Extron Occupancy Sensor OCS 100C User Guide

Product Overview

The Extron OCS 100C is a dual-technology occupancy sensor designed to automate meeting and presentation spaces. It utilizes ultrasonic (US) and infrared (PIR) sensors, along with a photocell, to detect room occupancy and ambient light conditions. The sensor is compatible with Extron control products equipped with Digital I/O ports or via eBUS using optional interface accessories.

Safety and Installation

Installation must be performed by qualified personnel in accordance with local and national building and electrical codes. The device requires 24 VDC for operation. If local 24 V power is unavailable, the included PC 1224 power converter can be used to convert 12 VDC or USB 5 V power. The sensor should be mounted 6 to 8 feet away from HVAC vents and high airflow areas to prevent false detections. For optimal coverage, the sensor should be installed 10 feet above the coverage area.

Configuration and Setup

The OCS 100C features various DIP switches and adjustment dials to customize performance. By default, the sensor is set to require both PIR and US detection to trigger occupancy. Users can adjust sensitivity for infrared, ultrasonic, and photocell sensors manually or utilize the Automatic Mode, where the sensor learns ideal settings over time. A built-in timer allows for adjustable hold times ranging from 8 to 42 minutes. A test mode is available to verify sensor coverage and sensitivity settings during setup.

Operation and Maintenance

The sensor provides visual feedback via green (ultrasonic) and red (infrared) LED status indicators. If the sensor is too sensitive or not sensitive enough, adjustments can be made using the respective dials. Infrared masks are included to block specific areas, such as doorways, to prevent false triggers from hallway traffic. Regular maintenance involves ensuring the sensor remains clear of obstructions and verifying that sensitivity settings remain appropriate for the room environment.

Troubleshooting

If the sensor remains ON, it may be due to constant noise; try reducing sensitivity or removing the noise source. If the sensor remains OFF, increase sensitivity. If the sensor stays on too long, reduce the timer setting. If hallway traffic triggers the sensor, use the provided IR masks or reposition the sensor.