CHAPTER 14: FAULT CODES AND DESCRIPTIONS
63-4528—04 254
ACI loss
1. Check the ACI wiring
2. Check if the ACI signal is less than 4mA
External Fault
1. Input EF (N.O.) on external terminal is closed to GND. Output
U, V, W will be turned off.
2. Give RESET command after fault has been cleared.
Emergency stop
1. When the multi-function input terminals MI1 to MI6 are set to
emergency stop, the VFD stops output U, V, W and the motor
coasts to stop.
2. Press RESET after fault has been cleared.
External Base Block
1. When the external input terminal (B.B) is active, the VFD
output will be turned off.
2. Deactivate the external input terminal (B.B) to operate the
VFD again.
Password is locked.
Keypad will be locked. Turn the power ON after power OFF to
re-enter the correct password. See Pr.00-07 and 00-08.
Software code error
Illegal function code
Check if the function code is correct (function code must be 03,
06, 10, 63)
Illegal data address (00H to
254H)
Check if the communication address is correct
Illegal data value Check if the data value exceeds max./min. value
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