YASKAWA Varispeed G7 Series Instruction Manual page 204

Con-
stant
Number
High-slip
braking stop
dwell time
N3-03
HSB Dwell
Time
High-slip
braking OL
time
N3-04
HSB OL
Time
Speed Estimation: N4
User constants for speed estimation are shown in the following table.
Con-
stant
Number
Integral time
of speed
estimator
N4-07
SPD EST I
Time
Proportional
gain of speed
estimator
N4-08
SPD EST P
GAIN
High-speed
proportional
gain of speed
N4-10
estimator
OBS Gain H-
SPD
Speed estima-
tor switching
frequency
N4-11
Speed
Change F
Low-speed
regeneration
stability
N4-15 coefficient 1
LowSpd Rgn
Coef1
Torque
adjustment
gain
N4-17
TRQ adjust
gain
-72
5
Name
Description
Display
Set in seconds the dwell time
for the output frequency for
FMIN (1.5 Hz) during V/f
control.
Effective only during deceler-
ation for high-slip braking.
Set the OL time when the out-
put frequency does not
change for some reason
during deceleration for high-
slip braking.
Name
Description
Display
Set the integral time of the
speed estimator for PI con-
trol.
Set the proportional gain of
the speed estimator for PI
control.
Set the high-speed propor-
tional gain of the speed esti-
mator for PI control.
Set the switching frequency
of high-speed/low-speed
operation for the speed esti-
mator.
Increase this setting if a
higher power for low-speed
regeneration is required. If
the setting is too large, the
torque reference monitor and
the actual torque accuracy
may deteriorate.
Set the torque adjustment
gain for low-speed power.
Control Methods
Change
Setting Factory during
Range Setting Opera-
V/f with
tion
0.0 to
1.0 s No A
10.0
30 to
40 s No A
1200
Control Methods
Change
Setting Factory during
Range Setting Opera-
V/f with
tion
0.060
0.000
ms
to No No
9.999
0.030
ms
0 to
15 No No
1000
0 to
15.0 No No
1000.0
40 to
70 Hz No No
70
0.0 to
0.3 No No
3.0
0.0 to
0.8 No No
5.0
MEMO-
Open Open
BUS
V/f Loop Flux Loop
Regis-
Vec- Vec- Vec-
ter
PG tor tor tor
1 2
A No No No 58AH
A No No No 58BH
MEMO-
Open Open
BUS
V/f Loop Flux Loop
Regis-
Vec- Vec- Vec-
ter
PG tor tor tor
1 2
No No No A 59AH
No No No A 59BH
No No No A 59DH
No No No A 59EH
No No No A 5A2H
No No No A 5A4H
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