Example: Linear Axis With Rotary Encoder On Motor - Siemens SINUMERIK 840D sl Function Manual

G2: Velocities, setpoint / actual value systems, closed-loop control
7.4 Setpoint/actual-value system
7.4.6.3

Example: Linear axis with rotary encoder on motor

Figure 7-5
The ratio of the internal increments to the encoder increments per mm is calculated as follows:
Example
Assumptions:
● Rotary encoder on the motor: 2048 pulses/revolution
● Internal pulse multiplication: 2048
● Gearbox, motor / ball screw: 5:1
● Leadscrew pitch: 10 mm/revolution
● Computational resolution: 10000 increments per mm
Machine data
MD30300 $MA_IS_ROT_AX
MD31000 $MA_ENC_IS_LINEAR[0]
352
n
Linear axis with rotary encoder on motor
n
=
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
=
Value
Basic Functions
0
0