YASKAWA GA800 Programming Manual page 189

Adjustment description
Change the ASR proportional gain
and ASR integral time in C5-07 [ASR Gain Switchover
accordance with the output Frequency]
frequency.
• Prevent hunting and oscillation
C5-06 [ASR Delay Time]
Elevator Start/Stop and Accel/Decel Time Shock Reduction
S-Curve Characteristics, Accel & Decel Time
Adjustment Parameter
C1-01, C1-03, C1-05, C1-07
C1-02, C1-04, C1-06, C1-08
C2-01
C2-02
C2-03
C2-04
Note:
• When decreased operation times are necessary for the application, for example with cranes and hoists, do not use S-curve characteristic
times.
• The default setting for C2-04 [S-Curve Time @ End of Decel] will be 0.00 seconds. The default setting for other S-curve characteristics will
be 0.20 seconds. Set the acceleration/deceleration times and S-curve characteristic time correctly for acceleration/deceleration start up and
end. The recommended setting of the S-curve characteristics time is 0.2 to 1.0 seconds.
• When you use the C1-11 [Accel/Decel Time Switchover Freq], you can switch the acceleration/deceleration rate automatically during
acceleration/deceleration. The default setting is disabled.
When the Output Frequency ≥ C1-11, operate at the acceleration and deceleration times set in C1-01 and C1-02
When the Output Frequency < C1-11, operate at the acceleration and deceleration times set in C1-07 and C1-08
• During low speed operation, if the Output Frequency < E1-09 [Minimum Output Frequency] in the S-Curve Time @ Start of Decel, the
drive will cancel the S-curve characteristics and will do DC Inject Braking at Stop (zero speed control).
Dwell Function at Start
Adjustment Parameter
b6-01
b6-02
H2-xx = 5
YASKAWA TOEPYAIGA8002B GA800 Drive Programming
Parameter Number Possible Solutions
If you cannot establish ASR
proportional gain or integral time
for low speed or high speed, switch
as specified by the output
frequency.
• If there is unsatisfactory
machine rigidity and oscillation
is possible, increase the setting
value.
Figure 2.5 S-curve Characteristics, Accel & Decel Time
2.2 A: Initialization Parameters
Default
0.0 Hz
(Do not switch)
0.004 s
Acceleration Time 1 to 4
Deceleration Time 1 to 4
S-Curve Time @ Start of Accel
S-Curve Time @ End of Accel
S-Curve Time @ Start of Decel
S-Curve Time @ End of Decel
Dwell Reference at Start
Dwell Time at Start
Frequency Detection 2
Recommended Setting
0.0 Hz to Maximum frequency
0.004 s to 0.020 s
Name
Name
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