Xylem DIQ/S 281 Operating Manual page 99

DIQ/S 281
Output with one
relay
Output with two
relays
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Proportional outputs can be used in the following way:
 Output with one relay:
An output range is defined with a
takes place above and below the output range (see page 99).
 Output with two relays:
An output range is defined for each relay with a
One relay outputs in the upper output range and a further relay in the lower
output range (see page 99).
Switching frequency f or
Pulse width v
100
90
10
0
1
figure 6-2 Output with one relay
Switching frequency f or
Pulse width
100
90
10
0
Start value
1
Measured value with a minimum pulse width or switching frequency
End value
2
Measured value with a maximum pulse width or switching frequency
figure 6-3 Output with two relays
03/2023
Start value
Proportional
band
2
v
Proportional bands
Relay 1 and 2
1
2 1
Relay 1
Relay 2
End value
and an
Start value
Measured value
Measured value
2
Outputs
. No output
End value
and an .
99