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Parameter
Number
U1-48 Gain
Reduction
Coefficient
n4-35
U1-48
Reduce Gain
Flux Level at
Low
Frequency
n4-39
Flux Lvl
@LowFrq
Current
Stability
Coefficient at
n4-40
Low Speed
I Stabilize
Gain
Speed
Estimation
Compensation
Gain
n4-43
SpdEst Comp
Gain
-78
5
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Name
Description
Display
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.
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% )
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.
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).
Control Methods
Change
Setting
Factory
V/f
during
Range
Setting
V/f
with
Operation
PG
0.50
to
1
No
No
No
1.50
50
to
90%
No
No
No
150%
0.01
to
0.5
No
No
No
1.00
0.00
to
0
No
No
No
2.00
Open
Open
MODBUS
Loop
Flux
Loop
Register
Vector
Vector
Vector
1
2
No
No
A
5BAH
No
No
A
5BEH
No
No
A
5BFH
No
No
A
5C2H
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Troubleshooting
