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FAULT MESSAGES
FAULT DESCRIPTION POSSIBLE CAUSES
PWR SAG Power Sag fault: Control board Erratic AC line.
voltage is below tolerance.
A new control board has been Perform a factory reset using
installed that is different from the Parameter 65-PROGRAM.
previous version. This will update the software and
allow the fault to be reset.
LANGUAGE Language fault: Selected Defective language EEPROM.
language not present Language EEPROM (U11)
removed after programming.
EXTERNAL External fault: TB-13D is open Check setting of Parameter
or closed to TB-2, depending on 50-TB13D.
setting of Parameter 50 - TB13D. Check devices wired between
TB13D and TB-2.
DB ERROR Dynamic Brake fault: DB The DB duty cycle is too high,
circuit has sensed a resistor causing the resistors to overheat.
overload.
CONTROL Control Board fault: New Perform a factory reset using
software has been installed that Parameter 65-PROGRAM.
is different from the previous This will update the software and
version. allow the fault to be reset.
INTERNAL Internal fault: The micro- Electrical noise on control wiring.
INTERN (#) processor has sensed a problem. Defective microprocessor.
Blank Display The power supply has shut down. Check heatsink fans (if equipped).
(drive will not run) This can be the result of clogged Clear any obstructions. If they
or failed heatsink fans. are not clogged, contact the AC
Tech Service Department.
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