Function library
7-45
L
EDSVS9332P-D21 EN 3.0
Example for the adaptation of the encoder resolution:
Gearbox between encoder and drive i=30
Effective wheel diameter d=50mm
Position resolution of the measuring system A
meas
=8inc/mm
Internal position resolution (fix) A
internal
= 65536 inc/rev
Position resolution of the measuring system (with regard to motor side):
Ax
mess
=
(
A
mess
⋅
d
⋅
)
i
=
8
inc
∕
mm
⋅ 50
mm
⋅ 3, 14
30
π
Ax
mess
= 41, 87
inc
∕
rev
Adaptation factor for CONVPHPH2:
C
0473∕4
C
0473∕5
=
A
intern
Ax
mess
=
65536
inc
∕
rev
41, 87
inc
∕
rev
C
0473∕4
C
0473∕5
=
1565
1
•
Read the absolute value at POS-ABS-IN under consideration of the setpoint polarity (C1206)
and the actual value polarity (C1208).
•
The “actual home position” (C1220/8) is then added and the “actual home offset” (C1220/7) is
subtracted.
•
The “actual home position” is set equal to C1227 if POS-ABS-SET = HIGH during initialisation
(sw it c h on).
Tip!
The display values under C1220/5 and C1221/5 only correspond to the absolute value of theencoder
read when using the absolute value encoder through X8!
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