132
YASKAWA
TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
Code
Name
Causes
Possible Solutions
The electronic thermal protector
qualities and the motor overload
properties do not match.
•
Examine the motor qualities and set
L1-01 [Motor Overload (oL1)
Protection]
correctly.
•
Connect a thermal overload relay to
the motor.
The electronic thermal protector
is operating at an incorrect
level.
Set
E2-01 [Motor Rated Current (FLA)]
correctly to the value specified by the
motor nameplate.
There is increased motor loss
from overexcitation operation.
•
Lower the value set in
n3-13
[OverexcitationBraking (OEB) Gain]
.
•
Set
L3-04 ≠ 4 [Stall Prevention
during Decel ≠ Overexcitation/High
Flux]
.
•
Set
n3-23 = 0 [Overexcitation
Braking Operation = Disabled]
.
The speed search-related
parameters are set incorrectly.
•
Examine the settings for all speed
search related parameters.
•
Adjust
b3-03 [Speed Search
Deceleration Time]
.
•
Set
b3-24 = 1 [Speed Search Method
Selection = Speed Estimation]
after
Auto-Tuning.
Phase loss in the input power
supply is causing the output
current to change.
Make sure that there is no phase loss, and
repair problems.
The motor main circuit cable is
too long.
•
Replace the drive with a larger
capacity model.
•
Decrease
C6-02 [Carrier Frequency]
.
Or set
C6-02 = B
.
oL2
Drive Overload
The load is too large.
Decrease the load.
The acceleration/deceleration
times or cycle times are too
short.
•
Examine the acceleration/deceleration
times and the motor start/stop
frequencies (cycle times).
•
Increase the values set in
C1-01 to
C1-08 [Acceleration/Deceleration
Times]
.