5.3 C: Tuning
150
YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
n
C5-07: ASR Gain Switching Frequency
Sets the frequency where the drive should switch between ASR proportional gain 1 and 2 (C5-01, C5-03) as well as
between integral time 1 and 2 (C5-02, C5-04).
Note:
A multi-function input set for the ASR gain switch (H1-
= 77) takes priority over the ASR gain switching frequency.
Switching the proportional gain and integral time in the low or high speed range can help stabilize operation and avoid
resonance problems. A good switching point is about 80% of the frequency where oscillation occurs, or at 80% of the
target speed. Refer to
C5-01, C5-03 / C5-02, C5-04: ASR Proportional Gain 1, 2 / ASR Integral Time 1, 2 on page 148
.
n
C5-08: ASR Integral Limit
Sets the upper limit for ASR as a percentage of the rated load.
n
C5-11: Regenerative ASR Limit
Sets an upper limit for frequency compensation when using ASR. The value is set as a percentage of the maximum
output frequency.
n
C5-12: Integral Operation during Accel/Decel (V/f w/PG)
Enables integral operation during acceleration and deceleration. Integral operation should be used when driving a heavy
load or a high inertia load, but can cause problems with overshoot at the end of acceleration and deceleration. Refer to
ASR Setup Problems and Corrective Actions on page 148
to solve such problems.
Setting 0: Disabled
Integral operation occurs only during constant speed and not during acceleration or deceleration.
Setting 1: Enabled
Integral operation is always enabled.
n
C5-17, C5-18: Motor Inertia, Load Inertia Ratio
C5-17 and C5-18 determine the ratio of the machine inertia and the inertia of the motor being used.
These parameters are set automatically when Inertia Tuning and ASR Tuning are performed in CLV and CLV/PM control
modes.
Refer to Auto-Tuning on page 87
for details on Auto-Tuning or enter the data manually.
n
C5-21, C5-23 / C5-22, C5-24: Motor 2 ASR Proportional Gain 1, 2 / Integral Time 1, 2
These parameters function for motor 2 in the same way that C5-01 through C5-04 function for motor 1. For more details,
see
C5-01, C5-03 / C5-02, C5-04: ASR Proportional Gain 1, 2 / ASR Integral Time 1, 2 on page 148
.
No.
Parameter Name
Setting Range
Default
C5-07
<1> In AOLV/PM and CLV/PM control modes, the setting units and range are expressed as a percent (0.0 to 100.0%) instead of in Hz. The default
setting is 0.0%.
ASR Gain Switching Frequency
0.0 to 400.0 Hz
Determined by A1-02
No.
Parameter Name
Setting Range
Default
C5-08
ASR Integral Limit
0 to 400%
400%
No.
Parameter Name
Setting Range
Default
C5-11
Regenerative ASR Limit
0.0% to 20.0%
0.0%
No.
Parameter Name
Setting Range
Default
C5-12
Integral Operation during Accel/Decel
0, 1
0
No.
Parameter Name
Setting Range
Default
C5-17
Motor Inertia
0.0001 to 600.00 kgm
2
Determined by C6-01, E5-01 and
o2-04
C5-18
Load Inertia Ratio
0.0 to 6000.0
1.0