Mfp (Pulse Generator); Pcl (Pulse Shortener) - Siemens Sinamics S110 Function Manual

Drive functions
7.3 Function modules
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.
1
I
0
1
Q
0
Figure 7-72
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.
1
I
0
1
Q
0
Figure 7-73
306
T T
MFP (pulse generator): Time flow chart
T
PCL (pulse shortener): Time flow chart
T
T
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Function Manual