Quick Installation Guide
Rosemount 3095 MultiVariable
STEP 4: CONNECT WIRING AND POWER UP (FIELDBUS)
Use the following steps to wire the transmitter:
1.Remove the housing cover labeled “Field Terminals.” Terminals are not polarity sensitive.
2.Connect the signal leads to the terminals labeled “Fieldbus Wiring”.
3.Plug and seal unused conduit connections.
4.Install wiring with a drip loop. Arrange the drip loop so the bottom is lower than the conduit connections and the transmitter housing.
5.Replace the housing cover.
NOTE
Do not attach shield to ground.
Power Supply
To operate and provide complete functionality, the transmitter requires the supply voltage to be within the ranges shown below.
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Approval Option Code | Supply Voltage |
B, D, F, J, K, L, N, 2, 4, 9 | |
A, C, E, G, H, P, R, 0, 3, 5, 7, 8 | |
T, U, V, W, Y, 6 |
Power Conditioner
A fieldbus segment requires a power conditioner to isolate the power supply filter and decouple the segment from other segments attached to the same power supply.
Grounding
Signal wiring of the fieldbus segment can not be grounded. Grounding out one of the signal wires will shut down the entire fieldbus segment.
Shield Wire Ground
To protect the fieldbus segment from noise, grounding techniques for shield wire usually requires one and only one grounding point for shield wire to avoid creating a ground loop. The ground point is typically at the power supply.
Signal Termination
For every fieldbus segment a terminator should be installed at the beginning and at the end of each segment.
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