Emerson Micro Motion 9739 MVD Configuration And Use Manual page 147

Configuration and Use Manual
MMI-20016855
c) Return the remote input device to normal operation.
Postrequisites
• If the mA Output readings are within 20 microamps of the expected values, you can correct this
discrepancy by trimming the output.
• If the discrepancy between the mA Output readings is greater than 20 microamps, or if at any step the
reading was faulty, verify the wiring between the transmitter and the remote device, and try again.
• If the mA Input reading was slightly off at the transmitter, calibrate the mA signal at the remote input
device.
• If the Discrete Input readings are reversed, check the setting of Discrete Input Polarity.
10.16.3 Perform loop tests using the Field Communicator
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 1 Loop Testor Service
Tools → Maintenance → Simulate Outputs → mA Output 2 Loop Test, and select 4 mA.
b) Choose Service Tools → Simulate → Simulate Outputs → mA Output Loop Test and select 4
mA.
c) 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.
d) Press OK.
e) Select 20 mA.
f) 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.
g) Press OK.
h) Choose End.
2. Test the Frequency Output(s).
Note
If the Weights & Measures application with NTEP approval is enabled on the transmitter, it is not
possible to perform a loop test of the Frequency Output, even when the transmitter is unsecured.
Configuration and Use Manual
Troubleshooting
June 2019
147