KEYENCE GT2-500 User Manual

WARNING

NOTICE

WARNING

NOTICE

30 N 100 N

1 N

AIR

Mist separator

Pressure source

Air filter

Solenoid valve

Precision regulator

Air supply part

Speed controller

Illustration 1 - Pneuma tic circuit

High-accuracy Digital Contact Sensor

GT2-500

■

Symbols

The following symbols alert you to matters concerning the prevention of human injury and product damage. Be sure to read these messages carefully.

Safety Information for GT2-500 Series

96M12757

Series Instruction Manual

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.

If the following conditions are encountered, immediately turn OFF the power. Continuing to use the GT2-500 Series under these abnormal conditions may cause equipment failure.

•

When water or foreign matter enters the controller

• When the GT2-500 Series is dropped or the housing is damaged

• When the GT2-500 Series produces smoke or an abnormal smell

• Do not use the GT2-500 Series with a voltage other than specified voltage, as this may cause fire, electric shock or equipment failure.

• Do not disassemble or modify the GT2-500 Series. This may cause fire or electric shock.

• Do not use this product for the purpose to protect a human body or a part of human body.

•

This product is not intended for use as explosion-proof product. Do not use this product in a hazardous location and/or potentially explosive atmosphere.

•

Be sure to turn OFF the power of the GT2-500 Series and any connected devices before connecting or disconnecting the cables. Otherwise, there may be a risk of damage.

•

Do not turn OFF the power while setting parameters. Otherwise, the settings may be partially or completely lost.

•

At startup and during operation, be sure to monitor the function performance of the GT2-500 Series.

• Do not modify the GT2-500 Series or use it in any way other than described in the specifications.

• The function performance of products used or modified in this way cannot be guaranteed.

•

When the GT2-500 Series is used in combination with other instruments, function performance may be degraded, depending on operating conditions and the surrounding environment. Use the GT2-500 Series after fully studying the effect of combined use with other instruments.

• Do not expose the GT2-500 Series and peripheral devices to sudden temperature change. This may cause condensation, damaging the equipment.

●

Environmental conditions

To use the GT2-500 Series properly and safely, do not install the GT2-500 Series in the following locations. Use of this equipment in an improper environment may cause equipment failure.

•

Locations outside

•

Locations with high humidity, a large amount of dust, or poor ventilation

•

Locations where the temperature rises excessively due to direct sunlight, etc.

•

Locations near corrosive or flammable gas

•

Locations where the GT2-500 Series is directly subjected to vibration or impact

•

Locations where water, oil or chemicals may come into contact with the GT2-500 Series

•

Locations where static electricity may easily occur

●

Noise countermeasures

Installation near a source of electrical noise such as a power source or a power cable may cause malfunction or failure of the equipment. Adopt appropriate countermeasures against noise by using a noise filter or wiring cables in separate ducts, attaching insulation to the amplifier or the sensor head, etc.

●

Handling of the sensor head

•

The GT2-500 Series and peripheral devices are precision machines. Do not drop, or cause any other impact to these devices. 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 GT2-P12KL(F)/P12L(F)/PA12K/PA12 spindle can rotate a maximum of about 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.

•

Although the GT2-PA12K/PA12/H12K/H12KF/H12/H12F/ H32/H50/A12K/A12/A32/A50 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.

•

Although the GT2-P12K(F)/P12(F) has a protection rating of IP67G/NEMA Type 13, some types of oil may damage the device.

•

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 dust seal 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

■

Other precautions

●

Effects of surrounding air temperature

To use the GT2-500 Series with high accuracy, do not use the GT2-500 Series in an environment in which the surrounding air temperature changes sharply. It will take about 40 minutes for the 12 mm type, and 60 minutes for the 32 mm/ 50 mm type for the internal temperature to stabilize when the surrounding air temperature has changed by 10°C.

●

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 when using the 12 mm type and about 10 minutes when using the 32/50 mm type after the power turns on before starting operation.

●

GT2-PA12K/PA12 (See illustration 1 for the pneumatic circuit)

•

This model uses a single-acting cylinder. The internal spring will return the sensor head to its home position.

