Proface LT3301-L1-D24-C Integrated Touch Controller

Proface LT3301-L1-D24-C Integrated Touch Controller (with PLC Function Human-Machine Interface) Detailed Explanation

Model Meaning and Basic Positioning

1. Detailed Explanation**

– LT3301: Model of the LT3000 series that integrates HMI (Human-Machine Interface) and logic controller; `L1` indicates a 5.7-inch 16-level grayscale monochrome screen, **without Ethernet port**; `D24` represents the power supply specification of DC24V; the suffix `C` indicates **PNP source output** (the K model of the same series has NPN drain output, and the two cannot be directly replaced) Pro-face.
– Product Positioning: Pro-face of the classic integrated machine from Pro-face, integrating touch screen display operation + PLC logic control, with built-in native IO, small devices do not need to be paired with PLC separately, simplified cabinet layout, the original factory has discontinued production, existing equipment is mainly replaced with spare parts.
– Pro-face. Table

| Parameter Item | Specification Details | | — | — |
| Screen Configuration | 5.7-inch monochrome LCD, 16-level grayscale, resolution 320×240 (QVGA), resistive single-point touch screen; LED backlight life ≥ 50,000 hours, brightness 8-level adjustable Pro-face |
| Power Supply Range | DC 19.2~28.8V (nominal 24V), total machine power consumption ≤ 17W |
| Built-in IO | 16-point digital input + 16-point PNP digital output; 2 channels of multiplexed high-speed channels, support high-speed counting, pulse/PWM output; up to 3 EX modules can be expanded, or 63 CANopen sites can be mounted, total IO can be expanded to 80 points |
| Interface Configuration | 1 RS485 composite serial port (RS232C/RS422/485), 1 USB-A host port; no network port, no native CANopen onboard port |
| Program Storage | Flash 132KB, equivalent maximum programming steps 60,000 steps, compatible with GP-Pro EX configuration software for integrated screen and ladder logic development |
| Environmental Tolerance | Operating temperature 0~50℃, passed industrial vibration test; panel embedded installation, suitable for regular industrial cabinet scenarios |

Core Function Features

1. Integrated Control and Display**: Picture configuration and PLC ladder programming are completed in the same software, eliminating the need for independent PLC procurement and wiring, suitable for packaging machinery, small processing equipment;
2. High-speed Motion Control**: Built-in pulse output channel, can directly drive stepper/servo motors to achieve simple positioning;
3. Flexible Expansion**: External EX IO module, CANopen bus site, can easily expand measurement points; USB port can copy engineering programs, connect external storage devices;
4. General Serial Port Communication**: Through RS485 connect to ABB, GE, etc. mainstream PLC, temperature control instruments (such as Rosemount 248 transmitter) for network data collection.

Typical Application Scenarios

Small packaging machines, machine tool auxiliary equipment, single machine workstations on assembly lines, small pump station control cabinets; can be connected to previously queried ABB AC31 module, GE RX3i power supply, Bendix monitoring card to build a complete self-control link.

Purchase and Maintenance Key Points

Spare Parts Replacement

Strictly match the complete model `LT3301-L1-D24-C` (PNP output), do not mix use of K series NPN models; prioritize purchasing new inventory / compliant refurbished parts for discontinued models.

Common Fault Troubleshooting

1. Screen not lit: prioritize checking 24V power supply voltage fluctuation, connection terminal loosening;
2. IO output failure: distinguish PNP wiring polarity, compare NPN wiring logic;
3. Serial port communication disconnection: check 485 bus terminal resistor, station number and baud rate parameters;

Installation Tips

Stay away from excitation cabinets, strong interference sources of frequency converters, shield and ground the communication cables throughout the process.

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