Wattstopper CX-100-1 24V Ceiling/Wall Occupancy Sensor User Manual

1. Product Overview

The Wattstopper CX-100-1 is a 24V ceiling/wall occupancy sensor designed for efficient lighting control in various indoor environments. It utilizes Passive Infrared (PIR) technology to detect human motion and automatically manage lighting, contributing to energy savings. This sensor is suitable for large areas, offering coverage up to 2000 square feet, making it ideal for offices, classrooms, warehouses, and similar spaces.

The CX-100-1 integrates with Wattstopper power packs and can also be used with HVAC or other control systems. Its versatile mounting options and adjustable settings allow for precise control over lighting based on occupancy and ambient light levels.

Figure 1: Wattstopper CX-100-1 Occupancy Sensor. This image shows the compact design of the sensor, typically mounted on a ceiling or wall.

2. Setup and Installation

Proper installation of the CX-100-1 sensor is crucial for optimal performance. This sensor operates on a 24VDC power supply and is designed for ceiling or wall mounting.

2.1 Mounting Considerations

• Location: Choose a mounting location that provides an unobstructed view of the area to be covered. The sensor can be ceiling-mounted or corner-mounted on a wall for increased versatility.
• Coverage: The sensor can cover up to 2000 square feet of walking motion. Select the appropriate lens pattern for your specific application to ensure reliable coverage and desired cutoff.
• Avoid Obstructions: Ensure there are no large objects, partitions, or HVAC vents that could block the sensor's field of view or cause false triggers due to air currents.

2.2 Wiring

The CX-100-1 sensor requires a 24VDC connection. It is designed to control lighting systems through Wattstopper power packs. It also features an isolated relay for integration with HVAC or other control systems. Refer to the detailed wiring diagrams provided with your power pack or control system for specific connection instructions.

Figure 2: Front view of the Wattstopper CX-100-1 product packaging. The label indicates the model number, type of sensor, and voltage requirements.

Figure 3: Side view of the Wattstopper CX-100-1 product packaging. This view often contains additional product details or certifications.

3. Operation

The CX-100-1 sensor automatically controls lighting based on occupancy detection. It uses Passive Infrared (PIR) technology to sense the presence of people in its coverage area.

3.1 Automatic Lighting Control

• Occupancy Detection: The sensor detects a difference in infrared energy from a moving human body against the background space. When occupancy is detected, connected lights are turned on.
• Automatic Shut-off: After the area is vacated and no motion is detected for a set period, the time delay elapses, and the lighting automatically turns off.

3.2 Adjustable Settings

• Time Delay: The time delay is user-adjustable, ranging from 15 seconds to 30 minutes. This setting determines how long the lights remain on after the last detected motion.
• Sensitivity: The sensor's sensitivity can be adjusted to optimize detection for the specific environment, preventing false triggers or missed detections.
• Light Level Sensor: A built-in light level sensor allows for daylight harvesting, ensuring lights only turn on when ambient light is insufficient, even if occupancy is detected.

3.3 Advanced Features

• ASIC Technology: Utilizes Application-Specific Integrated Circuit (ASIC) technology for enhanced reliability and reduced component count.
• Pulse Count Processing: This feature helps eliminate false "offs" without compromising sensitivity by analyzing motion patterns.
• Detection Signature Analysis: Prevents false triggers by distinguishing between human motion and other environmental factors.
• RFI/EMI Immunity: Designed with immunity to Radio Frequency Interference (RFI) and Electromagnetic Interference (EMI) for stable operation.

4. Maintenance

The Wattstopper CX-100-1 occupancy sensor is designed for long-term, maintenance-free operation. However, occasional cleaning and inspection can help ensure continued optimal performance.

• Cleaning: Periodically wipe the sensor lens with a soft, dry cloth to remove dust or debris that might obstruct its field of view. Do not use abrasive cleaners or solvents.
• Inspection: Ensure the sensor remains securely mounted and that no new obstructions have appeared in its coverage area.
• No User-Serviceable Parts: The sensor contains no user-serviceable parts. Do not attempt to open or repair the unit.

5. Troubleshooting

If you experience issues with your CX-100-1 occupancy sensor, refer to the following common troubleshooting steps:

• Lights do not turn on with occupancy:
  • Check power supply to the sensor and associated power pack.
  • Verify wiring connections are secure and correct.
  • Increase sensor sensitivity.
  • Ensure the sensor's field of view is not obstructed.
  • Check the light level sensor setting; if ambient light is high, lights may not turn on.
• Lights turn off too quickly or unexpectedly:
  • Increase the time delay setting.
  • Increase sensor sensitivity.
  • Ensure the sensor's coverage area is adequate and not obstructed.
  • Verify that there are no sources of RFI/EMI causing interference.
• Lights turn on without occupancy (false triggers):
  • Decrease sensor sensitivity.
  • Check for heat sources (e.g., HVAC vents, direct sunlight) within the sensor's field of view that might cause false detections.
  • Ensure the sensor is securely mounted and not subject to vibrations.

If these steps do not resolve the issue, contact customer support or a qualified electrician.

6. Specifications

7. Warranty and Support

7.1 Warranty Information

Specific warranty details for the Wattstopper CX-100-1 sensor are typically provided with the product packaging or can be obtained directly from the manufacturer, Watt Stopper. Please retain your proof of purchase for warranty claims.

7.2 Customer Support

For technical assistance, installation questions, or troubleshooting beyond the scope of this manual, please contact Watt Stopper customer support or your product reseller. Contact information can usually be found on the manufacturer's official website or product documentation.