YASKAWA
TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
139
Code
Name
Causes
Possible Solutions
SEr
Speed Search Retries
Exceeded
The speed search-related
parameters are set incorrectly.
•
Decrease
b3-10 [Speed Estimation
Detection Gain]
.
•
Increase
b3-17 [Speed Est Retry
Current Level]
.
•
Increase
b3-18 [Speed Est Retry
Detection Time]
.
•
Do Auto-Tuning again.
The motor is coasting in the
opposite direction of the Run
command.
Set
b3-14 = 1 [Bi-directional Speed
Search = Enabled]
.
STPo
Motor Step-Out
Detected
The motor code is set
incorrectly for PM Control
Methods.
•
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.
•
Increase the value set in
n8-55 [Motor
to Load Inertia Ratio]
.
•
Increase the value set in
n8-51 [Pull-
in Current @ Acceleration]
. If the
drive detects
STPo
during
deceleration when increasing the
value set in
n8-51
, set the value of
n8-
79 [Pull-in Current @ Deceleration]
lower than
n8-51
.
•
Decrease the load.
•
Replace the drive and motor with
larger capacity models.
The load inertia is too large.
Increase the value set in
n8-55
.
The acceleration/deceleration
times are too short.
•
Increase the values set in
C1-01 to
C1-08 [Acceleration/Deceleration
Times]
.
•
Increase the value set in
C2-01 [S-
Curve Time @ Start of Accel]
.
Speed response is too slow.
Increase the value set in
n8-55
.
TiM
Keypad Time Not Set
There is a battery in the keypad,
but the date and time are not set.
Use the keypad to set the date and time.
UL3
Undertorque
Detection 1
A fault occurred on the
machine.
Example: There is a broken
pulley belt.
Examine the machine and remove the
cause of the fault.
The parameters are incorrect for
the load.
Adjust
L6-02 [Torque Detection Level 1]
and
L6-03 [Torque Detection Time 1]
settings.