Wattstopper Dual Technology Wall Switch Occupancy Sensor (Version 2)
Model Numbers: DW-311 / DW-311-347
Country of Origin: Made in China
Description and Operation
The DW Dual Technology Multi-Way Wall Switch sensors combine advanced passive infrared (PIR) and ultrasonic technologies into one unit. These technologies help eliminate false triggering, even in difficult applications.
- Multi-Way capability is available on all models.
- A "walk-through" mode can turn lights off after only 3 minutes if no activity is detected within 30 seconds of an occupancy detection.
- The DW-311 features a relay with dimming control and two buttons for dimming control.
- DW sensors include 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.
- Upon loss of normal power to the DW-311, the 0-10V dimming control will open. Any light fed by a separate circuit but controlled by the unit's 0-10V signal will go to 100%.
Specifications
Voltages: DW-311: 120/277 VAC, 50/60 Hz; DW-311-347: 347 VAC, 50/60 Hz
Load Limits:
- @120 VAC: 1000-W tungsten, ballast, E-ballast, LED, 1/4 HP
- @277 VAC: 1200-W ballast, E-ballast, LED, 1/4 HP
- @347 VAC: 1500W ballast, LED, 1/4 HP
Time Delay Adjustment: 3 to 30 minutes
Walk-Through Mode: 3 minutes if no activity after 30 sec.
Test Mode: 10 min. with 10-sec. time delay
PIR Adjustment: High or Low
Ultrasonic Adjustment: Minimum to Maximum (trimpot), Off
Alerts: Selectable Audible & Visual
Multi-Way Capability: All models
Terminal screw torque: 16 lbf-in (18 kgf-cm)
High Trim: 6 to 10V
Low Trim: 0 to 4V
Ramp Up: 1 to 10 seconds
Fade Down: 2.5 to 30 seconds
Compliance: Complementary Listed to "Emergency Lighting Equipment", (UL924)
Installation
WARNING: TURN THE POWER OFF AT THE CIRCUIT BREAKER BEFORE WIRING.
- Ensure power is turned OFF at the circuit breaker.
- Connect wires to the DW flying leads as shown in the wiring diagram. The ground wire (green) must be fastened to ground for the sensor to function properly.
- 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. Align with the holes in the wall box and tighten. Do not use excessive force when installing the sensor into the wallbox, as this can bend the mounting strap and affect button operation.
- Turn the circuit breaker ON. Wait one minute, then push the Auto ON/OFF switch. Lights will turn ON. There may be a delay due to initial sensor power-up.
- Test and adjust the sensor as necessary.
- Install an industry standard decorator wall switch cover plate (not included).
WARNING: Grounding the purple and pink wires can damage the unit. Do not apply power to the sensor until all wires are connected or capped off if the driver is to be installed at a future time.
The diagram shows connections for Line, Neutral, Ground, and the 0-10V Dimming leads (Purple, Pink, Yellow, Red). It illustrates how to connect these to the driver or ballast, and the wire colors for each connection.
Multi-Way Wiring
The Multi-Way capability is available on all models. Sensors can be wired together for convenient control of a common load. Only use DW-311 series sensors for Multi-Way wiring. The following principles apply:
- All units must be on the same phase.
- Units can sense each other's push button events and respond accordingly.
- Units can sense each other's PIR trigger events, with responses determined by the Light Level setting and/or space conditions.
- The time delay for all units is defined by the unit with the shortest time delay.
- Units can sense each other's dimming events and respond accordingly.
NOTE: Models with v2 cannot be used with non-v2 models for multi-way applications.
This diagram illustrates the wiring for connecting up to four DW-311 sensors in a multi-way configuration, including connections for Line, Neutral, Ground, and the 0-10V dimming leads to a driver or ballast.
Using the DW-311 with Emergency Lighting
Wattstopper recommends using an ELCU device for emergency lighting scenarios. The DW-311's 0-10VDC dimming circuit connects to and alters the light level of both normally powered and emergency powered lighting loads.
When Normal Power is Available:
If the normal load is turned off by the sensor, the ELCU will also turn off the Emergency Load.
When Normal Power is Unavailable:
If normal power to the room controller fails, the DW-311's 0-10VDC dimming circuit reverts to an open circuit. Any fixture powered by emergency power will go full on. Fixtures powered by normal power will be off.
When no ELCU is Used:
In this scenario, the sensor can only dim emergency lighting, not turn it on or off. If normal power fails, the emergency load will go full on. Emergency circuits fed from a panel must be located electrically where they are supplied by a UPS, generator, or other guaranteed power source.
This diagram shows the connections for normal power, emergency power, and the DW-311 sensor when used with an ELCU, illustrating how the dimming signal affects both normal and emergency lighting loads.
This diagram illustrates the connections for normal and emergency lighting circuits when an ELCU is not used, showing how the DW-311 interacts with these systems.
Coverage Patterns
Coverage testing was performed according to the NEMA WD 7 guideline. For optimal performance, use in spaces no larger than 15' x 12'.
