I N S T A L L A T I O N M A N U A L
C L O U D - B A S E D M O N I T O R I N G S Y S T E M
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Power LED
Signal LED(x4)
RS485
DC Power Input
Termination Resistor
TROUBLESHOOTING
Troubleshooting the PLC Box
If the monitoring system is not operating correctly, use the steps below to troubleshoot the problem. If
the issue cannot be resolved using these steps, please contact inverter maker’s technical services.
If the Power LED status shows no light:
•
Verify the Power Adaptor is securely connected to the PLC Box
•
Verify the AC source connected to Power Adaptor is turned on
If the RS485 LED status shows no light:
•
Check the RS485/CAT5 connection between the PLC Box and Data Logger
•
Verify the Data Logger has power
•
If the Signal Strength LEDs status shows no lights or only one solid green LED:
•
Check the connections and cable distances between the PLC Box and micro inverters
•
Place the PLC Box as close to the micro inverters as possible. Maximum cable distance is 164ft (50m)
If the Signal Strength LEDs status shows 3 or 4 solid green lights, but there is no communication:
•
Turn the PLC Box termination resistor on
LED STATUS
DESCRIPTION
Power LED
●
No Light
No Input Power
●
Solid Green
Operating
Signal LED
●●●●
No Light
No Signal from Microinverters
●
●●●
One Solid Green
Weak Signal from Microinverters
●●●●
Four Solid Green
Strong Signal from Microinverters
