Parameter Details
11
11.4 C: Tuning
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 767
■ C5-07: ASR Gain Switchover Frequency
No.
(Hex.)
Name Description
Default
(Range)
C5-07
(0221)
ASR Gain
Switchover
Frequency
Sets the frequency where the drive will switch between these parameters:
C5-01 and C5-03 [ASR Proportional Gain 1/2]
C5-02 and C5-04 [ASR Integral Time 1/2]
Determined by A1-02
(Determined by A1-
02)
Switching the proportional gain and integral time in the low or high speed range can help operation become
stable. A good switching point is 80% of the frequency where oscillation occurs or at 80% of the maximum output
frequency.
Note:
An MFDI set for H1-xx = 77 [MFDI Function Select = ASR Gain (C5-03) Select] will have priority over the ASR gain switching
frequency.
■ C5-08: ASR Integral Limit
No.
(Hex.)
Name Description
Default
(Range)
C5-08
(0222)
ASR Integral Limit
Sets the upper limit for ASR as a percentage of the rated load.
400%
(0 - 400%)
■ C5-12: Integral Operation @ Accel/Decel
No.
(Hex.)
Name Description
Default
(Range)
C5-12
(0386)
Integral Operation @
Accel/Decel
Sets integral operation during acceleration and deceleration.
0
(0, 1)
If you enable integral operation when you are driving a heavy load or a high inertia load, it could cause problems
with overshoot or undershoot at the end of acceleration and deceleration. If there are problems with overshooting
and undershooting, set this parameter to
0 : Disabled
Integral operation is not enabled during acceleration or deceleration. Integral operation is always enabled during
constant speed.
1 : Enabled
Integral operation is always enabled.
■ C5-17: Motor Inertia
No.
(Hex.)
Name Description
Default
(Range)
C5-17
(0276)
Expert
Motor Inertia
Sets the motor inertia.
Determined by o2-04,
C6-01, and E5-01
(0.0001 - 6.0000
kgm
2
)
When A1-02 = 3 or 7 [Control Method Selection = CLV or CLV/PM], the drive automatically sets C5-17 to the
value of [Motor Inertia] when you do Inertia Tuning or ASR Tuning.
■ C5-18: Load Inertia Ratio
No.
(Hex.)
Name Description
Default
(Range)
C5-18
(0277)
Expert
Load Inertia Ratio
Sets the load inertia ratio for the motor inertia.
1.0
(0.0 - 6000.0)
When A1-02 = 3 or 7 [Control Method Selection = CLV or CLV/PM], the drive automatically sets C5-18 to the
load inertia ratio when you do Inertia Tuning or ASR Tuning.
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