BONFIGLIOLI Active Cube User Manual page 37

Required data:
The following data is needed for commissioning of the linear encoder:
Gear transmission [] or input speed / output speed [rpm/rpm]
Encoder resolution [bits]
Running wheel diameter [m]
Required accuracy [m] or resolution [increments/m]
1st step: Identify gear values reference system:
The input speed (motor speed) will determine the setting for parameter
Motor Shaft Revolutions
meter
Gear Box: Driving Shaft Revolutions
The value should be entered as exactly as possible. Shifting of decimal places or mul-
tiplication with appropriate factors can increase accuracy.
Example:
Input speed: 1401 rpm
Output speed: 77.3 rpm
Encoder resolution: 24 Bit
Diameter: 160 mm = 0.16 m
Required accuracy: 0.01 mm = 0.00001 m
Gear Box: Motor Shaft Revolutions
Gear Box: Driving Shaft Revolutions
2nd step: Identify feed constant reference system:
The feed constant is calculated by multiplying the diameter and π by the resolution.
The resolution is the reciprocal of the accuracy.
Accuracy
Feed constant
Example:
Diameter: 0.16 m = 160 mm
Required resolution: 0.00001 m = 0.01 mm
Feed constant
3rd step: Calculate auxiliary quantity reference system
In the following step, the ratio of the
Revolutions
lations frequently. For better clarity, auxiliary quantity "R" (=reference system) is
calculated now:
Feed
=
R
Example:
Feed constant
Gear Box: Driving Shaft Revolutions
Gear Box: Motor Shaft Revolutions
03/12
1117, the output speed will determine the setting for para-
1
=
[m]
⎡ ⎤
u
Resolution
⎢ ⎣ ⎥ ⎦
m
π
[ ] ⋅
Diameter
1115 =
u
Accuracy
π
⋅
=
Diameter
1115 = 50265 rev
1116 and
Gear Box: Motor Shaft Revolutions
[ ]
u
⋅
1115
G earBox
constant
U
G earBox : MotorShaft
1115 = 50265 rev
R = 2773.365 rev = 50265 x 773 / 14010 rev
EM-ABS-01 for ACU
1116.
i = 18.12
1117 = 14010
1116 = 773
[m]
m
[ ]
u
⎡ ⎤
u
⋅
[m] Resolution
⎢ ⎥
⎣ ⎦
m
1115 to
Feed constant
: DrivingSha ft Re volutions
1117
Re volutions
1116 = 773
1117 = 14010
Gear Box:
Gear Box: Driving Shaft
1117 is used in the calcu-
1116
37