Siemens SINAMICS S110 - MFP (Pulse Generator); PCL (Pulse Shortener)

Drive functions
7.3 Function modules
Function Manual
306 Function Manual, 01/2011, 6SL3097-4AB10-0BP3
7.3.8.12 MFP (pulse generator)
Brief description
● Timer for generating a pulse with a fixed duration
● Used as a pulse-contracting or pulse-stretching monoflop
Mode of operation
The rising edge of a pulse at input I sets output Q to 1 for pulse duration T. The pulse
generator cannot be retriggered.
Time flow chart
Output pulse Q as a function of pulse duration T and input pulse I.
I
Q
0
T
1
0
1
TT
Figure 7-72 MFP (pulse generator): Time flow chart
7.3.8.13 PCL (pulse shortener)
Brief description
Timer for limiting the pulse duration
Mode of operation
The rising edge of a pulse at input I sets output Q to 1.
Output Q becomes 0 when input I is 0 or pulse duration T has expired.
Time flow chart
Output pulse Q as a function of pulse duration T and input pulse I.
I
Q
0
1
T
1
0
T
Figure 7-73 PCL (pulse shortener): Time flow chart