YASKAWA
TOEPC71061737D GA800 DRIVE INSTALLATION & PRIMARY OPERATION
147
Code
Name
Causes
Possible Solutions
If the drive detects
ov
in these conditions, the speed
search-related parameters are incorrect:
•
During speed search
•
During momentary power loss recovery
•
When the drive starts again automatically
•
When you use a premium efficiency motor
•
Examine the settings for all speed search related parameters.
•
Set
b3-19 ≠ 0 [Speed Search Restart Attempts ≠ 0 times]
.
•
Adjust
b3-03 [Speed Search Deceleration Time]
.
•
Do Stationary Auto-Tuning for Line-to-Line Resistance and then
set
b3-24 = 1 [Speed Search Method Selection = Speed
Estimation]
.
•
Use these values to adjust the parameters.
•
b3-03 [Speed Search Deceleration Time]
= default value × 2
•
L2-03 [Minimum Baseblock Time]
= default value × 2
•
L2-04 [Powerloss V/f Recovery Ramp Time]
= default value ×
2
The power supply voltage is too high.
Decrease the power supply voltage to match the drive rated voltage.
The braking resistor or braking resistor unit wiring is
incorrect.
Correct wiring errors in the connection to the braking resistor or
braking resistor unit.
The encoder cable is disconnected or wired
incorrectly.
Examine for wiring errors or disconnected wires in the encoder
cable, and repair problems.
Noise interference along the encoder cable.
Isolate the encoder cable from the drive output line or a different
source of electrical interference.
Electrical interference caused a drive malfunction.
•
Examine the control circuit lines, main circuit lines, and ground
wiring, and decrease the effects of electrical interference.
•
Make sure that a magnetic contactor is not the source of the
electrical interference, then use a Surge Protective Device if
necessary.
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.
You used the Short Circuit Braking function when
A1-02 = 5 [Control Method Selection = OLV/PM]
.
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, PE2
PLC Faults
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.
The encoder is not receiving power.
Examine the encoder power supply.
The holding brake is stopping the motor.
Release the holding brake.
PGoH
Encoder (PG) Hardware Fault
The encoder cable is disconnected.
Connect any disconnected wires in the encoder cable.