YASKAWA
TOEPC71061782C GA800 Drive Installation & Primary Operation
83
Code
Name
Causes
Possible Solutions
EF0
Option Card External Fault
The communication option received an external fault
from the controller.
1.
Find the device that caused the external fault and remove the
cause.
2.
Clear the external fault input from the controller.
EF1
External Fault (Terminal S1)
MFDI terminal S1 caused an external fault through an
external device.
1.
Find the device that caused the external fault and remove the
cause.
2.
Clear the external fault input in the MFDI.
EF2
External Fault (Terminal S2)
MFDI terminal S2 caused an external fault through an
external device.
1.
Find the device that caused the external fault and remove the
cause.
2.
Clear the external fault input in the MFDI.
EF3
External Fault (Terminal S3)
MFDI terminal S3 caused an external fault through an
external device.
1.
Find the device that caused the external fault and remove the
cause.
2.
Clear the external fault input in the MFDI.
EF4
External Fault (Terminal S4)
MFDI terminal S4 caused an external fault through an
external device.
1.
Find the device that caused the external fault and remove the
cause.
2.
Clear the external fault input in the MFDI.
EF5
External Fault (Terminal S5)
MFDI terminal S5 caused an external fault through an
external device.
1.
Find the device that caused the external fault and remove the
cause.
2.
Clear the external fault input in the MFDI.
EF6
External Fault (Terminal S6)
MFDI terminal S6 caused an external fault through an
external device.
1.
Find the device that caused the external fault and remove the
cause.
2.
Clear the external fault input in the MFDI.
EF7
External Fault (Terminal S7)
MFDI terminal S7 caused an external fault through an
external device.
1.
Find the device that caused the external fault and remove the
cause.
2.
Clear the external fault input in the MFDI.
EF8
External Fault (Terminal S8)
MFDI terminal S8 caused an external fault through an
external device.
1.
Find the device that caused the external fault and remove the
cause.
2.
Clear the external fault input in the MFDI.
Err
EEPROM Write Error
There was a problem with the EEPROM hardware.
•
Re-energize the drive.
•
If the fault stays, replace the control board or the drive. Contact
Yaskawa or your nearest sales representative to replace the
board.
FAn1
Drive Cooling Fan Fault
The cooling fan stopped operating correctly.
•
Examine cooling fan operation.
•
Re-energize the drive.
•
Examine
U4-03 [Cooling Fan Ope Time]
and
U4-04 [Cool Fan
Maintenance]
. If the performance life of the cooling fan is
expired or if there is damage to the fan, replace the fan.
FbH
Excessive PID Feedback
The
FbH
detection level is set incorrectly.
Adjust
b5-36 [PID High Feedback Detection Lvl]
and
b5-37 [PID
High Feedback Detection Time]
.
FbL
PID Feedback Loss
The
FbL
detection level is set incorrectly.
Adjust
b5-13 [PID Feedback Loss Detection Lvl]
and
b5-14 [PID
Feedback Loss Detection Time]
.
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.
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.
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.
LSo
Low Speed Motor Step-Out
The motor code set incorrectly.
•
Set
E5-01 [PM Motor Code Selection]
correctly as specified by
the motor.
•
For specialized motors, refer to the motor test report and set
E5-
xx
correctly.
The load is too large.
•
Decrease the load.
•
Replace the drive and motor with larger capacity models.
An external force on the load side caused the motor to
move at start.
Find and repair problems on the load side that cause the motor to
rotate from the load side.
