Megmeet MV200 Series - Page 150

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reference switching frequency, its running direction is determined by P02.03 or the forward and reverse
terminals or communication setting.
B: Motor temperature detection
The motor temperature resistance switches into the analog voltage input value by hardware processing
as the detection value of the motor temperature.
C: V/F output voltage offset
When the analog input is the voltage signal, and the analog input terminal function is the output voltage
offset, the corresponding output voltage offset is as shown in Fig.6-36.
Fig.6-36 Output voltage offset
Assuming that the output voltage corresponding to the set frequency in the V/F curve is V
f
, the relation
between the input analog signal and the offset voltage is as follows:
The corresponding offset voltage of the -10V~0V/4mA analog input V
AI
is V
b
= -V
f.
The corresponding offset voltage of the 10V/20mA analog input V
AI
is V
b
= V
f
.
The drive output voltage V
O
=V
f
+V
b.
D: Output voltage
When this function is enabled under V/F mode, the drive output voltage V
O and the output frequency are
mutually independent. The drive output voltage is not restricted by the V/F feature curve of Group P07,
but is determined by the analog input signal, as shown in Fig.6-37.
AI
min
Analog voltage
AI
max
Output voltage Vo
V
max
0V
Fig.6-37 Output voltage curve
The horizontal coordinate in the figure is the adjusted analog input signal, the vertical coordinate is the
drive output voltage value. When the input analog voltage is less than 0, the output voltage is 0.
E: Reserved