Startup; Overview; Startup Tasks; Figure 12- Digital Output Connections For Plc Counting Input - Honeywell STT850 SMARTLINE User Manual

Temperature transmitter

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For best performance, it is recommended that:

•

Digital Output wires should be in a separate shielded twisted pair cable, do not use the same

cable as used for the Loop or the Sensor wires

•

If using the same power supply to operate both the 4-20mA Loop and the Digital Output, then

make the interconnections to the power supply terminals directly at the power supply

Figure 12– Digital Output Connections for PLC Counting Input

3.6 Startup

This section identifies typical start up tasks associated with several generic temperature measurement

applications. It also includes the procedure for running an optional analog output check.

After completing the installation and configuration tasks for a Transmitter, you are ready to start up the

process loop. Startup usually includes:

•

Setting initial resistance (T/C sensor types only)

•

Reading inputs and outputs

•

Applying process inputs to the transmitter.

You can also run an optional output check to wring out an analog loop and check out individual

Process Variable (PV) outputs in Digitally Enhanced (DE) mode before startup.

Page 16

STT850 Temperature Transmitter User's Manual

Revision 1

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