LEGRAND Pass & Seymour WSP251 User manual

Installation Instructions
No: 341100 – 10/14
Catalog Number: WSP251
Country of Origin: Made in China
Pass & Seymour®
Passive Infrared Wall Switch Occupancy Sensor
UNIT DESCRIPTION AND OPERATION
The WSP251 PIR Wall Switch Occupancy Sensors turn lighting or fan loads ON and
OFF based on occupancy and ambient light level. They are designed to replace a
standard light switch. The WSP251 operates with 120 or 277VAC line voltage.
The sensor uses passive infrared technology to sense human motion, and defines
it as occupancy. A red LED on the sensor blinks upon occupancy and then resets.
It will blink again when it detects motion after the 2‑second reset.
The sensor turns ON the load automatically when it detects occupancy. Once the
space is vacant and the time delay elapses, it turns OFF the load automatically.
If adequate ambient light is already present in the area, the sensor will hold OFF the
load it controls. When the light drops below a field selectable level and the sensor
detects occupancy, the sensor turns ON the load. Once turned ON, the load remains
ON until the space is vacant or the light level rises above the setpoint and the time
delay expires.
Manual Operation: The occupant can
press the ON/OFF button to turn the load
ON and OFF. When the load is turned
ON manually, the sensor will keep the
load ON until no motion is detected for
the length of the time delay. If the load
is turned OFF manually, the sensor
holds the load OFF until no motion
has been detected for the duration of
5 minutes. The next time the sensor
detects occupancy and the ambient light
is lower than the set level, the sensor
automatically turns ON the load.
Walk‑test feature:
When the Time Delay trimpot is in
the fully counterclockwise position, the
sensor has a 30 second time delay.
This allows you to quickly check the
sensor coverage area.
Service function:
In the event of unit failure or if it is necessary to leave the load ON, remove the Service
Jumper plug. This disables all automatic ON and OFF functions and the load can only
be operated using the ON/OFF button.
COVERAGE PATTERNS
The WSP detects motion in areas up
to 900 sq. ft. and up to 35 feet from the
sensor. Ideally, the sensor is designed
for small amounts of motion in spaces
up to 300 sq. ft. The Fresnel lens on the
sensor is a multiple segment viewing
lens with a field of view of 180°.
The sensor must have a clear view
of the people in the space in order to
detect occupancy. Obstructions, such as
furniture blocking the sensor’s lens, may
prevent occupancy detection.
Top View
Side View
MASKING THE LENS
Opaque adhesive tape is supplied so that sections of the
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.
INSTALLATION
CAUTION
Turn the power OFF at the circuit breaker
before installing the sensor.
1. Connect the existing wires in the wall box to the sensor flying leads. (See Wiring
Directions).
• Do not allow bare wire to show below connector.
• The ground wire must be tightly grounded for the unit to operate properly.
2. Attach the sensor to the wall by mounting it in the wall box with the two mounting
screws provided.
3. Turn ON power at the circuit breaker.
4. Test the sensor using the procedure in the Sensor Adjustments section.
There is an initial warm‑up period after installation. It may take up to a minute
before the load turns ON due to a sensor warm‑up period during initial power‑up
(this occurs during installation only). The load turns ON after the warm‑up period
ends if the sensor detects motion.
Rapid successive pressing of the ON/OFF button causes a delay in function.
A single press of the button causes an immediate response. If the button is pressed
again within 2 seconds, the switch ignores it if there is not enough power. Wait at
least two seconds between button presses.
5. 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 or 277VAC, 50/60Hz
Load Requirements
@ 120VAC...........0~1000W ballast, E‑ballast, LED, tungsten, 1/4 hp
@ 277VAC ...................... 0~1200W ballast, E‑ ballast & LED, 1/4 hp
Common Features
Time Delay Adjustment ....................................30 seconds ‑ 30 minutes
Sensitivity Adjustment ..............................................Minimum‑Maximum
Light Level Adjustment...............................................0‑200fc (@4000K)
Operating Temperature ..................................................... 40°C (104°F)
Storage Temperature ......................................................... 70°C (158°F)
Terminal screw torque............................................. 16 lbf‑in (18 kgf‑cm)
Optional Neutral Connection
15'
(4.6m)
35'
(10.7m)
4.0'
(1.2m)
35'
(10.7m)
floor
Opaque tape
Optional neutral
terminals behind
breakaway tab
Breakaway
tab
6" flying leads
for line, load and
ground connections
Maximum = clockwise
Minimum = counterclockwise
ON/OFF
Switch
Service
Jumper
Light Level
Time Delay
Sensitivity
LED
Fresnel Lens
ON/OFF Button
(Switch Cover)
Press down
on tab and
pry off Cover
(L)
(T)
(S)
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
341100 – 10/14
© Copyright 2014 Legrand All Rights Reserved.
