Function blocks
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MN05013005E
251
Figure 129: EZD circuit diagram with pulse width modulation.
Parameter display and parameter set for pulse width
modulation:
The parameter display for a timing relay is used to modify the
period duration, the minimum on time and the enabling of the
parameter display.
Value and time ranges
Inputs
The function block inputs
>SV
,
>PD
and
>ME
can be
assigned the following operands:
• Constants
• Markers MD, MW, MB
• Analog inputs IA01 to IA04
– IA01: terminal I7
– IA02: terminal I8
– IA03: terminal I11
M 95---------------------------Ä PW01EN
PW01E1-------------------------Ä M 96
PW02 +
>SV
>PD
>ME
PW02
Pulse width modulation function block number 02
+
Appears in the parameter display
>SV
Manipulated variable input
>PD
Period duration in ms
>ME
Minimum on duration, minimum off duration in ms
Parameter
Value and time range
Resolution
SV
0 to 4095
1 digit
PD
0 to 65535
ms
ME
0 to 65535
ms
J
The minimum time setting for the period duration is: 0.005 s
(5 ms)