wtw DIQ/S 181, Руководство по эксплуатации

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DIQ/S 181
Outputs
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Characteristic curve If a value for End value that is greater than the Start value is entered,
the output has a positive characteristic curve.
In order to obtain a negative characteristic curve, a value for End value
must be entered that is smaller than the value for Start value .
6.4.6 Pulse-width output
Function The characteristic of the pulse width output is laid down in the Start
value , End value , Pulse width (v) min. and Pulse width (v) max.
settings. The fundamentals of the function are described in the
introductory chapter (see section 6.3.3).
In order to set up the Pulse-width output function for a relay output, the
relay output must be linked with the sensor (see section 6.2.1).
Settings
Start value within the
measuring range
(sensor-
dependent) Minimum spacing:
5 % of the
measuring range
End value
Frequency (f) min. 0 to 120 1/min Minimum spacing:
10 1/min
Frequency (f) max.
Frequency with error 0 to 120 1/min In case of system
errors or sensor
errors (see
page 87), the relay
switches with the
frequency
specified.
Action Open
Close Relay action
Setting Selection/Values Explanation
Setting Selection/Values Explanation
Measured variable Main variable
Adjoining variable Main variable
designates the
actual measured
parameter of the
sensor (e.g. pH,
oxygen, etc.).
Adjoining variable
designates an
additional measured
parameter (e.g.
temperature).