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32 Program features
Boost voltage factor
Boost voltage factor enables increasing the pump speed. When the actual DC bus voltage
is greater than the boost voltage, the pump speed increases by a defined boost factor. The
MPPT algorithm achieves this increased speed limit only if the actual DC bus voltage is
appropriate to the boost factor.
Settings
Voltage limits
The solar pump inverter operates within the voltage limits defined for PV cells and beyond
these limits the inverter trips. At maximum voltage limit, the inverter trips to a
fault. Below the minimum DC voltage limit, the inverter stops modulating
.
Settings
Diagnostics
Speed limits
The ACS355 solar pump inverter operates within the defined speed limits set in the group
parameters.
•
Minimum pump speed—Below this value, inverter stops the pump operation. The
inverter restarts automatically only after the
, see page
.
This operation of the inverter prevents the pump from running at a low speed (where
the pump capacity drops and is near zero).
•
Maximum pump speed—The pump operates within this speed limit defined by MPPT
in
, provided that the maximum speed limit of the inverter
in
is equal to or higher than this value.
Note
: Ensure that the pump speed is always defined within the allowed speed limit of the
inverter.
Parameter
Additional information
DC voltage reference to activate boost factor.
Factor at which the inverter functions the best.
Parameter
Additional information
Minimum DC voltage below which the inverter cannot
operate.
Maximum DC voltage.
Fault
Additional information
Fault message to notify that DC bus voltage in the inverter is
higher than the maximum DC voltage (
).
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives Supplement ACS355 Solar pump inverter N827...
Page 4: ......
Page 10: ...10 Safety...
Page 14: ...14 Introduction...
Page 18: ...18 Operating principle and hardware description...
Page 30: ...30 Start up and controls...
Page 36: ...36 Program features...
Page 66: ...66 Actual signals and parameters...
Page 70: ...70 Fault tracing...
Page 76: ...76 Technical data...