Lenze MCH Series - Manual (Page 81)

13435744_EDBMH01_v13 77
FAULT MESSAGES
FAULT DESCRIPTION POSSIBLE CAUSES
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 setting of Parameter
50 - TB13D
Check setting of Parameter 50.
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.
FLWR / SER Loss of Follower /
Loss of Serial fault:
4-20 mA signal at TB-5B is below
2 mA, or if serial control, serial link
was lost.
Parameter 55 - TB5B LOSS is
set to FAULT.
Parameter 56 - SERIAL LOSS is
set to FAULT.
Blank Display
or
repeatedly
flashes
TESTING
Power supply has shut down.
This can be the result of clogged or
failed heatsink fans.
Check heatsink fans (if drive is
equipped with them).
Clear any obstructions.
If heatsinks are not clogged,
contact the Lenze AC Tech Service
Department.