Siemens SINUMERIK 840Di Function Manual page 286

Detailed Description
2.3 Axis/spindle service display
Control technology concept
The figure below shows at which points in the controlloop the axis and spindle information is
read off.
Spindle
speed
setpoint
prog.
Following error
Actual position value of measuring system 1
Actual position value of measuring system 2
Fig. 2-2 Overview diagram of axis and spindle information
Checks
Check of the position controller setting
A simple check of the position controller setting can be made by means of the service axis
screen.
To this end, the number 1 (corresponding to KV = 1) is entered in machine datum:
MD32200 $MA_POSCTRL_GAIN [n] (KV factor).
The change takes effect immediately.
2-12
Spindle speed setpoint
current
Position setpoint
(speed setpoint)
Contour
deviation
Active
measuring
system
Speed setpoint [%]
Error signal
Control
parameter set
Abs. compensation value
Measuring system 1
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Actual speed value [%]
e.g. from
direct
measuring
system
Abs. compensation value
Measuring system 2
Diagnostic Tools (D1)