Avery Dennison ALS 204, Service And Installation Manual

Page: 79 / 224

79
5 O
PERATION
5.1 A
UTOMATIC DISPENSING SPEED ADJUSTMENT
ALS
20X
256
5.1.8
Calculation scheme for the automatic dispensing speed adjustment
[83] Example calculation with the Excel calculator
A Input fields
B Warning notes for dubious inputs
C Limits
D Calculated values
E Warning notes for dubious inputs
The file „APSF.xls“ contains a calculation sheet for the
purpose of calculating or checking encoder data [83]].
Using the calculation sheet

Open the file „APSF.xls“ [83]].
– Requires Microsoft Excel or a compatible spread
sheet program.
– The file is contained on the labeller documentation
CD in the folder „/utilities“.

Enter the parameters of the configuration into the in-
put fields [83]A].
– In the rightmost column appear warning notes, if
questionable values are entered [83]B].

Read the calculation results [83]D].
– In the rightmost column appear warning notes, if
questionable values are entered [83]E].
Inputs
p: sensor pulses :
– Number of pulses, which delivers the rotary encoder
per rotation
– Typical values: 100 up to 5000 pulses/rotation
d: wheel diameter
– Diameter of the measuring wheel, or of the conveyor
drive wheel, depending on the mounting option of
the rotary encoder. See “Mounting the rotary enco-
der” on page 76.
– Typical values: up to 200 mm
m: step mode
Depending on the sensor features and the labeller
features and the choosen configuration, there are
three ways of counting the pulses of the rotary
encoder:
– m=1: each pulse is counted as one step (setting not
required with ALS 30x)
– m=2: each pulse is counted twice (rising and falling
edge) (Application: labeller in single-phase mode)
input
sensor pulses p = 500 pulses/rotation ok
wheel diameter d = 63,7 mm ok
step mode (1/2/4) m =
4
steps/pulse ok
gear ratio g = 1 direct
max speed v = 40 m/min ok
limits
max frequency f (limit) = 20000 Hz
min resolution x (limit) = 0,20 mm
run length counter c (limit) = 32767 steps
calculation
wheel circumference U = 200,0 mm
max speed v = 667 mm/s
resolution x = 0,10 mm ok
frequency f = 1667 Hz ok
max distance a =
3277
mm
A
C
D
B
E