Omron Q2V Series Technical Manual page 133

Table 4.18 Parameters for Fine Tuning the Drive (A1-02 = 2 [OLVector])
Issue
• Unsatisfactory motor torque and speed
response
• Hunting or oscillation at mid-range
speeds (10 Hz to 40 Hz)
ov [overvoltage] occurs when the drive
stops accelerating, starts to decelerate, or
when there are large changes in the load.
• Unsatisfactory motor torque and speed
response
• Hunting or oscillation
• Speed response is slow.
• Speed is not stable.
Speed precision is unsatisfactory.
• The volume of the motor excitation
sound is too high.
• Hunting or oscillation at low speeds (10
Hz or lower)
• 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.
*1 The default setting changes when the settings for A1-02 [Control Method] and o2-04 [Drive KVA Selection] change.
*2 The default setting changes when the settings for A1-02 [Control Method] and E1-03 [V/f Pattern Selection] change.
*3 The default setting changes when the settings for C6-01 [Normal / Heavy Duty Selection] and o2-04 change.
*4 Recommended settings are for 200 V class drives. Multiply the voltage by 2 for 400 V class drives.
SIEPCYEUOQ2V01A Q2V Technical Manual
4.11 Fine Tuning during Test Runs (Adjust the Control Function)
Parameter
Number
• To increase the speed of torque or speed response, decrease
the setting value in increments of 0.05.
n2-01 [AFR Gain]
• If hunting or oscillation occur, decrease the setting value in
increments of 0.05.
• To increase the speed of torque or speed response, decrease
the setting value in increments of 10 ms and examine the
response.
• If hunting or oscillation occur or if the load inertia is too
much, increase the setting value in increments of 50 ms and
examine the response.
n2-02 [AFR Time 1]
Note:
Make sure that this parameter setting is: n2-02 ≤ n2-03 [AFR
Time 2] holds true.
When you adjust n2-02, you must also increase the C4-02
[Trq Comp Delay Time] value by the same ratio.
• If ov occurs, increase the setting value in increments of 50 ms
and examine the response.
• If the response is not sufficient, decrease the setting value in
increments of 10 ms and examine the response.
n2-03 [AFR Time 2]
Note:
Make sure that this parameter setting is: n2-02 [AFR Time 1]
≤ n2-03. When you adjust n2-03, you must also increase the
C4-06 [M2 Trq Comp Delay Time] value by the same ratio.
• If ov occurs, increase the setting value in increments of 10 ms
and examine the response.
• If the response is not sufficient, decrease the setting value in
increments of 2 ms and examine the response.
C4-06 [M2 Trq
Note:
Comp Delay Time]
Make sure that this parameter setting is: C4-02 [Trq Comp
Delay Time] ≤ C4-06.
When you adjust C4-06, you must also increase the n2-03
[AFR Time 2] value by the same ratio.
• If torque or speed response are slow, decrease the setting
value in increments of 2 ms.
• If hunting or oscillation occur, increase the setting value in
increments of 10 ms.
C4-02 [Trq Comp
Note:
Delay Time]
Make sure that this parameter setting is: C4-02 ≤ C4-06 [M2
Trq Comp Delay Time].
When you adjust C4-02, you must also increase the n2-02
[AFR Time 1] value by the same ratio.
• If speed response is slow, decrease the setting value in
increments of 10 ms.
C3-02 [Slip Comp
Delay Time]
• If speed is not stable, increase the value in increments of 10
ms.
• If speed is too slow, increase the setting value in increments of
0.1.
C3-01 [Slip Comp
Gain]
• If speed is too fast, decrease the setting value in increments of
0.1.
• If the volume of the motor excitation sound is too high,
C6-02 [Carrier
increase the carrier frequency.
Frequency
• If hunting or oscillation occur at low speeds, decrease the
Selection]
carrier frequency.
• If torque or speed response are slow, increase the setting
value.
• E1-08 [Mid A
• If there is large initial vibration at start up, decrease the setting
Voltage]
value
• E1-10 [Min
Note:
Output Voltage]
If you set the value too high, the drive can output a large
torque reference although the load is light.
Possible Solutions Default Recommended
Setting
1.00 0.50 - 2.00
50 ms 50 ms to 2000 ms
750 ms 750 ms to 2000 ms
150 ms 150 ms to 750 ms
*1 *1
20 ms 20 ms - 100 ms
*1
200 ms 100 ms to 500 ms
*2
1.0 0.5 - 1.5
0 to upper limit
*3
7(Swing PWM1)
value
• E1-08: 12.0 V *2
Default setting +/- 2
*4
V
*2
• E1-10: 2.5 V
133
4