Led Indication - UAV Factory GPU User Manual

9. LED Indication

Four indication LEDs are located on the front side of the GPU, see Figure 11 for reference. The main purpose of LEDs is to
facilitate set-up procedure, simplify pre-flight checks as well as to provide clear identification of the battery status
before the flight. The following LED operation is implemented in the GPU:
6 V – green LED indicates 6 V voltage presence.
12 V – green LED indicates 12 V voltage presence.
BAT – green LED indicates that battery is supplying the system. When LED is off the generator or external power is
supplying the system.
CHRG – red LED indicates battery charging. When LED is flashing the battery voltage is low and the generator provides
not enough power.
10. Tachometer
Tachometer input allows to monitor engine or generator rotation speed using engine ignition system hall sensor. This
reading can be sent through TTL port to autopilot and transmitted to the UAV ground station via the rf-link.
Connect signal output to RPM sensor input and ground pin to common ground of the power unit - see Figure 13 and
Figure 14 for details.
UAV Factory USA LLC.
50 South Buckhout Street,
Irvington, NY 10533 USA
Phone: +1 (914) 591 3070
Fax: +1 (914) 591 3715
Email: josephm@uavfactory.com
Red mark
Generator
GND
Battery +
Figure 14 Connector J2 description (for brushed generator)
Brushed generator +
RPM sensor
External power +
GND
UAV Factory LTD. EUROPE
24A-52 Ganibu Dambis,
LV1005, Latvia
Phone: +371 29119398
Fax: +371 63048747
Email: sales@uavfactory.com
13