YASKAWA
TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
125
Code
Name
Causes
Possible Solutions
The output terminal screws of
the drive are loose.
Tighten the terminal screws to the correct
tightening torque.
There is not balance between
the three phases of the PM
motor impedance.
•
Measure the Line-to-Line Resistance
for each motor phase and make sure
that resistance is equal in the three
phases, and that all wires are
connected correctly.
•
Replace the motor.
The drive output circuit is
broken.
•
Re-energize the drive.
•
If the fault stays, replace the control
board or the drive. For information
about replacing the control board,
contact Yaskawa or your nearest sales
representative.
LSo
Low Speed Motor
Step-Out
The motor code set incorrectly.
•
Set
E5-01 [PM Motor Code
Selection]
correctly as specified by
the motor.
•
For specialized motors, refer to the
motor test report and set
E5-xx
correctly.
The load is too large.
•
Decrease the load.
•
Replace the drive and motor with
larger capacity models.
An external force on the load
side caused the motor to move
at start.
Find and repair problems on the load side
that cause the motor to rotate from the
load side.
The drive incorrectly detected
the motor magnetic pole
position.
•
Set
b3-01 = 1 [Speed Search at Start
Selection = Enabled]
.
•
If the value for
U6-57
[PolePolarityDeterVal]
is lower than
819, increase the value set in
n8-84
[Polarity Detection Current]
. Consult
the motor manufacturer for
information about maximum setting
values.
The setting of
n8-84 [Polarity
Detection Current]
is too low.
Increase the n8-84 setting from the
default. Consult the motor manufacturer
for information about maximum setting
values.
Incorrect values set in
L8-93
[Low Speed Pull-out
DetectionTime]
,
L8-94 [Low
Speed Pull-out Detect Level]
,
and
L8-95 [Low Speed Pull-out
Amount]
.
Increase the values set in
L8-93 to L8-95.