Redundancy and Alarm Device for LED Obstruction Lights

Redundancy and Alarm Device for LED Obstruction Lights

The redundancy and alarm device supervises the beacons on your structure. It suits operators who must prove that a mast, chimney or tall building was marked without interruption. When an LED fails, the device raises an alarm signal and, on Type A double beacons, switches the secondary LED on immediately.

Benefits

• Fault reported in time: the alarm output feeds straight into your existing monitoring or SCADA system.
• Automatic changeover: the secondary LED of a Type A double beacon lights without any site visit when the primary circuit fails.
• Flexible supply: the unit runs from 48V DC or 230V AC, matching the installation you already have.
• Simple wiring: the beacon connects through a three-core cable, and the connectors inside the housing are marked for supply, alarm and beacon.
• Serviceable position: the supply section sits in a plastic enclosure at the base of the structure, within easy reach for maintenance.
• Compact unit: 180 x 110 x 70 mm and 0.4 kg, so it fits into a crowded equipment cabinet.

Technical specifications

• Functions: alarm signal on LED failure; switching on the secondary LED of Type A double beacons
• Housing material: PVC
• Housing colour: grey
• Contacts: 2 x NC/NO
• Power supply: 48V DC or 230V AC
• Beacon connection: three-core cable (1: + primary LED; 2: + secondary LED; 3: LED common negative)
• Connectors in the housing: 1 supply 230V AC (or 48V DC); 2 alarm; 3 beacon supply cable
• Electrical insulation class: III
• Ingress protection: IP65
• Operating temperature: -20 to +40 degrees C
• Dimensions: 180 x 110 x 70 mm
• Weight: 0.4 kg

Applications and installation

The device belongs in obstruction lighting installations on masts, antennas, chimneys and tall buildings, above all where Type A double beacons are used. Mount the supply section at the base of the structure, inside a sheltered enclosure. Connect the beacon through the three-core cable and route the alarm output to your supervision system or to a local annunciator. The IP65 grey PVC enclosure keeps dust and water out; place it so ambient temperature stays inside the rated -20 to +40 degrees C band.

Frequently asked questions

How is the beacon wired to the device? Through a three-core cable: primary LED positive, secondary LED positive and the common LED negative.

Can I supply it from the mains? Yes. It connects to 230V AC, and a 48V DC version is also available.

What do I get when an LED fails? An alarm signal on the dedicated connector and, on Type A double beacons, automatic changeover to the secondary LED.