Emerson Micro Motion 5700 Configuration And Use Manual page 234

Troubleshooting
Table 15-10: Milliamp output problems and recommended actions
Problem Possible causes
mA output below •
4 mA
•
•
•
•
•
•
•
Constant mA output •
•
•
•
•
mA output consis- •
tently out of range
•
•
Consistently incorrect •
mA measurement •
•
•
•
•
mA output correct at •
lower current, but in-
correct at higher cur-
rent
mA output goes in •
and out of fault condi-
tions
226
Incorrect internal/external power configu-
ration
Output not powered
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
A loop test is in progress
Zero calibration failure
mA Output Direction not set correctly
Incorrect process variable or units as-
signed to output
Fault condition if Fault Action is set to Up-
scale or Downscale
LRV and URV are not set correctly
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 Output Direction not set correctly
mA loop resistance may be set too high
Interaction between the Output Saturated
alert and the fault action configured for
the output
(continued)
Recommended actions
• 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.
• Check the settings of Upper Range Value
and Lower Range Value.
• Check the Fault Action settings.
• Verify channel configuration for the affec-
ted mA output.
• Verify the output variable assignments.
• View and resolve any existing alert condi-
tions.
• Check the direction parameters.
• Check to see if a loop test is in process (the
output is fixed).
• If related to a zero calibration failure, re-
boot or power-cycle the transmitter and re-
try the zeroing procedure.
• 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.
• Check the mA output trim.
• Verify the measurement units configured
for the output.
• Verify the process variable assigned to the
mA output.
• Check the direction parameters.
• Check the settings of Upper Range Value
and Lower Range Value.
Verify that the mA output load resistance is be-
low the maximum supported load. See the in-
stallation manual for your transmitter.
• Change the severity of the Output Satura-
ted alert from Fault to another option.
• Configure the transmitter to ignore the
Output Saturated alert or the relevant con-
ditions.
• Change the configuration of Fault Action
from Downscale to another option.
Micro Motion Model 5700 with Ethernet Transmitters