KEYENCE GT User Manual

Multipurpose Digital Contact Sensor

457GB

Setup Functions

 Set the current value to “0”

1. Set the master target which should be “0”.

GT-70A

Series Setting Guide

2. Press the [PRESET] button.

Amplifier Display

 Names of the part of the amplifier

Detection level indicator

[SET] button

Timing input indicator

 Digital LED Display

The main display can be switched by pressing the left/right arrow buttons.

Digital LED display Status indicator Arrow buttons

Bank indicator

Bar LEDs

High position indicator/ Low position indicator

Preset indicator

[MODE] button

PV indicator

3. The current value would be set to “0”.

 Set the HIGH and LO tolerance.

1. Press the left/right arrow buttons until the [HIGH]/[LO] setting display appears.

2. Input the HIGH or LO tolerance by pressing the up/down arrow buttons.

3. The HIGH and LO tolerance would be set.

 Setting the Key Lock

1. Press the MODE and the up arrow button for at least 2 seconds.

Master workpiece

HIGH setting value display LOW setting value display

1. P.V. value display

6. Preset value setup display

5. LOW setting value display

4. HIGH setting value display

P.V. : Displays a value used for output judgment. Calc : Displays a calculated value when used. R.V. : Displays the raw, actual detection value. HI : Displays the HIGH setting value. LOW : Displays the LOW setting value. PRESET : Displays the value which would be set when the [PRESET] button is pressed.

2. Calculated value display

3. R.V. value display

2. The Key Lock display would appear.

 Canceling the Key Lock

1. When the Key Lock is set, press the MODE and the up arrow button for at least 2 seconds.

Keylock display

2. The Key Lock would be cancelled.

Keylock cancel display

 Initializing the sensor

1. Press the SET button 5 times while pressing the MODE button.

2. “rSt.no” would appear, press the up/down arrow button and select “rSt.YES”.

Function setting mode

 How to enter the Function setting mode

1. Press the MODE button for at least 2 seconds.

[MODE] button

3. Press the MODE button. The sensor would be initialized.

 Changing the bank (program)

1. Press the up/down arrow button while pressing the MODE button.

The bank indicator is turned off.

The bank indicator 1 is lit in green.

The bank indicator 2 is lit in green.

The bank indicator 3 is lit in green.

While holding down [MODE], press [Up].

While holding down [MODE], press the [Up].

2. The bank (program) would be switched to another one. Each bank (program) will have an own HIGH/LOW/PRESET setting value.

Main screen (P.V. value display)

2. Press the left/right arrow button and select the function number.

 01 Detection mode

Set the detection mode from [Standard], [NG hold], [Peal hold], [Bottom hold] or [Peak to peak] mode.

 02 Response time

Set the response speed.

 03 Timing type

Set the timing time from [External input], [Rising edge] or [Falling edge]. Only available when is set to [Standard], [Peal hold] or [Bottom hold].

 04 Self timing level

Set the self timing level. Only available when is set to [Rising edge] or [Falling edge].

 05 Self timing delay type

Set how the value is decided after the self timing is input, from [Static hold] or [Delay timer]. Only available when is set to [Standard], and is set to [Rising edge] or [Falling edge].

 06 User specified delay time

Set the delay time used for . Only available when is set to [Delay timer].

 07 Static hold delay stability criterion

Set how the decide the range, which is used to judge if the value is stable or not, from [Default] or [User]. Only available when is set to [Static hold].

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