Two-wire sensors should typically be connected to which terminals?

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Multiple Choice

Two-wire sensors should typically be connected to which terminals?

Two-wire sensors carry power and the signal on the same two conductors, so they must sit in the path between the power source and the controller’s input. In practice, one wire from the sensor goes to the power supply terminal and the other goes to the input terminal of the controller. When the sensor closes or activates, current flows through the input, producing the detectable signal. This inline arrangement is why the connection is described as power supply terminal and input terminal. The other options involve grounds, shielding, or separate signal paths that aren’t part of the typical two-wire setup.

Two-wire sensors carry power and the signal on the same two conductors, so they must sit in the path between the power source and the controller’s input. In practice, one wire from the sensor goes to the power supply terminal and the other goes to the input terminal of the controller. When the sensor closes or activates, current flows through the input, producing the detectable signal. This inline arrangement is why the connection is described as power supply terminal and input terminal. The other options involve grounds, shielding, or separate signal paths that aren’t part of the typical two-wire setup.

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