SOLAR PUMPING INVERTER I USER MANUAL
29
Surface Mounted Pumps – Set MPPT voltage (use
password 9589)
Normally, this can be left on ‘Automatic MPPT’. In some scenarios with
surface mounted pumps where water surging occurs, the ‘PID Automatic’
option can help. This allows us to set the ‘Maximum Power Point Tracking’
target voltage to match the solar array ‘Voltage at maximum power’ or
‘Vmp’ value. To work out your solar array ‘Vmp’ value:
• Check the rating label sticker on the back sheet of one of the solar
panels in your array.
• Look for the ‘Vmp’ or ‘Voltage max power’ voltage rating, typically
between 30V and 45V.
• Multiply the Vmp rating by the number of solar panels connected in
series, for example:
• Solar panel Vmp rating is 34.5v, with 9 panels connected in series,
• The array Vmp is 34.5 x 9 = 310.5v
• If there are two sets of solar panels, connected in parallel, the array
Vmp stays the same as one set.
To set the solar array Vmp in the pump drive:
• Select ‘PID/Automatic’ and press enter
• Select ‘PID Automatic’ and press enter
• Select ‘Voltage Config’, press enter, then input the Vmp voltage as
worked out using the above method.
Please note that any changes that are made while the pump is running
will not be applied unless the power button located at the base of the
pump drive has been turned o. Once the pump is turned o also turn
o the isolator switch and wait for the screen to lose power. Count out 10
seconds and turn the isolator switch back on and then the pump on/o
button once the unit has loaded the main screen.
Please note the solar isolator switch should only be turned o after using
the on/o button on the pump drive to stop the pump. Switching o the
solar isolator with the pump running may cause damage to the pump
drive inverter circuit. Excessive use of the isolator switch while the pump
motor is running can cause the pump drive to short out as well as other
failures.
The solar isolator and any incoming power from a generator or mains
power MUST be isolated and wait for the pump drive screen to switch o
before accessing any power cables for the solar panels, pump wiring or
AC input wiring.
MPPT Work Mode
PID Automatic
Automatic MPPT
Solar Panel
556
Vmp voltage
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