Axpert MKS-4000/KS-5000 Service manual
11
4. Functional explanations for each PCB
Item
Series name
PCB name
PCB serial number
Quantity
Remark
1
KS4000
Main
71-500264-XXG
1
2
SCC
71-500244-XXG
1
3
COMM
71-500245-XXG
1
4
LED
71-500238-XXG
1
5
CNTL
71-500251-XXG
1
6
MPPT
71-500362-XXG
1
1
KS5000
Main
71-500352-XXG
1
2
SCC
71-500244-XXG
1
3
COMM
71-500245-XXG
1
4
LED
71-500238-XXG
1
5
CNTL
71-500XXX-XXG
1
6
MPPT
71-500362-XXG
1
Note:
“XX” in the serial number is the version of the PCB.
4.1 Main board
The main board consists of SPS, DC-DC converter, inverter. Many semiconductors and easy-failure
components on the board, so it should be play more attention when the system is abnormal.
4.2 Cntl board
The cntl board consists of AD sample, MCU control and communication module. It control the other module work
orderly.
4.3 SCC board
The solar current control (SCC) board based on a PW control mode .When the solar source is presented,
battery charged from solar source; MAX charge current is 50A if solar panel with enough energy.
