YASKAWA
TOEPC71061752B GA500 Drive Installation & Primary Operation
107
Code
Name
Causes
Possible Solutions
SEr
Speed Search Retries
Exceeded
The speed search-related
parameters are set incorrectly.
•
Decrease the value set in
b3-10 [Speed
Estimation Detection Gain]
.
•
Increase the value set in
b3-17 [Speed
Est Retry Current Level]
.
•
Increase the value set in
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.
UL4
Undertorque Detection
2
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
L6-05 [Torque Detection Level 2]
and
L6-06 [Torque Detection Time 2]
settings.
UL5
Mechanical Weakening
Detection 2
The drive detected undertorque as
specified by the conditions for
mechanical weakening detection
set in
L6-08 [Mechanical Fatigue
Detect Select]
.
Examine the machine for deterioration.