169
EDM Features (900E Only) (Continued)
First Spark Detection Setup allows you to define how you activate the EDM Mode. It
can be either manually activated or automatically activated if the DRO receives a signal
from a first spark detector. The position at which the first spark occurs is the Zero
position.
Z-Depth Guard allows you to track the depth of the erosion relative to the Zero position.
A relay will switch when the desired Z-depth is reached, to terminate the main sparking
cycle.
Spark Out allows you to specify an additional sparking cycle that allows sparking to
continue for a selectable period of time in order to obtain a quality finish.
SparkArrest
TM
is a safety feature that allows you to set a limiting distance above the
workpiece over which the DRO disables sparking. This can be used to avoid sparking if
the electrode should move in the wrong direction during the sparking cycle, well before
the electrode has moved out of the electrolyte.
You can set up the EDM features using the following F-codes:
q First Spark Detection Setup – F 46
q Relay 1 (Z-Depth Guard) – F 38
q Relay 2 (Spark Out/SparkArrest
TM
) Setup – F 39
Relay 1 is used to limit the movement of the Z-axis when the target Z-Depth is reached.
Relay 2 is used to turn off sparking, either after a preset Spark-Out time or if the
electrode rises over the SparkArrest
TM
limit.
You can enter the parameters for the sparking cycle using the following F-code:
q Entering Target Z-depth and Spark-Out time – F 37
Figure 6 illustrates the terms used in the following setup procedures for the EDM
features.
To Next Page
Loading...
