wtw DIQ/S 182-PR, System Operating Manual

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System 182 Relay outputs
6 - 7 ba75503e07 04/2012
6.3.3 Proportional output
In the case of proportional output, a relay switches cyclically on and off
in a defined measured value range (proportional range). At the same
time, the relay switches with a:

duration of operation that corresponds to the measured value
(pulse-width output, see page 6-9) or

switching frequency (frequency output, see page 6-10).
Proportional outputs can be used in the following way:

Output with one relay:
An output range is defined with a
Start value and an End value . No
output takes place above and below the output range
(see page 6-8).

Output with two relays:
An output range is defined for each relay with a
Start value and an
End value . One relay outputs in the upper output range and a further
relay in the lower output range (see page 6-8).