Coils and test terminal pairs
(continued)
Table 12-7:
Coil
Sensor model
Terminal colors
Fixed resistor (see note)
CMFS007, CMFS010, CMFS015,
CMF400, and F300
Yellow to orange
Note
The F300/H300/CMF400 fixed resistor applies to only certain specific sensor releases. Contact
customer support for more information.
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.
4.
Test the terminals in the sensor junction box for shorts to case.
Test results will be inconclusive with nonconductive process fluids such as
hydrocarbons.
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.
5.
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.
Troubleshooting
Configuration and Use Manual
193
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 ...