6.5 Minor Faults/Alarms
366 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Code Name Causes Possible Solutions
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.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S1.
External fault [H1-01 = 2C to 2F] is set to MFDI
terminal S1, but the terminal is not in use.
Correctly set the MFDI.
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-05 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name Causes Possible Solutions
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.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S2.
External fault [H1-02 = 2C to 2F] is set to MFDI
terminal S2, but the terminal is not in use.
Correctly set the MFDI.
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-05 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name Causes Possible Solutions
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.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S3.
External fault [H1-03 = 2C to 2F] is set to MFDI
terminal S3, but the terminal is not in use.
Correctly set the MFDI.
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-05 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name Causes Possible Solutions
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.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S4.
External fault [H1-04 = 2C to 2F] is set to MFDI
terminal S4, but the terminal is not in use.
Correctly set the MFDI.
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-05 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name Causes Possible Solutions
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.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S5.
External fault [H1-05 = 2C to 2F] is assigned to
MFDI terminal S5 that is not in use.
Correctly set the MFDI.
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-05 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name Causes Possible Solutions
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.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S6.
External fault [H1-06 = 2C to 2F] is assigned to
MFDI terminal S6 that is not in use.
Correctly set the MFDI.
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-05 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name Causes Possible Solutions
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.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S7.
External fault [H1-07 = 2C to 2F] is assigned to
MFDI terminal S7 that is not in use.
Correctly set the MFDI.
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-05 = 10 [MFDO Function Select = Alarm] will be ON.
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