LÜTZE TRANSPORTATION has launched a multi-range analog converter housed in its new LCIS Rail platform. This 6.2 mm wide interface technology provides a compact solution for standard analog signal conversion between controllers, sensors, and actuators in railway architectures.

Spatial Constraints in Rail Vehicle Control Cabinets
Modern rail vehicles require extensive interface technology to manage complex automation and signaling tasks. However, installation space within onboard control cabinets is heavily restricted. Component density must be maximized without compromising the thermal management or accessibility required for maintenance and service. To address these spatial limitations, the LCIS Rail housing has been optimized to a width of 6.2 mm and an installation depth of 68 mm, creating additional space on the DIN rail for critical control hardware.

Signal Conversion and Configuration Mechanisms
The multi-range analog converter facilitates the translation of standard analog signals across the sensor, actuator, and controller levels. Operating on a 24 V DC power supply, the device supports multiple input and output ranges, including 0 to 10 V, 0 to 20 mA, and 4 to 20 mA. These ranges are mechanically configurable via integrated DIP switches, enabling a single hardware module to address various signal processing tasks. This configurability reduces the necessity to stock multiple specific modules, lowering inventory requirements and simplifying installation procedures. Wiring is executed via push-in connection technology, allowing for fast, tool-free terminal insertion, while a 2 mm test opening provides direct access for functional testing and measuring during commissioning. Insulated jumper combs are available as accessories to allow for efficient potential distribution.

Galvanic Isolation and Rail Compliance Standards
Maintaining the integrity of sensitive signal paths in high-interference environments requires robust electrical separation. The converter features three-way galvanic isolation rated at 1.5 kVrms, which reliably isolates the input, output, and power supply from one another to ensure the availability of standard analog signals. To meet the specific environmental and electrical requirements of robust rail components, the module is engineered for an operating temperature range of -40 °C to +70 °C. The circuitry incorporates surge protection, a PTC fuse at the current input, a short-circuit-proof output, and maintains an accuracy of 0.1% FSR. The hardware complies with stringent railway sector standards and specifications, including EN 50155, EN 50121-3-2, EN 50124-1, EN 61373, EN 45545-2, and the EBA EMC 06 regulation. The product family in the LCIS Rail housing will be gradually expanded to include additional functions, such as relay and solid-state relay modules.

Additional Context
This section details technical specifications and competitive benchmarking not included in the original product announcement

Within the market for DIN-rail mounted analog signal conditioners, a 6.2 mm width has become an industry standard for ultra-compact applications, heavily populated by general industrial series such as the Phoenix Contact MINI Analog Pro and WAGO 857. However, the LÜTZE TRANSPORTATION LCIS Rail series distinguishes itself by targeting the railway sector directly, embedding specific EN 50155 and EN 45545-2 (fire protection) compliance directly into this micro-housing format. While standard industrial converters often require derating or specific enclosures to manage railway thermal and vibration profiles, the LCIS Rail operates natively at the extended -40 °C to +70 °C range with 1.5 kVrms isolation, bypassing the need for secondary ruggedization in rolling stock applications.

Edited by Maria Brueva, Induportals editor – adapted by AI.

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