Siemens SINUMERIK 840C Installation Instructions Manual page 713

09.95
n = speed setpoint in [VELO], [0.01%] or [
set
n
set
20%
5%
Example:
Overdimensioned drive for a rotary axis (analog)
Input resolution
Position control resolution
Motor speed
Gear (axis motor)
Max. velocity
Set max. velocity
for axis
The following machine data result
MD 256*, scaling factor maximum velocity:
MD 260*, scaling factor maximum speed setpoint:
MD 280*, maximum velocity (progr. rapid traverse G00):
MD 268*, maximum speed setpoint:
MD 268*, MD 260* · 0.8192 + 5% =
MD 264*, threshold for drive errors:
MD 264*, MD 268* + 20% =
Caution: The low speed setpoint has an adverse effect on the control
© Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
mm
/ ]
min
MD 264*
MD 268*
MD 280*
MD 292*
MD 288*
: IS = 10 -3 degrees
-3
: MS = 10 degrees
rev
: n = 3000 /
min
: r = 1 :10
degrees
: V = n · r · 360 [
max
degrees
= 108000
degrees
: = 54000
behaviour of the axis.
6FC5197- AA50
10 Axis and Spindle Installation
10.4.1 Drive optimization
Threshold for drive error
Max. speed setpoint
Max. velocity
(progr. rapid traverse G00)
Conv. rapid traverse
Conv. feedrate
t
[sec]
/ ]
min
rev
/ = 300 /
min min
rev
/ = 150 /
min min
degrees
54000 [ / ]
min
5000 [mV] [0.01%]
-3 degr.
54000 [1000 · 10
4300 [VELO] or 5250 [0.01%]
5160 [VELO] or 6300 [0.01%]
/ ]
min
10–23