YASKAWA GA700 Technical Manual page 691

Adjustment Parameter Number
description
C3-02 [Slip
• Increase speed response
Compensation Delay
• Increase speed stability
Time]
• Improve speed
C3-01 [Slip
accuracy Compensation Gain]
• Increase motor
excitation sound
C6-02 [Carrier Frequency
• Prevent hunting and
Selection]
oscillation at low-range
speeds (10 Hz to or
lower)
E1-08 [Mid Point A
Voltage]
• Increase torque and
speed response at low
speeds
E1-10 [Minimum Output
• Prevent shock during
Voltage]
start up
*1 If the value for C4-02 [Torque Compensation Delay Time] is high, the current can increase during start up. Adjust and check the
current during start up.
*2 The default setting changes when the settings for C6-01 [Normal / Heavy Duty Selection] and o2-04 [Drive Model Selection] change.
*3 This is the setting for 200 V class drives. Multiply the voltage by 2 for 400 V class drives.
Closed Loop Vector Control Method
Table 11.21 Adjustment of Drive Control (Closed Loop Vector Control Method)
Adjustment Parameter Number
Description
C5-01 [ASR Proportional
Gain 1]
• Torque, increase speed
response
• Prevent hunting and
C5-03 [ASR Proportional
oscillation
Gain 2]
C5-02 [ASR Integral
Time 1]
• Torque, increase speed
response
• Prevent hunting and
C5-04 [ASR Integral
oscillation
Time 2]
Change the ASR
proportional gain and
C5-07 [ASR Gain
ASR integral time in
Switchover Frequency]
accordance with the
output frequency.
• Prevent hunting and
C5-06 [ASR Delay Time]
oscillation
Elevator Start/Stop and Accel/Decel Time Shock Reduction
Shock when you start and stop the elevator and when you accelerate and decelerate is an issue for passenger
elevator applications. If shock has an effect on the quality of the ride, adjust these parameters:
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Solution
• When speed response is
slow, decrease the
setting value.
• If speed is not stable,
increase the setting
value.
• If speed is too slow,
increase the setting
value.
• If speed is too fast,
decrease the setting
value.
• If there is a loud motor
excitation sound,
increase the setting
value.
• If there is hunting or
oscillation at low
speeds, decrease the
setting value.
• If the torque and speed
response are slow,
increase the setting
value.
• If there is a large shock
during start up,
decrease the setting
value.
Solution
• If torque and speed
response are slow,
increase the setting
value.
20.00
• If there is hunting or
oscillation, decrease the
setting value.
• If torque and speed
response are slow,
decrease the setting
value.
0.500 s
• If there is hunting or
oscillation, increase the
setting value.
If you cannot establish
ASR proportional gain or
0.0 Hz
integral time for low
speed or high speed,
(Do not switch)
switch as specified by the
output frequency.
• If there is unsatisfactory
machine rigidity and
oscillation is possible, 0.004 s
increase the setting
value.
11.2 A: Initialization Parameters
Default Setting Suggested Setting
200 ms 100 - 500 ms
1.0
*2
11.0 V 12.0 V to 13.0 V
*3
2.0 V 2.0 V to 3.0 V
*3
Default Setting Suggested Setting
10.00 to 50.00
0.300 to 1.000 seconds
0.0 to Maximum
frequency
0.004 to 0.020 seconds
0.5 - 1.5
1 - F
*3
*3
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