Flashers and Tower Lighting Controls Tower and Obstruction Lighting Controls FB SERIES Flasher & Incandescent Beacon Alarm Relay Description The FB Series is used to monitor the operation of one two- lamp incandescent beacon and one beacon flasher (or auxiliary module). The flasher and lamps are monitored by sensing the ofl w of current in the circuit. If the lamp(s) or the flasher fail to operate properly, a solid-state output and an isolated SPDT relay energize. When connected to a site monitoring system, this unit provides the remote beacon monitoring protection required by the FAA/FCC. On a multiple beacon structure, one unit is required for each two-lamp incandescent beacon (one unit per beacon for LED beacons). Operation If one lamp in an incandescent beacon fails, the relay and solid- state lamp failure outputs energize after 10s. If the flasher fails in the ON or OFF condition, the relay and the solid-state flasher failure output energizes after 6s. If both failures occur, all three outputs energize after their trip delays. Note: If both incandescent lamps fail, all three outputs will energize. The relay and solid-state flasher failure output Wiring Diagram energizes after 6s, and the solid-state lamp failure output L1 N/L2 energizes after 10s. Features & Benefits FEATURES BENEFITS Reliable low cost monitoring of the flasher and Toroidal current sensing lamps through built-in CT and provides isolation from the monitored circuit Failsafe beacon Alarm monitors for failed incandescent lamps in monitoring addition to flasher function One isolated, 5A, SPDT When connected to a site monitoring system, it alarm output plus two, provides the remote beacon monitoring protection 1A, solid-state line required by the FAA / FCC. voltage alarm outputs Fixed trip delays for asher (6s) and lampfl Prevents nuisance alarms (10s) failures V = Voltage B = Beacon F = Flasher T = Toroid BRC = Flasher Bypass Relay Contacts Ordering Information AR = FB Alarm Relay BR = Bypass Relay Coil MODEL LINE VOTAGE LAMP TYPE FL = Flasher Failure LED LL = Lamp Failure LED FB120A 120VAC Incandescent Beacon AXL = Lamp Alarm Relay Coil FB230A 230VAC Incandescent Beacon NOTE: Flasher module may be located on either the line or load side of the toroidal sensor. If you dont find the part you need, call us for a custom product 800-843-8848 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062316 www.littelfuse.com/fbFlashers and Tower Lighting Controls Tower and Obstruction Lighting Controls FB SERIES LEDs Specifications Lamp Failure (Red) Glows when one or both lamps fail Input Voltage Flasher Failure (Red) Glows when the flasher fails FB120A 120VAC 15% Protection FB230A 230VAC 15% Circuitry Encapsulated AC Line Frequency 50/60Hz Mounting Surface mount with two 6 (M3.5 x 0.6) screws Lamp Socket Voltage 10% 50/60Hz Dimensions H 88.9 mm (3.5) W 63.5 mm (2.5) Alarm Outputs D 44.5 mm (1.75) Type 3 total - 1 relay, 2 solid state 2 Termination 7 position barrier block for 20 AWG (0.5 mm ) One isolated SPDT relay rated 5A resistive 2 to 14 AWG (2.5 mm ) wire Two solid-state line voltage outputs rated Environmental 0.5A steady, 5A inrush Operating/Storage Lamp Failure Detection Temperature -55 to 60C / -55 to 85C FB120A For two 620W or 700W lamps Weight 7 oz (198 g) FB230A For two 500W or 700W lamps Trip Delays Flasher Failure Fixed at 6s -0/+40% Lamp Failure Fixed at 10s -0/+40% 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062316 www.littelfuse.com/fb