YASKAWA GA700 Series Technical Manual page 353

Code Name
EF6 External Fault (Terminal S6)
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name
EF7 External Fault (Terminal S7)
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name
EF8 External Fault (Terminal S8)
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name
EP24v External Power 24V Supply
Note:
• Set o2-26 [Ext. Power 24V Supply Display] to enable or disable EP24v detection.
• The drive will not output an alarm signal for this alarm.
Code Name
FAn Internal Fan Fault
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name
FbH Excessive PID Feedback
Note:
• The drive detects this fault if the PID feedback input is more than the level set in b5-36 for longer than b5-37.
• If detected, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
• 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
FbL PID Feedback Loss
YASKAWA SIEPC71061705H GA700 Series Technical Manual
Causes
MFDI terminal S6 caused an external fault through
an external device.
The wiring is incorrect.
External Fault [H1-06 = 2C to 2F] is set to MFDI
terminal S6, but the terminal is not in use.
Causes
MFDI terminal S7 caused an external fault through
an external device.
The wiring is incorrect.
External Fault [H1-07 = 2C to 2F] is set to MFDI
terminal S7, but the terminal is not in use.
Causes
MFDI terminal S8 caused an external fault through
an external device.
The wiring is incorrect.
External Fault [H1-08 = 2C to 2F] is set to MFDI
terminal S8, but the terminal is not in use.
Causes
The voltage of the main circuit power supply
decreased, and the 24 V power supply is supplying
power to the drive.
Causes
The circulation fan stopped operating correctly.
Causes
The FbH detection level is set incorrectly.
There is a problem with the PID feedback wiring.
The feedback sensor is not operating correctly.
A fault occurred in the feedback input circuit of the
drive.
Causes
The FbL detection level is set incorrectly.
There is a problem with the PID feedback wiring.
The feedback sensor is not operating correctly.
7.5 Minor Faults/Alarms
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 S6.
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 S7.
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 S8.
Correctly set the MFDI.
Possible Solutions
• Examine the main circuit power supply.
• Turn ON the main circuit power supply to run the drive.
Possible Solutions
• Examine circulation fan operation.
• Re-energize the drive.
• Examine U4-03 [Cooling Fan Ope Time] and U4-04 [Cool
Fan Maintenance]. If there is damage to the circulation fan or
if the performance life of the fan is expired, replace the fan.
Possible Solutions
Adjust b5-36 [PID High Feedback Detection Lvl] and b5-37 [PID
High Feedback Detection Time].
Correct errors with the PID control wiring.
Examine the sensors on the control device side.
Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.
Possible Solutions
Adjust b5-13 [PID Feedback Loss Detection Lvl] and b5-14 [PID
Feedback Loss Detection Time].
Correct errors with the PID control wiring.
Examine the sensors on the control device side.
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