YASKAWA GA80U4720ABM Manual page 652

12.2 A: Initialization Parameters
Adjustment description
E1-08 [Mid Point A Voltage]
• Increase torque at low speeds
E1-10 [Minimum Output Voltage]
• Prevent shock during start up
*1 The default setting changes when the settings for C6-01 [Normal / Heavy Duty Selection] and o2-04 [Drive Model (KVA) Selection]
change.
*2 The default setting changes when the settings for A1-02 [Control Method Selection] and E1-03 [V/f Pattern Selection] change.
*3 This is the setting for 200 V class drives. Multiply the voltage by 2 for 400 V class drives.
Open Loop Vector Control Method
Do not adjust parameter C4-01 [Torque Compensation Gain]. Keep this parameter at its default setting.
If you cannot get speed accuracy during regeneration, set C3-04 = 1 [Slip Compensation at Regen = Enabled Above
6Hz]. If you cannot get speed accuracy at high speeds, set C3-05 = 1 [Output Voltage Limit Selection = Enabled].
Table 12.16 Adjustment of Drive Control (Open Loop Vector Control Method)
Adjustment description
• Torque, increase speed response
n2-01 [Automatic Freq Regulator
• Prevent hunting and oscillation
Gain]
at middle-range speeds (10 Hz
to 40 Hz)
• Torque, increase speed response
C4-02 [Torque Compensation
Delay Time]
• Prevent hunting and oscillation
• Increase speed response
C3-02 [Slip Compensation Delay
Time]
• Increase speed stability
• Improve speed accuracy C3-01 [Slip Compensation Gain]
• Increasing motor excitation
sound
C6-02 [Carrier Frequency
• Prevent hunting and oscillation
Selection]
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 Voltage]
• Prevent shock during 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 (KVA) 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 12.17 Adjustment of Drive Control (Closed Loop Vector Control Method)
Adjustment description
C5-01 [ASR Proportional Gain 1]
• Torque, increase speed response
• Prevent hunting and oscillation
C5-03 [ASR Proportional Gain 2]
C5-02 [ASR Integral Time 1]
• Torque, increase speed response
• Prevent hunting and oscillation
C5-04 [ASR Integral Time 2]
652
Parameter Number Possible Solutions
• If the torque is not sufficient at
low speeds, increase the setting
value.
• If there is a large shock during
start up, decrease the setting
value.
Parameter Number Possible Solutions
• If torque and speed response are
slow, decrease the setting value.
• If there is hunting or oscillation,
increase the setting value.
• If torque and speed response are
slow, decrease the setting value.
*1
• If there is hunting or oscillation,
increase the setting value.
• 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.
Parameter Number Possible Solutions
• If the torque and speed response
are slow, increase the setting
value.
• If there is hunting or oscillation,
decrease the setting value.
• If torque and speed response are
slow, decrease the setting value.
• If there is hunting or oscillation,
increase the setting value.
Default
*2 *3
15.0 V
*2 *3
9.0 V
Default
1.00
20 ms
200 ms
1.0
*2
*3
11.0 V
*3
2.0 V
Default
20.00
0.500 s
YASKAWA SIEPC71061737B GA800 Drive Technical Reference
Recommended Setting
*3
13.0 V to 16.0 V
*3
7.0 V to 10.0 V
Recommended Setting
0.50 - 2.00
20 ms to 100 ms
100 ms to 500 ms
0.5 - 1.5
1 - F
*3
12.0 V to 13.0 V
*3
2.0 V to 3.0 V
Recommended Setting
10.00 - 50.00
0.300 s to 1.000 s