Fuel pump control unit FPC

Fuel pump control unit FPC is part of a fuel pump in civil aircraft. The fuel pump is propelled by brushless DC (BLDC) motor in explosion-proof design. FPC controls run-up, rotational speed, and maximum current of the BLDC motor. FPC control unit allows setting, monitoring, and recording of all operational parameters.

FPC unit functions

Control function

FPC unit controls:

• motor start up
• motor rotational speed
• maximum current (current limiting)

Checking function

FPC control unit disconnect the BLDC motor under following events:

• short circuit
• overvoltage
• underspeed
• critical temperature overrun.

FPC control unit limits BLDC motor speed under following events:

• overcurrent
• current consumption drop under minimum value for a specific time period - another step is motor disconnection (if this function is enabled)
• maximum temperature overrun

Monitoring and archiving functions

FPC control unit performs monitoring and recording of several emergency states:

• critical and maximum temperature overrun
• underspeed
• short circuit
• undervoltage
• overvoltage
• current consumption drop below minimum value
• normal motor start and motor start failure
• motor disconnection
• motor not submerged in fuel
• loss of synchronisation

Technical specification

Nominal voltage supply:	28.0V DC
Operational voltage supply:	22V až 30,3V DC
Marginal voltage supply:	18.0V až 32,2V DC
Maximum continuous BLDC motor power consumption:	200W
Weight:	250g

FPC control unit is designed in accordance with aviation standards RTCA/DO-160D, RTCA/DO-178B, RTCA/DO-254, FAA AC 23.1309-1C, and FAR 23. HW criticality according to RTCA/DO-254 and SW criticality according to RTCA/DO-178B are at level C - major.

FPC control unit applications

FPC control unit is intended for control of LUN 6282.XX in-tank booster fuel pump manufactured by Jihostroj, a.s., Velešín, Czech Republic.

This in-tank booster fuel pump is, together with FPC control unit, used in civil transport aircraft Ae270 (manufactured by Ibis Aerospace Ltd.), or in multipurpose twin-engine amphibian aircraft Be-103 (manufactured by Beriev).

Available documents:

FPC datasheet (459.32 kB)