B.3 Parameter Table
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual 351
n3: Overexcitation Deceleration
Use n3 parameters to configure the Overexcitation Deceleration braking function.
n3-13
<15>
Overexcitation Deceleration
Gain
Applies a gain to the V/f pattern during deceleration (L3-04
= 4). Returns to normal values after ramp to stop or at re-
acceleration.
To increase the braking power of overexcitation, increase
the gain by 1.25 to 1.30.
1.00 to
1.40
1.10 A A − 531 207
n3-21
Overslip Suppression
Current Level
If overcurrent or overload occur during overexcitation
deceleration, reduce the overslip suppression current level.
Set as a percentage of the drive rated current.
0 to 150 100% A A − 579 208
n3-23
Overexcitation Operation
Selection
0: Enabled in both directions
1: Enabled only when rotating forward
2: Enabled only when in reverse
0 to 2 0 A A − 57B 208
n8: PM Motor Control Tuning
Use n8 parameters to control the PM motor control.
n8-45
<15>
Speed Feedback Detection
Control Gain
Sets the gain for internal speed feedback detection control.
This parameter does not typically require adjustment.
Increase this setting if hunting occurs.
Decrease to lower the response.
0.00 to
10.00
0.80 −−A538208
n8-47
Pull-In Current
Compensation Time
Constant
Sets the time constant to make the pull-in current and actual
current value agree.
Decrease the value if the motor begins to oscillate.
Increase the value if it takes too long for the current
reference to equal the output current.
0.0 to
100.0 s
5.0 s −−A 53A 208
n8-48
<15>
Pull-In Current
Defines the amount of current provided to the motor during
no-load operation at a constant speed.
Set as a percentage of the motor rated current. Increase this
setting when hunting occurs while running at a constant
speed.
<39> 30% −−A 53B 208
n8-49
<15>
d-Axis Current for High
Efficiency Control
Sets the amount of d-axis current when using Energy
Saving control.
<40>
0%
<9>
−−A 53C 209
n8-50
<15>
Heavy Load Current Level
Sets the load level to begin high-efficiency control of an
IPM motor.
Note: An Operator Programming Error (oPE) occurs if the
setting value deviates from the following condition: n8-
74≤n8-75≤n8-50.
50 to
255%
80% −−A 53D 209
n8-51
<15>
Acceleration/Deceleration
Pull-In Current
Sets the pull-in current during acceleration as a percentage
of the motor rated current (E5-03). Set to a high value when
more starting torque is needed.
0 to 200% 50% −−A 53E 209
n8-54
<15>
Voltage Error Compensation
Time Constant
Sets the time constant for voltage error compensation.
Adjust the value when
hunting occurs at low speed.
hunting occurs with sudden load changes. Increase in steps
of 0.1 or disable the compensation by setting n8-45 to 0.
oscillations occur at start. Increase the value in steps of 0.1.
0.00 to
10.00 s
1.00 s −−A 56D 209
n8-55 Load Inertia
Sets the ratio between motor and machine inertia.
0: less than 1:10.
1: between 1:10 to 1:30.
2: between 1:30 to 1:50.
3: higher than 1:50.
0 to 3 0 −−A 56E 209
n8-62
<17>
Output Voltage Limit
Sets the limit for the output voltage. Adjustment is
normally needed only if the input voltage is below the n8-
62 set value. In this case set n8-62 to the input voltage.
0.0 to
230.0
200
Vac
- - A 57D 210
n8-63
<38>
Output Voltage Limit Output Voltage Limit Gain 1
0.00 to
100.00
1.00 −−A 57E 210
n8-65
Speed Feedback Detection
Control Gain during ov
Suppression
Sets the gain used for internal speed feedback detection
during ov Suppression
0.00 to
10.00
1.50 - - A 65C 210
n8-68
<38>
Output Voltage Limit Gain 2 Determines a second gain level applied to the input voltage. 0,1 0.95 −−A237210
No. Name Description Range Def.
Control
Mode
Addr.
Hex
Pg.
V/f
OL
V
P
M
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