Calibrating The Belt Speed; Calculation Scheme For The Automatic Dispensing Speed Adjustment - Novexx Solutions ALX 73 Series Service Manual

04/13 Rev. 5.07-00

Calibrating the belt speed

Aftercalling (LMA)
If the actual belt speed is known, the measured speed can be synchronised with it as
follows:

played matches the actual speed.
Calculation scheme for the automatic dispensing speed
adjustment
input
sensor pulses
wheel diameter
step mode (1/2/4)
gear ratio
max speed
limits
max frequency
min resolution
run length counter
calculation
wheel circumference
max speed
resolution
frequency
max distance
[84] Example calculation with the Excel calculator.
The file „APSF.xls" contains a calculation sheet for the purpose of calculating or
checking encoder data [84].
Using the calculation

sheet
Requires Microsoft Excel or a compatible spread sheet program.
The file is contained on the labeller documentation CD in the folder „/utilities".

In the rightmost column appear warning notes, if questionable values are entered
[84B].
SERVICE MANUAL
MACHINEN SETUP > Encoder Diameter
Encoder Diameter
x.x yy.y var
• x.x = diameter of measuring wheel
• yy.y = belt speed according to current measurement
• var = indicates variable belt speed
Increase or decrease the diameter of the measuring wheel until the belt speed dis-
p =
d =
m =
g =
v =
f (limit) =
x (limit) =
c (limit) =
U =
v =
x =
f =
a =
A Input fields
B Warning notes for dubious inputs
C Limits
D Calculated values
E Warning notes for dubious inputs
Open the file „APSF.xls" [84].
Enter the parameters of the configuration into the input fields [84A].
ALX 73x
500 pulses/rotation
63,7 mm
4 steps/pulse
1
40 m/min
20000 Hz
0,20 mm
32767 steps
200,0 mm
667 mm/s
0,10 mm
1667 Hz
3277 mm
Installing APSF
the following is displayed:
ok
ok
ok
direct
ok
ok
ok
44
B
A
C
D
E