YASKAWA V1000 Series Installation & Start-Up Manual

5.2 Motor Performance Fine Tuning
YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07) 189
Troubleshooting
5
◆ Open Loop Vector (OLV) Motor Control Method Tuning
Table 5.2 Parameters for Tuning the Drive in OLV Motor Control Method
Problem Parameter No. Countermeasure
Default
Value
Suggested
Setting
• Poor motor torque and speed
response
• Control motor hunting and
oscillation at speeds between
10 and 40 Hz.
AFR Gain
(n2-01)
• If motor torque and speed response are too
slow, gradually decrease the setting by
0.05.
• If motor hunting and oscillation occur,
gradually increase the setting by 0.05.
1.00 0.50 to 2.00
• Poor motor torque and speed
response
• Control motor hunting and
oscillation at speeds between
10 and 40 Hz.
AFR Time
Constant 1
(n2-02)
• To improve motor torque speed response,
gradually reduce this setting by
10 ms and check the performance.
• If motor hunting and oscillation occur as a
result of load inertia, gradually increase
the setting by 50 ms and check the
performance. Note: Ensure that n2-02 ≤
n2-03. When making adjustments to n2-
02, set C4-02 (Torque Compensation
Primary Delay Time Constant 1)
accordingly.
50 ms
50 to 2000
ms
• Overvoltage trips when
accelerating, decelerating, or
during sudden speed or load
changes.
AFR Time
Constant 2
(n2-03)
• If overvoltage trips occur, gradually
increase this setting by 50 ms.
• If response is slow, gradually reduce this
setting by 10 ms. Note: Ensure that n2-02
≤ n2-03. When making adjustments to n2-
03, increase the value of
C4-06 (Torque Compensation Primary
Delay Time 2) proportionally.
750 ms
750 to 2000
ms
• Poor motor torque and speed
response
• Motor hunting and
oscillation.
Torque
Compensation
Primary Delay
Time Constant 1
(C4-02)
• To improve motor torque speed response,
gradually reduce this setting by 2 ms and
check the performance.
• If motor hunting and oscillation occur,
gradually increase this setting by 10 ms.
Note: Ensure that C4-02 ≤ C4-06. When
making adjustments to C4-02, increase n2-
02 (AFR Time Constant) proportionally.
20 ms
<1>
20 to 100 ms
• Overvoltage trips when
accelerating, decelerating, or
during sudden speed or load
changes
Torque
Compensation
Primary Delay
Time Constant 2
(C4-06)
• If overvoltage trips occur, gradually
increase this setting by 10 ms and check
the performance.
• If response is slow, gradually reduce this
setting by 2 ms and check the
performance. Note: Ensure that C4-02 ≤
C4-06. When changing C4-06 (Torque
Compensation Primary Delay Time
constant 2), increase the value of n2-03
proportionally.
150 ms
150 to 750
ms

YASKAWA V1000 Series Specifications

General

Model	V1000 Series
Series	V1000
Output Frequency	0.1 to 400 Hz
Overload Capacity	150% for 60 seconds
Type	AC Drive
Control Method	V/f Control
Input Voltage	200-240V, 380-480V
Output Voltage	0 to Input Voltage
Power Range	0.1 to 18.5 kW
Horsepower	0.2 to 25 HP
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheating, Short Circuit, Ground Fault
Communication Interfaces	Modbus RTU
Enclosure	IP20
Ambient Temperature	-10 to +50°C
Storage Temperature	-20 to +60°C
Humidity	5 to 95% RH (non-condensing)
Cooling Method	Fan Cooled