Keyence GT-76AP PNP Sensor Amplifier Unit

Keyence GT-76AP PNP Sensor Amplifier Unit

Product Introduction

The GT-76AP is a general purpose digital contact sensor amplifier unit from the Keyence GT series. It serves as an expansion unit and mounts into a panel cutout beside a main amplifier. With a display range of -99.999 to 999.999 and 1 µm resolution, it supports accurate dimensional inspection. The unit samples at 2,000 times per second, so it captures rapid changes on moving workpieces. Additionally, the PNP open collector output provides HIGH, GO, and LOW judgment signals. Engineers often choose the GT-76AP when they need extra measurement channels with positive logic output and front-panel visibility.

Technical Specifications

The Keyence GT-76AP offers a display range from -99.999 to 999.999. Its display resolution reaches 1 µm, which suits fine measurement tasks. Sampling speed runs at 2,000 times/second, enabling real-time data capture. Users can select response times of hsp (1.5 ms), 5 ms, 10 ms, 100 ms, 500 ms, 1 s, or 5 s. This flexibility helps balance speed and stability for different materials.

For communication, the unit has no built-in ports or protocols. However, communication expansion is possible through optional GT series communication units sold separately. This design keeps the expansion unit compact while allowing future network upgrades.

Electrical Parameters

The GT-76AP operates on 12 to 24 VDC with ripple (p-p) of 10 % or less. In normal mode, power consumption is 1,140 mW (95 mA) or less at 12 V, and 1,200 mW (50 mA) or less at 24 V. In power-saving (Eco) mode, consumption drops to 600 mW (50 mA) or less at 12 V, and 840 mW (35 mA) or less at 24 V. The output type is HIGH/GO/LOW PNP open collector with a maximum of 50 mA (40 V or less). Residual voltage stays at 1 V or less, and N.O./N.C. selection is available.

Mechanical and Environmental Data

Operating temperature ranges from -10 to +55 °C with no freezing. Meanwhile, relative humidity stays between 35 and 85 % RH with no condensation. The unit weighs approximately 110 g including the power cable. Storage temperature, protection rating, and exact dimensions are not available from the official specification. Therefore, installers should allow adequate clearance behind the panel for cable routing and heat dissipation.

Installation Guide

First, confirm that a compatible main unit already sits in the panel. Next, cut a standard opening for the GT-76AP and insert it from the front. After that, secure the unit with the supplied brackets and connect the expansion cable to the main amplifier. Moreover, wire the PNP output to the PLC or controller input according to the N.O./N.C. setting. Finally, set the response time and display parameters through the front keys. Always power down before wiring to avoid damage.

Packaging List

• One Keyence GT-76AP digital contact sensor amplifier expansion unit

• One power cable

• Panel mounting brackets and hardware

• Installation guide

FAQ

Q1: What is the main function of the GT-76AP?
A: The GT-76AP amplifies signals from GT series contact sensor heads. It adds measurement channels to a main unit and provides HIGH/GO/LOW judgment outputs.

Q2: Can the GT-76AP work without a main unit?
A: No. This expansion unit requires a compatible GT series main amplifier. It cannot operate alone in the panel.

Q3: Does the GT-76AP include built-in communication ports?
A: No. The unit has no built-in ports or protocols. You can add communication through optional GT series communication units.

Q4: What response times can I select?
A: You can choose hsp (1.5 ms), 5 ms, 10 ms, 100 ms, 500 ms, 1 s, or 5 s. This range covers both fast and stable measurement needs.

Q5: How is the GT-76AP shipped?
A: We ship this unit through Fedex, UPS, or DHL. Packaging protects the amplifier, cable, and mounting hardware during transit.