Control functions
7.4 Internal position control (IPos)
Examples for configuring mechanical system
Step
Description
1
Identify the mechanical
system
2
Define LU
3
Calculate the LU per
load shaft revolution
4
Set param-
p29247
eters
p29248
p29249
7.4.2
Setting fixed position setpoint
Eight position setpoints in total are available. Each position setpoint comes from one group
of position data:
Fixed position setpoint
Fixed position setpoint 1
Fixed position setpoint 2
Fixed position setpoint 3
Fixed position setpoint 4
158
Ball screw
Pitch of ball screw: 6 mm
•
Reduction gear ratio: 1:1
•
1 LU = 1 µm
6/0.001 = 6000 LU
6000
1
1
Corresponding parameters
Parameter
Description
p2617[0]
Fixed position setpoint 1 (P_pos1)
p2618[0]
Speed of fixed position setpoint 1 (P_pos_spd1)
p2572
IPos maximum acceleration
p2573
IPos maximum deceleration
p2617[1]
Fixed position setpoint 2 (P_pos2)
p2618[1]
Speed of fixed position setpoint 2 (P_pos_spd2)
p2572
IPos maximum acceleration
p2573
IPos maximum deceleration
p2617[2]
Fixed position setpoint 3 (P_pos3)
p2618[2]
Speed of fixed position setpoint 3 (P_pos_spd3)
p2572
IPos maximum acceleration
p2573
IPos maximum deceleration
p2617[3]
Fixed position setpoint 4 (P_pos4)
p2618[3]
Speed of fixed position setpoint 4 (P_pos_spd4)
p2572
IPos maximum acceleration
p2573
IPos maximum deceleration
Mechanical system
Rotary angle: 360
•
Reduction gear ratio: 3:1
•
1 LU = 0.01
o
360/0.01 = 36000 LU
36000
1
3
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 07/2015, 6SL3298-0AV60-0BP0
Disc table
o