KEYENCE GT2-PA12K, GT2-PA12 User Manual

High-accuracy Digital Contact Sensor

WARNING

NOTICE

WARNING

NOTICE

GT2-PA12K/PA12

Sensor head × 1 Precautions on Handling × 2

NOTICE

GT2-CH2M/5M/10M/20M (M8 straight connector)

GT2-CHP2M/5M/10M (M8 oil-resistant straight connector)

GT2-CHL2M/5M/10M/20M (M8 L-shaped connector)

● GT2-PA12K/PA12

Cable connector

Cable between the sensor head and relay connector

Mounting fixture

Operation indicator

Air supply hole

Contact

Spindle

Dust seal

Chamfered side

Nut

Tightening sleeve

Dust seal

Wrench or similar

tool

Key wrench

GT2-PA12K/PA12

96M13156

Sensor head connection cable

Instruction Manual

Introduction

Read this instruction manual carefully prior to operating this product. For connection, settings and precautions on use, make sure to read the GT2 Series instruction manual included with the amplifier. Be sure to store this manual in a convenient place so that it is readily accessible for reference. Ensure that the personnel who will actually operate the product have access to this manual. For details of each function, refer to the GT2 Series User’s Manual. You can download the User’s Manual from KEYENCE homepage (http://www.keyence.com/).

Safety precautions

Checking the package

It indicates a hazardous situation which, if not avoided, could result in death or serious injury.

It indicates a situation which, if not avoided, could result in product damage as well as property damage.

• This product is designed to detect the target object. Do not use this product to protect human bodies or a part of a human body.

• This product is not intended for use as an explosionproof product. Do not use this product in hazardous locations and/or potentially explosive atmospheres.

 Warming up

The circuit is not stable immediately after the power turns ON, which sometimes causes the indicated value to gradually fluctuate. Wait for about 5 minutes after the power turns on before using.

 Handling of the sensor head

• This device is a precision machine. Do not drop, or cause any other impact to this device. Doing so may cause damage or malfunction.

• Do not apply weight greater than what is listed below to the spindle. Do not apply rotational torque. Otherwise the spindle may break.

• The spindle can rotate a maximum of 4.5°. When using an offset contact (OP-77683) or similar, if pressure in the rotational direction is applied to the contact, the measurement position may change.

• When attaching and removing contacts, make sure that the sensor head is detached from any metallic plates, etc. Apply a tightening torque of 0.2 N•m or less when attaching the contact.

• If dust, metal powder, or similar becomes attached to the sliding part of the sensor head, mechanical responses may become slow. If this happens, replace the end of the sensor head with a replacement dust seal (OP-87932). Refer to the instruction manual included with the replacement dust seal (OP-87932) for instructions on how to replace the dust seal.

• Although the GT2-PA12K/PA12 has a protection rating of IP67, avoid using it immersed in water or in places where liquid such as oil may come into contact with it.

Names of parts of the sensor head

Mounting the sensor head

When mounting to the jig, make a round hole on the jig beforehand.

 Using mounting bracket A/C

1 Work the sensor head mounting part as below.

0.5〜1.0

±1°

45°

Nut mounting side

5.5〜11.3

(Unit: mm)

Tightening sleeve

+0.027

+0.005

φ10 G8( )

*1 For head mounting bracket C *2 Processing accuracy: ±0.05

+0.1

φ10

+0.005

insertion side

◎

0.025

2 Insert the tightening sleeve into the hole made in step 1 (from the

chamfered side), and loosely tighten with the nut. Next, insert the sensor head.

If the nut is fully tightened when the sensor head is not yet inserted, the fixture will become deformed.

3 Secure the sensor head with the supplied key wrench and tighten the

nut with a wrench or similar tool.

If you find that a part is faulty or broken, contact your KEYENCE representative.

NOTICE

Apply a tightening torque of 5 to 7 N•m (the recommended tightening torque is 5 N•m).

 Using mounting bracket F

NOTICE

8.5



Make sure that the metal plating

mounting bracket F attaches to is at

least 5 mm thick.

NOTICE

Air tube

Air supply hole

Relay connector

Air tube

Mist separato r

Air filter

Pressure source

AIR

Solenoid valve

Precision regulator

Air su pply part GT2-PA12K/PA12

Speed controller

1 Refer to the illustration below, and cut the jig to create a sensor head

mounting hole.

2 Loosen the screw on the side of mounting bracket F using the

supplied hexagonal wrench.

3 Align mounting bracket F with the hole made in step 1 and secure it

using the supplied hexagonal wrench.

4 Insert the sensor head, and tighten the screw loosened in step 2

using the supplied hexagonal wrench to secure. The recommended tightening torque is 0.6 to 0.8 N•m. Make sure that the dust boot does not obstruct the metal plating that mounting bracket F is attached to.

• When loosening the screw with the hexagonal wrench, insert the long end of the hexagonal wrench into the hex screw and rotate the small end with your hand.

• Do not forcibly tighten the hex screw.

 Installing the air tube (GT2-PA12K/PA12)

 Compatible air tubes

Use a tube with the following specifications.

Recommended tubing material Urethane

Tubing size

 How to attach/detach the air tube

• Attaching the air tube

Insert the air tube into the air supply hole on the relay amplifier.

• Detaching the air tube

To detach the air tube, pull the air tube in the direction of the arrow, as

indicated in the figure below.

Item Description

Outer diameter

Inner diameter

•

For best results, cut the end of the tube at a right angle, ensure that the outer perimeter is not damaged, and that it still maintains a circular cross section.

•

If the tube is not properly inserted, air leakage may result.

•

After attaching, pull on the tube to make sure it is secure.

• Use a urethane tube. Make sure it also has a bending radius of at least 50 mm.

4 mm

2.5 mm

 Connecting the sensor head connection cable

1 Insert the sensor head connection cable

into the cable connector on the relay connector cable.

2 Secure the connector with the sensor

head connecting cable screw.

• When connecting the connector, be sure to insert it straight, and tighten it securely. (Recommended tightening torque: 0.4 to 0.5 N•m If the connection is not tight enough, the connector may be loosened by vibration or other causes, leading to a connection failure. (* After tightening it strongly by hand, use pliers or other tools to rotate it about 30° for further tightening.)

• When the head is attached to a moving part, and the cable will be repeatedly bent, ensure that the cable between the sensor head and relay connector does not bend. Instead, bend the sensor head cable connecting the relay connector and the amplifier.

)

NOTICE

Before detaching the tube, be sure to stop any air flow.

 Supplying air

• Refer to the diagram below to create a pneumatic circuit.

• Use an air filter, mist separator, etc. to provide clean dry air. Empty the drainage from the filter regularly, before it exceeds the specified line.

• Make sure that the air pressure of the supplied air is constant and in the range of 0.24 to 0.26 MPa. Use a precision regulator to control the air pressure. If the air pressure is below 0.24 MPa, the spindle may not extend fully.

• When supplying air (with the spindle extended), up to 3L/min of air will be emitted from the tip of the dust seal.

• The measuring ability of the device changes according to the air pressure of the air supply. Refer to "Specifications" for details.

NOTICE

If the air supply pressure exceeds 0.5 MPa, the sensor head may become damaged.

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