Chapter 6 Fault Code Information_VFD-B Series
6-4
Revision 10/2005, BE13, SW V4.08
Fault Name Fault Descriptions Corrective Actions
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 (setting 19 or 20), the AC motor
drive stops output U, V, W and the motor coasts to stop.
2. Press RESET after fault has been cleared.
Internal EEPROM can not be
programmed.
Return to the factory.
Internal EEPROM can not be
read.
Return to the factory.
U-phase error
V-phase error
W-phase error
OV or LV
Current sensor error
OH error
Return to the factory.
Software protection failure
Return to the factory.
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.
Auto accel/decel failure
1. Check if the motor is suitable for operation by AC motor
drive.
2. Check if the regenerative energy is too large.
3. Load may have changed suddenly.
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