OPTIMUM
M A S C H I N E N - G E R M A N Y
Assembly and commissioning
15 / 06 / 2011
Page 17
Assembly and commissioning Digital position display DPA 2000/ DPA 2000S ; Version 2.1.2
©
201
1
GB
CAUTION!
Only use path-measuring systems recommended by OPTIMUM. When assembling the
path-measuring systems imperatively follow the instructions of the manufacturer.
Before mounting it on the machine, check the operability of the measuring gauges. To do so,
use the digital position display DPA 2000S or a similar device.
Install the measuring gauge in a way that it will not be damaged by cutting tools or coolants.
If required, mount a cover.
If possible, mount the enclosed measuring gauges with the sealing lips showing downward.
If possible, place the reading head stationary in order to avoid damages of the connection
lines by its movements.
CAUTION!
The path-measuring system and its add-on pieces can cover important components on the ma-
chine tool (e.g. lubricating nipples).
Before mounting the path-measuring systems, please note such limitations in functions and
make arrangements accordingly.
3.3.4
Assembly of the reading head
Mount a fixture for the reading head.
Fix the reading head to the fixture.
Remove possibly existing assembly aids from the reading head.
Check the orientation of the reading head using a dial gauge
(refer to the tolerances for the assembly given by the manufacturer).
Check if all components are moving freely.
3.4
Linking the position display to a frequency converter
The position display DPA 2000S is equipped with the function „cutting constant“ which allows to
influence the spindle speed of a lathe in a way that the same cutting speed will result at the wor-
king point of the tool independent from the workpiece radius.
To do so, the control of the DPA 2000S will directly influence the frequency converter (FC).
We mainly use frequency converters of the manufacturer LENZE for OPTIMUM lathes.
Therefore, we will explain the linking of the DPA 2000S to this frequecy converter in detail below.
3.4.1
System requirements:
To operate only using the function „cutting constant“ a frequency converter (FC) having an
analog input 0 V - 10 V DC is required.
For an operation using the function „cutting constant“ for remaining options of the manual speed
regulation, a frequency converter with two analog inputs is required:
0 V - 10 V DC for speed control via DPA 2000S (cutting constant control)
0 V -
0
5 V DC for speed control via the potentiometer
The following items are required in addition:
ON/OFF switch to switch over between the manual speed setting and the cutting constant
control
