CRASH control programming 13
3.
CRASH CONTROL PROGRAMMING
The CRASH control must be intended as an ALARM signal that is given when the
grinding wheel collides against the workpiece or other devices and/or parts of the
grinder due to a malfunctioning or to a bad programming.
3.1
Programming procedure
Press the key , if present, to select the CRASH channel.
1.
Set the sensitivity on the potentiometer
1 approximately to the center of its
range (40-60) or to the same value
relative to the GAP control (in case of
dual channel units)
2.
Simulate a few cycles and all the possible machine conditions (grinding,
loading, unloading, dressing, etc) to identify the maximum noise condition
and adjust the sensitivity to have the displayed value just below 6.5 on the
graduated bargraph display of the E20N (triggering point of the command).
In case the above procedure leads to the definition of a CRASH limit value
which a much lower sensitivity than in the GAP programming, to have a
reliable crash control it may be necessary:
• to program the sensitivity on potentiometer 1 only 10-20% lower than for
gap control.
• disable the crash control in the normal machine conditions that exceed
the crash value.
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