Motor Performance Fine Tuning; V/F Motor Control Method Tuning - YASKAWA V1000 Series Installation & Start-Up Manual

5.2 Motor Performance Fine Tuning

5.2 Motor Performance Fine Tuning
This section offers helpful information for counteracting oscillation, hunting, or
other faults that occur while performing a trial run. Refer to the section below that
corresponds to the motor control method used.
◆

V/f Motor Control Method Tuning

Table 5.1 Parameters for Tuning the Drive in V/f Motor Control Method
Problem
• Motor hunting and
oscillation at speeds
between 10 and 40 Hz
• Motor noise
• Motor hunting and
oscillation at speeds up
to 40 Hz
• Poor torque or speed
response
• Motor hunting and
oscillation
• Poor motor torque at
speeds below 10 Hz
• Motor hunting and
oscillation
• Poor motor torque at
low speeds
• Poor motor instability at
motor start
• Poor speed precision
<1> Default settings change when the motor control method is changed. The default setting shown is for V/f Control.
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YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
Parameter No.
• If insufficient motor torque relative to the
Hunting size of the load causes hunting, reduce the
Prevention Gain setting.
(n1-02) • When motor hunting and oscillation occur
with a light load, increase the setting.
• If the motor noise is too loud, increase the
carrier frequency.
Carrier • When motor hunting and oscillation occur at
Frequency speeds up to 40 Hz, lower the carrier
Selection frequency.
(C6-02) • The default setting for the carrier frequency
depends on the drive capacity (o2-04) and the
Drive Duty Selection (C6-01).
Torque • If motor torque and speed response are too
Compensation slow, decrease the setting.
Primary Delay • If motor hunting and oscillation occur,
Time (C4-02) increase the setting.
• If motor torque is insufficient at speeds below
Torque
10 Hz, increase the setting.
Compensation
• If motor hunting and oscillation occur at
Gain (C4-01)
speeds below 10 Hz, decrease the setting.
Mid Output • If torque is insufficient at speeds below 10
Voltage A Hz, increase the setting.
(E1-08) • If motor instability occurs at motor start,
Minimum decrease the setting. Note: The default value
Output Voltage is for 200 V class drives. Double this value
(E1-10) when using a 400 V class drive.
Slip • After setting the motor-rated torque (E2-01),
Compensation motor-rated slip (E2-02) and motor no-load
Gain current (E2-03), adjust the slip compensation
(C3-01) gain (C3-01).
Countermeasure
Default Suggested
Value Setting
1.00 0.50 to 2.00
7 (Swing
1 to A
PWM 1)
200 ms 100 to 1000
ms
<1>
1.00 0.50 to 1.50
E1-08:
16.0 V Initial value
E1-10: ±5 V
12.0 V
- 0.5 to 1.5