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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MONITORING SYSTEM
At this stage, the majority of the PV system is already installed: the PV modules and microinverters. The
following section list steps on how to install the monitoring system. Before installing, review and follow
all important safety instructions listed in the beginning of this manual.
PLC Box Overview
FEATURE
FUNCTION
AC(PLC) Signal Input
Connects to the AC cable in the PV system.
DC Power Input
Plug the Power adapter to the DC Jack on the PLC Box.
(Input: AC 100-240V 50-60Hz, Output: DC+12V 1A)
Power LED
The Power LED will be solid when on
Signal LEDs
The Signal LED will flash three times during normal startup.
Represents the strength of the signal. (1 LED - weak signal, 4 LEDs - strong signal.)
Weak Signal:
Strong Signal
:
Termination Resistor
If the distance between the Data Logger and PLC Box is greater than 50m, then the termination resistor
switch on both the Data Logger and PLC Box should be switched ON. If the distance between the Data
Logger and PLC Box is less than 50m, then the termination resistor switch on both the Data Logger and
PLC Box should be switched OFF.
PLC signal Input
Signal LEDs
DC Power Input
Termination Resistor
Power LED
