6.1.5 Motor/encoder feed constant
The feed constant corresponds to the machine moon for one revoluon of the gearbox out-
put sha.
When a turntable is used, the feed constant is = 360°/revoluon when dened as an angle.
The feed constant of a conveyor drive results from the circumference of the drive roll.
Calculaon of the feed constant
Symbol Descripon
F
C
Feed constant
d Diameter
n Revoluon
Example:
The feed constant of a spindle drive (linear axis) results from the leadscrew pitch. The feed
constant indicates the distance travelled by the slide in one revoluon (in the following exam-
ple 5,023 mm).
Fig. 2: Feed constant of a spindle drive
h Leadscrew pitch from the technical data of the linear axis
The kinemac parameters for the second encoder can be used to dene how an imported
enc
oder posion or encoder speed should be converted into machine units.
Parameter
Address Name / seng range / [default seng] Info
0x500A:032 Feed constant
0.0001 ... [360.0000] ... 214748.3647
•
Seng can only be changed if the inverter is inhibi-
t
ed.
0x500B:032 Feed constant
0.0001 ... [360.0000] ... 214748.3647
•
Seng can only be changed if the inverter is inhibi-
ted.
Technology applicaon (TA) basic sengs
Kinemac sengs
Motor/encoder feed constant
49