YASKAWA Varispeed G7 Instruction Manual page 184

Name
Con-
stant
Display
Number
High-slip Set in seconds the dwell time
braking stop for the output frequency for
dwell time FMIN (1.5 Hz) during V/f
N3-03
control.
HSB Dwell
Effective only during deceler-
Time
ation for high-slip braking.
High-slip
Set the OL time when the out-
braking OL
put frequency does not
time
N3-04 change for some reason dur-
ing deceleration for high-slip
HSB OL
braking.
Time
Speed Estimation: N4
User constants for speed estimation are shown in the following table.
Name
Con-
stant
Display
Number
Integral time
of speed esti-
Set the integral time of the
mator
N4-07 speed estimator for PI con-
trol.
SPD EST I
Time
Proportional
gain of speed
Set the proportional gain of
estimator
N4-08 the speed estimator for PI
control.
SPD EST P
GAIN
High-speed
proportional
Set the high-speed propor-
gain of speed
N4-10 tional gain of the speed esti-
estimator
mator for PI control.
OBS Gain H-
SPD
Speed estima-
Set the switching frequency
tor switching
of high-speed/low-speed
frequency
N4-11
operation for the speed esti-
Speed
mator.
Change F
Low-speed Increase this setting if a
regeneration higher power for low-speed
stability coef- regeneration is required. If
N4-15 ficient 1 the setting is too large, the
torque reference monitor and
LowSpd Rgn
the actual torque accuracy
Coef1
may deteriorate.
Torque
adjustment
Set the torque adjustment
gain
N4-17
gain for low-speed power.
TRQ adjust
gain
Setting Factory
Description
Range Setting
0.0 to
10.0
30 to
1200
Setting Factory
Description
Range Setting
0.060
0.000
to
9.999
0.030
0 to
1000
0 to
1000.0
40 to
70 Hz
70
0.0 to
3.0
0.0 to
5.0
Control Methods
Change
Open
during
V/f Loop
Opera-
V/f with Vec-
tion
PG tor
1
1.0 s No A A No
40 s No A A No
Control Methods
Change
Open
during
V/f Loop
Opera-
V/f with Vec-
tion
PG tor
1
ms
No No No No
ms
15 No No No No
15.0 No No No No
No No No No
0.3 No No No No
0.8 No No No No
User Constant Tables
MEMO-
Open
BUS
Flux Loop
Page
Regis-
Vec- Vec-
ter
tor tor
2
No No 58AH -
No No 58BH -
MEMO-
Open
BUS
Flux Loop
Page
Regis-
Vec- Vec-
ter
tor tor
2
No A 59AH 4-20
No A 59BH -
No A 59DH 4-20
7-34
No A 59EH
10-4
No A 5A2H 7-34
No A 5A4H 7-34
5-
71