Technical information

6
AC Distribution PCB
The AC Distribution PCB (Figure 1-5) is located on the AC sub panel. The AC
Distribution PCB contains:
• Soft-start circuitry
• Fusing for the soft-start circuit
• Fusing for the AC Sense Circuit and 48 VDC power supply
• Fusing for the optional 24 VDC balance of system power supply
Figure 1-5 AC Distribution PCB
Comm X PCB
The Comm X PCB (Figure 1-6) is located in the Data Monitoring Section in the front
upper right of the inverter. The Comm X PCB includes the RJ45 Ethernet port that is used
to connect the inverter to the internet. The Comm X PCB also includes a Modbus master
port (not enabled), a Modbus slave port and a DVI port that is used to connect the Comm
X PCB to the main Communications PCB. A serial port is available for PV Powered
service use only.
AC Sense & DC Power
Supply Fuses
Power Supply Fuses (optional)
Soft Start Fuses