492
YASKAWA
SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Code
Name
Causes
Possible Solutions
ov
Overvoltage
Deceleration time is too short and regenerative energy
is flowing from the motor into the drive.
•
Set
L3-04 = 1 [Stall Prevention during Decel = General
Purpose]
.
•
Increase the values set in
C1-02 or C1-04 [Deceleration Times]
.
•
Do Deceleration Rate Auto-Tuning.
The acceleration time is too short.
•
Make sure that sudden drive acceleration does not cause the
fault.
•
Increase the values set in
C1-01 or C1-03 [Acceleration Times]
.
•
Increase the value set in
C2-02 [S-Curve Time @ End of Accel]
.
•
Set
L3-11 = 1 [Overvoltage Suppression Select = Enabled]
.
The drive output cable or motor is shorted to ground
(the current short to ground is charging the main
circuit capacitor of the drive through the power
supply).
1.
Examine the motor main circuit cable, terminals, and motor
terminal box, and then remove ground faults.
2.
Re-energize the drive.
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 do rotational Auto-Tuning
•
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]
setting.
•
Do Stationary Auto-Tuning for Line-to-Line Resistance and then
set
b3-24 = 1 [Speed Search Method Selection = Speed
Estimation]
.
•
Increase the value set in
L2-04 [Powerloss V/f Recovery Ramp
Time]
.
The power supply voltage is too high.
Decrease the power supply voltage to align with the drive rated
voltage.
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 overvoltage suppression or
stall prevention during deceleration.
•
Adjust
L3-25 [Load Inertia Ratio]
to align with the qualities of
the machine.
There is motor hunting.
Adjust
n1-02 [Hunting Prevention Gain Setting]
settings.
Note:
•
The drive detects this error if the DC bus voltage is more than the
ov
detection level while the drive is running.
•
The
ov
detection level is approximately 410 V for 208/240 V bypasses. The detection level is approximately 820 V for 480 V bypasses.
•
Do a Fault Reset to clear the fault.
•
Parameter
L5-08 [Fault Reset Enable Select Grp2]
disables the Auto Restart function.
Code
Name
Causes
Possible Solutions
ov2
DC Bus Overvoltage 2
The wiring is too long and DC bus voltage is too
large.
•
Shorten the shielded motor cable.
•
Decrease the carrier frequency.
•
If the power supply has a neutral ground, switch on the internal
EMC filter.
Note:
•
The drive detects this fault when the DC bus voltage increases to more than the Stall Prevention Level during Deceleration for the time set in
S6-23 [OV2 Detect Time]
.
•
Do a Fault Reset to clear the fault.
•
This fault is resettable, but will not auto-restart.
Code
Name
Causes
Possible Solutions
PE1, PE2
PLC Faults
The communication option detected a fault.
Refer to the manual for the communication option card.
Note:
Do a Fault Reset to clear the fault.
Code
Name
Causes
Possible Solutions
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]
.
Summary of Contents for H6B1A002
Page 12: ...12 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
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Page 454: ...5 14 Z Bypass Parameters 454 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
Page 590: ...8 6 Storage Guidelines 590 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
Page 780: ...11 3 European Standards 780 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
