Lenze TCF Series - Manual (Page 72)

B.5 DESCRIPTION OF ASSERTION LEVEL FAULTS
Along with the "A1" fault described above, there are a few other faults associated with the
drive's assertion level . Refer to the following table .
FAULT DESCRIPTION, CAUSES & REMEDIES
AL
Internal
AL
Occurs whenever the internal assertion level setting has been changed,
regardless of the cause . This fault can be cleared by giving the drive a STOP
command .
A1
EPM
AL
The assertion level setting stored in the EPM does not match the internally
stored setting . Refer to Appendix B, section B .4 .
A2
OEM AL
stored in
EPM
Occurs if the OEM Defaults assertion level stored on the EPM does not match
the internally stored setting, and an attempt is made to select setting “02” or
“03” in Parameter 48 -PROGRAM SELECTION . This fault can be cleared by
giving the drive a Stop command . To prevent this fault, install an EPM with the
correct OEM Defaults settings .
A3
Internal
AL
Corrupt
Occurs if the internally stored assertion level setting is corrupted . In this case,
the assertion level will default to active-high (P79 = “01”) . This fault can be
cleared by performing a reset using Parameter 48 - PROGRAM SELECTION,
or by installing an EPM that was just programmed with the desired assertion
level using the EPM Programmer (refer to NOTE 1 in Appendix B, section
B .3 .2) .
A4
Control
Board
Failure
“A4” indicates a failure on the control board . A new control board is required .
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