N2: Speed Feedback Detection Control Function; N3: High-Slip Braking - YASKAWA V1000 Series Installation & Start-Up Manual

No. Name
Use n2 parameters to configure the Speed Feedback Detection Control function operation.
Speed Feedback
n2-01 Detection Control
(AFR) Gain
Speed Feedback
n2-02 Detection Control
(AFR) Time Constant
Speed Feedback
Detection Control
n2-03
(AFR) Time Constant
2
High-Slip Braking
n3-01 Deceleration
Frequency Width
High-Slip Braking
n3-02
Current Limit
High-Slip Braking
n3-03
Dwell Time at Stop
High-Slip Braking
n3-04
Overload Time
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
Description

n2: Speed Feedback Detection Control Function

Sets the internal speed feedback detection
control gain in the automatic frequency
regulator (AFR).
This parameter does not typically require
adjustment. Adjust this parameter as follows:
If hunting occurs, increase the set value.
If response is low, decrease the set value.
Sets the AFR time constant 1.
Sets the AFR time constant 2. Increase the
setting if overvoltage occurs during sudden
load changes or the speed overshoots during
fast acceleration.

n3: High-Slip Braking

Use n3 parameters to configure the high-slip braking function.
Sets the output frequency reduction step width
when the drive stops the motor using high-slip
braking (HSB).
If Overvoltage (OV) faults occur during HSB,
this parameter may need to be increased.
Sets the current limit during HSB. Higher
n3-02 settings will shorten motor stopping
times but increase the motor current, and
therefore motor heating.
Sets the time the drive will run with minimum
frequency (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 completion.
Sets the time required for an HSB overload
fault (OL7) to occur when the drive output
frequency does not change during an HSB
stop. This parameter does not typically require
adjustment.
B.2 Parameter Table
Control
Mode
Range Def. Addr.
O
V/ P
Hex
L
f M
V
0.00 to
1.00 − A −
584
10.00
Adjust the setting by 0.05 units at a
time, while checking the response.
0 to 50
− A −
585
2000 ms
0 to 750
− A −
586
2000 ms
1 to 20 5% A − −
588
100 to 150
A − −
589
200 %
0.0 to
1.0 s A − − 58A
10.0
30 to
40 s A − − 58B
1200
Pg.
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—
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B
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