12.7
Frequency Output problems
Frequency Output problems and recommended actions
Table 12-3:
Problem
Possible causes
Recommended actions
No Frequency Output
•
Stopped totalizer
•
Process condition below cutoff
•
Fault condition if Fault Action is set to
Inter-
nal Zero
or
Downscale
•
Two-phase flow
•
Flow in reverse direction from configured
flow direction parameter
•
Bad frequency receiving device
•
Output level not compatible with receiving
device
•
Bad output circuit
•
Incorrect internal/external power configu-
ration
•
Wiring problem
•
Verify that the process conditions are be-
low the low-flow cutoff. Reconfigure the
low-flow cutoff if necessary.
•
Check the Fault Action settings.
•
Verify that the totalizers are not stopped.
A stopped totalizer will cause the Frequen-
cy Output to be locked.
•
Check for two-phase flow.
•
Check flow direction.
•
Verify the receiving device, and the wiring
between the transmitter and the receiving
device.
•
Verify that the channel is wired and config-
ured as a Frequency Output.
•
Verify the power configuration for the Fre-
quency Output (internal vs. external).
•
Perform a loop test.
Consistently incorrect
frequency measure-
ment
•
Output not scaled correctly
•
Incorrect measurement unit configured for
process variable
•
Check the Frequency Output scaling.
•
Verify that the measurement units are con-
figured correctly for your application.
Erratic Frequency
Output
•
Radio frequency interference (RFI) from
environment
•
Check for radio frequency interference.
Phase on Channel C
does not change with
flow direction
•
The Frequency Output mode is not config-
ured to show flow direction
•
Check the Frequency Output mode.
Cannot configure
Channel C for Fre-
quency Output opera-
tion
•
Invalid channel selections
•
FO and DO1 use the same circuitry and
cannot run simultaneously. Configure
Channel B as FO and Channel C as DO2.
12.8
Discrete output problems
Problem
Possible causes
Recommended actions
Cannot configure
Channel B to operate
as DO1
Invalid channel configuration
FO and DO1 use the same circuitry and cannot
run simultaneously. Configure Channel B as FO
and Channel C as DO2.
Troubleshooting
176
Micro Motion Model 2500 Transmitters with Configurable Input/Outputs
Содержание Micro Motion 2500
Страница 8: ...Contents vi Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 10: ...Getting started 2 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 18: ...Quick start 10 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 20: ...Configuration and commissioning 12 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 124: ...Complete the configuration 116 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 130: ...Set up the Weights Measures application 122 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 132: ...Operations maintenance and troubleshooting 124 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 140: ...Transmitter operation 132 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 216: ...Using ProLink III with the transmitter 208 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 226: ...Default values and ranges 218 Micro Motion Model 2500 Transmitters with Configurable Input Outputs ...
Страница 237: ...NE 53 history Configuration and Use Manual 229 ...