Unitronics UMI-B1 UL Series Operation Manual page 50

UMI-B1 UL Series Inverter
Function
Name
code
Torque
P04.01
boost
Torque
P04.02 boost
close
V/F
P04.03 frequency
point 1
V/F
P04.04 voltage
point 1
Detailed instruction of parameters
Output voltage
V
b
Linear type
Square type
f
b
Torque boost to the output voltage for the
features of low frequency torque. P04.01 is
for the Max. output voltage V
P04.02 defines the percentage of closing
frequency of manual torque to f
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
V
b
V
boost
f
Cut-off
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 f2 f3
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)
Output frequency
.
b
.
b
Output frequency
f
b
Output frequency
f
b
48
Function parameters
Default
Modify
value
○
0.0%
○
20.0%
○
0.00Hz
○
0.0%