LSIS sv-ip5a User Manual

Chapter 6 - Parameter Description [FU2]
6-27
FU2-22: Speed Search Selection (Bit Set)
FU2-23: P Gain During Speed Search
FU2-24: I Gain During Speed Search
This function is used to permit automatic restarting
after Power ON, Fault Reset, and Instant Power
Failure without waiting for the motor free run to stop.
The speed search gain should be set after considering
the inertia moment (GD
2
) and magnitude of torque of
the load. FU2-46 [Load Inertia] must be set at the
correct value to make this function operate correctly.
FU2-22 [Speed Search Select]
Setting Range (bit)
4
th
3
rd
2
nd
1
st
Description
0 0 0 0 Speed search function does not
work.
0 0 0 1 Speed search during Accelerating
0 0 1 0
Speed search during Restart after
Fault Reset (FU2-21)
0 1 0 0
Speed search during Restart after
Instant Power Failure.
1 0 0 0
Speed search during Power ON
start (FU2-20) is set to “Yes”.
When FU2-22 is set to ‘1111’, Speed Search works for all
conditions.
FU2-23 [P Gain] is the proportional gain used for
speed search. Set this value according to load inertia
set in FU2-46.
FU2-24 [I Gain] is the Integral gain used for speed
search. Set this value according to load inertia set in
FU2-46.
☞ Caution: If I gain is set too high, Overshoot
may occur, leading to OV Trip. In this case,
reduce I Gain value.
[Speed Search Operation]
Input Power
Time
Motor Speed
Time
Output Frequency
Output Voltage
Time
Time
Input Power loss
FU2 ► Speed Search
22 0000
0000 22
Factory Default: 0000 0000
FU2 ► SS P-gain
23 200
200 23
Factory Default: 200 100
FU2 ► SS I-gain
24 500
500 24
Factory Default: 500 200

LSIS sv-ip5a Specifications

General

Brand	LSIS
Model	sv-ip5a
Category	Controller
Language	English