
7.10 Troubleshooting Without Fault Display
SIEPYEUOQ2A01G AC Drive Q2A Technical Manual
313
◆
Motor Rotation Causes Unexpected Audible Noise from Connected Machinery
Causes
Possible Solutions
The carrier frequency and the resonant frequency of the connected
machinery are the same.
•
Adjust
C6-02, C6-03, C6-04, and C6-05 [Carrier Frequency Selection, Carrier Upper
Frequency Limit, Carrier Lower Frequency Limit, and Carrier Freq Proportional Gain]
.
•
Set
C6-02 = 1 to 6 [Carrier Frequency Selection = Frequency other than Swing PWM]
.
Note:
If
C6-02 = 7 to A [Carrier Frequency Selection = Swing PWM]
, the user will not know if the
noise comes from the drive or the machine.
The drive output frequency and the resonant frequency of the connected
machinery are the same.
•
Adjust
d3-01, d3-02, d3-03, and d3-04 [Jump Frequency 1, Jump Frequency 2, Jump
Frequency 3, and Jump Frequency Width]
.
•
Put the motor on a rubber pad to decrease vibration.
◆
Motor Rotation Causes Oscillation or Hunting
Causes
Possible Solutions
The frequency reference is assigned to an external source, and there is
electrical interference in the signal.
Make sure that electrical interference does not have an effect on the signal lines.
•
Isolate control circuit wiring from main circuit wiring.
•
Use twisted-pair cables or shielded wiring for the control circuit.
•
Increase the value of
H3-13 [An.In FilterTime Constant]
.
The cable between the drive and motor is too long.
•
Do Auto-Tuning.
•
Make the wiring as short as possible.
The PID parameters are not sufficiently adjusted.
Adjust
b5: PID CONTROL
parameters.
◆
PID Output Fault
Causes
Possible Solutions
There is no PID feedback input.
•
Examine the MFAI terminal settings.
•
See if
H3-02, H3-10, H3-06 = F [AI1 Function Selection, AI2 Function Selection, AI3
Function Selection = PID Fbk]
is set.
•
Make sure that the MFAI terminal settings agree with the signal inputs.
•
Examine the connection of the feedback signal.
•
Make sure that
b5: PID CONTROL
is set correctly.
Note:
If there is no PID feedback input to the terminal, the detected value is 0, which causes a PID
fault and also causes the drive to operate at maximum frequency.
The detection level and the target value do not agree.
Use
H3-03, H3-11, and H3-07 [AI1 Gain Setting, AI2 Gain Setting, and AI3 Gain Setting]
to
adjust PID target and feedback signal scaling.
Note:
PID control keeps the difference between the target value and detection value at 0. Set the
input level for the values relative to each other.
Reverse drive output frequency and speed detection. When output frequency
increases, the sensor detects a speed decrease.
Set
b5-09 = 1 [PID Output Level Selection = Reverse output]
.
◆
The Starting Torque Is Not Sufficient
Causes
Possible Solutions
Auto-Tuning has not been done in vector control method.
Do Auto-Tuning.
The control method was changed after doing Auto-Tuning.
Do Auto-Tuning again.
Stationary Auto-Tuning for Line-to-Line Resistance was done.
Do Rotational Auto-Tuning.
◆
The Motor Rotates after the Drive Output Is Shut Off
Causes
Possible Solutions
DC Injection Braking is too low and the drive cannot decelerate correctly.
•
Increase the value set in
b2-02 [DCI Braking Current]
.
•
Increase the value set in
b2-04 [DCInj Time@Stop]
.
The stopping method makes the drive coast to stop.
Set
b1-03 = 0 or 2 [Stopping Method Selection = Ramp->Stop, DC Inj->Stop]
.
Содержание Q2A
Страница 2: ...This Page Intentionally Blank 2 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 12: ...12 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 18: ...i 2 Legal Information 18 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 28: ...1 2 Features and Advantages of Control Methods 28 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 64: ...2 9 Installation Methods 64 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 166: ...4 9 Test Run Checklist 166 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 172: ...5 2 European Standards 172 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 173: ...Standards Compliance 5 5 2 European Standards SIEPYEUOQ2A01G AC Drive Q2A Technical Manual 173...
Страница 174: ...5 2 European Standards 174 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 175: ...Standards Compliance 5 5 2 European Standards SIEPYEUOQ2A01G AC Drive Q2A Technical Manual 175...
Страница 176: ...5 2 European Standards 176 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 258: ...6 2 Modbus Communications 258 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 356: ...8 7 Storage Guidelines 356 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 357: ...SIEPYEUOQ2A01G AC Drive Q2A Technical Manual 357 9 Disposal 9 1 Safety Precautions 358 9 2 Disposal Instructions 359...
Страница 360: ...9 2 Disposal Instructions 360 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...
Страница 526: ...11 20 Parameters Changed by PM Motor Code Selection 526 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual...