SMA SC 400HE - Manual (Page 99)

SMA Solar Technology AG 9 Parameters
Operating Manual SC4-63HE-BE-BEN103280 99
9.8 Mpp Tracking
*Only modify parameters after consultation with SMA Solar Technology AG.
Name Description Value / range Explanation Default
value
dVtrack
*
Increments of MPP
settings 1 V … 10 V 5 V
TcheckMpp
*
Time span for MPP setting
increments 5 s … 60 s 10 s
Mpp Factor Start value for MPP
tracking The start value is
obtained by multiplying
the MPP factor parameter
by the open-circuit
voltage. 0.2 … 1 0.80
0.2 … 1 Recommendation for
thin-film PV modules 0.70
TrackCnt Number of the MPP
setting increments
The inverter searches for
the maximum power point
during operation. It
checks the voltage up to
seven times in one
direction, e.g., always
towards the higher
voltage. After the seventh
time at the latest, it also
searches below the last
voltage in order to check
whether the maximum
power point has
decreased. If, for
example, the inverter finds
a lower power point at the
time of the third increase,
it searches below the most
recently checked voltage. 5 … 20 7