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【Notification of Manufacturer Change for Panasonic Industrial Devices SUNX Products and Panasonic Industrial Devices SUNX Tatsuno Products】
From April 1, 2024, the terms "Panasonic Industrial Devices SUNX Co., Ltd." and "Panasonic Industrial Devices SUNX Tatsuno Co., Ltd."
in this page and in the manuals and other documents to be downloaded will all be replaced with "Panasonic Industry Co., Ltd." and applied accordingly.

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

Cautions For Use

This Web site is a guide to select a suitable product. Be sure to read instruction manual attached to the product prior to its use.

  • Never use this product as a sensing device for personnel protection.
  • In case of using sensing devices for personnel protection, use products which meet laws and standards, such as OSHA, ANSI or IEC etc., for personnel protection applicable in each region or country.

Mounting

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

Installation using set screw

  • Do not tighten the product mounting nuts with excessive force.

Installation using set screw
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.

Installation using nut
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

Mounting hole and nut dimensions

Mounting hole and nut dimensions
型式名 D(mm in) E(mm in)
GX-303S ø3.3+0.50
ø0.130+0.01970
-
GX-304S ø4.2+0.50
ø0.165+0.01970
-
GX-305S ø5.7+0.50
ø0.224+0.01970
-
GX-305M ø5.5+0.50
ø0.217+0.01970
-
GX-308M(K)
GX-308ML(K)
ø8.5+0.50
ø0.335+0.01970
13
0.512
GX-312M(K)
GX-312ML(K)
ø12.5+0.50
ø0.492+0.01970
17
0.669
GX-318M(K)
GX-318ML(K)
ø18.5+0.50
ø0.728+0.01970
24
0.945
GX-330M(K)
GX-330ML(K)
ø30.5+0.50
ø1.201+0.01970
36
1.417

Bending radius of lead-out cable section

Bending radius of lead-out cable section
Model No. Bending radius R
GX-303S 7 mm 0.276 in or more
GX-304S 9 mm 0.354 in or more
GX-305S
GX-305M

Installing small-diameter sensor

  • Please use the sensor after confirming the installation distance by following (a) and (b) with an actual detection object when you install.
(a) The detection distance receives the influence by the material of the detection object, thickness, shape, and the size. So, the detection object is brought close to the front side of the sensor and detection distance (S) is measured. For the effect of the material, see the graph, "Correlation between sensing object size and sensing range".
(b) Please decide installation distance (Sa) with S × 70% or less after measuring sensing distance(S).
  • 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".

Installing small-diameter sensor

Distance from surrounding metal

  • 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.

Mounting method

(Unit:mm in)

Model No.
(Shielded
type)
Mounting method A Mounting method B
F G H I J G K H I
GX-303S - - - - 0 ø3
ø0.118
0 3
0.118
8
0.315
GX-304S - - - - 0 ø4
ø0.157
0 5
0.197
10
0.394
GX-305S - - - - 0 ø5.4
ø0.213
0 3
0.118
8
0.315
GX-305M 0 ø5
ø0.197
5
0.197
10
0.394
0 ø5
ø0.197
0 5
0.197
10
0.394
GX-308M 0 ø8
ø0.315
4.5
0.177
12
0.472
0 ø8
ø0.315
0 4.5
0.177
12
0.472
GX-312M 0 ø12
ø0.472
8
0.315
18
0.709
0 ø12
ø0.472
0 8
0.315
18
0.709
GX-318M 0 ø18
ø0.709
20
0.787
27
1.063
0 ø18
ø0.709
0 20
0.787
27
1.063
GX-330M 0 ø30
ø1.181
40
1.575
45
1.772
0 ø30
ø1.181
0 40
1.575
45
1.772
GX-308MK 0 ø8
ø0.315
4.5
0.177
12
0.472
0 ø8
ø0.315
0 4.5
0.177
12
0.472
GX-312MK 0 ø18
ø0.709
12
0.472
18
0.709
2.4
0.094
ø18
ø0.709
2.4
0.094
12
0.472
18
0.709
GX-318MK 0 ø27
ø1.063
24
0.945
27
1.063
3.6
0.142
ø27
ø1.063
3.6
0.142
24
0.945
27
1.063
GX-330MK 0 ø45
ø1.772
45
1.772
45
1.772
6
0.236
ø45
ø1.772
6
0.236
45
1.772
45
1.772
Model No.
(Non-shielded
type)
Mounting method A Mounting method B
F G H I J G K H I
GX-308ML 6
0.236
ø24
ø0.945
8
0.315
24
0.945
6
0.236
ø24
ø0.945
6
0.236
8
0.315
24
0.945
GX-312ML 11
0.433
ø40
ø1.575
20
0.787
36
1.417
15
0.591
ø40
ø1.575
15
0.591
20
0.787
36
1.417
GX-318ML 18
0.709
ø55
ø2.165
40
1.575
54
2.126
22
0.866
ø55
ø2.165
22
0.866
40
1.575
54
2.126
GX-330ML 25
0.984
ø90
ø3.543
70
2.756
90
3.543
30
1.181
ø90
ø3.543
30
1.181
70
2.756
90
3.543
GX-308MLK 9
0.354
ø24
ø0.945
8
0.315
24
0.945
12
0.472
ø24
ø0.945
12
0.472
8
0.315
24
0.945
GX-312MLK 11
0.433
ø40
ø1.575
20
0.787
40
1.575
15
0.591
ø40
ø1.575
15
0.591
20
0.787
40
1.575
GX-318MLK 21
0.827
ø70
ø2.756
48
1.890
70
2.756
25
0.984
ø70
ø2.756
25
0.984
48
1.890
70
2.756
GX-330MLK 40
1.575
ø120
ø4.724
90
3.543
120
4.724
45
1.772
ø120
ø4.724
45
1.772
90
3.543
120
4.724

Mutual interference

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

Mutual interference
Model No.
(Shielded type)
L
(mm in)
M
(mm in)
GX-303S 20 0.787 15 0.591
GX-304S 20 0.787 15 0.591
GX-305S 20 0.787 15 0.591
GX-305M 20 0.787 15 0.591
GX-308M(K) 20 0.787 15 0.591
GX-312M(K) 30 1.181 20 0.787
GX-318M 50 1.969 35 1.378
GX-318MK 60 2.362 35 1.378
GX-330M 100 3.937 70 2.756
GX-330MK 110 4.331 90 3.543
 
Model No.
(Non-shielded type)
L
(mm in)
M
(mm in)
GX-308ML(K) 80 3.150 60 2.362
GX-312ML(K) 120 4.724 100 3.937
GX-318ML 200 7.874 110 4.331
GX-318MLK 200 7.874 120 4.724
GX-330ML 300 11.811 200 7.874
GX-330MLK 350 13.780 300 11.811

Timing chart

Timing chart

Notes:

1) When sensors that are not compatible with IO-Link are used or when IO-Link compatible models are used as ordinary sensors, they operate in the standard I/O mode (SIO mode).
2) The operation mode can be changed by the IO-Link communications. The timer function of the output can be set up by the IO-Link communications.

Others

  • 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.

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