Mitsubishi Electric Lossnay LGH-50RVS-E Handbook page 9

(2) Power circuit board
Caution:
The power circuit consists of live parts. The power circuit board is not insulated from the power line, except for
the connection part with the control circuit board. Before servicing (including replacing the circuit boards), be
sure to turn off the power supply isolator and check that all the LEDs on the control circuit board and power
circuit board are not lit. A large-capacity electrolytic capacitor on the circuit board may carry voltage for sev-
eral minutes after the isolator is turned off.
CN9
Exhaust fan motor
Pin No. of the connector
[1] Power for the motor: 340 V DC
[4] GND
[5] Power for motor control: 15 V DC
[6] Speed command voltage: 0 to 6 V DC
[7] Rotational speed pulse
CN114, CN119, CN113
Control circuit board
connection
CN12
Damper motor output
220 to 240 V/50 Hz
220 V/60 Hz
Fuse1
10 A/250 V
CN10
Supply fan motor
Pin No. of the connector
[1] Power for the motor: 340 V DC
[3] GND
[4] Power for motor control: 15 V DC
Power supply indicator
[5] Speed command voltage: 0 to 6 V DC
for motor control
[6] Rotational speed pulse
(LED6 Red)
Fed with power: lit
Not fed with power: unlit
TAB1, TAB2
Power supply input
220 to 240 V/50 Hz
220 V/60 Hz
TAB1 is connected to the
power supply via the reactor.
─ 9 ─
Lot number indication
Circuit board name
GND
(Insulated)
Power for the circuit
13 V DC
(Insulated)
Power for the circuit