FES-LS8-M100 MOTOR manual Version 1.21
April 2020
Page 5 of 12
4. Technical data and limitations of motor
Motor construction is outrunner BLDC brushless synchronous permanent magnet
motor with electronically controlled commutation system 3 phase. Rotor position is
determined by 3 hall sensors and additional 4th hall sensor for automatic propeller
positioning.
This motor can work only in combination with suitable electronic Controller which
transform DC current from Battery packs to 3 phase current which supply motor. We use
controller type which needs hall position sensors in motor, but this motor can work also
with some sensorless controllers.
Electrical motor type
FES-LS8-M100 power ratings at 116V on motor controller and
loaded with FES-LS8-P1-102 propeller:
Maximum torque
75 Nm
Maximum current
200A
Maximum Voltage
116V
Rpm non loaded
45 rpm/V
Rpm non loaded (at 116V DC on Controller)
5300 rpm
Non loaded motor current (at 5300 rpm)
16-18 A
Rpm loaded with
FES-LS8-P1-100 propeller (1m diameter)
4500 rpm
Battery current loaded (4500 rpm, 116V) with
FES-LS8-P1-102
Up to 200 A
Rotor rink diameter
182mm
Motor length
100mm
Motor weight cca.
8,0 kg
Motor efficiency
82-95 %
Maximum allowed temperature
90 °C
Minimum allowed starting temperature
-
20 °C
Power load on motor P (kW) is dependable of propeller diameter, geometry, pitch
and its rotation speed n (RPM-rotation per minute). However, rotation speed of motor is
than dependable on available Voltage on controller. Higher Voltage, higher rpm!
