Safety Photocell FAAC XP20BD with eye adjustment, BLUEBUS connectivity, model 785120

FAAC XP20BD is a safety photocell pair with an adjustable sensor eye and BLUEBUS connectivity, intended for detecting obstacles in automatic gate and door systems. The unit provides a reliable infrared beam interruption detection and is designed for integration with compatible FAAC control units. Its adjustable emitter/receiver alignment and simplified two-wire BLUEBUS connection make it suitable for residential and light commercial access automation where safety and straightforward installation are required.

Advantages

The XP20BD features an adjustable sensor eye that allows precise alignment between emitter and receiver to maintain consistent detection performance even when mounting positions are not perfectly matched. BLUEBUS connectivity reduces wiring complexity by enabling communication and power over a simplified pair of conductors when used with compatible FAAC control units. The photocell pair uses infrared beam detection for quick response to beam interruptions and is built to meet typical outdoor access control durability requirements.

Suitable for

• Automatic pedestrian and vehicle gates at residential properties
• Sliding and swing gates where obstacle detection is required
• Light commercial entrances and small loading access points
• Installations that benefit from simplified two-wire wiring with compatible control units

When it may not be suitable

This photocell pair is not intended to replace comprehensive industrial safety systems or to serve as the sole safety measure in high-risk industrial environments. It relies on line-of-sight infrared beam detection and therefore requires unobstructed paths between emitter and receiver; heavy fog, dense dust, or persistent debris may reduce detection reliability.

Key specifications

• Type: Active infrared safety photocell pair (emitter and receiver)
• Alignment: Adjustable sensor eye for emitter/receiver alignment
• Connectivity: BLUEBUS-compatible two-wire communication with supported control units
• Intended use: External gate and door obstacle detection for access automation
• Mounting: Surface-mountable housings suitable for outdoor installation

How to use

Mount the emitter and receiver facing each other at an appropriate height and distance to create an unobstructed infrared beam across the opening to be protected. Use the adjustable sensor eye to fine-tune alignment until the receiver indicates a stable beam. Connect the pair to a compatible FAAC control unit using BLUEBUS wiring, following the control unit documentation for power and communication terminals. Perform functional tests after installation to verify beam interruption triggers the intended safety response and adjust alignment if occasional false triggers or missed detections occur.

What to consider before purchase

• Ensure compatibility with your FAAC control unit and BLUEBUS wiring scheme
• Verify required mounting distances and line-of-sight conditions at the installation site
• Confirm environmental exposure and select appropriate mounting locations to minimize dirt, fog, or obstruction

Usage recommendations

Periodically inspect and clean the emitter and receiver lenses and check alignment; perform functional tests after severe weather or physical impacts. For systems where single-beam detection may be insufficient, consider complementary safety measures such as additional photocells, safety edges, or presence-sensing devices to meet applicable safety standards.