Assembly and commissioning
OPTIMUM
M A S C H I N E N - G E R M A N Y
15 / 06 / 2011
Page 20
Assembly and commissioning Digital position display DPA 2000/ DPA 2000S ; Version 2.1.2
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201
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3.4.3
Programming the DPA 2000S
When using the function „cutting constant“ the following settings of the parameters need to be
programmed:
(
„Internal parameter setting“ on page 5-36)
P19:
Please enter the number of switchings on the fork light barrier per revolution (e.g.
perforated disk with 8 holes = 8 switchings)
P20:
Enter the value „1“ (recommended)
NOTE:
The DPA 2000S supports two gear levels. Determine the two gear levels of your lathe in which
you want to use the cutting constant functions. All control values which you have set on the DPA
2000S are this way only referring to this gear level. For another gear level the modified transfor-
mation will lead to deviations between the target value and the actual value, in particular for
spindle speeds.
DANGER!
If the lathe is operated in another gear level, the admissible maximum speed can be
exceeded. This way, the retention force of the clamping devices will be reduced when the
centrifugal force is increasing. In doing so, the workpiece might get loose and fly off the
machine.
For your own safety use the cutting constant function only for the two selected gear
levels for which you have specified and entered the parameters.
To do so, determine the minimum and maximum speed of the selected gear levels.
Example:
Nominal speed of the gear level:
900 1/min
Set frequency range on the FC from 10 Hz to 50 Hz
Minimum speed for 10 Hz
180 1/min
Maximum speed for 50 Hz
900 1/min
P21:
Enter the value of the maximum speed for the selected gear level 1.
P22:
Enter the value of the minimum speed for the selected gear level 1.
P23:
Enter the value of the maximum speed for the selected gear level 2.
P24:
Enter the value of the minimum speed for the selected gear level 2.
When you have executed the above steps the commissioning of the DPA 2000S is terminated.
Switch over between the manual speed setting and the cutting constant control using the corres-
ponding ON/OFF switch. The two switch settings need to be marked by the function markings
which are being switched.
