Power Circuit Board; Exhaust Fan Motor (Cn9); Supply Fan Motor (Cn10) - Mitsubishi Electric LGH-F300RVX-E Handbook

(2) Power circuit board

Caution:
The power circuit board is not insulated from the power line (high voltage part), except for the connection part
(CN118, CN119, and CN121) with the control circuit board. Also, even when the power supply is cut off, the
capacitor is charged. Therefore, wait for at least five minutes before starting work.

Exhaust fan motor (CN9)

Pin No. of the connector
[1] Power for the motor: 260 to 330 V DC
[2] Not used
[3] Not used
[4] GND
[5] Power for motor control: 14 to 16 V DC
[6] Speed command voltage: 0 to 6 V DC
[7] Rotational speed pulse
GND
(Not insulated)
Control circuit
board
Only for LGH-F1200RVX-E
Control circuit
board*
12 to 14 V DC
(Insulated)*
GND
(Insulated)*
Damper motor output
208 to 230 V/60 Hz
Note:
The components marked with * are not placed on the power circuit board (upper) of LGH-F1200RVX-E.
Power supply indicator
for motor control
(LED6 Red)
14 to 16 V DC
(Not insulated)
Power supply input
208 to 230 V/60 Hz

Supply fan motor (CN10)

Pin No. of the connector
[1] Power for the motor: 260 to 330 V DC
[2] Not used
[3] GND
[4] Power for motor control: 14 to 16 V DC
[5] Speed command voltage: 0 to 6 V DC
[6] Rotational speed pulse
Fed with power: lit
Not fed with power: unlit
Fuse
Lot number
10 A/250 V indication
─ 11 ─
Reactor
Fuse
5 A/250 V