BONFIGLIOLI Active Cube User Manual page 38

4th step: Determine the encoder resolution:
First determine the number of user units per encoder increment. If, for example, the
encoder features a resolution of 1 mm and 0.01 is to be used as the "user unit", β =
100.
β = Number of user units per encoder increment
5th step: Calculate
The reference system and the number of user units per encoder increment β deter-
mine parameter
Bits / Revo
or
Bits / Rev
Round the value up to the next natural number.
With the values above,
Note:
6th step: Calculate
Bits Multiturn
bits of the encoder with the
Multiturn
With the values above,
7th step: Calculation of speed sensor 2 gear factors
For calculation of speed sensor 2 gear factors, the
lated first as follows:
Preliminary Numerator
Then, the preliminary denominator is calculated:
Preliminar
or
Preliminar
38
1271 :
Bits/Turn
1271.
Bits/Turn
Feed Constant
=
lution Log
2
R
=
olution Log
β
2
R
1
= ⋅
Ln
β
Ln 2
Bits/Turn
Conversion of logarithm base 2 and other bases:
Ln
Log a
10
= =
Log a
2
Log 2 Ln
10
Bits Multiturn
1272 is calculated from the subtraction of the total number of position
Bits/Turn
= −
GeberBits Bits / Umdrehung
Bits Multiturn
= 2 ^
Bits/Turn
Feed Constant
=
yDenominat or
R
=
yDenominat or
β
EM-ABS-01 for ACU
[ ]
u
⋅
1115
G e arBox : DrivingSha
U
⋅ β
G earBox : MotorShaft Revolution
1271=5.
a
2
1272 :
1271 calculated above.
1272=19.
preliminary numerator
1271
[ ]
u
⋅
1115
G e arBox :
U
⋅ β
G earBox : MotorShaft
1116
ftRevoluti ons
⋅
1117
s
is calcu-
DrivingSha ftRevoluti ons
⋅
1117
Revolution s
03/12
1116