Load Tuning Setting Details
The inverter performs an automatic tuning to generate an ideal system
load curve.
Defines the first frequency set point for load tuning (user definable).
AP2-03 Load Fit LCurr
AP2-04 Load Fit LPwr
Displays the current and power measured at the frequency set at AP2-
02 as a percentage (%) value, based on motor rated current and rated
power. Values for AP2-03 and AP2-04 are user definable.
Defines the second frequency set point for load tuning (user definable).
AP2-09 Load Fit HCurr
AP2-10 Load Fit HPwr
Displays the current and power measured at the frequency set at AP2-
08 as a percentage (%) value, based on motor rated current and rated
power. Values for AP2-09 and AP2-10 are user definable.
AP2-11 Load Curve Cur
AP2-12 Load Curve PWR
Monitors the load curve value set at AP2-1 (Load Tune) based on the
current output frequency.
When a load tuning is performed, the inverter measures for 10 seconds the motor current and
power, at the frequencies set at AP2-02 and AP2-09. The motor current and power values
measured here are used to generate an ideal load curve.
Note
Load tuning is not available while the inverter is operating.
•
If the frequencies for AP2-02 (Low Freq) and AP2-08 (High Freq) are set too close to each
other, the resulting load curve may not reflect the actual (ideal) load curve. Therefore, it is
recommended that you keep the AP2-02 and AP2-08 frequencies as close to the factory
defaults as possible.
•
If a secondary motor is in use, note that the existing load curve for the main motor will be
applied to the secondary motor unless a load tuning has been performed for the secondary
motor.
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