•

The air supply hole cannot be removed.

•

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.

•

Before connecting the air tube to the air supply hole, be sure to blow plenty of air through the pipes (flushing) to remove any foreign matter.

•

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" (page 9) for details.

●

GT2-A12K(L)/A12(L)/A32/A50 (See illustration 1 for the pneumatic circuit)

•

This model uses a single-acting cylinder. The internal spring will return the sensor head to its home position when air pressure is removed. DO NOT supply air to the exhaust valve.

•

The air cylinder cannot be removed.

•

Use the regulator to supply the stable air pressure to the sensor head.

•

Use the air filter and mist separators to supply dry air. Empty the drainage from the filter regularly, before it exceeds the specified line.

•

Make sure that the air pressure of the air supply is constant and in the range of 0.25 MPa to 0.5 MPa.

•

The coupling socket and the exhaust valve that are supplied with the air cylinder are dedicated for this product. They cannot be removed.

●

Power su pp ly

•

Noise superimposed on the power supply may cause malfunction. Be sure to use the DC stabilized power supply provided with an insulation transformer.

•

In the case of a commercially available switching regulator, be sure to ground the frame ground terminal or the ground terminal.

●

About dust boot

When the dust boot of the sensor head is damaged, use an optional dust boot sold separately (For GT2-P12K(F)/P12(F)/H12K(F)/H12(F)/A12K/ A12: OP-84332 (Material: NBR (attached when shipped)). For GT2P12K(F)/P12(F): OP-87859 (Material: Fluororubber). For GT2-H32/A32: OP-84459 (Material: NBR (attached when shipped)). For GT2-H50/A50 (Material: NBR (attached when shipped)).) Attach the dust boot correctly. The dust boot may deteriorate, depending on the environment it is used in. In this case, replace the dust boot regularly. * Do not use the dust boot on the GT2-P12KL/P12L/PA12K/PA12/

H12KL(F)/H12L(F)/H32L.

Precautions on Regulations and Standards

■

CE Marking

●

EMC Directive (2004/108/EC)

•

Applicable standard EMI: EN61326-1, Class A

•

This product is designed for use in industrial environments.

Remarks： This specification does not give any guarantee that the end-product with this product incorporated complies with the essential requirements of EMC Directive. The manufacturer of the end-product is solely responsible for the compliance on the end-product itself according to EMC Directive.

EMS: EN61326-1

GT2-500-M-E

Package Contents

NOTICE

GT2-500 (Main unit) GT2-550 (Expansion unit)

Amplifier x 1 Amplifier x 1Instruction manual x 1

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

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

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

NOTICE

(1)

(2)

(3)

End unit

Amplifier

Connector

DL Series Communication Unit

Amplifier connection connector

DL Series Communication Unit

Mounting the Amplifier and Wiring

The product package of each model should include the following items. Check that all items are included before use.

■

Amplifier parts

●

Amplifier

■

Sensor head parts

●

Sensor head

GT2-P12K/P12 GT2-P12KL/P12L GT2-PA12K/PA12

Sensor head x 1 Sensor head x 1 Precautions for handling x 1 Precautions for handling x 1

GT2-H12KF/ H12F GT2-H12KLF/H12LF

Sensor head x 1 Precautions for handling x 1 Nut x 1 Key spanner x 1

GT2-H12K/H12

Sensor head x 1 Sensor head x 1 Precautions for Handling x 1 Precautions for Handling x 1

GT2-H32 GT2-H32L

Sensor head x 1 Precautions for handling x 1 Nut x 1 Key spanner x 1

GT2-H12KL/H12L

GT2-P12KF/P12F

Sensor head x 1 Precautions for handling x 1 Nut x 1 Key spanner x 1

GT2-A12K/A12

Sensor head x 1 Precautions for handling x 1

GT2-A32

Sensor head x 1 Precautions for handling x 1

GT2-A12KL/A12L

Sensor head x 1 Precautions for handling x 1

■

Mounting the amplifier

●

GT2-500 (Main unit)

Fit the tab of the lower part of the main unit to the DIN rail. While inserting the main unit in the direction of Arrow (1), push the body down in the direction of Arrow (2).

