Discrete Output Problems - Emerson Micro Motion SGM Series Configuration And Use Manual

Table 14-7: Milliamp output problems and recommended actions
Problem Possible causes
Consistently incorrect •
mA measurement •
•
•
•
mA output correct at •
lower current, but in-
correct at higher cur-
rent
14.12

Discrete output problems

Table 14-8: Discrete output problems and recommended actions
Problem Possible causes
No discrete output •
•
•
Loop test failed •
•
•
•
Discrete output read- •
ings reversed •
Configuration and Use Manual
Loop problem
Output not trimmed correctly
Incorrect measurement unit configured for
process variable
Incorrect process variable configured
LRV and URV are not set correctly
mA loop resistance may be set too high
Output not powered
Wiring problem
Circuit failure
Output not powered
Power supply problem
Wiring problem
Circuit failure
Wiring problem
Configuration does not match wiring
(continued)
Recommended actions
• Check the mA output trim. See
Section 14.15.
• Verify that the measurement units are con-
figured correctly for your application.
• Verify the process variable assigned to the
mA output.
• Check the settings of Upper Range Value
and Lower Range Value. See
• Verify that the mA output load resistance
is below the maximum supported load
(see the installation manual for your trans-
mitter).
Recommended actions
• Verify that the output loop is powered ex-
ternally.
• Check the power supply and power supply
wiring. See Section 14.2.
• Verify the output wiring.
• Contact Micro Motion.
• Verify that the output loop is powered ex-
ternally.
• Check the power supply and power supply
wiring. See Section 14.2.
• Verify the output wiring.
• Contact Micro Motion.
• Verify the output wiring.
• Ensure that Discrete Output Polarity is set
correctly.
Troubleshooting
Section 14.17.
161