Proface GP4500T/GP4501T Series Modules

Technical Dossier

Product Details And Specifications

Proface GP4500T/GP4501T Series: Comprehensive Module Range and Technical Overview

The Proface GP4500T/GP4501T series represents one of the most widely deployed Human-Machine Interface (HMI) platform families in global heavy industry. Manufactured by Proface (a Schneider Electric brand, formerly Digital Electronics Corporation), these panels are installed across petrochemical refineries, nuclear power auxiliary systems, offshore platforms, pharmaceutical batch control lines, and steel mill process control stations. The GP4501T sub-series specifically targets mid-range operator interface requirements: 10.4-inch TFT LCD displays, resistive touch input, and dual-port Ethernet connectivity, making it a standard specification in DCS front-end operator stations and SCADA visualization nodes throughout Asia-Pacific, Europe, and the Americas.

The Evolution of GP4501T Architecture

The GP4000 platform succeeded the GP3000 series (introduced circa 2003), which itself replaced the GP2000 line. The architectural transition from GP3000 to GP4000 introduced a 32-bit RISC processor core, expanded SRAM from 32 MB to 128 MB, and migrated the runtime environment to a Linux-based OS, replacing the proprietary GP-OS kernel. The GP4501T variant added dual Ethernet ports (100BASE-TX) and a USB 2.0 host interface absent in earlier GP4000 base models.

Compatibility considerations span three generations: GP3000-era projects require migration via Proface's GP-Pro EX conversion utility; GP4000 projects are directly portable across the GP4500T/GP4501T/GP4502T sub-families with minor resolution adjustments. The GP4501T uses the same backplane connector pinout as the GP4500T, enabling direct panel swap in most enclosure installations. Communication drivers support Mitsubishi MELSEC, Siemens S7, Allen-Bradley DF1/EtherNet/IP, Modbus RTU/TCP, and over 1,200 additional PLC protocols natively.

As of 2024, the GP4501T series has entered the mature/end-of-active-production phase. Proface continues to provide firmware updates and technical documentation, but new unit lead times from distribution channels have extended significantly. Long-term maintenance support (LTMS) for installed base is the primary procurement driver for this series.

GP4501T Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified GP4500T/GP4501T series module range. Each entry reflects a distinct hardware configuration or accessory within the platform ecosystem.

PFXGP4501TAA: 10.4" TFT, 640x480, resistive touch, dual Ethernet, USB host, 24VDC, standard bezel
PFXGP4501TAAD: GP4501TAA with factory-installed DeviceNet slave communication unit
PFXGP4501TAAS: GP4501TAA with factory-installed CC-Link slave communication unit
PFXGP4501TAAP: GP4501TAA with factory-installed PROFIBUS-DP slave unit
PFXGP4501TAD: 10.4" TFT, 640x480, resistive touch, single Ethernet, USB host, 24VDC
PFXGP4500TAA: 10.4" TFT, 640x480, resistive touch, single Ethernet, no USB host, 24VDC (base model)
PFXGP4500TAAD: GP4500TAA with DeviceNet slave communication unit installed
PFXGP4500TAAS: GP4500TAA with CC-Link slave communication unit installed
PFXGP4502TAA: 10.4" TFT, 800x600 SVGA, resistive touch, dual Ethernet, USB host, 24VDC
PFXGP4502TAAD: GP4502TAA with DeviceNet slave communication unit installed
PFXGP4503TAA: 12.1" TFT, 800x600, resistive touch, dual Ethernet, USB host, 24VDC
PFXGP4503TAAD: GP4503TAA with DeviceNet slave communication unit installed
PFXGP4601TAA: 10.4" TFT, 640x480, resistive touch, dual Ethernet, USB host, AC100-240V input
PFXGP4601TAAD: GP4601TAA with DeviceNet slave communication unit installed
PFXGP4602TAA: 10.4" TFT, 800x600, resistive touch, dual Ethernet, USB host, AC100-240V input
PFXGP4602TAAD: GP4602TAA with DeviceNet slave communication unit installed
PFXGP4603TAA: 12.1" TFT, 800x600, resistive touch, dual Ethernet, USB host, AC100-240V input
PFXGP4301TAD: 8.4" TFT, 640x480, resistive touch, single Ethernet, USB host, 24VDC (compact sub-series)
PFXGP4301TAAD: GP4301TAD with DeviceNet slave communication unit installed
PFXGP4201TAD: 5.7" TFT, 320x240, resistive touch, single Ethernet, USB host, 24VDC (entry sub-series)

Sourcing Hard-to-Find & Obsolete GP4501T Parts

DriveKNMS maintains a dedicated inventory program for GP4500T/GP4501T series units and accessories. As this platform transitions from active production to long-term maintenance phase, procurement through standard distribution channels becomes unreliable. DriveKNMS sources verified units through authorized surplus channels, factory-refurbished stock, and controlled de-installation programs from decommissioned plant assets.

For obsolete sub-variants (e.g., PFXGP4501TAAS CC-Link units, PFXGP4601TAAD DeviceNet AC-input panels), DriveKNMS maintains a cross-reference database linking discontinued part numbers to available functional equivalents or certified refurbished units. All sourced units are accompanied by full traceability documentation including origin records and test certification.

Customers operating extended plant lifecycles (15-25 year horizons common in nuclear auxiliary, chemical, and refining sectors) are advised to establish blanket purchase agreements or consignment stock arrangements for critical GP4501T operator stations to mitigate unplanned downtime risk.

Quality Control for the GP4501T Range

GP4501T panels present specific test requirements due to their integrated backplane bus architecture and multi-protocol communication stack. DriveKNMS applies the following verification protocol to all GP4501T units processed through its facility:

Power-on functional test: 24VDC input verification, boot sequence completion, GP-Pro EX runtime initialization confirmation.
Display calibration: Full-screen pixel integrity check (dead pixel mapping), backlight luminance measurement against factory specification (400 cd/m2 nominal).
Touch panel linearity test: 9-point resistive touch calibration with deviation measurement; units exceeding +/-2mm deviation are rejected.
Ethernet port test: Both RJ-45 ports tested at 100BASE-TX with loopback frame integrity verification.
USB host port test: USB 2.0 enumeration and data transfer rate verification.
Communication unit test (where fitted): DeviceNet/CC-Link/PROFIBUS slave units tested against a live master node for address assignment and cyclic data exchange.
Burn-in cycle: 48-hour continuous operation at 40 degrees C ambient with periodic screen refresh and communication polling to surface latent failures.
Final inspection: Physical inspection of bezel, connector integrity, and label legibility prior to packaging.