Servo Gain Factor Kv Nc Md 252 - Siemens SINUMERIK 840C Installation Instructions Manual

10 Axis and Spindle Installation
10.4.1 Drive optimization
10.4.1.3
To achieve only negligible contour deviations with continuous path control, a high K
gain) factor (NC MD 252*) is required.
If the K factor is too high, however, instability, overshoots and possibly excessive machine
V
loads result.
The maximum permissible K
• the drive configuration
(rise time, acceleration and braking ability).
• the quality of the machine
The K factor is defined as
V
K
V
If an empirical value for the K
overshooting or instability.
K factor adjustment
V
Reduce the acceleration (NC MD 276*). The overshoot behaviour is decisive for evaluating the
maximum K
V
ensure that the drive remains below its current threshold.
If the drive is intended to have acceleration of 1 m/s
to one-half of the value
10–24
More user manuals on
Servo gain factor K
V
factor depends on:
V
Speed
=
Following error
m/min
is the unit of the K
mm
factor is known for the machine, set this value and check for
V
Good speed controller optimization is a precondition for
a correct K
factor. The acceleration must therefore be set at an accordingly low level to
0.5 m/s
ManualsBase.com
NC MD 252*
[m/min]
[mm]
factor according to VDI standard
V
factor setting.
V
2
, adopt a cautious approach and reduce
2
ˆ = input 50
© Siemens AG 1992 All Rights Reserved
12.93
(servo
V
6FC5197- AA50
SINUMERIK 840C (IA)