Cylindrical Inductive Proximity Sensor [Amplifier Built-in / DC 3-wire Type] GX-300

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• The tightening torque should be under the value given below.

Installation using set screw Do not tighten the product mounting nuts with excessive force. Model No. Tightening torque Set screw location A (mm in) GX-303S 0.2N・m 13 to 21 0.512 to 0.827 GX-304S 8 to 21 0.315 to 0.827 GX-305S 0.4N・m

Installation using nut Do not tighten the nut with excessive force. Be sure to install the toothed locked washer. In the case of the M8 threaded type, the allowable strength differs depending on the distance from the tip of the head. The following table shows the allowable tightening strengths for section B and section C shown in the diagram. (Section B starts from the tip of the head and its dimension is indicated in the table. Section C includes the nut on the head side. Therefore, if the nut extends into section B even slightly, the strength of section B is applicable.) The following allowable tightening strengths are applicable when the washer is installed. Model No. (Shielded type) B C Dimension (mm in) Tightening torque Tightening torque GX-305M - 1N・ｍ GX-308M(K) 9 0.354 9N・m 12N・m GX-312M(K) - 30N・m GX-318M(K) - 70N・m GX-330M(K) - 180N・m Model No. (Non-shielded type) B C Dimension (mm in) Tightening torque Tightening torque GX-308ML(K) 3 0.118 9N・m 12N・m GX-312ML(K) - 30N・m GX-318ML(K) - 70N・m GX-330ML(K) - 180N・m

• Please use the sensor after confirming the installation distance by following (a) and (b) with an actual detection object when you install.

• Please install the sensor to come within the range of (Sa) when the detection object moves from vertical direction.
• Please install the sensor to pass within the range of (Sa) when the detection object moves from horizontal direction.
• When using the sensor, refer to the "Standard sensing object" specified in the specifications and the graph, "Correlation between sensing object size and sensing range".

• As metal around the sensor may affect the sensing performance, pay attention to the following points.

Influence of surrounding metal

• The surrounding metal will affect the sensing performance. Keep the minimum distance specified in the table below.
• When mounting the sensor using a nut, use the nut and washer provided with the product.
• The type of the provided nut varies in different models. See the external dimensions diagrams for the detail of the shape.

(Unit：mm in)

• When two or more sensors are installed in parallel or face to face, keep the minimum separation distance specified below to avoid mutual interference.

• This product has been developed / produced for industrial use only.
• Do not install the product in the following locations. Doing so may result in product failure or malfunction.
  ∙ Outdoor locations directly subject to sunlight, rain, snow, water droplets, or oil.
  ∙ Locations subject to atmospheres with chemical vapors, in particular solvents and acids.
  ∙ Locations subject to corrosive gases.
• The product may malfunction if used near ultrasonic cleaning equipment, high-frequency equipment, transceivers, cellular phones, inverters, or other devices that generate a high-frequency electric field.
• Laying the product wiring in the same conduit or duct as high-voltage wires or power lines may result in incorrect operation and damage due to induction. Wire the product using a separate conduit or independent conduit.
• The following conditions shall be observed if you use the product under an environment using cutting oil that may affect product’s life and/or performance.
  ∙ Usage in oil or water is prohibited.
• Impact on the product life may differ depending on the oil you use. Before using the cutting oil, make sure that it should not cause deterioration or degradation of sealing components.
• Never use thinner or other solvents. Otherwise, the product surface may be dissolved.
• When turning ON the power by influence of temperature environment, an output mis-pulse sometimes occurs.
  After the product has passed for 300 ms after turning ON, please use in the stable state. If the sensing object is located near the sensor’s sensing surface, an output mis-pulse may be generated for 300 ms or longer at the time of power-on.
  Be sure to check the product for proper operation under actual operating condition before using.
• The product is adjusted with a high degree of accuracy, so do not use in the environment with sudden temperature change.
• Do not attempt to disassemble, repair, or modify the product.
• Do not use a voltage that exceeds the rated operating voltage range. Applying a voltage that is higher than the operating voltage range may result in damage or burnout.
• Be sure that the power supply polarity and other wiring is correct. Incorrect wiring may cause explosion or burnout.
• If the power supply is connected directly without a load, the internal elements may explode or burn. Be sure to insert a load when connecting the power supply.
• Please use gloves to protect yourself from injury caused by screw.
• For the connector type and pigtailed type, check the specifications of the connector cable to be used. Please do not use it under conditions that exceed the range of its specifications of both the product and the connector cable.
• Please make sure there is no foreign matter in connector part before connecting the connector cable to the connector type and pigtailed type.
• In the IO-Link mode, the cable between the IO-Link master and sensor must have a length of 20 m 65.617 ft or less.