YASKAWA GA800 Series, Техническое описание

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7.4 Fault
324 YASKAWA SIEPC71061737B GA800 Drive Technical Reference
Code Name Causes Possible Solutions
A fault occurred in the feedback input circuit of the
drive. Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.
Note:
•
The drive detects this fault if the PID feedback input is more than the level set in b5-13 for longer than b5-14 .
•
Do a Fault Reset to clear the fault.
•
If the drive detects this fault, it will operate the motor as specified by the stop method set in b5-12 [Feedback Loss Detection Select] .
Code Name Causes Possible Solutions
GF Ground Fault 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.
The motor main circuit cable is contacting ground to
make a short circuit. • 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.
An increase in the stray capacitance of the cable and
the ground terminal caused an increase in the leakage
current. • If the wiring length of the cable is more than 100 m, decrease the
carrier frequency.
•
Decrease the stray capacitance.
There was a problem with the drive hardware. Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.
Note:
•
The drive detects this fault if a current short to ground was more than 50% of rated current on the output side of the drive.
•
Do a Fault Reset to clear the fault.
•
L5-08 [Fault Reset Enable Select Grp2] disables the Auto Restart function.
Code Name Causes Possible Solutions
HLCE High Level Communication Errors Communication data error occurred between the
option and the master drive when you use Gateway
function.
The master drive detects oFxxx and the slave drive
detects HLCE .
Examine the wiring between the option and the master drive and
remove the cause of the fault.
Note:
This fault occurs when the drive is a slave drive in Gateway Mode [F6-16 ≠ 0] and communication is lost from the master.
Code Name Causes Possible Solutions
LF Output Phase Loss
The motor main circuit cable is disconnected. Connect motor main circuit cable wiring. Correct wiring errors in
the main circuit drive input power.
There is a disconnection in the motor coil winding. If a coil is disconnected, measure the motor Line-to-Line Resistance
and replace the motor.
The screws on the drive output terminals are loose. Tighten the terminal screws to the correct tightening torque.
The rated output current of the motor is less than 5%
of the drive rated current. Examine the drive capacity or the motor output to be applied.
You are trying to use a single-phase motor. The drive cannot operate a single-phase motor.
The output transistor in the drive is damaged. • 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.
Note:
• The drive detects this fault if phase loss occurs on the output side of the drive.
• Do a Fault Reset to clear the fault.
• Set L8-07 [Output Phase Loss Protection Sel] to enable and disable LF detection.
Code Name Causes Possible Solutions
LF2 Output Current Imbalance
Phase loss occurred in the wiring on the output side
of the drive. Examine for wiring errors or disconnected wires on the output side
of the drive, and repair problems.
The output terminal screws of the drive are loose. Tighten the terminal screws to the correct tightening torque.
There is not balance between the three phases of the
PM motor impedance.
•
Measure the Line-to-Line Resistance for each motor phase and
make sure that resistance is equal in the three phases, and that all
wires are connected correctly.
•
Replace the motor.
The drive output circuit is broken. • 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.
Note:
•
The drive detects this fault if there is not balance between the three phases of the output current from the PM motor.
•
Do a Fault Reset to clear the fault.