Troubleshooting
There should be no open circuits, that is, no infinite resistance readings. The left pickoff and right
pickoff readings should be the same or very close (±5
Ω
). If there are any unusual readings, repeat
the coil resistance tests at the sensor junction box to eliminate the possibility of faulty cable. The
readings for each coil pair should match at both ends.
5.
Test the terminals in the sensor junction box for shorts to case.
a.
Leave the terminal blocks disconnected.
b.
Remove the lid of the junction box.
c.
Testing one terminal at a time, place a DMM lead on the terminal and the other lead on
the sensor case.
With the DMM set to its highest range, there should be infinite resistance on each lead. If
there is any resistance at all, there is a short to case.
6.
Test the resistance of junction box terminal pairs.
a.
Test the brown terminal against all other terminals except the red one.
b.
Test the red terminal against all other terminals except the brown one.
c.
Test the green terminal against all other terminals except the white one.
d.
Test the white terminal against all other terminals except the green one.
e.
Test the blue terminal against all other terminals except the gray one.
f.
Test the gray terminal against all other terminals except the blue one.
g.
Test the orange terminal against all other terminals except the yellow and violet ones.
h.
Test the yellow terminal against all other terminals except the orange and violet ones.
i.
Test the violet terminal against all other terminals except the yellow and orange ones.
There should be infinite resistance for each pair. If there is any resistance at all, there is a short
between terminals.
Postrequisites
To return to normal operation:
1. Plug the terminal blocks into the terminal board.
2. Replace the transmitter housing cover.
3. Replace the lid on the sensor junction box.
Note
When reassembling the meter components, be sure to grease all O-rings.
Configuration and Use Manual
199
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 ...