YSI DIQ/S 182-MOD System 182 - Manual (Page 99)

System 182 Relay outputs
6 - 13 ba76025e01 02/2012
Negative characteristic
curve
The proportional output range begins below the initial value. If the
proportional range is undercut or exceeded, the selected behavior
comes into force.
Fig. 6-10 Pulse width output
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
0
10
50
90
100
Proportional
band
t
On
t
Of f
50 % 50 %
10 %
10 %
90 %
90 %
Cycle
duration T
Time
Measured value 1 2
Pulse v [%] width
0
50
100
Measured value
Proportional
band
1
50 % of maximum
switching frequency
Maximum
switching frequency
Time
2
Switching frequency f [1/min]
Minumum
switching frequency