Emerson Rosemount 975 - Page 19

Figure 2-9: Typical wiring for four-wire controllers
A. Controller
B. First detector
C. Second detector
D. Last detector
E. Power supply
F. Alarm loop
G. End of line
Figure 2-10: Non-isolated sink (three wires)
A. Detector
B. Controller
C. Input power: 18 to 32 VDC
D. Return
E. 0-20 mA meter
Manual Installation
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Rosemount 975 19