Unitronics UMI-B1 UL Series - Page 50

UMI-B1 UL Series Inverter Function parameters
48
Function
code
Name
Detailed instruction of parameters
Default
value
Modify
Output voltage
Output frequency
Linear type
Square type
Torque-stepdown characteristics V/F curve (1.3 order)
Torque-stepdown characteristics V/F curve (1.7 order)
Torque-stepdown characteristics V/F curve (2.0 order)
V
b
f
b
P04.01
Torque
boost
Torque boost to the output voltage for the
features of low 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 inverter
will increase to add the temperature of the
inverter and decrease the efficiency.
When the torque boost is set to 0.0%, the
inverter 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
Output frequency
f
Cut-off
f
b
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%
0.0%
○
P04.02
Torque
boost
close
20.0%
○
P04.03
V/F
frequency
point 1
Output voltage
Output frequency
V1
V2
V3
f1 f2 f3
100% V
b
f
b
0.00Hz
○
P04.04
V/F
voltage
point 1
0.0%
○