Troubleshooting
Table 10-6
Milliamp output problems and recommended actions
continued
Problem
Possible causes
Recommended actions
Consistently
incorrect mA
measurement
•
Output not trimmed correctly
•
Incorrect flow measurement unit
configured
•
Incorrect process variable configured
•
LRV and URV are not set correctly
•
Check the mA output trim. See Section
10.16 .
•
Verify that the measurement units
are configured 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 Section
mA output correct
at lower current, but
incorrect at higher
current
•
mA loop resistance may be set too
high
•
Verify that the mA output load
resistance is below maximum
supported load (see the installation
manual for your transmitter).
10.7
Frequency output problems
Table 10-7
Frequency output problems and recommended actions
Problem
Possible causes
Recommended actions
No frequency output
•
Process condition below cutoff
•
Fault condition if fault indicator is set
to internal zero or downscale
•
Slug 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
configuration
•
Incorrect pulse width configuration
•
Output not powered
•
Wiring problem
•
Verify that the process conditions are
below the low-flow cutoff. Reconfigure
the low-flow cutoff if necessary.
•
Check the
Fault Action
settings. See
Section 10.18 .
•
Verify that the totalizers are not stopped.
A stopped totalizer will cause the
frequency output to be locked.
•
Check for slug flow. See Section 10.24.
•
Check flow direction. See Section 10.22.
•
Verify that the receiving device, and the
wiring between the transmitter and the
receiving device
•
Verify which wiring terminals are
configured for frequency output.
•
Perform a loop test.
•
Verify that the power configuration for the
frequency output (internal vs. external).
•
Check the pulse width. See Section
10.20 .
Configuration and Use Manual
189
Содержание Micro Motion 9739 MVD
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Страница 30: ...Quick start with the display OFFLINE MAINT RESTORE ZERO RESTORE YES 24 Micro Motion 9739 MVD Transmitters ...
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Страница 207: ...Appendices and reference ...
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Страница 230: ...Using the transmitter display Figure C 4 Offline menu version information 224 Micro Motion 9739 MVD Transmitters ...
Страница 231: ...Using the transmitter display Figure C 5 Offline menu configuration units and I O Configuration and Use Manual 225 ...
Страница 233: ...Using the transmitter display Figure C 7 Offline menu configuration display Configuration and Use Manual 227 ...
Страница 234: ...Using the transmitter display Figure C 8 Offline menu Simulation loop testing 228 Micro Motion 9739 MVD Transmitters ...
Страница 236: ...Using the transmitter display Figure C 10 Offline menu Zero 230 Micro Motion 9739 MVD Transmitters ...
Страница 239: ...Using ProLink II with the 9739 MVD transmitter Figure D 2 Configuration menu Configuration and Use Manual 233 ...
Страница 241: ...Using ProLink II with the 9739 MVD transmitter Figure D 4 Configuration menu continued Configuration and Use Manual 235 ...
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Страница 245: ...Using the Field Communicator with the 9739 MVD transmitter Figure E 2 Overview menu Configuration and Use Manual 239 ...