5
-78
n4-35
U1-48 Gain
Reduction
Coefficient
Setting this parameter to a
low value can improve
operation when acceleration
during low speeds or
regeneration needs to be
suppress. Be sure to keep this
setting high enough to avoid
causing a CF error.
0.50
to
1.50
1
No
No
No
No
No
A
5BAH
U1-48
Reduce Gain
n4-39
Flux Level at
Low
Frequency
Set this parameter to a small
value if the torque value is
relatively high compared to
the actual load that has been
set. Used during low speed
operation. (The magnitude of
the rated flux level as 100% )
50
to
150%
90%
No
No
No
No
No
A
5BEH
Flux Lvl
@LowFrq
n4-40
Current
Stability
Coefficient at
Low Speed
Reduce this setting if the
motor oscillates when
stopped with torque reference
at zero. Do not adjust this
setting more than is
necessary, verify the results
as changes are made.
0.01
to
1.00
0.5
No
No
No
No
No
A
5BFH
I Stabilize
Gain
n4-43
Speed
Estimation
Compensation
Gain
Adjust this parameter to
improve accuracy of speed
estimation under these
conditions.
1. Drive in torque control
mode.
2. Speed control is set to
d5-07.
3. Set b1-10=0
4. Make the following
adjustment:
Increase the value
when attempting to
estimate the speed of
the motor.
Caution: The motor may have
difficulty stopping
with small friction
loads. (even if the
torque reference is
set to zero).
0.00
to
2.00
0
No
No
No
No
No
A
5C2H
SpdEst Comp
Gain
Parameter
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control Methods
MODBUS
Register
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vector
Open
Loop
Vector
2
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