Emerson Rosemount 2120, Справочное руководство

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Table 4-4: PNP/PLC Cassette Functions
Mode: dry on, high level alarm Mode: wet on, low level alarm
PLC (positive input)
1 2
-
I/P
PLC
+
3 4
I
L
< 3 V
U
1 2
-
I/P
PLC
+
3 4
I
L
<100 μA
1 2
-
I/P
PLC
+
3 4
I
L
< 3 V
U
1 2
-
I/P
PLC
+
3 4
I
L
<100 μA
PNP dc
1 2
- +
3 4
R
F
< 3 V
U
I
L
1 2
- +
3 4
R
F
I
L
<100 μA
1 2
- +
3 4
R
F
< 3 V
U
I
L
1 2
- +
3 4
R
F
I
L
<100 μA
LED
LED on continuously LED flashes every second LED on continuously LED flashes every second
Reference Manual Electrical installation
00809-0100-4030 March 2022
Rosemount 2120 Level Switch 39