Lenze MC3000 Series - Manual (Page 76)

72 13435743_EDBM301_v14 .0
FAULT MESSAGES
FAULT DESCRIPTION POSSIBLE CAUSES
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 .
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
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 heatsinks are not clogged, contact
the Lenze AC Tech Service Department .