Emerson Micro Motion 2700 Configuration And Use Manual page 194

Troubleshooting
Table 10-2: Milliamp output problems and recommended actions
Problem Possible causes
Loop test failed •
•
•
•
•
•
mA Output below •
4 mA •
•
•
•
•
Constant mA Output •
•
•
•
•
•
•
mA Output consis- •
tently out of range
•
•
186
Output not powered
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
Output is configured for a range that is far
in excess of intended range. Reconfigure
output.
The process condition is below cutoff.
Incorrect process variable or units assigned
to output
Fault condition if Fault Action is set to Up-
scale or Downscale
LRV and URV are not set correctly
Micro Motion Model 2700 Transmitters with Intrinsically Safe Outputs
(continued)
Recommended actions
• Verify that the output loop is powered ex-
ternally.
• If applicable, check the output wiring to
verify that the output is powered.
• Check the power supply and power supply
wiring.
• Verify the output wiring.
• Check the Fault Action settings.
• Verify channel configuration for the affec-
ted mA Output.
• Contact customer support.
• Check your process conditions against the
values reported by the device.
• Verify the receiving device, and the wiring
between the transmitter and the receiving
device.
• If applicable, check the output wiring to
verify that the output is powered.
• Check the settings of Upper Range Value
and Lower Range Value.
• Check the Fault Action settings.
• Verify the output variable assignments.
• View and resolve any existing alert condi-
tions.
• Check the HART address. If the HART ad-
dress is non-zero, you may need to change
the setting of mA Output Action.
• Check to see if a loop test is in process (the
output is fixed).
• Check HART burst mode configuration.
• If related to a zero calibration failure, cycle
power to the meter and retry the zeroing
procedure.
• Process condition is below cutoff. Check
and adjust the cutoff setting.
• Verify the output variable assignments.
• Verify the measurement units configured
for the output.
• Check the Fault Action settings.
• Check the settings of Upper Range Value
and Lower Range Value.
• Check the mA Output trim.