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SA603 12V DC Modulating 4-20mA with Analog Output 4-20mA

SA603 is a 12V DC modulating circuit for motorized valves. It uses a 4–20mA analog input signal and provides a 4–20mA feedback output.

Wiring Diagram

SA603 12V DC circuit with green and yellow 4–20mA input wires and blue and white 4–20mA feedback output wires — SA603 — 12V DC supply with 4–20mA input and feedback output.

Supply and Input Connections

Disconnect power before making or changing connections.

Connect the black wire to the negative terminal of the 12V DC power source.
Connect the red wire to the positive terminal of the 12V DC power source.
Keep these two supply wires permanently connected during normal operation.
Connect the green wire to the positive (+) terminal of the 4–20mA signal source.
Connect the yellow wire to the negative (−) terminal of the 4–20mA signal source.

Feedback Output Connections

Blue wire: Positive (+) 4–20mA feedback output.
White wire: Negative (−) 4–20mA feedback output.