YASKAWA GA50U Series - Page 96

13 Troubleshooting
96 YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation
Code Name Causes Possible Solutions
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.
The drive incorrectly detected the
motor magnetic pole position.
If you are using an IPM motor, do High
Frequency Injection Auto-Tuning.
nSE Node Setup Error
The H1-xx = 47 [Node Setup
(CANopen)] terminal was
activated during run.
The drive received a Run
command while the Node Setup
function was active.
Stop the drive when the Node Setup
function is in use.
oC Overcurrent
The load is too heavy. • Measure the current flowing into the
motor.
• Replace the drive with a larger capacity
model if the current value is more than
the drive rated current.
• Decrease the load or replace with a larger
drive to prevent sudden changes in the
current level.
Overheating caused damage to the
motor or the motor insulation is
not satisfactory.
Measure the motor insulation resistance, and
replace the motor if there is electrical
conduction or unserviceable insulation.
The motor main circuit cable is
contacting ground to make a short
circuit.
• Examine the motor main circuit cable for
damage, and repair short circuits.
• Measure the resistance between the
motor main circuit cable and the ground
terminal. If there is electrical conduction,
replace the cable.
A short circuit or ground fault on
the drive output side caused
damage to the output transistor of
the drive.
• Make sure that there is not a short circuit
in terminal B1 and terminals U/T1, V/
T2, and W/T3. Make sure that there is
not a short circuit in terminals - and
terminals U/T1, V/T2, and W/T3.
• If there is a short circuit, contact
Yaskawa or your nearest sales
representative.