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Chapter 4 - Parameter Description [FU2]
53
[Reset restart: ‘Yes’]
☞
Note: In case of using ‘Reset Restart’ to ‘Yes’, make sure to
utilize appropriate warning notices to minimize the potential for
injury or equipment damage.
FU2-22: Speed Search Selection (Bit Set)
FU2-23: Current Limit Level During Speed Search
FU2-24: P Gain During Speed Search
FU2-25: 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
to stop.
The speed search gain should be set after
considering the inertia moment (GD
2
) and
magnitude of torque of the load. FU2-37 [Load
Inertia] must be set at the correct value to make
this function operate correctly.
FU2-22 [Speed Search Select]
Setting Range
4
th
bit 3
rd
bit 2
nd
bit 1
st
bit
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 a Fault Reset
restarting (FU2-21) and Auto restarting
(FU2-26)
0 1 0 0
Speed search during Instant Power
Failure restarting.
1 0 0 0
Speed search during Power ON
starting (FU2-20)
When FU2-22 is set to ‘1111’, Speed Search works for all
conditions.
FU2-22 [Speed Search Selection] selects the
speed search function.
FU2-23 [Current Limit Level] is the current that the
inverter limits its current rise during speed
searching. (The set value is the percentage of
FU2-33 [Rated Motor Current])
FU2-24 [P Gain] is the proportional gain used for
speed search. Set this value according to load
inertia set in FU2-37.
FU2-25 [I Gain] is the Integral gain used for speed
search. Set this value according to load inertia set
in FU2-37.
Output Frequency
Time
FX-CM
ON
Time
RST-CM
ON
Time
Start
Tripped
Related Functions: FU2-22 ~ FU2-25 [Speed Search]