Milliamp Output Problems - Emerson Micro Motion 1700 Configuration And Use Manual

Troubleshooting
10.6

Milliamp output problems

Table 10-6: Milliamp output problems and recommended actions
Problem Possible causes
No mA output •
•
•
Loop test failed •
•
•
•
•
mA output below 4 •
mA •
•
•
•
•
Constant mA output •
•
•
•
•
184
Wiring problem
Circuit failure
Channel not configured for desired output
Power supply problem
Wiring problem
Circuit failure
Channel not configured for desired output
Incorrect internal/external power configu-
ration
Open in wiring
Bad output circuit
Process condition below LRV
LRV and URV are not set correctly
Fault condition if fault action is set to inter-
nal zero or downscale
Bad mA receiving device
Incorrect process variable assigned to the
output
Fault condition exists
Non-zero HART address (mA output 1)
Output is configured for loop test mode
Zero calibration failure
Recommended actions
• Check the power supply and power supply
wiring. See
• Check the mA output wiring.
• Check the Fault Action settings. See
Section
• Measure DC voltage across output termi-
nals to verify that the output is active.
• Contact Micro Motion.
• Check the power supply and power supply
wiring. See
• Check the mA output wiring.
• Check the Fault Action settings. See
Section
• Contact Micro Motion.
• Check your process conditions against the
values reported by the flowmeter.
• Verify that the receiving device, and the
wiring between the transmitter and the re-
ceiving device.
• Check the settings of Upper Range Value and
Lower Range Value. See
• Check the Fault Action settings. See
Section
• Verify the output variable assignments.
• View and resolve any existing alarm condi-
tions.
• Check the HART address and Loop Current
Mode. See
• Check to see if a loop test is in process (the
output is fixed).
• Check HART burst mode configuration.
See Section
• If related to a zero calibration failure, cycle
power to the meter and retry the zeroing
procedure.
®
Micro Motion Model 1700 Transmitters with Analog Outputs
Section 10.9.
10.19.
Section 10.9.
10.19.
Section 10.18.
10.19.
Section 10.15.
10.16.