ABB PVI-3.0-TL-OUTD-S-US Product Manual page 44

Hardware access to the ON/OFF function is via terminals +R and -R, describe in section 3.
When the function is active,
• Turn OFF the inverter terminals by shorting terminals +R and –R.
• Turn ON the inverter by removing the short between terminals +R and –R.
• With the function enabled, the ON/OFF input status is indicated on the inverter display
UV Prot. T - This section of the menu allows programming of a time interval for which the
inverter stays connected to the grid in a situation where the input voltage has dropped below
the undervoltage limit (set at 70% of Vstart).
The default time is set at 60 sec. The user can set it from 1 to 3600 sec. Example: with the UV
Prot.time set at 60 seconds, if the VIN drops below 70% of Vstart at 9:00, the inverter stays
connected to the grid (taking power from it) until 9:01.
MPPT - This section of the menu allows setting the parameters of the maximum power point
tracking (MPPT) function. This function is useful when there are shaded areas on the PV
array that can create several maximum power points in the work curve.
• MPPT amplitude: the amplitude of the interference introduced in DC is chosen through
the setting of this parameter to establish the optimal working point. There are three
settings to choose from (LOW, MEDIUM, and HIGH). The default setting is MEDIUM.
• Multi-max scan: by setting this parameter, the user can enable/disable the scan, decide
the frequency with which the scan is carried out, and override it manually.
a. Enable/Disable: Enables/Disables the scan for identifying the maximum power
point of the system.
b. Scan Interval: this allows setting the interval
of time between scans. The shorter the interval between scans, the greater will be
the loss of production due to the fact that, during the scan, energy is transferred to
the grid but not at the maximum power point. Each scan takes 2 seconds.
*The curves can be edited using the Aurora Manager LITE software available on the webpag.
Set Vgrid – Selecting this menu opens a sub-menu which allows access for setting the grid
type of the inverter connection.
• Grid types avaialble are: 240V split phase, 277V single phase, or 208V single phase.
• Default grid setting is 240V split phase.
• Use the UP or DOWN key to scroll through list of grid types
• Press ENTER to select a new grid type
• A second display screen will ask for confirmation; press ENTER to confirm, ESC exit
If inverter is connected to grid, unit will restart upon completion of grid change, If unit is not
connected to grid, turn the DC disconnect switch to OFF to save changes.
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4 - Operations