Parameterization and Commissioning
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914660330020
2017-11-24·HB00·III·en·00
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Frequency Transmitter
Field Circuit Ex i
Series 9146
9.2.2 Input (via "ISpac Wizard" Software)
The frequency transmitter offers different operating modes, which can be set depending
on the application. The default setting is the operating mode "Frequency via period
measurement".
9.2.3 Signal Processing (via "ISpac Wizard" Software)
The selection allows the frequency range to be restricted for further processing inside
the module. The minimum value of the analog output corresponds to the set minimum
frequency and the same is true of the maximum values.
This allows the user to define the frequency range relevant for him and set it in relation
to the range of the output signal (0 to 20 mA or 4 to 20 mA).
9.2.4 Output (via "ISpac Wizard" Software)
Here the characteristics of the analog and pulse outputs can be configured.
Analog output:
Apart from the selection whether the analog signal should adopt values between
0 to 20 mA or 4 to 20 mA, the characteristics of the output in case of error can be defined.
The selections include "Output error value" (freely selectable), "Keep last value" or
"Fault detection off".
Pulse output:
The pulse output can be activated and deactivated. In addition, a splitter ratio of
between 1 and 20,000 can be entered.
Selection
Description
Counter (0 to 65535)
Incoming pulses are counted. The analog output signal (0/4 to 20 mA)
is increased linearly until reaching the counter value. The maximum counter
value can be set.
Counter overflow
If the overflow is activated, the counter will start counting again when the
maximum counter value is exceeded, and the output signal (sawtooth)
will follow.
When the overflow is off, the counter and the analog signal will stop upon
reaching the maximum value.
They can be reset via the front-panel DIP switches "ADJ1 " and
"ADJ2 "(OFF-ON-OFF and ON-OFF-ON, respectively)
Frequency via period
measurement
For measurements in the range from 1 mHz to 1 kHz.
Frequency via events
(50, 200 or 1000 ms)
For measurements in the range from 1 to 20 kHz.
