Siemens SIMATIC FM 353 Manual page 71

"Working range of frequency generator"
You can use the following diagram to check that the combination of parameters
selected in machine data MD39 to MD45 lie within the working range of the fre-
quency generator (white area).
10 20 40
Acceleration too great
with reference to f
Working points of the frequency generator in the direction of shift of e.g. Px by the
acceleration override function (a
Fig. 5-5
Machine data values range:
Start/Stop frequency f
Maximum frequency f
Frequency rise df/dt:
Condition:
Example:
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
100 1 000
ss
1 000
500
Working range, frequency generator
: (MD39)
ss
: (MD41)
max
(MD42 − 45)
The intersections of the lines df/dt and f
with f must be within the white area!
max
MD39 = 4 kHz, MD41 = 50 kHz
MD42, 44 = 200 kHz/s ³ P1/P2
MD43, 45 = 80 kHz/s ³ P3/P4
10 000
P2
P1
t a
over
over
P3
P4
Acceleration too low
with reference to
f
max
10 000 100 000
) and time override (t
over over
10 Hz − 10 kHz
500 Hz − 200 kHz
10 Hz/s − 10 MHz/s
d df/dt
ss
Defining Parameters
f [Hz]
ss
f [Hz]
max
200 000
).
5-19