LSIS sv-ip5a User Manual

Chapter 6 - Parameter Description [FU2]
6-33
FU2-65: P Gain for Sensorless Control
FU2-66: I Gain for Sensorless Control
SL P-gain is the proportional gain of speed controller.
If this value is set high, you can get fast speed
response characteristic. However, if this value is set
too high, the steady state characteristics may become
unstable. Set the proper value for your application.
SL I-gain is the integral gain of speed controller. If
this value is set low, you can get better transient
response characteristic and steady state characteristic.
However, if this value is set too low, there may be an
overshoot in speed control.
Note: The response time of a system is affected by the
load inertia. For better control performance, set the
FU2-46 [Load Inertia] correctly.
FU2-67: Manual/Auto Boost Selection
FU2-68: Torque Boost in Forward Direction
FU2-69: Torque Boost in Reverse Direction
This function is used to increase the starting torque at
low speed by increasing the output voltage of the
inverter. If the boost value is set too high than
required, it may cause the motor flux to saturate,
causing over-current trip. Increase the boost value
when there is excessive distance between inverter and
motor.
[Manual Torque Boost]
When FU2-67 [Manual/Auto torque boost select] is
set to “Manual”, FU2-68 [Forward torque boost] and
FU2-69 [Reverse torque boost] set values are applied.
FU2-68 [Forward torque boost] is used for Forward
rotation and FU2-69 [Reverse torque boost] is used
for Reverse rotation.
Code LCD display Default Setting range
FU2-67 Torque boost Manual Manual/Auto
FU2-68 Fwd boost 2.0 [%] 0~15 [%]
FU2-69 Rev boost 2.0 [%] 0~15 [%]
Note: The torque boost value is to be set as the percentage
of inverter rated voltage.
Note: When FU1-40 [Volts/Hz Pattern] is set to ‘User
V/F’, FU2-67~69 [Torque boost] is ignored.
Note: Do not set the torque boost too high. Otherwise,
motor may be over-magnetized.
Note: Increase this value when torque shortage happens or
inverter-motor wiring is distant. If this value is set too
high, Overcurrent trip may be triggered.
FU2 ► SL P-gain
65 1000
1000 65
Factory Default: 1000 1000
FU2 ► SL I-gain
66 100
100 66
Factory Default: 100 100
FU2 ► Torque boost
67 Manual
0 67
Factory Default: Manual 0
FU2 ► Fwd boost
68 2.0 %
2.0 68
Factory Default: 2.0 % 2.0
FU2 ► Rev boost
69 2.0 %
2.0 69
Factory Default: 2.0 % 2.0

LSIS sv-ip5a Specifications

General

Brand	LSIS
Model	sv-ip5a
Category	Controller
Language	English