Startup Procedure and
Test Run
3
3.10 Fine Tuning during Test Runs (Adjust the Control Function)
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 205
Issue Parameter Number Solution Default Setting Recommended
Setting
• Torque at low speeds
(10 Hz or lower) is not
sufficient.
• Large initial vibration
at start up.
• E1-08 [Mid Point A
Voltage]
• E1-10 [Minimum
Output Voltage]
• If torque at low speeds
(10 Hz or lower) is not
sufficient, increase the
setting value.
• If there is large initial
vibration at start up,
decrease the setting
value
• E1-08: 15.0 V
*3
• E1-10: 9.0 V
*3
Default setting +/- 5 V
*4
In V/f control method,
speed precision is
unsatisfactory.
C3-01 [Slip
Compensation Gain]
Set E2-01 [Motor Rated
Current], E2-02 [Motor
Rated Slip], and E2-03
[Motor No-Load
Current], then adjust C3-
01.
0.0 (no slip compensation) 0.5 - 1.5
In Closed Loop V/f
control method, speed
precision is unsatisfactory.
• C5-01 [ASR
Proportional Gain 1
(P)]
• C5-02 [ASR Integral
Time 1 (I)]
*5
Adjust C5-01, C5-02.
• C5-01: 0.20
• C5-02: 0.200 s
• Proportional gain =
0.10 to 1.00
• Integral time = 0.100 to
2.000 s
*1 Default value changes when o2-04 [Drive Model (KVA) Selection] and C6-01 [Normal / Heavy Duty Selection] values change.
*2 Default value changes when A1-02 [Control Method Selection] and o2-04 [Drive Model (KVA) Selection] values change.
*3 Default value changes when A1-02 [Control Method Selection] and E1-03 [V/f Pattern Selection] values change.
*4 Recommended settings are for 200 V class drives. Multiply the voltage by 2 for 400 V class drives.
*5 In Closed Loop V/f Control, ASR only controls the output frequency. You cannot make a high-gain as in Closed Loop Vector control.
◆ Open Loop Vector Control Method
In Open Loop Vector Control, keep C4-01 [Torque Compensation Gain] at its default setting (1.00). Do not adjust
it.
If you cannot get speed precision during regeneration in Open Loop Vector Control, set C3-04 = 1 [Slip
Compensation @ Regen Select = Enabled Above 6Hz].
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