Using Sensor Simulation For Troubleshooting; Check Sensor-To-Transmitter Wiring - Emerson Micro Motion 5700 Configuration And Use Manual

Configuration and Use Manual
MMI-20039472
i) Test the violet terminal against all other terminals except the yellow and orange ones.
There should be infinite resistance for each pair. If there is any resistance at all, there is a short between
terminals.
Postrequisites
To return to normal operation:
1. Plug the terminal blocks into the terminal board.
2. Replace the lid on the sensor junction box.
Important
When reassembling the meter components, be sure to grease all O-rings.

16.34 Using sensor simulation for troubleshooting

When sensor simulation is enabled, the transmitter reports user-specified values for basic process variables.
This allows you to reproduce various process conditions or to test the system.
You can use sensor simulation to help distinguish between legitimate process noise and externally caused
variation. For example, consider a receiving device that reports an unexpectedly erratic density value. If
sensor simulation is enabled and the observed density value does not match the simulated value, the source
of the problem is likely to be somewhere between the transmitter and the receiving device.
Sensor simulation requires an enhanced core and a communication device.
Important
When sensor simulation is active, the simulated value is used in all transmitter outputs and calculations,
including totals and inventories, volume flow calculations, and concentration calculations. Disable all
automatic functions related to the transmitter outputs and place the loop in manual operation. Do not enable
simulation mode unless your application can tolerate these effects, and be sure to disable simulation mode
when you have finished testing.

16.35 Check sensor-to-transmitter wiring

A number of power-supply and output problems may occur if the wiring between the sensor and the
transmitter is improperly connected, or if the wiring becomes damaged.
Be sure to check all wiring segments:
• If you have a 4-wire transmitter, check the wiring between the transmitter and the core processor.
• If you have a 9-wire transmitter, check the wiring between the transmitter and the sensor junction box.
• If you have a remote transmitter with remote core processor, check the wiring between the transmitter
and the core processor and the wiring between the core processor and the sensor junction box.
Prerequisites
You will need the installation manual for your transmitter.
Procedure
1. Before opening the wiring compartments, disconnect the power source.
Configuration and Use Manual
Troubleshooting
June 2019
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