User's Manual

Technical specifications
8.7 Switching frequency
M200D AS-Interface Basic
Manual, 03/2009, A5E01668085-01
95
ON period (ED)
The relative ON period (ED) in % is the ratio between load duration and cycle duration for
loads that are often switched on and off.
The ON period (ED) can be calculated using the following formula:
ED =
t
s
+ t
b
t
s
+t
b
+t
p
ED ON period [%]
t
s
Start time [s]
t
b
Operating time [s]
t
p
Pause interval [s]
Graphics-based representation:
,
H
W
W
V
W
E
W
S
Figure 8-1 ON period (ED)