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Figure 4-33: Pump 1 and Pump 2 are Off (Level Okay)
A
B
C
D
E
F
A. Level in m
B. 8.0 m (P421)
C. 5.0 m (P411)
D. 2.0 m (P412)
E. Pump 1
F. Pump 2
When the level exceeds 5 m (On Point, P411), relay RL1 is energized to start Pump 1.
(
).
Figure 4-34: Pump 1 is On (Rising Level Above 5 m)
A
B
C
D
E
F
A. Level in m
B. 8.0 m (P421)
C. 5.0 m (P411)
D. 2.0 m (P412)
E. Pump 1
F. Pump 2
When the level exceeds 8 m (On Point, P421), relay RL2 is energized to start Pump 2. Relay
RL1 is de-energized to switch off Pump 1 (
).
Reference Manual
Getting started
00809-0100-4841
January 2021
Emerson.com/Rosemount
107
Summary of Contents for Rosemount 3490 Series
Page 4: ...4 ...
Page 8: ...Introduction Reference Manual January 2021 00809 0100 4841 8 Emerson com Rosemount ...
Page 16: ...Control unit overview Reference Manual January 2021 00809 0100 4841 16 Emerson com Rosemount ...
Page 36: ...Installation Reference Manual January 2021 00809 0100 4841 36 Emerson com Rosemount ...
Page 134: ...Getting started Reference Manual January 2021 00809 0100 4841 134 Emerson com Rosemount ...
Page 184: ...Additional features Reference Manual January 2021 00809 0100 4841 184 Emerson com Rosemount ...
Page 189: ...Reference Manual 00809 0100 4841 January 2021 Emerson com Rosemount 189 ...