Legrand WDT100 - Manual (Page 2)

Fixed Time Delay
(DIP 1 ON & 2 OFF)
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.
You can eliminate coverage in
unwanted areas. Since masking
removes bands of coverage, take
this into account when trouble-
shooting coverage problems.
Ultrasonic Sensor
The sensor has two ultrasonic transceivers operating at 40kHz. Detection
sensitivity can be adjusted using the trimpot under the ON/OFF buttons.
Trigger Mode
The WDT sensor has 4 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 Automatic 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 turned on with the ON/OFF button, the re-trigger time is 30 seconds.
Auto ON
DIP 8 OFF
for Relay 1
DIP 9 OFF
for Relay 2
High (DIP #4 OFF)
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.
Alerts
The WDT can provide audible alerts as a warning before the load turns OFF.
Default setting. Suitable for most applications.
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.
UNIT DESCRIPTION AND OPERATION
The WDT Dual Technology 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. 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 WDT-100 has one relay and one ON/OFF button. The WDT-200 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.
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 WDT-200, light level only affects the load on Relay 2. Users can override this
function by pressing the ON/OFF button. See Light Level Adjustment.
Turning The Load ON
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.
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.
** WDT-100: Switch 9 is not used. WDT-200: Switch 9 default is ON to comply
with CA Energy Commission Title 24 bi-level switching requirements.
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. The sensor
automatically sets the time delay when SmartSet is enabled. In the WDT-200,
both relays use the same delay.
Manual ON
DIP 8 ON
for Relay 1
DIP 9** ON
for Relay 2
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 (see Trigger Mode),
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.
Time delays of 5, 15 (default), or 30 minutes are
available. See DIP SWITCH SETTINGS for information.
SmartSet™ auto
adjust time delay
and Test Mode 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 are OFF. It cancels auto-
matically 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.
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. Low, 50%
(DIP #4 ON)
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 #7 ON)
No warnings provided.
Call 800.223.4185 for Technical Support
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. 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)
20’
(6.1m)
15’
(4.5m)
Major motion
Minor motion
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 below
that is appropriate to the WDT model and electrical supply.
3. Attach the WDT 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 ON/OFF button for
each load and the lights will turn ON.
5. Test and adjust the sensor if necessary.
6. Attach the cover plate.
INSTALLATION
Neutral
Ground
Blue
Line Black
Secondary
Load
Brown
Primary
Load
Red
White
Neutral White
Green
Blue
Ground
Primary
Load
Secondary
Load
Neutral White
Red
Brown
Line 2
Line 1 Black
Neutral White
Neutral White
Green
WDT-200 Bi-Level Wiring WDT-200 Dual Circuit Wiring
WARNING
TURN THE POWER OFF AT THE CIRCUIT BREAKER
BEFORE INSTALLING THE SENSOR OR WORKING ON THE LOAD.
#12 – #14 AWG
Cu Wire Only
Strip Gage
1/2"
12.7mm
Visit our website for FAQs: www.passandseymour.com Shading indicates default operation and switch setting.
Load
Red Line Black
Neutral
Ground
Green
Neutral White
WDT-100 Wiring
4’
(1.2m)
20’
(6.1m)
35’
(10.6m)
0
Top View
Side View
WDT_340892_11934.qxd:340892 11934 WDT_Instruction Sheet 10/12/09 4:08 PM Page 5