YASKAWA
TOEPC71061782C GA800 Drive Installation & Primary Operation
89
Code
Name
Causes
Possible Solutions
The load inertia is set incorrectly.
•
Examine the load inertia settings with KEB, overvoltage
suppression, or stall prevention during deceleration.
•
Adjust
L3-25 [Load Inertia Ratio]
to match the qualities of the
machine.
The Short Circuit Braking function used in OLV/PM
control method.
Connect a braking resistor to the drive.
There is motor hunting.
•
Adjust
n1-02 [Hunting Prevention Gain Setting]
.
•
Adjust
n2-02 [Automatic Freq Regulator Time 1]
and
n2-03
[Automatic Freq Regulator Time 2]
.
•
Adjust
n8-45 [Speed Feedback Detection Gain]
and
n8-47 [Pull-
in Current Comp Filter Time]
.
Speed Search at Start does not complete correctly
when:
•
A1-02 = 8 [Control Method Selection = EZOLV]
•
E9-01 = 0 [Motor Type Selection = Induction
(IM)]
Set
b3-24 = 2 [Speed Search Method Selection = Current Detection
2]
.
PE1
PLC Fault 1
The communication option detected a fault.
Refer to the manual for the communication option card.
PE2
PLC Fault 2
The communication option detected a fault.
Refer to the manual for the communication option card.
PF
Input Phase Loss
There is a phase loss in the drive input power.
Correct errors with the wiring for main circuit drive input power.
There is loose wiring in the drive input power
terminals.
Tighten the terminal screws to the correct tightening torque.
The drive input power voltage is changing too much.
•
Examine the input power for problems.
•
Make the drive input power stable.
•
If the input power supply is good, examine the magnetic
contactor on the main circuit side for problems.
There is unsatisfactory balance between voltage
phases.
•
Examine the input power for problems.
•
Make the drive input power stable.
•
Set
L8-05 = 0 [Input Phase Loss Protection Sel = Disabled]
.
The main circuit capacitors have become
unserviceable.
•
Examine the capacitor maintenance time in monitor
U4-05
[CapacitorMaintenance]
. If
U4-05
is more than 90%, replace the
control board or the drive. For information about replacing the
control board, contact Yaskawa or your nearest sales
representative.
•
If drive input power is correct and the fault stays, replace the
control board or the drive. For information about replacing the
control board, contact Yaskawa or your nearest sales
representative.
PGo
Encoder (PG) Feedback Loss
The encoder cable is disconnected or wired
incorrectly.
Examine for wiring errors or disconnected wires in the encoder
cable, and repair problems.
PGoH
Encoder (PG) Hardware Fault
The encoder cable is disconnected.
Connect any disconnected wires in the encoder cable.
rF
Braking Resistor Fault
The resistance of the dynamic braking option that is
connected to the drive is too low.
Use a dynamic braking option that fits the model and duty rating of
the drive.
rH
Braking Resistor Overheat
The deceleration time is too short and excessive
regenerative energy is flowing back into the drive.
•
Check the load level, deceleration time, and speed.
•
Decrease the load.
•
Increase the values set in
C1-02, C1-04, C1-06, or C1-08
[Deceleration Times]
.
•
Use a dynamic braking option that lets you use more power.
The duty cycle is too high.
Examine the duty cycle.
Note:
When
L8-01 = 1 [3% ERF DB Resistor Protection = Enabled]
,
the maximum braking duty cycle is 3%.
The braking load is too heavy.
•
Calculate the braking load and braking power again, and
decrease the braking load.
•
Use a braking resistor that improves braking power.
The braking resistor is not sufficient.
Use the braking resistor specifications to select a sufficient braking
resistor.
rr
Dynamic Braking Transistor Fault
The drive control circuit is damaged.
There is a malfunction in the internal braking
transistor of the drive.
•
Re-energize the drive.
•
If the fault stays, replace the control board or the drive. For
information about replacing the control board, contact Yaskawa
or your nearest sales representative.
SC
Short Circuit/IGBT Failure
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.
SCF
Safety Circuit Fault
The safety circuit is broken.
Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.