Emerson Rosemount 3100 Series - Electrical Installation; Connecting the Transmitter

Reference Manual
00809-0100-4840, Rev. BA
July 2008
3-9
Rosemount 3100 Series
ELECTRICAL
INSTALLATION
Connecting the
Transmitter
The Rosemount 3100 Series is a two-wire loop-powered transmitter accepting
power supplies as follows:
• The 3101: 12 to 30 Vdc
• The 3102: 12 to 40 Vdc
• The 3105: 12 to 40 Vdc (non-hazardous), 12 to 30 Vdc (hazardous).
NOTE:
To comply with the CSA approval, The 3101 and The 3102 must be powered
from a Rosemount 3490 Series Control Unit, or a class 2 or SELV source.
Each transmitter is supplied with two cable entries. A suitable conduit system
or cable gland must be used to maintain the weather-proof rating and
hazardous area protection. Any unused entry must be sealed with a suitably
rated blanking plug.
To connect the transmitter:
1. Make sure that the power supply is disconnected.
2. Remove the cover of the transmitter housing.
3. Pull the cable through the cable gland/conduit.
4. Connect the cable wires:
a) For The Rosemount 3101, connect wires according to the section
“Wiring for The Rosemount 3101“ on page 3-10.
b) For The Rosemount 3102, connect wires according to the
section “Wiring for The Rosemount 3102“ on page 3-11.
c) For The Rosemount 3105, connect wires according to the
section “Wiring for The Rosemount 3105“ on page 3-12.
5. Make sure that the transmitter housing is grounded.
6. Replace the cover, tighten the cable gland, and connect the power supply.
After Completing the Wiring
To maintain the weather-proof rating and hazardous area protection of the
transmitter, ensure all cable glands, blanking plugs, and seals are in good
condition.
Check that the cover seal is in good condition, and not twisted or misaligned
in the seal location groove. When replacing the cover, tighten the three cover
screws evenly to exert uniform pressure on the cover seal.