Emerson ROC364 - Potentiometer to Analog Inputs

ROC364 Instruction Manual
C-4 I/O Simulation Rev Jun/05
Figure C-9 shows how to use a Discrete Output Isolated module simulate a relay contact to a Pulse Input
Source module.
CONTROL
DO ISO
+5V
1 Amp
N/C
NO
COM
B
C
A
B
C
A
–
+
N/C
2.2K
R1=10
DOC0184A
Vs
PI SRC
+
-
Figure C-9. DO Isolated Module to PI Source Module
C.5 Potentiometer to Analog Inputs
Figure C-10 shows how to use a potentiometer to simulate a transmitter feeding a 4 to 20 milliamps
current signal to an Analog Input Loop module.
Vs = 24 VDC: R2 = 1K OHMS
Vs = 12 VDC: R2 = 390 OHMS
5K OHMS
R2
C
-
B
A
+
+T
R1=250
DOC0185A
I LIMIT
A
I LOOP
Vs
Figure C-10. Potentiometer Input to AI Loop Module
Figure C-11 shows how to use a potentiometer and power source to simulate a transmitter feeding a
4 to 20 milliamps current signal to an Analog Input Differential module.
A
UX PWR = 24 VDC, R2 = 20K OHMS
A
UX PWR = 12 VDC, R2 = 8.2K OHMS
AUX PWR OUT 1
R2
-
+
5K OHMS
200K
200K
B
C
-
A
+
N/C
R1=OPEN
DOC0186A
A
I DIFF
Figure C-11. Potentiometer Input to AI Differential Module