CHAPTER 14: FAULT CODES AND DESCRIPTIONS
63-4528—04 252
Overload
The VFD detects excessive
drive output current.
1. Check if the motor is overloaded.
2. Take the next higher power VFD model.
Electronics thermal relay 1
protection
1. Check the setting of electronics thermal relay (Pr.06-14)
Take the next higher power VFD model
Electronics thermal relay 2
protection
1. Check the setting of electronics thermal relay (Pr.06-28)
2. Take the next higher power VFD model
These two fault codes will be
displayed when output
current exceeds the over-
torque detection level (Pr.06-
07 or Pr.06-10) and exceeds
over-torque detection (Pr.06-
08 or Pr.06-11) and it is set to
2 or 4 in Pr.06-06 or Pr.06-
09.
1. Check whether the motor is overloaded.
2. Check whether motor rated current setting (Pr.05-01) is
suitable
3. Take the next higher power VFD model.
Low current detection Check Pr.06-71, Pr.06-72, Pr.06-73.
Limit error
Internal EEPROM can not be
programmed.
1. Press “RESET” key to the factory setting
2. Return to the factory.
Internal EEPROM can not be
read.
1. Press “RESET” key to the factory setting
2. Return to the factory.
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