8400 StateLine C | Reference manual
Motor control (MCTRL)
Monitoring
242 L Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011
5.12.7 Mains phase failure monitoring
The drive controller has a simple mains-phase failure detection function with which a
mains phase failure can be detected under load.
In the case of power-adapted machines, approx. 50 % of the rated motor power must
be exceeded so that a main-phase failure can be detected.
If the mains phase failure monitoring is tripped:
– The error response set in C00565
will be carried out (Lenze setting: "Warning").
–The "Su02: One mains phase is missing
" error message will be entered into the
logbook.
–The bMctrlMainsFault status output of the LS_DeviceMonitor
system block will be
set to TRUE.
5.12.8 Maximum current monitoring
The ultimate motor current to be parameterised in C00939
is a limit value to protect the
motor from destruction, influence of the rated data and demagnetisation.
This limit value must not be travelled cyclically in the drive process.
If the instantaneous value of the motor current exceeds the limit value set in C00939
,
the error response "Fault" occurs to protect the motor and the error message "OC7:
Motor overcurrent" is entered into the logbook.
The maximum currents to be parameterised in C00022
and C00023 should have a
sufficient distance to this limit value.
Stop!
Under load, the mains input of a three-phase controller can be destroyed if the
device is only supplied by two phases (e.g. if a mains phase fails).
Note!
If a Lenze motor is selected from the catalogue whose plant parameters are
transferred into the controller, the settings in C00022
and C00023 will
automatically be adapted to the selected motor.
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