wtw DIQ/S 182-MOD System Operating Manual page 97

System 182
Negative characteristic
ba75504e07 04/2012
The proportional output range begins below the initial value. If the
curve proportional range is undercut or exceeded, the selected behavior
comes into force.
Pulse width
100
90
50
10
0
Fig. 6-10 Pulse width output
Switching frequency f [1/min]
100
50
0
Fig. 6-11 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
v [%]
Proportional
band
2 Measured value 1
Proportional
band
2 Measured value
90%
Cycle
duration T
50%
t
On
10% 90%
Time
Maximum
switching frequency
50 % of maximum
switching frequency
Minumum
1
switching frequency
Relay outputs
10%
50%
t
Of f
Time
6 - 13