Siemens SIMATIC FM 353 Manual page 163

Determining the machine data:
M Torque increase from boost
[Nm]
M0
5
Torque drop from PWM
3.4
( )
3
M1
M
1.8
M2
0.6
M
Load
0
10
J
2
[kg@cm ]
3
J
Load
0
Fig. 7-6 Operating characteristic curve of the stepper motor
When you evaluate this example characteristic in accordance with the algorithm in
Figure 7-7, you determine the following machine data:
MD39 = 100 Hz
MD40 = 3 000 Hz
MD42 = 218 000 Hz/s
MD43 = 109 000 Hz/s
MD44 = 0
MD45 = 0
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
b1
M
b2
100 f1 f0
12
Start/stop frequency
Frequency value
Acceleration 1 (f v
Acceleration 2 (f >
Deceleration 1 = acceleration 1
Deceleration 1 = acceleration 2
Maximum permissible
operating moment
Start/Stop
SS (J = 0)
1 000 f 10 000
eg
f
max
e.g. 500 increments/revolution
120 1 200
f
eg
)
f
eg
)
f
eg
Starting up
n [1/min]
f [Hz]
n [1/min]
7-15