Figure 4-2: Wiring Diagram for Rosemount 3102
A.
Maximum cable length is 9,750 ft. (3,000 m)
B.
Connect the cable shield/screen to ground (earth) in the control room
C.
Cable thickness: Ø0.15 to 0.31-in. (Ø4 to 8 mm)
D.
Twisted-pair, screened wires minimum size: 0.22 mm
2
(24 SWG/23
AWG); maximum: 1.5 mm
2
(16 SWG/18 AWG)
E.
Minimum of 12 Vdc is required at the transmitter for it to operate
F.
Transmitter terminals:
1(+): +24 Vdc
2(-): 0 Vdc
3+4: Relay 1(SPST)
5+6: Relay 2 (SPST)
7+8: Remote temperature sensor
Quick Start Guide August 2019
12 www.emerson.com
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