Lauer LCA Terminal 640.1

Product Overview

The Lauer LCA Terminal 640.1 is a high‑performance operator workstation designed for complex human‑machine interface tasks in industrial automation. It combines a large, high‑resolution graphic display with a comprehensive keypad and a powerful embedded controller, providing a versatile platform for process visualization, machine control, and data management. The terminal is built for panel mounting in control cabinets and is suitable for demanding applications in the automotive, chemical, and food processing industries.

Display and Visual Interface

The terminal is equipped with a 12.1‑inch TFT colour display with XGA resolution (1024 x 768) and a bright LED backlight delivering 500 cd/m² luminance. The screen offers a wide viewing angle (85° in all directions) and a contrast ratio of 700:1, ensuring excellent readability even under challenging lighting conditions. The display supports full 16.7 million colours and can show complex process graphics, trends, and animated symbols. An anti‑glare hard coating protects the screen from scratches and reflections. An optional resistive touchscreen is available (field‑installable).

Keypad and Operator Input

The front panel includes a 32‑key membrane keypad with a numeric block (0‑9, decimal, sign), 16 programmable function keys (F1‑F16) with integrated multi‑colour LEDs for status feedback, and dedicated navigation keys (arrows, Home, End, Page Up/Down). All keys provide tactile feedback and are rated for over 1 million actuations. The keypad is backlit with adjustable intensity, and the overlay is IP65 rated for protection against water, dust, and cleaning agents.

Processor and Memory

Powered by a 32‑bit ARM Cortex‑A8 processor running at 600 MHz, with 256 MB of DDR2 RAM and 512 MB of NAND flash for operating system and application storage. The terminal runs a real‑time operating system (RTOS) that ensures fast screen switching and deterministic response times. An SD card slot (max 32 GB) is available for data logging, screen backups, and firmware updates. A hardware watchdog timer provides automatic system reset in case of software lock‑up.

Communication and Connectivity

• Ethernet: 1x 10/100 Base‑T (RJ45) with Modbus TCP and LAUER Service Protocol support.

• Serial Ports: 2x RS‑232 (9‑pin D‑sub), one of which can be software‑configured as RS‑422/485.

• USB: 1x USB 2.0 (Type‑A) for data transfer and keyboard/mouse connection.

• Fieldbus (optional): Profibus DP, CANopen, or DeviceNet via plug‑in module.

• Audio: Line‑out (3.5 mm jack) for audible alarms.

• Service Port: Mini‑USB for debugging and firmware updates.

Protocol and Software Support

The LCA Terminal 640.1 supports a wide range of communication protocols including Modbus RTU, Modbus TCP, LAUER LCA protocol, and ASCII transparent. It is fully compatible with the LAUER LCA‑Config software (version 6.0 or higher), which provides a graphical screen editor, tag database, communication driver selection, and multi‑language text support (up to 10 languages). The software also includes a simulation mode and online monitoring for debugging. The terminal can also be used with third‑party HMI software via OPC UA (client/server) if the optional Ethernet port is used.

Electrical Specifications

• Supply Voltage: 24 V DC ±15 % (19‑33 V DC)

• Power Consumption: 600 mA typical (approx. 14.4 W) – maximum 800 mA

• Isolation: 500 V between power and communication ports

• Protection: Reverse polarity, overvoltage, and transient suppression (IEC 61000‑4‑5)

Mechanical and Environmental Data

• Housing: Die‑cast aluminium with powder coating, front IP65, rear IP20

• Mounting: Panel‑mount with clamping brackets (cut‑out 285 mm x 185 mm)

• Dimensions: 315 mm x 215 mm x 65 mm (W x H x D)

• Weight: 3.0 kg

• Operating Temperature: 0 °C to +50 °C

• Storage Temperature: –20 °C to +70 °C

• Relative Humidity: 10 – 90 % (non‑condensing)

• Vibration Resistance: 1 g (5‑500 Hz) per IEC 60068‑2‑6

Installation and Commissioning

Prepare the panel cut‑out according to the supplied template. Insert the terminal from the front and secure with the clamping brackets – tighten evenly to ensure a watertight seal. Connect the 24 V DC power supply (terminal block with screw clamps) using 1.0‑1.5 mm² wires, observing polarity. Connect Ethernet and serial cables as required. For first power‑up, the terminal will display a start‑up screen and then enter the application (if pre‑loaded) or a configuration menu. Use the LAUER LCA‑Config software to create and download the project via Ethernet or serial cable. The software automatically detects the terminal and establishes communication. After download, restart the terminal to activate the new screens. Calibrate the touchscreen (if fitted) using the built‑in calibration utility. Test all function keys and communication with the PLC to ensure proper operation.

Maintenance and Troubleshooting

Regular cleaning of the front screen and keypad with a soft, anti‑static cloth is recommended – avoid abrasive cleaners. The internal cooling fan (temperature‑controlled) should be inspected for dust accumulation every 6 months; clean with compressed air if necessary. The internal battery (CR2032) for the real‑time clock and SRAM retention should be replaced every 5 years – accessible through the rear cover (service operation). Common faults and solutions:

• Screen remains blank: Check power supply voltage and contrast settings (software).

• No communication: Verify Ethernet/Serial cable, IP address, and baud rate.

• Application not loading: Reload the project using the configuration software.

• System freeze: Press the reset button (recessed on rear) or power cycle.

For persistent hardware issues, return the unit to LAUER service.

Compatibility and Ordering

The LCA Terminal 640.1 is compatible with all LAUER LCA controllers and with third‑party PLCs via Modbus. Variants include different display sizes (10.4‑inch and 15‑inch) and optional touchscreen. The standard model is LCA‑640.1‑G (graphic, no touch). When ordering, specify the desired communication options (fieldbus module) and any custom key legends.