The SCR series is a Universal Lamp Alarm Relay designed to sense the failure of flashing or steady LED obstruction lamps. The SCR Series energizes when one or more lamps fail. It will monitor the operation of one to eight obstruction lamps. All monitored lamps must be the same wattage and voltage. When connected to a site monitoring system, it provides the remote lamp monitoring protection required by FAA-AC No: 150/5345-43E.
When a lamp fails, the SCR Series senses a decrease in current flow. After a 10 s trip delay, the onboard LED glows and the two alarm outputs energize. The outputs and the LED are reset when the failed lamps are replaced and the unit is recalibrated. The SCR will sense an open flasher, but it will not sense a continuously ON flasher (see FB9L). Removing input voltage de-energizes the output and the LED's; It does not change the calibration.
- Monitors LED Lamps for Failure
- Senses Failed Flashing or Steady Obstruction Lamps
- Switch Selectable Number of Lamps
- 10 A Isolated SPDT Alarm Output Contacts
- 5 A N.O. Line Voltage Alarm Output
- Self Calibrating; No Fine Adjustment required
- Meets FA-AC No: 150/5345- 43E
