1. Introduction
The Pro-face PFXLT3300TADC, also known as the LT3300-T1-D24-C RTG Class2, represents the latest generation of Pro-face's highly regarded LT3000 series of industrial touch screen HMIs. Engineered for precision, durability, and seamless integration, this 3.5-inch color touch screen is the ideal operator interface for a wide range of industrial automation applications – from packaging and material handling to machine tool control and process monitoring.
With its compact design, rugged construction, and advanced connectivity features, the PFXLT3300TADC delivers the performance and reliability that modern manufacturing environments demand.
2. Key Specifications
| Parameter | Specification |
|---|---|
| Model | PFXLT3300TADC (LT3300-T1-D24-C) |
| Display Size | 3.5 inches |
| Display Type | Color TFT LCD – STN (Super-Twisted Nematic) |
| Resolution | 320 × 240 pixels (QVGA) |
| Color Depth | 16-bit (65,536 colors) |
| Touch Panel | Analog resistive touch screen |
| Power Supply | 24V DC (nominal) |
| Current Consumption | 1.13A maximum |
| Certification | RTG Class2 |
| Operating Temperature | -10°C to +55°C |
| Storage Temperature | -20°C to +60°C |
| Protection Rating | IP65f (front panel – dust-tight and water-jet resistant) |
3. Display Excellence – Clarity in Any Environment
The 3.5-inch color TFT display delivers bright, high-contrast visuals with 65,536 colors, ensuring clear readability of alarms, process values, and graphical elements. The QVGA resolution (320×240) provides sufficient detail for compact HMI applications, including:
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Machine status overviews
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Real-time trend graphs
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Alarm lists
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Operator guidance screens
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Parameter input dialogs
Wide Viewing Angle: The STN technology provides excellent visibility from off-axis positions, allowing operators to view the screen from multiple positions – critical in control cabinets or crowded machine environments.
Brightness: The backlight delivers consistent illumination even in high-ambient-light conditions, eliminating the glare issues common with lower-grade displays.
4. Rugged Construction – Built for Industrial Survival
Industrial environments are unforgiving. The PFXLT3300TADC is built to withstand:
| Environmental Challenge | Protection Feature |
|---|---|
| Water and Dust | IP65f front panel rating – protected against low-pressure water jets and dust ingress |
| Temperature Extremes | Operating range -10°C to +55°C – suitable for un-conditioned factory floors |
| Vibration | Robust mechanical construction with secure mounting options |
| Electrical Noise | EMI/EMC compliant; reliable operation in electrically noisy environments |
Practical Impact: The IP65f front seal means operators can wipe down the screen with cleaning agents without risking moisture ingress – essential for food processing, pharmaceutical, and chemical applications where hygiene is paramount.
5. Connectivity and Communication
The PFXLT3300TADC offers flexible connectivity options to suit diverse control architectures:
| Port Type | Description |
|---|---|
| Serial Communication | RS-232C and RS-422/485 – compatible with a wide range of PLCs and controllers |
| Ethernet | 10/100BASE-TX (available on LT3000 series Ethernet variants) |
| USB Ports | USB Type-A and Mini-B for programming, data logging, and peripheral connection |
| SD Card Slot | Optional SD/SDHC memory expansion for data storage and recipe management |
Communication Protocols: The LT3000 series supports native communication drivers for major PLC brands, including Siemens, Allen-Bradley, Mitsubishi, Omron, and Modbus – ensuring plug-and-play connectivity with existing control systems.
6. Programming and Configuration – Simplified with Pro-face Software
The LT3000 series is programmed using Pro-face's GP-Pro EX software – a comprehensive, user-friendly development environment that significantly reduces engineering time.
GP-Pro EX Capabilities:
| Feature | Benefit |
|---|---|
| Drag-and-Drop Interface | Intuitive screen design – no complex coding required |
| Built-in PLC Drivers | 200+ communication drivers for major PLC brands |
| Multi-Language Support | Create screens in multiple languages – ideal for global equipment |
| Alarm Management | Configure alarm logs with time-stamped event history |
| Data Logging | Log process data to USB or SD card for quality analysis |
| Recipe Management | Manage multiple product settings – simplify changeovers |
| Remote Monitoring | Web server and FTP support for remote diagnostics |
Key Advantage: GP-Pro EX enables engineers to create complex operator interfaces quickly, reducing development time by up to 50% compared to traditional HMI programming approaches.
7. Compact Design – Maximizing Cabinet Space
With its compact footprint, the PFXLT3300TADC fits easily into space-constrained control panels and machine-mounted enclosures. The slim design allows for:
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Mounting in tight control cabinets
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Installation on machine arms or mobile equipment
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Integration into portable testing units
Panel Cutout Dimensions: Standard 92 × 92 mm panel cutout – compatible with most existing HMI mounting holes, simplifying retrofit projects.
8. Reliability – Designed for 24/7 Operations
Pro-face HMIs are renowned for their long-term reliability and low failure rates. The PFXLT3300TADC features:
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Solid-state construction – no moving parts to wear out
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Backlight life – rated for 50,000+ hours of continuous operation (approx. 5.7 years)
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Wide power tolerance – operates on 24V DC ±10% (protected against surges and transients)
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Auto-recovery – automatically restarts after power interruptions without user intervention
9. Typical Applications
The PFXLT3300TADC is ideally suited for:
| Industry | Application |
|---|---|
| Packaging | Machine controls, label applicators, sealing equipment |
| Material Handling | Conveyor systems, sorters, lift controls |
| Machine Tools |
