wtw DIQ/S 182-PR, Руководство по эксплуатации системы

Страница: 96 / 146

Relay outputs System 182
6 - 12 ba75503e07 04/2012
Positive characteristic
curve
The proportional output range begins above the initial value. If the
proportional range is undercut or exceeded, the selected behavior
comes into force.
Fig. 6-8 Pulse width output
Fig. 6-9 Frequency output
1 Start value
Measured value with a minimum pulse width or switching
frequency
2 End value
Measured value with a maximum pulse width or switching
frequency
0
10
50
90
100
Proportional
band
t
On
t
Of f
50 % 50 %
10 %
10 %
90 %
90 %
Cycle
duration T
Time
Measured value 2 1
Pulse v [%] width
0
60
120
Proportional
band
Time
Measured value 2 1
50 % of maximum
switching frequency
Maximum
switching frequency
Switching frequency f [1/min]
Minimum
switching frequency