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Limit Touch Switch Object Actuates Switch and Turns Built-in Monitor Indicator ON • Instantaneous operation upon contact with extremely limited hysteresis for high-precision position detection. • Detects minute displacement or lightweight objects with minimal operating force. • Built-in LED indicator ensures easy operation monitoring. • DC models provide versatile functions in combination with the S3D2 Sensor Controller. Be sure to read Safety Precautions on page 6 to 7 and Safety Precautions for All Limit Switches. Application Examples · Detection of press completion position. · Detection of mistakes in workpiece setting or removal. · Detection of minute workpieces. · Drill positioning. · Material positioning. · Detection of workpiece edges. · Displacement detection and control. · Detection of paper or cloth edge (using indirect grounding). · Thickness control of rolling plates. Pressure NL Paper (cloth) NL Roller Ground side · Detection of paper or cloth seam (using indirect grounding). Controller Unit NL Controller Unit NL NL Grounding rod Paper (cloth)

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NL Ordering Information Built-in Antenna Model Model Built-in antenna model · Provides sufficient OT (overtravel). Features · Antenna tip withstands bending. · Ensures high-precision positioning control. · OT of 5-mm max. (overtravel) Coil spring Power supply voltage Antenna only NL1-C ANTENNA ASSY (Same for NL1, NL2, and NL3) Note: Each model is provided with a standard 1-m cable. Separate Antenna Model Model Separate antenna model Features · Antenna with 3-m extension cable is available for narrow spaces where conventional limit switches cannot be used. No antenna Plunger with antenna...

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NL Structure and Nomenclature Nomenclature Coil spring antenna Antenna assy Rubber packing Cover (not removable) Mounting hole (with mounting pitch conforming to DIN standards) Principle of Operation The Limit Touch Switch constantly emits a high frequency. If an object comes in touch with the touch antenna, .. Constants of the oscillation circuit will change and oscillation will stop. Switching circuit will operate and send out output signals. Applicable to a variety of purposes in combination with a dedicated sensor power supply. Feedback circuit Antenna Oscillation circuit Wave detection...

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NL Connections Output Circuit Diagrams NL1 Black (White) Blue (Black) 4.7 kΩ Switch main circuit Switch main circuit Black Load (White) Output Blue (Black) Black Load (White) 100 VAC, 200 VAC Output Switch main circuit 0V Blue (Black) Note: The 0-V power supply side will be connected to the casing if the model is the NL1 or NL2. External Connection Sensor Power Supply (S3D2) The use of the S3D2 is recommended for supplying 12 VDC to the NL2 (or 24 VDC to the NL2) and converting the output of the NL into relay or open collector output in versatile timing control. The NL3 does not require a...

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Built-in Antenna Models Coil Spring NL1-C NL2-C NL3-C *1. The stainless-steel plunger antenna allows a maximum OT (overtravel) of 5 mm. *2. This position is the FP (free position) of the plunger. *3. Use after removing the caution label. *1. The coil spring antenna is movable in any direction. Make sure that the angle of the antenna is within 30° to the FP (free position) after the antenna comes into contact with the object. *2. Use after removing the caution label. Note: 1. The force that pushes the actuator must not exceed 1.96 N. 2. The antenna is replaceable. Contact your OMRON...

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NL Safety Precautions Refer to Safety Precautions for All Limit Switches. CAUTION Make sure that the antenna does not come into contact with the human body, otherwise an electric shock may be received. Precautions for Correct Use Antenna Grounded through Sensing Object • Grounded Object If the sensing object is the following grounded conductor, its size will not affect the operation of the NL. Check for the presence of insulators sticking to the sensing object or the corrosion of the sensing object, however, so that the ground resistance will not exceed 3 kΩ. Contact with Grounded Conductor...

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If more than one NL is used in parallel or side-by-side, make sure that the distance between the antennas is at least 4 cm. 4 cm min. • Do not disassemble the NL, otherwise the internal wiring will be damaged and the NL will fail to operate. • Make sure that the conduit opening is free of foreign materials or cuttings. • The sealing of the NL uses nitrile butadiene rubber (NBR), which is highly oil resistive. If exposed to some types of oil or chemical indoors or outdoors, however, the NBR may deteriorate. Contact your OMRON representative for details. • Make sure that the load is connected...

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Read and Understand This Catalog Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments. Warranty and Limitations of Liability WARRANTY OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified) from date of sale by OMRON. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER...

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