YASKAWA GA700 - Closed Loop Vector Control Method

3.10 Fine Tuning during Test Runs (Adjust the Control Function)
208 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Issue Parameter Number Solution Default Setting Recommended
Setting
• Speed response is slow.
• Speed is not stable.
C3-02 [Slip
Compensation Delay
Time]
• If speed response is
slow, decrease the
setting value in
increments of 10 ms.
• If speed is not stable,
increase the value in
increments of 10 ms.
200 ms
*1
100 - 500 ms
Speed precision is
unsatisfactory.
C3-01 [Slip
Compensation Gain]
• If speed is too slow,
increase the setting
value in increments of
0.1.
• If speed is too fast,
decrease the setting
value in increments of
0.1.
1.0
*2
0.5 - 1.5
• The volume of the
motor excitation sound
is too high.
• Hunting or oscillation
at low speeds (10 Hz or
lower)
C6-02 [Carrier Frequency
Selection]
• If the volume of the
motor excitation sound
is too high, increase the
carrier frequency.
• If hunting or oscillation
occur at low speeds,
decrease the carrier
frequency.
1 (2 kHz)
*3
0 to upper limit value
• Torque at low speeds
(10 Hz or lower) is not
sufficient. speed
response is slow.
• Speed response is slow.
• Large initial vibration
at start up.
• E1-08 [Mid Point A
Voltage]
• E1-10 [Minimum
Output Voltage]
• If torque or speed
response are slow,
increase the setting
value.
• If there is large initial
vibration at start up,
decrease the setting
value
Note:
If the setting value is
set too high, a large
torque reference may
be output even with
light loads.
• E1-08: 11.0
*2
• E1-10: 2.0
*2
Default setting +/- 2 V
*4
*1 Default value changes when A1-02 [Control Method Selection] and o2-04 [Drive Model (KVA) Selection] values change.
*2 Default value changes when A1-02 [Control Method Selection] and E1-03 [V/f Pattern Selection] values change.
*3 Default value changes when o2-04 [Drive Model (KVA) Selection] and C6-01 [Normal / Heavy Duty Selection] values change.
*4 Recommended settings are for 200 V class drives. Multiply the voltage by 2 for 400 V class drives.
◆ Closed Loop Vector Control Method
Table 3.19 Parameters for Fine Tuning the Drive (Closed Loop Vector Control Method)
Issue Parameter Number Solution Default Setting Recommended
Setting
• Torque or speed
response are slow.
• Hunting or oscillation
• High speed
C5-01 [ASR
Proportional Gain 1
(P)]
• Low speed
C5-03 [ASR
Proportional Gain 2
(P)]
*1
• If torque or speed
response are slow,
increase the setting
value in increments of
5.00.
• If hunting or oscillation
occur, decrease the
setting value.
20.00 10.00 - 50.00
• High speed
C5-02 [ASR Integral
Time 1 (I)]
• Low speed
C5-04 [ASR Integral
Time 2 (I)]
*1
• If torque or speed
response are slow,
decrease the setting
value.
• If hunting or oscillation
occur, increase the
setting value.
0.500 s 0.300 to 1.000 s
The drive cannot find
ASR proportional gain or
integral time for low
speed or high speed.
C5-07 [ASR Gain
Switchover Frequency]
*1
Change the ASR
proportional gain and
ASR integral time to
conform to the output
frequency.
0.0 Hz
0.0 Hz to maximum
output frequency