INVT SPC Series Operation Manual page 31

SPC Series Solar Pump Inverter
Function
code
P04.09 compensation
Name
will run at over-excitation, which may
cause increased output current and
motor overheating, thus decreasing the
efficiency.
When torque boost is set to 0.0%, the
inverter uses automatic torque boost.
Torque boost cut-off threshold: Below this
frequency threshold, torque boost is
valid;
invalidate torque boost.
b
boost
Setting range of P04.01: 0.0%–10.0%
Setting range of P04.02: 0.0%–50.0%
The function code is used to compensate
for the motor rotating speed change
caused by load change in the space
voltage vector mode, and thus improve
the
characteristics of the motor. You need to
calculate the rated slip frequency of the
motor as follows:
V/F slip
△ f=f
b
Of which, f
gain
motor, corresponding to function code
P02.01. n is the rated rotating speed of
the motor, corresponding to function
code P02.02. p is the number of pole
pairs of the motor. 100.0% corresponds
to the rated slip frequency △ f of the
motor.
Setting range: 0.0–200.0%
Description
exceeding this
Output voltage
Cut-off
rigidity of the
-n*p/60
is the rated frequency of the
b
-27-
Function parameter list
Default Modify
threshold will
Output
frequency
mechanical
100.0%
○