Siemens SINUMERIK 840C User Manual

Page 715

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09.95

10 Axis and Spindle Installation

10.4.1 Drive optimization

Enter the servo gain according to the following conversion formula in NC MD 252*:

K

V

(0.01 s

-1

) =

5000

3

K

V

m/min

mm

·

= 1666

K

V

m/min

mm

·

The numerical value 1666 is thus input for the K

V

factor 1.

To evaluate the starting conditions and determine whether the set maximum value has been
selected correctly, use the dynamically most unfavourable axis that contributes to continuous
path control.

Measure the setpoint voltage n

set

to the speed controller with an oscillomink ink jet plotter,

storage oscilloscope or with the integrated servo start-up function (Section 9). Traverse at
various feedrates.

n

set

[V]

n

set

[V]

t [ms]

t [ms]

Especially deceleration can be observed with high voltage gain on the screen.

© Siemens AG 1992 All Rights Reserved 6FC5197- AA50

10–25

SINUMERIK 840C (IA)

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