7
13. Configure display settings
Before commissioning, it may be necessary to set inverter configurations prior to grid connection by accessing the SETTINGS menu from the display.
ATTENTION –
A
The man adjustable parameters and instructions for accessing the SETTINGS menu are explained below
With only array connected, set DC disconnect switch to ON. GREEN POWER LED will flash and YELLOW ALARM LED will be steady. LCD will read
"Missing Grid". Press ESC to open menus. Use DOWN key to scroll to Settings, and press ENTER. SETTINGS menu requires an access password.
Default password is 0000, pressing ENTER four times loads four zeroes on the display and opens the submenu.
• Area b7 has two visible text lines and the UP and DOWN keys are used to scroll through the menu items.
• Arrow (>) on the left side of the display highlights the current selection.
• Press UP or DOWN keys to move the arrow to the desired selection and press ENTER to open the associated submenu.
• To return to the preceding menu, press the ESC key.
Address
:
the RS485 address may need to be changed or assigned; DEFAULT address is
set at 2 for a single inverter.
• Scroll to
Address
and press ENTER to open submenu. Address values are assigned
manually using any value in the range [2 to 63]. Scroll DOWN to number (2) and press ENTER.
• Press UP and DOWN keys to scroll through numbers and press ENTER to select, ESC
to cancel.
Vstart
: Vstart Parameter may need to be adjusted when short strings are used in PV array.
Change activation voltage only if necessary.
• Scroll DOWN to Vstart and press ENTER; Voltage range can be 250V to 500V ; (Default setting is 360V.)
• If more than one input, select Vstart 1 or 2
• Use DOWN key to move arrow to desired selection and press ENTER.
• Second display screen will open; press ENTER to confirm or ESC to cancel.
14. Commissioning
The inverter commissioning procedure is as follows:
1. Turn the DC disconnect switch in the ON position. If there are two separate external disconnect switches (one for DC and the other for AC), first close
the AC disconnect switch and then the DC disconnect switch.
2. Once powered, icon b11 comes on to indicate that the voltage from the PV array has reached the Vstart threshold.
For input voltages lower than Vstart, icon b11 remains off, “Waiting Sun” is shown in display area b7 and voltage
and current are present (icons b12 and b13).
3. As soon as “Waiting Sun” conditions are met, the inverter shows the AFD board self-test running. The results are shown in display area b7.
If a problem on the AFD board is detected, the self-test will result in an error. Refer to section 16 below.
4. If there are no irregularities, the grid connection sequence starts. Once all the checks are
completed, icon b19 comes on. During these checks, icon b19 is flashing.
5. Icon b14 flashes to indicate the start-up phase; at the same time icon b15 will come on.
6.
Immediately following the grid connection will start. Icon b18 will be displayed in steps until the connection is complete. After the inverter is connected,
the icon b18 will stay “plugged in”.
If there is not sufficient sunlight to connect to the grid, the unit will repeat the procedure until all the parameters controlling connection to the grid (grid
voltage and frequency, confirmation of no ground fault) are within range. During this procedure, the green LED flashes ON and OFF.
15. Arc fault detection
For –A models only, the AFD performs a self-test when the system is started. The inverter display shows the results of the self-test in area b7.
• If the self-test results are OK, the inverter will continue to AC grid connection.
• If a potential problem on the AFD board is detected, the self-test will result in error E053.
Refer to the technical manual online for possible solutions to clear the error.
During normal operation the input current is continually measured and analyzed.
• If a DC arc fault is detected during operation, the inverter is disconnected from AC grid and error E050 will be shown on display.
• Press and hold the ESC key for three seconds to clear the E050 error which will start the self-test.
• If self-test results are OK, the inverter will reconnect to the AC grid; if the DC arc fault is still present, the self-test will result in error E053. Refer to the
technical manual online for solutions. The AFD self-test can be manually started anytime using the following procedure:
1. Turn off the inverter (switching off both DC and AC switches),
2. Turn on both the DC and AC switches and wait for display communication of the self-test result.
Waiting Sun . . . .
Test Arc Sensor
OK
Arc Self Test
E053
Arc Fault
E050
0***
>Address
Display settings
Address
>2
>Vstart1
Vstart2
Language
>Vstart
