B.9 N: Special Adjustment; N1: Hunting Prevention; N2: Speed Feedback Detection Control (Afr) Tuning; N3: High Slip Braking (Hsb) And Overexcitation Braking - YASKAWA iQpump1000 Quick Start Manual

B.9 n: Special Adjustment

B.9 n: Special Adjustment
The n parameters adjust more advanced performance characteristics such as Hunting Prevention, High Slip Braking, and
Overexcitation Braking.
u

n1: Hunting Prevention

No.
(Addr. Name
Hex)
n1-01 Hunting Prevention
(0580) Selection
n1-02 Hunting Prevention
(0581) Gain Setting
n1-03 Hunting Prevention
(0582) Time Constant
n1-05 Hunting Prevention
(0530) Gain while in Reverse
<1> Default setting is dependent on parameter o2-04, Drive Model Selection.
u

n2: Speed Feedback Detection Control (AFR) Tuning

No.
(Addr. Name
Hex)
Speed Feedback
n2-01
Detection Control
(0584)
(AFR) Gain
Speed Feedback
n2-02
Detection Control
(0585)
(AFR) Time Constant 1
Speed Feedback
n2-03
Detection Control
(0586)
(AFR) Time Constant 2
u

n3: High Slip Braking (HSB) and Overexcitation Braking

No.
(Addr. Name
Hex)
High-Slip Braking
n3-01
Deceleration Frequency
(0588)
Width
n3-02 High-Slip Braking
(0589) Current Limit
n3-03 High-Slip Braking
(058A) Dwell Time at Stop
296
LCD Display
Hunt Prev Select
V/f V/f
0: Disabled
0: Disabled
1: Enabled
1: Enabled
V/f V/f
If the motor vibrates while lightly loaded, increase the gain by
Hunt Prev Gain
0.1 until vibration ceases. If the motor stalls, decrease the gain
by 0.1 until the stalling ceases.
V/f V/f
Hunt Prev Time
Sets the time constant used for Hunting Prevention.
V/f V/f
Hprev Gain @Rev
Sets the gain used for Hunting Prevention. If set to 0, the gain
set to n1-02 is used for operation in reverse.
LCD Display
OLV OLV OLV OLV
Sets the internal speed feedback detection control gain in the
AFR Gain
automatic frequency regulator (AFR).
If hunting occurs, increase the set value. If response is low,
decrease the set value.
OLV OLV OLV OLV
AFR Time
Sets the time constant used for speed feedback detection control
(AFR).
OLV OLV OLV OLV
AFR Time 2
Sets the AFR time constant to be used during Speed Search and
during regen.
LCD Display
V/f V/f
Sets the output frequency reduction step width for when the
HSB DecStepWidth
drive stops the motor using HSB. Set as a percentage of the
maximum output frequency. Increase this setting if overvoltage
occurs during HSB.
V/f V/f
HSB Current Lim
Sets the current limit during HSB as a percentage of the motor
rated current.
V/f V/f
Sets the time the drive will run with minimum frequency
HSB DwelTim@Stp
(E1-09) at the end of deceleration.
If this time is set too low, the machine inertia can cause the motor
to rotate slightly after HSB.
Description
Description
Description
YASKAWA TOEP YAIP1W 01A YASKAWA AC Drive - iQpump1000 Quick Start Guide
Values Page
Default: 1
–
Range: 0, 1
Default: 1.00
Min.: 0.00 –
Max.: 2.50
<1>
Default:
–
Min.: 0 ms
Max.: 500 ms
Default: 0.00
Min.: 0.00 –
Max.: 2.50
Values Page
Default: 1.00
Min.: 0.00 –
Max.: 10.00
Default: 50 ms
Min.: 0 –
Max.: 2000
Default: 750 ms
Min.: 0 –
Max.: 2000
Values Page
Default: 5%
Min.: 1 –
Max.: 20
<1>
Default:
–
Min.: 100%
Max.: 200%
Default: 1.0 s
Min.: 0.0 –
Max.: 10.0