FINEST SCALE LIGHTING TECHNICS. FIREFLY LCU Programmable Light Control Unit Exclusive distribution: Manual Download English Manual at www.Optotronix.
Index of Contents Index of Contents .................................................................................................................................... 2 Preamble ................................................................................................................................................. 3 Technical Data ......................................................................................................................................... 3 Features ....................
Preamble With the FIREFLY LCU you purchased a high‐quality and modern lighting system. We hope you enjoy lighting up your aircraft and ask you to read the following instructions carefully. Technical Data Dimension Height Weight Supply Signal Input Output Output Power Total Output Power Galvanically isolated Stand‐Alone Operation Programmable 40x16mm 5mm 11g 3,1V … 8,4V (supply by signal cable) with puls‐booster 4x Permanent / Flash / Beacon 1,5A permanent / 2,5A flash max.
Anschluss von Spannungsversorgung und Empfänger The FIREFLY LCU is powered directly via the receiver circuit (using the signal cable). The BEC voltage has to be 3,1V to 8,4V. It is also possible to use by 1‐2 cells Lipo2 batteries, 1‐2 cells LiFePO3 batteries, 3‐6 cells NiMh4 batteries, in case the receiver is powered directly by a battery. Don’t connect other battery‐technologies to the FIREFLY LCU.
Connecting Receiver Connect the signal cable for the receiver (twisted pair cable yellow ‐ red ‐ brown, see labeling receiver) to your receiver. To become familiar with the operation of the FIREFLY LCU, you can also connect to a servo tester. If there is no signal (no receiver is connected or invalid signal / defective signalwire) the blue Info LED is flashing. If there is no valid signal for more than 60 minutes, the FIREFLY LCU shuts down and can only be restarted by reconnecting the battery.
Multiple LEDs can be connected in parallel. Consider Max.‐Current! Consider LED polarity Button Resistor in series ‐ + .. .. Receiver Battery 3,1V … 8,4V Only connect LEDs to the FIREFLY LCU, if all Outputs are finally programmed. So it is avoided, that LEDs that are configured for flash operation burn, because they are connected to an Output, which still is programmed for permanent light.
Resistor Table The required resistor for your desired LED Type can be gathered from the following table. The values can be used both for operation directly at a battery and for operation at the FIREFLY LCU. Also pay attention to the required power‐rating of the resistor. For choosing the supply generally consider: The voltage should be as small as possible, because LEDs do not need more than 3,5V (red/ yellow only 2,4V). Everything above that voltage has to be converted into heat in the series‐resistor.
Operating the FIREFLY LCU Startup Sequence When you connect the power supply to the FIREFLY LCU, you will notice the following behavior of the status LEDs: 9x Startup Sequence The LCU is started. Pause One second pause. Battery Test The Battery is tested (see bellow) Pause One second pause. Now, the FIREFLY LCU is ready to operate and can be controlled by your transceiver. The activation points of the outputs can be defined in the programming mode.
Programming Mode Starting the Programming Mode Connect power supply and receiver signal to the FIREFLY LCU. Hold the button permanently pressed before the startup sequence is completed. If the programming mode has been successfully started, all Outputs are flashing very quickly for 3 seconds. Now you enter the Programming Mode. Programming the Battery‐Type At first you have to program the used power supply (Lipo, LiFePO, “others”). Before programming connect the fully loaded battery to the FIREFLY LCU.
The following table shows the functions provided by the FIREFLY LCU: Nr.
Set back to factory settings You can set all parameters of the FIREFLY LCU back to factory settings: Connect the Supply to the FIREFLY LCU. Hold the button permanently before the startup sequence has finished (this takes 2 seconds). Starting the programming mode is confirmed with very fast flashing of all LEDs for 2 seconds, still hold the button permanently! Hold the button till the FIREFLY LCU restarts, now loose the button. The electronic is set back to factory settings.
Warranty and legal information Optotronix issues a 24‐month warranty for the FIREFLY LCU. There is no right to repair, Optotronix reserves the right to share in case of warranty the device against an equivalent product if a repair is not possible.
