Emerson Rosemount 2130, Справочное руководство

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20
Reference Manual
00809-0100-4130, Rev DC
Installation
January 2019
Installation
2.4 Setting the mode switch and switching time delay
1. Select “Dry on” or “Wet on” mode.
2. Select 0.3, 1, 3, 10, or 30 seconds for the delay before switching output state.
Note
There is a five-second delay when changing mode or time delay. The small cut-out on the mode switch
indicates the selected mode and time delay.
Recommended installation for high level is “Dry on” (
Figure 2-18 ) and for low level it is “Wet on”
( Figure 2-19 ). Do not install in the normally ‘off’ state.
Figure 2-17. Top-down View: Example Cassette Inside Housing
A. LED
B. Mode switch/time delay
Figure 2-18. “Dry On” Mode, One-Second Time Delay (Typical for High-Level Applications)
A. Mode “Dry on” and one second delay
Figure 2-19. “Wet On” Mode, One-Second Time Delay (Typical for Low-Level Applications)
A. Mode “Wet On” and one second delay
OPERATION MODE
Dry On Mode
Dry
Wet
Wet On Mode
Dry
Wet
Dry On Wet On
Seconds Delay
0.3 0.3
3
30
10
1
3
30
10
1
1 2 3
OUT + -
4
PLC/PNP
Isolate Supply
Before Removing
B
A
Dry On Wet On
Seconds Delay
0.3 0.3
3
30
10
1
3
30
10
1
A
Dry On Wet On
Seconds Delay
0.3 0.3
30
10
3
30
10
1
3
1
A