Mitsubishi Electric Mr.Slim PLA-RP100AA2 Service Manual page 24

Role of each component when motor is driven.
Indoor/outdoor connecting line
220-240V AC
Fan drive speed instruction
Serial signal
5V DC 300bps
PWM output
3 phase AC (voltage and
CN4
frequency are changeable.)
Indoor power
board. (fan-
control circuit)
CN3
CN2
Rotational speed detection
signal (hall element)
5V DC pulse
Fan rotational speed data
Abnormal signal
Serial signal
5V DC 300bps
Indoor controller
board.
24
Fan motor
DC brushless
Position
sensor circuit