3.11 Problems that Can Frequently Occur during Setup and Possible Solutions
YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
235
◆
Accelerates Despite a Heavy Load When Using the Light-Load Acceleration 2
Function
Causes
Possible Solutions
The settings in
S4-09 [L-L 2 Motoring Limit Start Level]
and
S4-10 [L-L 2
Motoring Hold Level]
are too high.
Decrease the setting value of
S4-09
and
S4-10
.
◆
No Acceleration Despite a Light Load When Using the Light-Load Acceleration
2 Function
Causes
Possible Solutions
Light-load Acceleration 2 is not enabled.
Enable Light-load Acceleration 2 by one of the following ways.
•
Set
H1-xx = 36 [MFDI Function Selection = Light-load Acceleration 2 Enabled]
, and have
that terminal switch ON.
•
Set
S4-01 = 2 [Light-load Accel Ctrl Selection = Light-load Accel Ctrl 2 enabled]
.
The settings in
S4-09 [L-L 2 Motoring Limit Start Level]
and
S4-10 [L-L 2
Motoring Hold Level]
are too low.
Increase the setting value of
S4-09
and
S4-10
.
Note:
Refer to
“
Light-load Acceleration 2 Function
”
on page
for more information about Light-load Acceleration 2.
◆
Excessive Motor Oscillation and Erratic Rotation
Causes
Possible Solutions
Poor balance between motor phases.
•
Check drive input power voltage to ensure that it provides stable power.
•
Set
L8-05 = 0 [Input Phase Loss Protection Sel = Disabled]
.
The hunting prevention function is disabled.
•
Set
n1-01 = 1 [Hunting Prevention Selection = Enabled (Normal)]
.
•
Increase the value of
n2-01 [Automatic Freq Regulator Gain(F)]
or
n2-02 [Automatic Freq
Regulator Time 1]
.
◆
Oscillation Occurs When Lowering in a Hoist/Lowering Crane Without a
Counterweight
Causes
Possible Solutions
The setting value of
S1-20 [Operation in Reverse]
is not correct.
Set
S1-20 = 1 [Regen operation in reverse]
.
◆
Oscillation Occurs When Lowering in a Hoist/Lowering Crane With a
Counterweight or With a Traverse Crane
Causes
Possible Solutions
The setting value of
S1-20 [Operation in Reverse]
is not correct.
Set
S1-20 = 1 [Regen operation in reverse]
.
◆
Unexpected Noise from Connected Machinery Occurs When Motor Rotates
Causes
Possible Solutions
The carrier frequency is at the resonant frequency of the connected
machinery.
•
Adjust
C6-02 to C6-05 [Carrier Frequency]
.
•
Set
C6-02 = 1 to 6
and check whether the abnormal noise continues.
The drive output frequency is the same as the resonant frequency of the
connected machinery.
•
Adjust
d3-01 to d3-04 [Jump Frequency]
.
•
Place the motor on a rubber pad to decrease vibration.
◆
Oscillation or Hunting Occurs When Motor Rotates
Causes
Possible Solutions
The frequency reference is set to an external source and the signal is noisy.
Ensure that noise is not affecting the signal lines.
•
Separate main circuit wiring and control circuit wiring.
•
Use twisted-pair cables or shielded wiring for the control circuit.
•
Increase the value of
H3-13 [Analog Input FilterTime Constant]
.
The cable between the drive and motor is too long.
•
Perform Auto-Tuning.
•
Make the wiring as short as possible.
Содержание CR700
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Страница 244: ...3 13 Test Run Checklist 244 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 422: ...7 7 Storage Guidelines 422 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 426: ...8 2 Disposal Instructions 426 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
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