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f. Click UnFix.
12.12.4 Perform loop tests using the Field Communicator
Tip
Loop tests are not required. However, Micro Motion recommends performing a loop test for every
input or output available on your transmitter. The inputs and outputs available on your transmitter
vary according to your purchase option and your channel configuration. You may not need to
perform all of the loop tests described here.
Prerequisites
Before performing a loop test, configure the channels for the transmitter inputs and
outputs that will be used in your application.
Follow appropriate procedures to ensure that loop testing will not interfere with existing
measurement and control loops.
Procedure
1.
Test the mA output(s).
a. Choose Service Tools > Simulate > Simulate Outputs > mA Output Loop Test and select 4
mA.
b. Read the mA current at the receiving device and compare it to the transmitter
output.
The readings do not need to match exactly. If the values are slightly different,
you can correct the discrepancy by trimming the output.
c. Press OK.
d. Select 20 mA.
e. Read the mA current at the receiving device and compare it to the transmitter
output.
The readings do not need to match exactly. If the values are slightly different,
you can correct the discrepancy by trimming the output.
f. Press OK.
g. Choose End.
2. Test the frequency output(s).
Note
If the Weights & Measures application is enabled on the transmitter, it is not possible to
perform a loop test of the frequency output, even when the transmitter is unsecured.
a. Press Service Tools > Simulate > Simulate Outputs > Frequency Output Test, and choose
the frequency output level.
Troubleshooting
Configuration and Use Manual 233