Lenze AC Tech M3103S Installation & Operation Manual page 70

MAX ALRM
82
This parameter setting represents the value that the feedback signal (in PID mode) or
speed reference signal (in open-loop speed mode) must exceed to activate the MIN/MAX
ALARM output (refer to Parameters 52, 53, and 54) .
NOTE 1:
The MIN ALARM function can be used to start and stop the drive based on
the level of the speed reference signal or PID feedback signal . This is done
by wiring a 2-wire start/stop circuit through the drive's Form C relay or open-
collector output, and setting the Form C relay or open-collector output for
MIN/MAX (refer to Parameters 52, 53, and 54) . When the signal drops below
the MIN ALARM setting, the relay or open-collector output will de-energize,
which opens the start contact and stops the drive . When the signal is equal
to or greater than the MIN ALARM setting, the relay or open-collector output
will energize, which closes the start contact and starts the drive . The drive
must be in REMOTE mode to use the MIN/MAX function to start and stop
the drive .
NOTE 2:
When using the MIN and MAX ALARM functions in open-loop speed mode
(PID is disabled), parameter 74 - PID FB must still be set to match the speed
reference signal being used .
LANGUAGE
98
The MC Series drive can support other languages with the addition of an optional
LANGUAGE EEPROM chip installed in socket U11 on the control board of the drive . If the
EEPROM is not present, the default language will be ENGLISH . Also, this parameter is
not affected when the parameters are reset using Parameter 65 - PROGRAM . Therefore,
if a language other than ENGLISH is selected, it will remain in effect after a RESET .
FAULT HISTORY
99
The FAULT HISTORY stores the previous eight fault conditions that caused the drive to
trip . The information stored here is view-only, it cannot be altered . The FAULT HISTORY
can be used to determine if there is a pattern, or trend, to the faults, which may indicate a
problem in the system . Refer to Section 20 - TROUBLESHOOTING for more information
on faults .
The FAULT HISTORY indicates the number of the fault (number 1 is the most recent
fault), the fault message, and the status of the drive at the time of the fault . An example
is shown below:
In the example above, the third fault log is being viewed, which is an OVERLOAD fault
that occurred while the drive was in a RUN state .
66
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(PID MAXIMUM ALARM)
(LANGUAGE SELECTION)
FAULT FAULT
NUMBER MESSAGE
3 OVERLOAD RUN
M301L
DRIVE
STATUS