TECHTOP TD20 Series Product Manual page 44

TD20 Series VFD
Function
Name
code
Torque boost
P04.02
close
V/F
P04.03 frequency
point 1
V/F
P04.04
voltage point 1
V/F
P04.05 frequency
point 2
V/F
P04.06
voltage point 2
V/F
P04.07 frequency
point 3
P04.08 V/F
Detailed instruction of parameters
frequency torque. P04.01 is for the Max. output voltage
V .
b
P04.02 defines the percentage of closing frequency of
manual torque to f .
b
Torque boost should be selected according to the load.
The bigger the load is, the bigger the torque is. Too big
torque boost is inappropriate because the motor will run
with over magnetic, and the current of the VFD will
increase to add the temperature of the VFD and
decrease the efficiency.
When the torque boost is set to 0.0%, the VFD is
automatic torque boost.
Torque boost threshold: below this frequency point, the
torque boost is valid, but over this frequency point, the
torque boost is invalid.
Output voltage
V
b
V
boost
The setting range of P04.01: 0.0%: (automatic)
0.1%–10.0%
Setting range of P04.02: 0.0%–50.0%
Output voltage
100% V
b
V3
V2
V1
f1
When P04.00 =1, the user can set V//F curve through
P04.03–P04.08.
V/F is generally set according to the load of the motor.
Note:V1＜V2＜V3, f1＜f2＜f3. Too high low frequency
voltage will heat the motor excessively or damage.
Overcurrent stall or overcurrent protection may occur.
Setting range of P04.03: 0.00Hz–P04.05
Setting range of P04.04, P04.06 and P04.08:
Output frequency
f f
Cut-off b
Output frequency
f2 f3 f
b
-42-
Function Parameters
Default
Modify
value
○
20.0%
○
0.00Hz
○
0.0%
○
0.00Hz
○
0.0%
○
0.00Hz
○
0.0%