To detach the amplifier, while pushing the main unit in the direction of Arrow (1), pull the body up in the direction of Arrow (3).

●

GT2-550 (Expansion unit)

The expansion unit can only be used in addition to the main unit. Up to 2 expansion units can be added to one main unit.

• When adding an amplifier (expansion unit), be sure the power of both main and expansion units is OFF before operation. Mounting when the power is ON may damage the equipment.

• Be sure to completely connect an expansion unit to a main unit. Oblique or improper connections may damage the equipment.

Mount the expansion unit to be added to the DIN rail.

Push and fix the expansion unit to the connector of the main unit until it clicks.

Mount the end units (OP-26751: a set of two pieces) sold separately on both sides of the amplifiers (the main unit and the expansion unit), then fix the end units with screws on the upper part of each end unit (2 points x 2 units).

The mounting method of the end unit is the same as that of the amplifier.

Sensor head x 1 Sensor head x 1 Precautions for Handling x 1 Precautions for Handling x 1

GT2-H50

Sensor head x 1 Precautions for Handling x 1

●

Sensor head connection cable

GT2-A50

Sensor head x 1 Precautions for Handling x 1

• The M8 L-shaped connector type cable cannot be used with the GT2-H32(L)/H50/A32/A50.

• When a protection rating of IP67G and NEMA Type 13 enclosure is required for GT2-P12K(F)/P12(F), or a protection rating of IP67G is required for GT2PA12K/GT2-PA12 use an M8 oil-resistant straight connector type cable. Other cables do not meet the IP67G protection rating or NEMA Type 13 enclosure rating.

We have taken all possible precautions in packaging; however, if any parts are found to be defective or broken, please contact your nearest KEYENCE sales office.

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Connecting to DL Series Communication Units

For details on communication methods, see the DL Series manuals.

Attach the DL Series to the DIN rail and connect it to the amplifier.

Refer to the illustration on the right to check that the sensor amplifier connection connector (for attaching to DIN rails) on the side of the DL Series Communication Unit is not bent. Connecting to the sensor amplifier with a bent connector can lead to equipment damage.

Attach 1 end unit (OP-26751: 2 units) to the side of the amplifier, and 1 to the side of the DL Series Communication Unit. Attach using the screws on top of the end units (2 screws on each unit).

End unit

GT2-500-M-E

End unit

●

20 - 30 V DC

Brown

Blue

Operation indicator

Relay connector

Cable connector

Dust boot

Mounting fixture

Dust boot

※

Spindle

Contact

Dust boot

●

GT2-P12K(L)/P12(L)

●

GT2-P12KF/P12F

Cable between the sensor head and relay connector

●

GT2-PA12K/PA12

Relay connector

Cable connector

Cable between the sensor head and relay connector

Operation indicator

Cable between the sensor head and relay connector

Mounting fixt ure

Operation indicato r

Contact

Spindle

Air supply hole

Dust seal

*1 A mounting bracket is attached to

GT2-H12KF/H12F/H12KLF/H12LF.

*2 Not included in the GT2-H12KL/H12L/H12KLF/H12LF.

Contact

Head indicator

Cable connector

Mounting fixture*

Dust boot*

*3 Not included in the GT2-H32L.

Contact

Head indicator

Cable connector

Mounting fixture

Dust boot*

Contact

Dust boot

Spindle

Dust boot

Dust boot*

Dust boot

Coupling socket

Air cylinder

Head indicator

Cable connector

Exhaust valve

Spindle

Contact

Mounting fixture

Contact

* Not included in the GT2-A12KL/A12L.

Arrow

Unlocked

Click

Lock cover

Lock lever

Locked

Lock cover

Power cable

The power cable is as follows: GT2-500 (Main unit)

Connecting and Mounting the Sensor Head

■

Names of parts of the sensor head

* Not included in the GT2-P12KL/P12L.

●

GT2-H12K(L)(F)(LF)/H12(L)(F)(LF)/H32(L)/H50

■

Connecting the sensor head connection cable

●

For GT2-P***/PA***

Insert the sensor head connection cable into the cable connector on the relay connector cable.

