Omron Q2V Series, Техническое руководство

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4.11 Fine Tuning during Test Runs (Adjust the Control Function)
134 SIEPCYEUOQ2V01A Q2V Technical Manual
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Fine-Tuning Open Loop Vector Control for PM Motors
Table 4.19 Parameters for Fine Tuning the Drive ( A1-02 = 5 [PM OLVector] )
Issue Parameter
Number
Possible Solutions Default Recommended
Setting
Unsatisfactory motor performance
E1-xx parameters,
E5-xx parameters
• Check the settings for E1-06, E1-04 [Base Frequency, Max
Output Frequency] .
•
Check the E5-xx and make sure that all motor data has been
set correctly.
Note:
Do not set E5-05 [PM Mot Resistance (Ohms/Phase)] to a
line-to-line resistance value.
•
Do Auto-Tuning.
- -
Unsatisfactory motor torque and speed
response
n8-55 [Load Inertia] Adjust to match the load inertia ratio of the motor and machine. 0
Near the actual load
inertia ratio.
n8-45 [SpdFbck
Det.Gain]
Decrease the setting value in increments of 0.05. 0.80 -
C4-01 [Trq Comp
Gain]
Adjust the setting value.
Note:
Setting this value too high can cause overcompensation and
motor oscillation.
0.00 1.00
• Oscillation when the motor starts.
• Motor stalls.
n8-51 [Ac/Dec Pull-
In Current]
Increase the setting value in increments of 5%. 50% -
•
b2-02 [DCI
Braking Current]
• b2-03 [DCInj
Time@Start]
Use DC Injection Braking at start.
Note:
This can cause the motor to rotate in reverse for
approximately 1/8 of a turn at start.
• b2-02: 50%
• b2-03: 0.00 s
• b2-02: Adjust as
necessary.
• b2-03: 0.5 s
n8-55 [Load Inertia]
Increase the setting value.
Note:
When operating a single motor or with a minimum amount of
inertia, setting this value too high can cause motor
oscillation.
0
Near the actual load
inertia ratio.
There is too much current during
deceleration. n8-79 [Pull-In
Curr@Deceleration]
Set n8-79 < n8-51 .
50%
Note:
When n8-79 =
0 , the drive will
apply the n8-51
setting to the
pull-in current
during
deceleration.
Decrease in
increments of 5%.
Stalling or oscillation occurs when load is
applied during constant speed
n8-47 [Pull-In
Comp.Time
Constant]
Decrease the setting value in increments of 0.2 s. 5.0 s -
n8-48 [Pull-In
Current (for PM
Motors)]
Increase the setting value in increments of 5%. 30% -
n8-55 [Load Inertia]
Increase the setting value.
Note:
When operating a single motor or with a minimum amount of
inertia, setting this value too high can cause motor
oscillation.
0
Near the actual load
inertia ratio.
Hunting or oscillation
n8-45 [SpdFbck
Det.Gain]
Increase the setting value in increments of 0.05. 0.80 -
The drive detects STPo [Motor Step-Out
Detected] fault when the load is not too
high.
•
E5-09 [PM
BackEMF Vpeak
(mV/(rad/ s))]
•
E5-24 [PM
BackEMF L-L
Vrms (mV/rpm)]
• Adjust the setting value.
• Examine the motor code on the motor nameplate or the data
sheet, then set correct values for
E5-09 or E5-24 .
*1
•
Yaskawa motor
Set the motor
code from the
motor nameplate.
• Motor from
another
manufacturer
Set the values
from the test
report.
The drive detected stalling or STPo [Motor
Step-Out Detected] at high speed and
maximum output voltage.
n8-62 [Output Volt
Limit Level]
Set to a value lower than the actual input voltage.
• 200.0 V
• 400.0 V
-
*1 The default setting changes when the settings for E5-01 [PM Mot Code Selection] and o2-04 [Drive KVA Selection] change.