Gree GUHD18ND3FO - Interface

U-Match Series DC Inverter Service Manual
110
2.3 Interface
 GUHD18ND3FO/GUHD24ND3FO/ GUHD30ND3FO/ GUHD36ND3FO / GUHD42ND3FO
/GUHD48ND3FO Main Control Board
NO.
SILK-SCREEN
INTERFACE
INTERFACE INSTRUCTION
1
AC-L
Live wire input
Live wire input
2
AC-N
Neutral wire input
Neutral wire input
3
PWR 1
Control power output[1- DC bus
voltage, 3- GND]
Power supply interface to the drive
1-pin: DC bus voltage
3-pin: DC bus GND
4
DC_MOTOR2
DC fan motor2
1-pin: Power supply of fan motor
3-pin: Fan GND
4-pin: +15V
5-pin: Signal control
6-pin: NC
Interface of DC fan motor
1-pin: DC bus voltage
2-pin: Suspended
3-pin: DC bus GND
4-pin: +15V
5-pin: Control signal input
6-pin: Not connected
5
DC_MOTOR1
DC fan motor1
1-pin: Power supply of fan motor
3-pin: Fan GND
4-pin: +15V
5-pin: Signal control
6-pin: Signal Feedback
Interface of DC fan motor
1-pin: DC bus voltage
2-pin: Suspended
3-pin: DC bus GND
4-pin: +15V
5-pin: Control signal input
6-pin: DC fan motor feedback
6
CN3
Control power output[1-GND
、
2-18V
、
3-15V]
Power supply interface to the drive
1-pin: GND
2-pin: +18V
3-pin: +15V