Diagram showing the PIR sensor's two-tiered, multi-cell Fresnel lens with a 180-degree field of view. It indicates major and minor motion detection ranges.
Diagram showing the ultrasonic sensor's coverage pattern, indicating detection ranges.
Masking the lens: Opaque adhesive tape can be used to mask sections of the PIR sensor's view to eliminate coverage in unwanted areas.
Button Functions
- Pressing and holding the UP button ramps lights up to the maximum value (High Trim setting).
- Pressing and holding the DOWN button dims lights down to the minimum value (Low Trim setting).
- Tapping UP when load is OFF sets the load to the last non-zero value.
- Tapping UP when load is ON sets the load to the maximum (high trim) value.
- Tapping UP twice when load is OFF turns the load to its maximum (high trim) value.
- Tapping DOWN when load is ON turns the load OFF.
Adjusting the Sensor and Accessing Other Features
Remove the wall plate and button cap to access DIP switches and adjustment trimpots. Reinstall after adjustments.
Turning the Load ON (ON Mode):
The relay can be programmed for Auto ON or Manual ON. The load can be turned ON or OFF using the up and down buttons.
- Manual ON: DIP switch 1 ON. Occupant must press the Up button to turn ON the load. The sensor keeps the load ON until no motion is detected for the selected time delay. A 30-second re-trigger delay applies.
- Auto ON: DIP switch 1 OFF. The load turns ON and OFF automatically based on occupancy. A 5-second re-trigger delay applies.
Time Delays:
Select time delay using DIP switches 2 and 3. Available delays are 3, 5, 15, and 30 minutes. Setting both switches to OFF enters Test Mode (10-second delay), which cancels after 10 minutes or when DIP switches are changed.
Trigger Mode:
DIP switches 4 and 5 determine the occupancy trigger option (Both, PIR, or Either). Refer to the trigger matrix for details.
Additional Programmable Features:
DIP switches 6 through 9 access additional features like Alerts (Visual/Audible), Walk-Through mode, PIR Sensitivity, High/Low Trim, Ramp Up/Fade Down Time, Light Level Adjustment, Power Loss Mode, Presentation Mode, Service Mode, Preset On Level, and Non-Dim Mode. Refer to the DIP SWITCH SETTINGS section for detailed configuration.
Alerts:
The DW can provide audible and/or visible alerts before the load turns OFF. By default, visible alert is disabled and audio alert is enabled.
Walk-Through:
Shortens the time delay to reduce the ON time after brief occupancy. If enabled, the sensor turns the load OFF 3 minutes after initial occupancy if no motion is detected for the first 30 seconds. Otherwise, the set time delay applies.
PIR Sensitivity Adjustment:
Monitors the environment and adjusts PIR automatically, or allows manual selection of sensitivity (High or Low).
High and Low Trim:
Adjusts maximum and minimum dimming levels. Can be set manually by pressing Up or Down buttons.
Ramp Up and Fade Down Time:
Adjusts the time it takes to ramp up from Low Trim to High Trim, or fade down from High Trim to Low Trim.
Light Level Adjustment:
Sets a light level threshold for Auto ON mode. Standard mode sets a fixed threshold. Smart Light Level mode automatically adjusts the threshold based on occupant behavior.
Power Loss Mode:
Determines how the load behaves after a power loss (Keep Last State, Fail On, Fail Off).
Presentation Mode / Disable Presentation Mode:
Controls whether the sensor re-triggers the load ON after manual turn-off and a period of vacancy.
Service Mode:
Temporarily disables occupancy sensor and light level functions.
Preset On Level:
Sets the dimming level when the load turns ON by occupancy detection (Last non-zero, 50%, 75%, 100%).
Non-Dim Mode:
Changes buttons to simple on/off switches without dimming.
Reset to Factory Default:
Press and hold Up or Down button for 5 seconds. Return DIP switches 6-9 to OFF.
DIP SWITCH SETTINGS
A detailed table outlines the function of each DIP switch (1-9) and the corresponding settings for Mode, Time Delay, Trigger Mode, and Additional Features. It also indicates the green LED blink count for each feature setting.
Troubleshooting
- Lights do not turn ON with motion (LED flashes): Check wire connections, Load connection, and On Mode selection. Verify light level control is enabled.
- Lights do not turn ON with motion (LED does not flash): Check wire connections, Line connection. Verify sensitivity is set to High.
- Lights do not turn OFF: Allow for time delay. Test mode can be used to verify operation. Ensure sensor is mounted at least six feet from HVAC devices and away from heat sources.
- Sensing motion outside desired areas: Mask the PIR sensor's lens or select PIR Sensitivity.
- Red LED is OFF and sensor features are inoperative: Check Service Mode and Time Delay settings.
Cover Plates
WattStopper DW series wall switches fit behind standard decorator-style switch cover plates (not included). Available colors: White (-W), Light Almond (-LA), Gray (-G), Ivory (-I), Black (-B), Red (-R).
Warranty Information
Wattstopper warrants its products to be free of defects in materials and workmanship for five (5) years.
