YASKAWA CIPR-GA50UВ001AJ Series Installation & Primary Operation page 126

15 Troubleshooting
Code Name
nSE Node Setup Error
oC Overcurrent
126
Causes
The drive incorrectly detected
the motor magnetic pole
position.
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.
The load is too heavy.
Overheating caused damage to
the motor or the motor
insulation is not satisfactory.
The motor main circuit cable is
contacting ground to make a
short circuit.
A short circuit or ground fault
on the drive output side caused
damage to the output transistor
of the drive.
The acceleration time is too
short.
YASKAWA TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
Possible Solutions
If you are using an IPM motor, do High
Frequency Injection Auto-Tuning.
Stop the drive when the Node Setup
function is in use.
• 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.
Measure the motor insulation resistance,
and replace the motor if there is electrical
conduction or unserviceable insulation.
• 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.
• 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.
• Calculate the torque necessary during
acceleration related to the load inertia
and the specified acceleration time.
• Increase the values set in C1-01, C1-
03, C1-05, or C1-07 [Acceleration
Times] to get the necessary torque.
• Increase the values set in C2-01 to
C2-04 [S-Curve Characteristics] to
get the necessary torque.
• Replace the drive with a larger
capacity model.