Lenze MC1000 Series - Manual (Page 79)

13435742_EDBM101_v24 75
FAULT MESSAGES
FAULT DESCRIPTION POSSIBLE CAUSES
PWR SAG Power Sag fault:
Control board voltage is below
tolerance.
A new control board has been
installed that is different from the
previous version.
Erratic AC line.
Perform a factory reset using
Parameter 65-PROGRAM.
This will update the software
and allow the fault to be reset
LANGUAGE Language fault:
Selected language not present
Defective language EEPROM.
Language EEPROM (U11)
removed after programming.
EXTERNAL External fault:
TB-13D is open or closed to TB-2,
depending on the setting of Param-
eter 50 - TB13D.
Check setting of Parameter
50-TB 13D
Check devices wired between
TB13D and TB-2.
DB ERROR Dynamic Brake fault:
DB circuit has sensed a resistor
overload.
The DB duty cycle is too
high, causing the resistors to
overheat.
CONTROL Control Board fault:
New software has been installed
that is different from the previous
version.
Perform a factory reset using
Parameter 65-PROGRAM.
This will update the software
and allow the fault to be reset.
INTERNAL
INTERN (#)
Internal fault:
The micro- processor has sensed a
problem.
Electrical noise on control
wiring.
Defective microprocessor.
FOLLOWER Loss of Follower fault:
4-20 mA signal at TB-5B is below
2 mA.
Parameter 55 - TB5B LOSS is
set to FAULT.
Blank display
or repeatedly
flashes
TESTING
(drive will not
run)
The power supply has shut down.
This can be the result of clogged or
failed heatsink fans.
Check heatsink fans (if
equipped).
Clear any obstructions. If they
are not clogged, contact the
Lenze AC Tech Service
Department.