Secure the connector with the sensor head connection 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 If the connection is not tight enough, the connector may be loosened by vibration or other causes,

・

m*)

leading to a connection failure. (* After tightening it firmly by hand, use pliers or

NOTICE

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.

●

For units other than GT2-P***/PA***

Insert the sensor head connection cable into the cable connector of the sensor head.

●

GT2-A12K(L)/A12(L)/A32/A50

Secure the connector by rotating the grooved portion.

• When connecting the connector, be sure to insert it straight, and tighten it securely. (Recommended

・

m*)

NOTICE

tightening torque: 0.4 to 0.5 N 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 firmly by hand, use pliers or other tools to rotate it about 30° for further tightening.)

• The M8 L-shaped connector (GT2-CHL*M) cannot be used with the GT2-H32(L)/H50/A32/A50.

To disconnect the sensor head connection cable, reverse the steps above.

■

Connecting the amplifier

Remove the lock cover of the connector of the sensor head connection cable, and insert the sensor head connection cable into the connector on the side of the amplifier until it clicks.

To disconnect the sensor head connection cable,

NOTICE

Put the lock cover on the connector, and lock the lock cover.

press and hold the lock lever on the side of the connecter and disconnect the cable.

GT2-500-M-E

■

NOTICE

Tightening sleeve

Key wrench

Nut

Optional head mounting bracket A (OP-76874)

Tightening sleeve

Key wrench

Nut

Optional head mounting bracket C (OP-84396)

●

GT2-P12K(L)/P12(L)/PA12K/PA12/ H12K(L)/H12(L)/A12K(L)/A12(L)

●

GT2-H32(L)/H50/A32/A50

NOTICE

When mounting the GT2-H32L facing upward, be sure to use the mounting holes on the side of the sensor head. If the sensor head is mounted using head mounting bracket D, the spindle may not fully extend.

Mounting illustration

φ10

+0.005

+0.1

Nut mounting side

*1.

For head mounting bracket C or

flange types (model names that end in F)

*2. Processing accuracy : ±0.05

φ10 G8

( )

+0.005

+0.027

0.5 to 1.0

5.5 to 11.3

45°

±1°

φ0.025

(Unit: mm)

Tightening sleeve insertion side

●

GT2-P12K(L)/P12(L)/PA12K/PA12/ H12K(L)/H12(L)/A12K(L)/A12(L)

●

GT2-H32(L)/H50/A32/A50

Tightening

sleeve

Nut

Chamfered side

Sensor head

Chamfered side

Nut

Key wrench

Dust boot

Wrench

NOTICE

8.5



Make sure that the metal plating mounting bracket F attaches to is made of SUS (SUS303 reco mmended) and is at least 5 mm thick.

•

GT2-P12K(L)/P12(L)/PA12K/PA12

Mounting the sensor head

●

Mounting directly to the jig

Before mounting the sensor head directory to the jig, create a hole in the jig. Attach the sensor head using the optional head mounting bracket sold separately. A mounting bracket is provided with the GT2-P12KF/P12F/H12K(L)F/H12(L)F as standard. Attach it with the supplied nut.

Optional head mounting bracket D (OP-84327)

Tightening sleeve

Key wrench

Cut the jig to create a sensor head mounting hole referring to the illustration below.

Nut

Rotate the dust boot so that the side line is straight. (Models other than GT2-PA12K/PA12)

Check with the spindle pushed in.

NOTICE

●

Using mounting bracket F

Refer to the illustration below and cut the jig to create a sensor

If the dust boot is not straight, it becomes easier to damage when the spindle is moved.

head mounting hole.

Loosen the screw on the side of mounting bracket F using the supplied hexagonal wrench.

0.5 to 1.0

±1°

45°

Tightening sleeve insertion

+0.1 +0.006

φ14

Insert the tightening sleeve into the hole (from the Chamfered side),

side

φ0.025

and loosely tighten with the nut.

In the illustration on the left, if the nut is fully tightened when the sensor head is not yet inserted, the fixture will become deformed.

Insert the sensor head in the tightening sleeve. While securing the tightening sleeve with the included key wrench, tighten the nut with a separate wrench.

