Siemens SINUMERIK 840D sl Function Manual page 471
Hide thumbs
Also See for SINUMERIK 840D sl:
- Function manual (1726 pages) ,
- Programming manual (1334 pages) ,
- Commissioning manual (1102 pages)
Table of Contents
Advertisement
Procedure
1. First optimize the position control loop as a proportional-action controller first using the
2. Increase the tolerances of the following machine data while measurements are being
3. Activate the position control loop as a proportional-plus-integral-action controller by
4. Find the appropriate compromise for T
5. Use servo trace to trace the travel-in of an automatic program traveling to and from a
6. Set the servo trace to display the following:
7. Reset the tolerance values in the following machine data to the required values, once the
Basic logic functions: Velocities, Setpoint/Actual Value Systems, Closed-Loop Control (G2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
tools described in the previous subsections.
taken to determine the quality of the position control with proportional-plus-integral-action
controller:
– MD36020 $MA_POSITIONING_TIME
– MD36030 $MA_STANDSTILL_POS_TOL
– MD36040 $MA_STANDSTILL_DELAY_TIME
– MD36400 $MA_CONTOUR_TOL
setting the following machine data:
MD32220 $MA_POSCTRL_INTEGR_ENABLE ; set value 1
MD32210 $MA_POSCTRL_INTEGR_TIME ; integral time [sec.]
Effect of integral time:
– T
→ 0:
n
The control error is corrected quickly; however, the control loop can become instable.
– T
→ ∞:
n
The control error is corrected more slowly.
cases as outer limits.
T
must not be set too close to the instability limit, since there is a risk of damage to the
n
machine if instability should occur.
target position.
– Following error
– Actual velocity
– Actual position
– Reference position
optimum value for T
has been identified:
n
– MD36020 $MA_POSITIONING_TIME
– MD36030 $MA_STANDSTILL_POS_TOL
– MD36040 $MA_STANDSTILL_DELAY_TIME
– MD36400 $MA_CONTOUR_TOL
2.5 Optimization of the control
for your application, using these two extreme
n
Detailed description
83
- Quick Links:
- Alarm Behavior
- Programming
- Machine Data
Hide quick links:
Advertisement
Chapters
Table of Contents
