Must PV18 MPPT 3 KW, User Manual

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NC C NO
Unit status Condition
Dry contact port:
Power Off Unit is off and no output is powered.
NC&C
NO&C
Close Open
Close Open
Open Close
Close
Open
Open
Close
Close Open
output is powered from Utility
Output is
powered
from Battery
or Solar.
Program 01
set as utility
Power On
Program 01
is set as SBU,
SUB, solar
first
Battery voltage<Low DC warning
voltage
Battery voltage>Setting value in
Program 21 or battery charging
reaches floating stage
Battery voltage<Setting value in
Program 20
Battery voltage>Setting value in
Program 21 or battery charging
reaches floating stage
12
Final Assembly
After connecting all wirings, please put bottom cover back by screwing two screws as shown below.
Communication Connection
Please use supplied communication cable to connect to inverter and PC. Insert bundled CD into a computer and
follow on-screen instruction to install the monitoring software. For the detailed software operation, please check user
manual of software inside of CD.
Dry Contact Signal
There is one dry contact (3A/250VAC) available on the rear panel. It could be used to deliver signal to external device
when battery voltage reaches warning level.
Solar energy provides power to the
loads as first priority.
If battery voltage has been higher than
the setting point in program 21 for 5
minutes, and the solar energy has been
available for 5 minutes too, the inverter
will turn to battery mode, solar and
battery will provide power to the loads
at the same time.
When the battery voltage drops to the
setting point in program 20, the inverter
will turn to bypass mode, utility provides
power to the load only, and the solar will
charge the battery at the same time.
Utility will provide power to the loads
as first priority. Solar and battery energy
will provide power to the loads only
when utility power is not available.
02
AC input voltage range
Appliances (default) If selected, acceptable AC input voltage
range will be within90-280VAC.
UPS If selected, acceptable AC input voltage
range will be within 170-280VAC.
GEN When the user uses the device to
connect the generator, select the
generator mode.
VDE
If selected, acceptable AC input voltage
range will conform to VDE4105
(184VAC-253VAC)
Output voltage 03
Set the output voltage amplitude,
(220VAC-240VAC)
60HZ 50HZ(default)
Output frequency
04
Solar supply priorit
05
(default) Solar energy provides power to charge
battery as first priority.
When the utility is available, if the
battery voltage is lower than the setting
point in program 21, the solar energy
will never supply to the load or feed
into the grid, only charge the battery.
If the battery voltage is higher than the
setting point in program 21, the solar
energy will supply to the load or feed
into the grid or recharge the battery.
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