-ON
mode. The sensors keep the load ON until no motion is detected and will use
the time delay of the sensor with the lowest value. There is either a 30 second
re-trigger delay for the sensor set in Manual-ON mode or instant re-trigger for
the sensor set in Auto-ON mode. After the re-trigger delay elapses, the ON/
OFF button of the sensor set in Manual-ON mode must be pressed to turn the
load back on unless the sensor set in Auto-ON mode detects motion. If the light
is turned OFF manualy by pressing the ON/OFF button set in Auto-ON, it will
enter Presentation mode.
Manual-ON Manual-ON The occupant must press the ON/OFF button on either one of the sensors to
turn the light ON. The sensors keep the load ON until no motion is detected and
will use the time delay of the sensor with the lowest value. There is a 30 second
re-trigger delay, meaning the occupant has 30 seconds to be detected for the
sensor to turn the load back on automatically. After the re-trigger delay elapses,
the ON/OFF button of any one of the sensors must be pressed to turn the load
back ON.
* Although this configuration may be selected, it is not recommended.
WARRANTIES
Lifetime Warranty. The device you have purchased is warranted under normal use
against defects in workmanship and materials for as long as you own the device.
If the device fails due to manufacturing defect during normal use, return the device
for replacement to the store where purchased or send to: Legrand, 50 Boyd Avenue,
Syracuse, NY 13209
All requests for replacement must include a dated sales receipt (legible copies
acceptable).
ALL OTHER WARRANTIES, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE
LIMITED TO A PERIOD OF TWO YEARS FROM THE DATE OF PURCHASE. YOUR
SOLE AND EXCLUSIVE REMEDY AGAINST LEGRAND UNDER ANY WARRANTY
SHALL BE THE EQUIVALENT REPLACEMENT OF THE DEVICE. IN NO EVENT
SHALL ANY WARRANTY APPLY TO ANY DEFECT ARISING OUT OF ANY
ALTERATION OF THE DEVICE, IMPROPER WIRING, IMPROPER INSTALLATION,
MISUSE, ABNORMAL USE OR NEGLIGENCE. IN NO EVENT SHALL LEGRAND BE
LIABLE FOR LOST PROFITS, INDIRECT, SPECIAL, EXEMPLARY, INCIDENTAL OR
CONSEQUENTIAL DAMAGES.
Some states do not allow limitations on how long implied warranties last and do not
allow exclusion or limitation of incidental or consequential damages. Some of the above
limitations or exclusions may not apply to every purchaser.
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 for each relay. If the lights do
NOT turn ON, check wire connections, especially the Load connection. If the lights turn ON, verify that the
correct On Mode is selected in DIP switches 8 and 9.
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 800.223.4185 for technical support.
Lights do not turn ON with motion (LED does not flash)
1. Press and release each button to make sure that the correct lights come ON for each relay. If the lights turn ON,
set PIR and Ultrasonic Sensitivity to High.
2. Check the wire connections, in particular, the Neutral, Line and Ground connections. Verify that connections are
tightly secured.
3. If lights still do not turn ON, call 800.223.4185 for technical support.
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 and 2 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. Verify that there is no significant heat source (e.g., high wattage light
bulb) mounted near the sensor.
3. If the lights still do not turn OFF, call 800.223.4185 for technical support.
Sensing motion outside desired areas
1. Select PIR Sensitivity – Low (DIP switch 5 = ON) if necessary.
2. Mask the PIR sensor’s lens to eliminate unwanted coverage area.
3. Adjust the Ultrasonic Sensitivity. Rotate the trimpot conterclockwise to reduce sensitivity.
Red LED is OFF all the time and the sensor features don’t work.
1. Check the Ultrasonic trimpot. If it is set at fully counter-clockwise (MIN) the unit is in Service Mode. Set the
trimpot to a mid-range position.
2. If resetting the Time Delay switches does not set the sensor features, call 800.223.4185 for technical support.
COVER PLATES
Legrand WDT series wall switches fit behind industry standard decorator-style switch cover plates. Cover plates are
not included.
Units come in the following colors, which are indicated by the final suffix of the catalog number (shown here in
parentheses):
• White (-W)
• Light Almond (-LA)
• Ivory (-I)
• Grey (-GRY)
• Black (-BK)
DELAY
PIR 50%
WALK
TRIGGER
ALERTS
RLY 1 MAN
RLY 2 MAN
ON/OFF Buttons
Relay 1
Relay 2
Button
Hinges
Tabs
Dip Switches
Detection LED
Red = PIR
Green = Ultrasonic
PIR Lens
Ultrasonic Sensitivity
Adjustment Trimpot
Ultrasonic Cones
WDT321 shown.
WDT301 has a single
button and the Ultrasonic
sensitivity adjustment
trimpot is in a slightly
differentposition.
9
=ON =OFF
1 2 3 4 5 6 7 8
Time
Delay
Walk-Through
ON
Relay 1
Relay 2
Audible Alerts
PIR Sensitivity
8
Auto On
Manual On
Relay 1 On Mode
9
Auto On
Manual On
Relay 2 On Mode
4
High
Low, 50%
PIR Sensitivity
7
Disabled
Enabled
Audible Alert
1 2
5 minutes
Test/20 min
15 minutes
30 minutes
Time Delay
5 6
Trigger
Mode
Initial
Occupancy
Maintain
Occupancy
Re-trigger
(seconds
duration)
Option C
Both Both Both (5)
Standard
Either (5)Either
Option A
Either Either (5)PIR
Both
Option B
PIR PIR PIR (5)
3
Disabled
Enabled
Walk-Through
Trigger
Mode
WDT321 ONLY
On Mode
1
2
Factory Settings:
All models
WDT301
WDT321
1
2