Cylindrical Inductive Proximity Sensor GX-U/GX-FU/GX-N (Discontinued Products)

<All models>

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

• Tighten with the cup-point of a set screw (M4).

<Non-threaded type>		Mounting hole process dimension

• Do not fix on the operation indicator and opposite to it.

Mounting with nut

<Shielded of threaded type>

<Non-shielded of threaded type>

• The root truncation of the threads is shallow owing to strengthening of the sensors against tightening.
  When tapping holes on equipment to fix the sensors, the prepared holes must be value in the table below.

Model No. Prepared hole GX-8MU(B) GX-8MLU(B) ø7.2 mm ø0.283 in GX-12MU(B) GX-12MLU(B) GX-F12MU-J GX-N12M(B) GX-N12ML(B) ø11.2 mm ø0.441 in

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

• The surrounding metal will affect the sensing performance. Keep the minimum distance specified in the table below.

Model No. E (mm in) GX-5SU(B) 4.5 0.177 GX-8MU(B) 4.5 0.177 GX-12MU(B) GX-F12MU-J GX-N12M(B) 8 0.315 GX-18MU(B) GX-F18MU-J GX-N18M(B) 20 0.787 GX-30MU(B) GX-F30MU-J GX-N30M(B) 40 1.575 GX-8MLU(B) 8 0.315 GX-12MLU(B) GX-N12ML(B) 22 0.866 GX-18MLU(B) GX-N18ML(B) 45 1.772 GX-30MLU(B) GX-N30ML(B) 75 2.953

Embedding of the sensor in metal

• Sensing range may decrease if the sensor is completely embedded in metal. Especially for the non-threaded type and the non-shielded type, keep the minimum distance specified in the table below.

		Model No. F (mm in) G (mm in) GX-5SU(B) ø12 ø0.472 3 0.118 GX-8MLU(B) ø24 ø0.945 12 0.472 GX-12MLU(B) GX-N12ML(B) ø50 ø1.969 15 0.591 GX-18MLU(B) GX-N18ML(B) ø75 ø2.953 25 0.984 GX-30MLU(B) GX-N30ML(B) ø105 ø4.134 30 1.181
Note: With the non-shielded type, the sensing range may vary depending on the position of the nuts.

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

Face to face mounting Parallel mounting

Model No. H (mm in) J (mm in) GX-5SU(B) 19 0.748 14 0.551 GX-8MU(B) 20 0.787 15 0.591 GX-12MU(B) GX-F12MU-J 35 1.378 20 0.787 GX-18MU(B) GX-F18MU-J 70 2.756 45 1.772 GX-30MU(B) GX-F30MU-J 115 4.528 70 2.756 GX-8MLU(B) 60 2.362 45 1.772 GX-12MLU(B) 145 5.709 95 3.740 GX-18MLU(B) 250 9.843 165 6.496 GX-30MLU(B) 350 13.780 250 9.843 GX-N12M(B) 25 0.984 15 0.591 GX-N18M(B) 50 1.969 35 1.378 GX-N30M(B) 90 3.543 55 2.165 GX-N12ML(B) 120 4.724 70 2.756 GX-N18ML(B) 180 7.087 125 4.921 GX-N30ML(B) 290 1.417 190 7.480

• The sensing range is specified for the standard sensing object. With a non-ferrous metal, the sensing range is obtained by multiplying with the correction coefficient specified below. Further, the sensing range also changes if the sensing object is smaller than the standard sensing object or if the sensing object is plated.

Correction coefficient

• It protects the sensing surface from welding sparks (spatter), etc.

Model No. Applicable model No. MS-H12 GX-12MU(B) GX-N12M(B) MS-H18 GX-18MU(B) GX-N18M(B) MS-H30 GX-30MU(B) GX-N30M(B)

• Do not use during the initial transient time (50 ms) after the power supply is switched on.
• Make sure that stress by forcible bend or pulling is not applied directly to the sensor cable joint.

<DC 2-wire type>

• The sensor must be connected to a power supply via a load. If the sensor is connected to a power supply without a load, the short-circuit protection makes the sensor inoperable. (The output stays in the OFF state and the indicator does not light up.) In this case, rectify by connecting the power supply via a load. Now, the sensor becomes operable. Further, take care that if the power supply is connected with reverse polarity without a load, the sensor will get damaged.

• For series connection (AND circuit) or parallel connection (OR circuit) of sensors, take care of the following.

• The residual voltage of the sensor is 3 V. Before connecting a relay as the load, take care of its actuation voltage.
  (Some 12 V relays may not be usable.)

• When the sensing object is in the stable sensing range, the LED lights up in green, and when the sensing object is in the unstable sensing range, the LED lights up in orange. While the LED lights up in green, the sensing is performed stably without being affected by temperature drifts or voltage fluctuations.