10 E20
N
Operator’s Manual
2.
GAP CONTROL PROGRAMMING
The GAP cycle can be controlled with the definition of an appropriate ultrasonic limit
value; this limit must be empirically defined according to the characteristics of the
application.
At first the grinding wheel must be driven to rest position, normally spinning and with
the coolant off . The microphone is already mounted and connected to the E20N unit.
The noise displayed by the E20N LED bargraph in this particular condition is the
background noise which is a basic characteristic of the application.
The value of the displayed background noise can be:
• fairly stable and repetitive
• variable and oscillating.
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