AMALGAMATED INSTRUMENT RM3-PS, Operation And Instruction Manual, Page: 4 / 7

Typical interconnection diagrams
The diagrams below illustrate the use of the RM3-PS with integrated RM3-IV transmitters using 4-20mA
inputs and loop powered outputs.
Page 4 of 7 RM3PSMAN-1.0-2
S
Z
Z
S
A
B
C
E
F
G
H
2
3
4
1
2
3
4
1
O/P
O/P
O/P
+
+
+
+
-
-
-
-
Transmitter
2
Transmitter
1
IN+
IN+
IN-
IN-
PLC
PLC
4-20mA
4-20mA
+
+
+
+
-
-
-
-
Supply
Supply
AC Active
AC Neutral
Mains Earth
DC Output +
DC Output -
DC Output -
DC Output +
S
Z
Z
S
A
B
C
E
F
G
H
2
3
4
1
2
3
4
1
O/P
O/P
O/P
+
+
+
+
-
-
-
-
AC Active
AC Neutral
Mains Earth
DC Output +
DC Output -
DC Output -
DC Output +
Transmitter
2
Transmitter
1
IN+
IN+
IN-
IN-
PLC
PLC
4-20mA
4-20mA
+
+
-
-
S
Z
Z
S
A
B
C
E
F
G
H
2
3
4
1
2
3
4
1
O/P
O/P
O/P
+
+
+
+
-
-
-
-
Transmitter
2
Transmitter
1
+24VDC
+24VDC
IN+
IN+
IN-
IN-
PLC
PLC
4-20mA
4-20mA
+
+
-
-
AC Active
AC Neutral
Mains Earth
DC Output +
DC Output -
DC Output -
DC Output +
Application 2 - Two inputs, two isolated outputs. Outputs powered by internal supply.
Application 3 - Two inputs, two outputs. Note: Transmitters share a common supply and outputs share a
common supply.
Application 1 - Two inputs, two isolated outputs. Transmitters powered by internal supply.