11.10 n: SPECIAL
458 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
◆ n3: HIGHSLIP/OVEREXCITATION BRAKE
No.
(Hex.)
Name Description
Default
(Range)
Ref.
n3-01
(0588)
Expert
HSB Dec Freq Width
Sets how much the drive lowers the output frequency during high-slip braking as a
percentage where E1-04 [Max Output Frequency] = 100%.
5%
(1 - 20%)
787
n3-02
(0589)
Expert
HSB CurrLim Level
Sets the maximum current output during high-slip braking as a percentage where E2-01
[Mot Rated Current (FLA)] = 100%. Also set the current suppression to prevent
exceeding drive overload tolerance.
Determined by C6-01,
L8-38
(0 - 200%)
787
n3-03
(058A)
Expert
HSB DwellTime@Stop
Sets the dwell time, a length of time when high-slip braking is ending and during which
the motor speed decreases and runs at a stable speed. For a set length of time, the drive
will hold the actual output frequency at the minimum output frequency set in E1-09.
1.0 s
(0.0 - 10.0 s)
788
n3-04
(058B)
Expert
HSB Overload Time
Sets the time used to detect oL7 [High Slip Braking Overload], which occurs when the
output frequency does not change during high-slip braking. Usually it is not necessary
to change this setting.
40 s
(30 - 1200 s)
788
n3-13
(0531)
OverExcBr Gain
Sets the gain value that the drive multiplies by the V/f pattern output value during
overexcitation deceleration to calculate the overexcitation level.
1.10
(1.00 - 1.40)
788
n3-14
(0532)
Expert
OverExcBr Harmonics
Selection
Sets the function that injects harmonic signals during overexcitation deceleration.
0 : Disabled
1 : Enabled
0
(0, 1)
788
n3-21
(0579)
OverExcBr Current
Level
Sets the upper limit of the current that is suppressed at the time of overexcitation
deceleration, where the drive rated current = 100% value.
100%
(0 - 150%)
789
n3-23
(057B)
OverExcBr Operation
Sets the direction of motor rotation where the drive will enable overexcitation.
1 : Enabled@Both directions
2 : Enabled@FW direction
3 : Enabled@REV direction
1
(1 - 3)
789
◆ n4: ADV. OPEN LOOP VECTOR TUNING
No.
(Hex.)
Name Description
Default
(Range)
Ref.
n4-60
(1B80)
LoSpeed Comp Gain
Sets a compensation gain to improve the control qualities for motoring loads in the low
speed range.
1.000
(0.500 - 2.000)
789
n4-61
(1B81)
LoSpeed Comp
Frequency Level
Sets a frequency at which the settings for n4-60 [LoSpeed Comp Gain], n4-62 [Reg
LoSpd Cmp Gain] are enabled. When the output frequency < n4-61, the drive adjusts
the torque to agree with the settings for n4-60 and n4-62. Usually it is not necessary to
change this setting.
6.00 Hz
(0.50 - 12.00 Hz)
789
n4-62
(1B82)
Reg LoSpd Cmp Gain
Sets a compensation gain to improve the control qualities for regenerative loads in the
low speed range.
1.000%
(0.500 - 2.000%)
790
n4-63
(1B83)
HF SpdEstim Response
Sets the responsiveness of the speed estimation in high speed ranges, where the output
frequency is ≥ n4-67 [SpEstim Gain SwFrequency].
1.000
(0.001 - 5.000)
790
n4-64
(1B84)
LF SpdEstim Response
Sets the responsiveness of the speed estimation in low speed ranges, where 0 ≤ the
output frequency, which is < n4-67 [SpEstim Gain SwFrequency].
1.000
(0.001 - 5.000)
790
n4-65
(1B85)
HF FlxEstim Response
Sets the responsiveness of the magnetic flux estimation in high speed ranges, where the
output frequency is ≥ n4-67 [SpEstim Gain SwFrequency]. Usually it is not necessary to
change this setting.
0.90
(0.50 - 1.50)
790
n4-66
(1B86)
LF FlxEstim Response
Sets the responsiveness of the magnetic flux estimation in low speed ranges, where 0 ≤
the output frequency, which is < n4-67 [SpEstim Gain SwFrequency]. Usually it is not
necessary to change this setting.
0.90
(0.50 - 1.50)
790
n4-67
(1B87)
SpEstim Gain
SwFrequency
Sets the switching frequency for estimation gain for these parameters:
n4-63 [HF SpdEstim Response]
n4-64 [LF SpdEstim Response]
n4-65 [HF FlxEstim Response]
n4-66 [LF FlxEstim Response]
Usually it is not necessary to change this setting.
6.00 Hz
(0.00 - E1-04)
791
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