For covering patents, see www.legrand.us/patents
WIRING DIRECTIONS
For normal installation, connect:
1. LOAD to Red flying lead.
2. LINE to Black flying lead.
3. GROUND to Green.
Manual bi‑level lighting wiring
SENSOR ADJUSTMENT
DO NOT OVERTURN TRIMPOTS WHEN ADJUSTING THE SENSOR!
1. To test unit operation, press the ON/OFF button to turn the load ON.
2. Remove the button cover to access the adjustment controls. Use a small, flat blade
screwdriver to press down the locking tab at the top of the button, then gently pry
it off.
a) Set the time delay to the “walk test” position (fully counterclockwise).
b) Leave the room. The load should go OFF after 30 seconds.
3. To test sensitivity:
a) Make no motion for 3 seconds.
b) Wave your hand sideways in front of the sensor at a distance of approximately
12". The LED blinks when movement is detected. Typically, the sensitivity should
be at maximum (fully clockwise).
4. If desired, set the light level using the steps below. The light level values referenced
are approximate and reference 4000K CCT. Variations in color temperature may
affect the actual levels the sensor sees. It is recommended that light level hold off
be set up in the morning for best results. [If this feature is not needed, leave the
light level at maximum (fully clockwise)].
a) Set the Time Delay to the “walk test” position (fully counterclockwise).
b) the Light level to 50% (12 o’clock position) which is approximately 100fc. Let the
sensor time out so lights are OFF. Enter the space and lights should remain OFF.
c) Make sure your body does not cast a shadow on the sensor, and adjust the light
level trimpot clockwise in small increments.
d) After each adjustment, wait 5‑10 seconds to see if the lights turn ON. Repeat
until the lights turn ON. At this setting the load connected to the sensor will not
turn ON if light levels are above the current illumination. If you are unable to
find the ON position, your space may be below 100fc. In this case, start your
set point below 50%. Typically, most applications would require 100 or more
foot candles.
Note: Users can override this function by placing their hand in front of the sensor to
block incoming light. The load will then remain ON until the space is unoccupied or
the light level rises above the setpoint and the time delay expires.
5. Reset the time delay to the desired setting. The time delay can be set from
30 seconds to 30 minutes in 5‑minute increments.
TROUBLESHOOTING
Load will not turn ON:
• LED does not flash:
‑ Check the sensitivity for proper configuration.
‑ Check all wire connections. Verify the ground wire
is tightly secured.
• LED does flash:
‑ Press the ON/OFF button. If load does not turn
ON, check all wire connections and verify the load
wire is tightly secured.
‑ Check the light level trimpot.
‑ If light level feature is desired, follow the steps from
the Sensor Adjustment.
‑ If light level feature is not desired, turn trimpot fully
clockwise to disable.
• If load still does not turn ON, call 800.223.4185 for technical support.
Load will not turn OFF:
• The time delay can be set for 30 seconds (Walk Test), 5, 10, 15, 20, 25, or 30
minutes. Ensure that the time delay is set to the desired delay and that there is
no movement within the sensor’s view for that time period.
• To quickly test the unit for proper operation, turn the time delay to minimum (fully
counterclockwise) and move out of the sensor’s view. Load should turn OFF after 30
seconds.
• If load still does not turn OFF, call 800.223.4185 for technical support.
Sensing motion outside desired area:
• Opaque adhesive tape is included with the sensor and can be used to limit the
detection areas. See Masking the Lens.
• Adjust sensitivity counterclockwise to reduce excessive sensitivity.
COVER PLATES
Legrand WSP wall switches fit behind industry standard decorator style switch
cover plates.
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.
Time Delay (T)
Shown as set for
15 minutes
30 seconds
(Walk-test)
5 minutes
10 minutes 20 minutes
25 minutes
30 minutes
LTS
Load
Load
Green
Red Black
Neutral
Optional
Neutral
to Line
Sensitivity (S)
shown as set
for Maximum
Light Level (L)
shown as set
for Maximum (+)
to disable
Time Delay (T)
Shown as set for
15 minutes
Load
Red Black
Green
Neutral
Optional
Neutral
to Line
Single‑level wiring