Lika DRAW WIRE SFA-10000 Series, User Manual

Page: 58 / 72

SFA-5000 • SFA-10000 Profibus
Let's say that the transmitted position value is 123.
Thus the linear position value will be as follows:
Linear position value
= transmitted position * linear resolution
Linear position value
= 123 * 0.024 = 2.952 mm = 2952 µm
EXAMPLE 2
Let's suppose that we are using the SFA-5000-PB-8192-PG draw-wire encoder.
The singleturn resolution is set to the 4000 cpr custom value (
Counts per
revolution
= 4000). The transmitted position value is 1569.
The linear resolution can be easily calculated as follows:
Linear resolution =
200
= 0.05 mm = 50 µm
4000
Thus the linear position value will be as follows:
Linear position value
= 1569 * 0.05 = 78.45 mm = 78450 µm
Position and velocity values
when Class 2 (+VEL) is set
(Encoder  Master)
Byte 1 … 4 5 … 8
Bit 31-24 … 7-0 31-24 … 7-0
Position Velocity
For more information on the position value refer to the previous Position value
parameter on page 56.
See also the
Exchange type
parameter.
The velocity value is expressed according to the setting in the
Velocity measure
unit
parameter.
Max. speed and counting frequency
To convert the speed value from m/s into rpm (revolutions per minute), then you
must use the following formula:
Speed in rpm
=
60 * speed m/s
0.2
MAN SFA_5000_10000_PB E 1.0 Profibus® interface 58 of 72