YASKAWA HV600 Installation & Startup page 127

Code Name
Note:
• The drive detects this error if the DC bus voltage changes irregularly without regeneration.
• Do a Fault Reset to clear the fault.
• Use L8-05 to enable and disable PF detection.
Code Name
SC Short Circuit/IGBT Failure
Note:
• The drive detects this error if there is a short circuit or ground fault on the drive output side, or an IGBT failure.
• Do a Fault Reset to clear the fault.
Code Name
SCF Safety Circuit Fault
Note:
Do a Fault Reset to clear the fault.
Code Name
SEr Speed Search Retries Exceeded
Note:
• The drive detects this error if the number of speed search restarts is more than b3-19 [Speed Search Restart Attempts].
• Do a Fault Reset to clear the fault.
Code Name
STPo Motor Step-Out Detected
Note:
Do a Fault Reset to clear the fault.
Code Name
TiM Keypad Time Not Set
Note:
• Do a Fault Reset to clear the fault.
• Parameter o4-24 [bAT Detection Selection] enables and disables TiM detection.
YASKAWA TOEPYAIH6B01A HV600 AC Drive Narrow Bypass Installation & Startup
Causes
The main circuit capacitors have become
unserviceable.
Causes
Overheating caused damage to the motor or the motor
insulation is not satisfactory.
The motor main circuit cable is contacting ground to
make a short circuit.
A short circuit or ground fault on the drive output
side caused damage to the output transistor of the
drive.
Causes
The safety circuit is broken.
Causes
The speed search-related parameters are set
incorrectly.
The motor is coasting in the opposite direction of the
Run command.
Causes
The load is too large.
The acceleration/deceleration times are too short.
Causes
There is a battery in the keypad, but the date and time
are not set.
Possible Solutions
• 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.
Possible Solutions
Measure the motor insulation resistance, and replace the motor if
there is electrical conduction or unserviceable insulation.
• Examine the motor main circuit cable for damage, and repair
short circuits.
• Measure the resistance between the motor main circuit cable and
the ground terminal. If there is electrical conduction, replace the
cable.
• Make sure that there is not a short circuit in terminal B1 and
terminals U/T1, V/T2, and W/T3. Make sure that there is not a
short circuit in terminals - and terminals U/T1, V/T2, and W/T3.
• If there is a short circuit, contact Yaskawa or your nearest sales
representative.
Possible Solutions
Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.
Possible Solutions
• 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.
Set b3-14 = 1 [Bi-directional Speed Search = Enabled].
Possible Solutions
• Decrease the load.
• Replace the drive and motor with larger capacity models.
• Increase the values set in C1-01 to C1-04 [Acceleration/
Deceleration Times].
• Increase the value set in C2-01 [S-Curve Time @ Start of Accel].
Possible Solutions
Use the keypad to set the date and time.
5.5 Faults
5
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