Postrequisites
Perform these tasks to complete setting up the transmitter:
•
•
•
1.2
Functions and features
The temperature transmitter detects process temperature and converts it into an analog
output signal.
The temperature transmitter includes an IO-Link interface for configuring parameter
settings or viewing process and diagnostic data.
The transmitter operates in two-wire or three-wire operation modes. The modes produce
these output signals:
Operating mode
Output signals
Two-wire
Analog signal for temperature measurement and diagnostics
Three-wire
•
OUT1: switching signal for diagnostics and IO-Link communication
•
OUT2: analog signal for temperature measurement and diagnostics
1.2.1
Analog function
The temperature transmitter converts the measured temperature value into an analog
signal proportional to the temperature.
The temperature transmitter also uses the analog output to send diagnostic messages
(see
). Diagnostic messages interrupt the transfer of the measured
temperature value depending on the operating mode and drEd. The transmitter modifies
the analog output to the following values according to NE43: 3.5 mA (FOU2 = On) or 21.5
mA (FOU2 = OFF).
Depending on the OU2 setting, the analog signal is between these measuring ranges in
normal operation:
•
I: 4-20 mA
•
Ineg: 20-4 mA
The measuring range is scalable using these parameters:
•
ASP: the analog start point and the measured temperature when the analog signal is 4
mA (OU2 = I) or 20 mA (OU2 = Ineg)
•
AEP: the analog end point and the measured temperature when the analog signal is 20
mA (OU2 = I) or 4 mA (OU2 = Ineg).
Note
The minimum difference between ASP and AEP is 9°F (5°C).
Introduction
Quick Start Guide
January 2019
00825-0100-4329
6
Quick Start Guide
Summary of Contents for Rosemount 327T
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