YASKAWA HV600 Technical Reference page 478

6.5 Faults
Code Name
Note:
• The drive detects this error if the difference between the detected speed and the speed reference is more than the setting of F1-10 for longer than F1-11.
• Do a Fault Reset to clear the fault.
• If the drive detects this error, the drive will operate the motor as specified by the stopping method set in F1-04 [Speed Deviation Detection Select].
Code Name
DIFF Differential Feedback Exceeded
Note:
Do a Fault Reset to clear the fault.
Code Name
dv7 Polarity Judge Timeout
Note:
• The drive detects this error if it cannot detect polarity in a pre-set length of time.
• Do a Fault Reset to clear the fault.
Code Name
EF0 Option Card External Fault
Note:
• The drive detects this fault if the alarm function on the external device side is operating.
• 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 F6-03 [Comm External Fault (EF0) Select].
Code Name
EF1 External Fault (Terminal S1)
Note:
Do a Fault Reset to clear the fault.
Code Name
EF2 External Fault (Terminal S2)
Note:
Do a Fault Reset to clear the fault.
Code Name
EF3 External Fault (Terminal S3)
Note:
Do a Fault Reset to clear the fault.
478
Causes
The holding brake is stopping the motor.
Causes
The difference between the PID Feedback and
Differential Level Source [H3-xx = 2D] is more than
the level set in Y4-18 [Differential Level] for the time
set in Y4-19 [Differential Lvl Detection Time].
Causes
There is a disconnection in the motor coil winding.
The screws on the drive output terminals are loose.
Causes
The communication option received an external fault
from the controller.
A programming error occurred on the controller side.
Causes
MFDI terminal S1 caused an external fault through an
external device.
The wiring is incorrect.
External Fault [H1-01 = 20 to 2B] is set to MFDI
terminal S1, but the terminal is not in use.
Causes
MFDI terminal S2 caused an external fault through an
external device.
The wiring is incorrect.
External Fault [H1-02 = 20 to 2B] is set to MFDI
terminal S2, but the terminal is not in use.
Causes
MFDI terminal S3 caused an external fault through an
external device.
The wiring is incorrect.
External Fault [H1-03 = 20 to 2B] is set to MFDI
terminal S3, but the terminal is not in use.
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Possible Solutions
Release the holding brake.
Possible Solutions
• Replace the feedback transducer or transducers.
• Make sure that the settings of Y4-18 [Differential Level] to Y4-20
[Differential Level Detection Sel] are correct.
Possible Solutions
Measure the motor line-to-line resistance and replace the motor if a
coil is disconnected.
Tighten the terminal screws to the correct tightening torque.
Possible Solutions
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input from the controller.
Examine the operation of the controller program.
Possible Solutions
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
Correctly connect the signal line to MFDI terminal S1.
Correctly set the MFDI.
Possible Solutions
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
Correctly connect the signal line to MFDI terminal S2.
Correctly set the MFDI.
Possible Solutions
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
Correctly connect the signal line to MFDI terminal S3.
Correctly set the MFDI.