LJ24A3-10-Z/DX Inductive Proximity Sensor, 2-Wire DC NC, 6–36VDC, 10mm Detection Range, Brass-Nickel Plated Housing

The LJ24A3-10-Z/DX uses a simple 2-wire configuration. Connect the brown wire to the positive DC supply voltage (6–36VDC) and the blue wire to the load (e.g., a PLC input or relay coil), then connect the other side of the load to the DC negative/common. The sensor acts as a normally-closed switch; when no target is detected, the circuit is closed, and when a metal target enters the 10mm range, the switch opens.

Yes, inductive proximity sensors can detect all conductive metals, but the effective sensing distance is reduced for non-ferrous targets compared to ferrous steel. For the LJ24A3-10-Z/DX, the 10mm nominal sensing distance is typically specified for mild steel. For aluminum, copper, or brass, you should expect a reduced sensing range, often between 40% to 70% of the rated distance, depending on the specific alloy's conductivity and permeability.

NC denotes a normally-closed output switch. In the absence of a target metal object, the sensor's internal switch is closed, allowing current to flow through the load. When a metal target enters the detection zone, the switch opens, interrupting the current. This logic is useful for fail-safe applications, as a wire break or power loss mimics the 'target present' state, triggering an alarm or safety shutdown.

Yes, with its IP65 ingress protection rating, the sensor is dust-tight and protected against low-pressure water jets from any direction. This makes it suitable for washdown areas, machining centers with coolant, or outdoor applications exposed to rain. However, it is not submersible or designed for high-pressure, direct water immersion.