11 Maintenance and servicing
SCHMIDT
®
PressControl 3000 – V1.3
54
11.3 Adjusting the stroke offset
After work has been performed on the stroke sensors, the reference marker
on the scale are rarely at the original location. This offset must be
compensated. You can set this value using the stroke offset.
When the ram is in the "TDC" position, the "Output 2" view of the data output
must not exhibit a negative stroke. The value 603 corresponds to the zero
point in the control. If, therefore, a value smaller than 603 is displayed, it is
considered a negative stroke.
A stroke offset of 1 to 1.5 mm is set ex works. The system requires this
value to be in the range between 0 and 3 mm. If the value is outside this
range, the stroke offset must be set again and tolerances that have already
been set may have to be adjusted.
Select the "Data Input" system function key.
Select parameter 59, "Offset Stroke". Using the "Left" and "Right" cursor
keys, you can jump from on block of 10 to the next.
Enter the value "0" as new stoke offset.
Select View 2 of the data output.
Servic
...
...
CtrOFF
CtrON
1
0 N
.000 mm
.000 mm
0 N
0 N
0 N
600.558 mm
0 inc
65278 inc
19 inc
0 N
Desired range str.tol2
Desired range str.tol1
Average force wind.F4
Average force wind.F3
Average force wind.F2
Average force wind.F1
Offset force
Increment stroke
Increment force
Stroke
Force
Dataset 1
( )
2
Figure 11-4: View of "Output 2"
Write down the stroke displayed (e.g. 600.558 mm).
Subtract the value "1" from this value (e.g. . 600.558 – 1 = 599. 558).
Enter the calculated value in parameter 59 "Offset stroke".
1
CtrON
CtrOFF
...
...
Servic
599.558 mm
1 inc
1 inc
50 inc
50 inc
5 kN
.000
59 Offset stroke
58 Aq. distance PDA stroke
57 Aq. distance PDA force
56 Adm. offsetdrift neg.
55 Adm. offsetdrift pos.
54 Sensor type
53
52 TDC signal (I1.4) pres.
51 BDC signal (I1.3) pres.
50 Bend up (mm/kN)
0
0
Input Dataset 1
Figure 11-5: Enter the "Offset stroke"
