Description
Brand: ALSTOM
Model: LC105A-1
System Name: Multifunctional Industrial Control Module, also recognized as a Digital Output Module, Communication Controller Module, and Microprocessor-based Control Board in different application contexts; it can also serve as a Motor Protection Relay for specific industrial scenarios
Product Overview
The ALSTOM LC105A-1 is a high-performance, multi-functional industrial control module launched by ALSTOM, featuring a highly integrated and modular design to provide stable and reliable control, monitoring, and protection solutions for industrial automation systems and railway transportation systems[4]. It integrates powerful data processing, logic control, and communication capabilities, with a robust structure that ensures long-term stable operation in harsh industrial environments. This product is widely used in power, petrochemical, manufacturing, railway transportation, and other fields, serving as a core component for equipment control, data transmission, fault diagnosis, and system integration[4][5].

ALSTOM LC105A-1
Core Functions
- Control Functions: As a digital output module, it provides multiple digital output channels to control external devices such as relays, solenoids, and valves; in railway transportation applications, it controls the speed, braking, and other key functions of electric locomotives by connecting to locomotive sensors and actuators; it can also act as a motor protection relay to protect motors, distribution panels, and critical loads from overloads, short circuits, and phase faults.
- Communication Functions: Equipped with versatile communication interfaces including Ethernet, RS-232, RS-485, and CAN, supporting multiple communication protocols such as Modbus TCP/IP, Profibus, and CANopen[5][6]. It enables seamless data exchange and interoperability with PLCs, DCSs, SCADA systems, and other industrial equipment, with a data transmission rate of up to 10/100 Mbps for real-time control and monitoring needs[6].
- Protection & Fault Diagnosis Functions: Built-in comprehensive fault detection and diagnosis capabilities, allowing quick identification and troubleshooting of system problems; when used as a motor protection relay, it provides overload, short circuit, and phase fault protection to ensure the safe operation of electrical circuits and equipment.
- Data Processing Functions: Equipped with a high-performance 32-bit RISC CPU, it has powerful data processing and computing capabilities, with a data processing speed of over 100,000 times per second[5]. It can perform real-time filtering, analysis, and conversion of collected data, providing timely and accurate data support for system control.
- Expansion & Compatibility Functions: Features expandable memory (512 KB expandable) to meet the needs of complex control tasks and data storage; the modular design allows easy maintenance and function upgrades, and it is compatible with various automation protocols and standards, enabling flexible integration into different industrial control systems[6].

Technical Parameters
| Parameter Category | Specifications |
| Power Supply | 24 VDC (standard); Optional: 18-36 VDC wide voltage input (depending on configuration)[3][5] |
| CPU Type | 32-bit RISC |
| Memory | 512 KB (expandable) |
| I/O Capacity | Digital Inputs: 16; Multiple digital output channels (depending on configuration)[6] |
| Communication Interfaces | Ethernet, RS-232, RS-485, CAN; Supports Modbus TCP/IP, Profibus, CANopen protocols[5][6] |
| Data Transfer Rate | Up to 10/100 Mbps (communication module version) |
| Operating Temperature | Standard: -40 °C to +85 °C; Optional: -40 °C to +80 °C (depending on configuration)[3] |
| Humidity Level | 0% – 95% RH (non-condensing) |
| Protection Rating | IP20 (inside the cabinet) (standard) |
| Vibration Resistance | 5 g RMS at 20 Hz to 500 Hz |
| Shock Resistance | 10 g for 11 ms |
| Rated Voltage (for Motor Protection) | 400 – 690 V AC (typical for IEC markets) |
Specifications
- Dimensions: Standard: 90 mm × 50 mm × 70 mm; Optional: Compact modular design, specific dimensions depending on configuration
- Weight: Lightweight design, specific weight depending on configuration (typically ≤ 1.0 kg)
- Structure: Modular design, each module responsible for a specific function, easy to install, service, and maintain
- Warranty Period: 12 months (1 year)
- Product Status: Original new, in stock, available for same-day shipping
- Component Quality: Adopts high-quality electronic components, resistant to mechanical stresses, wear, and voltage fluctuations, suitable for harsh industrial and railway transportation environments[3][6]

ALSTOM LC105A-1
Application Fields
The ALSTOM LC105A-1 is widely applied in various industrial and transportation scenarios, including but not limited to:
- Railway Transportation: Used in electric locomotive control systems to control speed, braking, and other functions; also applied in signal systems and fleet management for coordinated control of train operations[4].
- Power Industry: Used in power generation systems, switchgear, and motor control centers (MCCs) for circuit protection, data acquisition, and automated control[4].
- Petrochemical & Chemical Industry: Applied in process control, manufacturing automation, and plant operations to control external devices and ensure stable production processes.
- General Industrial Automation: Suitable for pump, fan, compressor, and conveyor system protection; used in manufacturing automation, water and wastewater treatment, pulp and paper, and food and beverage industries.
- Renewable Energy Systems: Applied in inverters, solar/wind farm collection networks for data transmission and control; also used in commercial buildings for HVAC systems, lighting panels, and data center control.
