Siemens SIPART DR24 - Page 67

Manual
1 Technical Description
1.5 Functional Description
1.5.8 Complex Functions (Arithmetic blocks c, d, h)
SIP ART DR24 6DR2410
C79000-G7476-C153-03
65
Pulse width modulator
Example:
Input value: 0.3
Period: 4 s
=> Turn--on time 1.2 s
Pause 2.8 s
A
E
t
A
BAx.1#
c.F
--
∩ .1
n
---
PUM1 ... PUM4
(onPA)tAE, tM
ncon
The pulse width modulator converts an analog signal into a pulse width modulated digital signal.
Private parameters (onPA): tM Period
tAE Minimum turn--on time
PUM1 --> BA1.1
PUM2 --> BA2.1
PUM3 --> BA3.1
PUM4 --> BA4.1
CAUTION
possible collision with Csix/Csex!
--> binary outputs BA1 ... 4 for  ∆y