Retsch RM 200 - Manual (Page 28)

11/6/2012 28  Retsch GmbH 0002
Safety functions and fault displays
Safety functions
F1 - Overloading
In order to prevent overloading of the drive motor and
resulting danger to the operator the RM200 is provided with a
load control.
This continuously measures the actual motor load and
indicates this in the load control display. In case of overloading
the load control switches off the machine in good time and
guarantees a cooling time. This is indicated to the operator by
the alternately flashing display F1 and the remaining cooling
time, e.g. 03 = 3 minutes.
After the cooling time has elapsed it is only necessary to
switch the machine off and on again to operate it normally
again.
F4 – Hood open
If the hood is open the drive should not run. This serves to
protect the operator from injury. If the hood is opened while
the machine is running the drive is immediately switched off
by the controller and “F4” appears in the display. If the start
button is pressed with the hood open in order to start the
milling operation F4 is also displayed and the drive is not
started.
This signal can be deleted by pressing the stop button.
F5 –Keyboard control
If one or more buttons are accidentally pressed for longer than
15 seconds the drive is switched off by the controller and F5 is
displayed.
This function is intended to prevent unintentional faulty
operation if an object accidentally presses on the keyboard.
In order to delete this fault signal switch the machine off and
on again once.
F6 – Switch control for hood switch
If the switch which controls hood opening has a lead defect
this is recognised by the controller and causes the machine to
be switched off. “F6” appears in the display. To remedy this
fault repairs by an authorised Retsch service technician are
required.
F1
03
F4
F5
F6