Nut mounting side

5.5 to 11.3

(Unit: mm)

Align mounting bracket F with the hole made in step 1 and secure it using the supplied hexagonal wrench.

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.

• Make sure that the dust boot does not become damaged during the procedure.

• 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.

• Cannot be used with GT2-P12KF/P12F/H***/A***.

●

Mounting on the side of a surface

When mounting to the side of a GT2-P12K(L)/P12(L)/PA12K/PA12/ H12K(L)/H12(L)/A12K(L)/A12(L) unit, use the optional head mounting bracket B (OP-76875).

Mounting illustration

Optional head mounting bracket B (OP-76875)

Tightening sleeve Nut Mounting bracket

Tightening the nut while fixing the sensor head may lead to damage.

• The tightening torque for mounting bracket A (OP-

GT2-500-M-E

•

76874), mounting bracket C (OP-84396), and the nuts supplied with GT2-H12K(L)F/H12(L)F/P12KF/ P12F is between 5 and 7 N tightening torque is 5 N between 15 and 18 N the GT2-A32/A50) to head mounting bracket D (OP-

84327). Use the wrench that matches the nut width. Care must be taken not to damage the dust boot when tightening.

・

m (the recommended

・

m). Apply tightening torque

・

m (20 to 23 N・m when using

NOTICE

Tightening sleeve

Mounting bracket

Nut

Notice the correct angle of the tightening sleeve.

Nut

Wrench

Dust boot

M4 screws

Mounting illustration

M4 tap

23 ± 0.15 mm

M4 screws (Mounting hole dimensions)

Air tube

Air supply hole

Relay connector

Air tube

Coupling socket

Insert the tightening sleeve into the mounting bracket from the side with a depression, and loosely tighten with the nut.

• If the sleeve is inserted from the wrong side, the sensor head cannot be secured.

• Strongly tightening the nut without the sensor head inserted may deform the tightening nut.

• Head mounting bracket B cannot be used in combination with head mounting bracket C (OP-

84396) or head mounting bracket D (OP-84327).

Insert the sensor head into the tightening sleeve, and tighten the nut with a wrench.

Tightening the nut while fixing the sensor head may lead to damage.

• Apply a tightening torque of 5 to 7 N recommended tightening torque is 5 N wrench that fits the width of the nut.

・

m (the

・

m). Use the

• Care must be taken not to damage the dust boot when tightening.

Secure the sensor head with M4 screws.

Mount the sensor head with the model label on top. For GT2-P12K(L)/ P12(L)/PA12K/PA12, mount so that the head indicator is on top.

■

Installing the Air Tube

●

Compatible air tube

Use a tube with the following specifications.

Item Description

Recommended tubing material Urethane



Tubing size

●

How to Attach/Detach the Air Tube (GT2-PA12K/PA12)

Attaching the air tube

• Insert the air tube into the air supply hole on the relay connector.

Outer diameter

Inner diameter

4 mm



2.5 mm

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

NOTICE

• 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.

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.

• Never apply tightening torque over 1.4 N・m.

• Care must be taken not to damage the dust boot when tightening.

Rotate the dust boot so that the side line is straight. (Models other than GT2-PA12K/PA12)

Check with the spindle pushed in.

If the dust boot is not straight, it becomes easier to damage when the spindle is moved.

●

Mounting to the mounting holes

The mounting holes on the side of the GT2-H32(L)/H50/A32/A50 unit can be used to install to the side of a table or other surface.

• Roughness of the mounting surface may cause the sensor to tilt, and sufficient accuracy may not be obtained. When performing a high-accuracy measurement, use a jig to mount the sensor head.

"Mounting directly to the jig" (page 4)

• Apply tightening torque between 1.2 and 1.5 N

NOTICE

●

How to Attach/Detach the Air Tube (GT2-A12K(L)/A12(L)/A32/A50)

Attaching the air tube

• Feed the tubing into the socket until it bottoms out (about 1/2").

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

The socket will ensure a tight seal around the tubing.

• 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 (see figure below).

NOTICE

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

・

Tube end

GT2-500-M-E

+ 11 hidden pages