Micro Motion RFT9709 Manuel d'instructions Page 72

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Vue de la page 71
58
Using ProLink
®
Software with Micro Motion
®
Transmitters
View Menu: Status
continued
Critical indicators
To troubleshoot these status indicators, follow these steps:
1. Wiring problems are often incorrectly diagnosed as a faulty sensor.
At initial startup of the transmitter, always check the following:
a. Proper cable, and use of shielded pairs
b. Proper wire termination
Wires on correct terminals
Wires making good connections at transmitter terminals
(
Table 7-2
lists terminal designations for Micro Motion
sensors)
Wires properly connected at any intermediate terminal
junction, such as the junction box between a Model DT sensor
and transmitter
2. For a Version 3 RFT9739, follow steps 2a through 2b. For earlier
versions, and for other transmitter models, go to step 3.
a. Open the Test menu, then choose Test Points. The Test Point
Diagnostics dialog box appears, as depicted in
Figure 7-4
, page
59.
b. Compare the displayed values with the values listed below and
proceed as follows:
If the displayed drive gain exceeds 8 V, see
Table 7-3
, page
59 to troubleshoot the problem.
If the displayed value for the left or right pickoff does not equal
approximately 0.0034 V per Hz, based on the displayed tube
frequency, go to step 3.
Table 7-2. Sensor and transmitter terminal designations
Sensor
terminal
Transmitter terminals
Wire color Function
RFT9739
field-mount,
RFT9712
RFT9739
rack-mount RFT9729
IFT9701 or
IFT9703
No connection 0 CN1-Z4 CN1-26d GD Black Shields
1 1 CN1-Z2 CN1-10d 1 Brown Drive +
2 2 CN1-B2 CN1-8d 2 Red Drive -
3 3 CN1-B6 CN1-14d 3 Orange Temperature -
4 4 CN1-B4 CN1-12d 4 Yellow Temperature
lead length
compensator
5 5 CN1-Z8 CN1-20d 5 Green Left pickoff +
6 6 CN1-Z10 CN1-24d 6 Blue Right pickoff +
7 7 CN-Z6 CN1-16d 7 Violet Temperature +
8 8 CN1-B10 CN1-22d 8 Gray Right pickoff -
9 9 CN1-B8 CN1-18d 9 White Left pickoff -
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