Lenze MC3000 Series - Manual (Page 70)

66 13435743_EDBM301_v14 .0
82 MAX ALRM (PID MAXIMUM ALARM)
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 .
98 LANGUAGE (LANGUAGE SELECTION)
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 .
99 FAULT HISTORY
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:
3 OVERLOAD RUN
FAULT
NUMBER
FAULT
MESSAGE
DRIVE
STATUS
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 .