Overload Protection - Mafell FM 800 Traduction De La Notice D'emploi Originale

5.3.1 Speed setting in PV design
In "portal mode", the position of the setting wheel X (Fig. 2) for the speed setting is ignored. The speed can
only be changed by the voltage at the pin "U
(Fig. 2), "portal mode" must first be deactivated by switching off the power supply at the pin "U
removing the PV control cable.
The correlation between speed and control voltage is illustrated in formulae (1) and (2).

5.4 Overload protection

To protect the milling motor, the operating parameters current, speed and temperature are dynamically
monitored and the power tool is switched off if necessary. Shortly before the overload protection is tripped, the
illumination of the setting wheel X (Fig. 2) changes to a permanent red (RD).
To put the milling motor back into operation, you must open and close power switch 5 (Fig. 1). The milling
motor goes into operation and the illumination of the setting wheel X (Fig. 2) changes to blue (BU).
5.4.1 Optical display of the remaining runtime
Triggering of the overload protection during operation leads to breakage of the milling tool, damage to the
workpiece or even damage to the portal system. You can prevent this by paying attention to the visual output
signals at the setting wheel X (Fig. 2).
As long as the milling motor is not overloaded in terms of performance, the setting wheel lights up permanently
in blue (BU).
If the milling motor is overloaded, the calculated remaining runtime is displayed flashing in red (RD). On page 6
(Fig. 7) you can see the temporal arrangement of the pulses in overload mode. The correlation between the
flashing behaviour and the associated remaining runtime is shown in the bottom table 4 on page 31.
If the remaining runtime is not sufficient for your application, reduce the load or feed rate to be able to switch
back to continuous operation.
5.4.2 Display of the remaining runtime in the PV design
If the milling motor is in "portal mode", the remaining runtime can be queried via the PV interface in addition to
the visual display.
The bottom table shows the correlation between the remaining runtime and the associated output variables.
". If you wish to set the speed by means of the setting wheel X
S
Danger
If you carry out any work on the working spindle after the overload protection has
triggered, the mains plug must first be removed.
-30-
" or by
PV