Emerson MICRO MOTION 2700 Installationshandbuch Seite 68

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58 Transmitter Configuration and Use: Series 1000 and 2000 Transmitters
Required Transmitter Configuration continued
6.6 Configuring the frequency output(s)
Different transmitters have different frequency output options. See Section 6.3 for
information on configuring your transmitter’s outputs.
Note: Configure the transmitter for the required input/output types before
configuring individual outputs. See Section 6.3.
The frequency output generates two voltage levels:
•0 V
A site-specific voltage, determined by the power supply, pull-up resistor, and load (see the
installation manual for your transmitter)
If your transmitter is configured for two frequency outputs (Model 2500 CIO and Model 2700 CIO
transmitters only), the Channel C signal is generated from the Channel B signal, with a user-specified
phase shift. The signals are electrically isolated but not independent. You cannot configure Channel B
and Channel C independently.
Note: Configuring both Channel B and Channel C as frequency outputs is used to enable dual pulse
or quadrature mode (see Section 6.6.5).
If a frequency output is present on your transmitter, the following parameters must be set:
Process variable
Output scale
Pulse width
Polarity
Mode (Model 2500 and Model 2700 only, if two frequency outputs have been configured)
Fault indicator
To configure the frequency output, see the menu flowcharts in Figure 6-6. For details on mA output
parameters, see Sections 6.6.1 through 6.6.5.
Note: If you use the display to configure the frequency output, you can configure only the process
variable and the Frequency = flow output scale. To configure other frequency output parameters, use
ProLink II or the Communicator.
Model 1500 AN
Model 1700 AN
Model 1700 IS
Model 2500 CIO
Model 2700 AN
Model 2700 IS
Model 2700 CIO
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