The ABB 1MRK002122-ABR03 (also known as LR LDCM) is an optical long‑range line data communication module designed for industrial automation and power system applications, providing reliable signal conversion, isolation, and remote I/O control with robust optical connectivity and multi‑protocol support.
ABB 1MRK002122-ABR03 Product Overview & Technical Specifications Product Brief The ABB 1MRK002122-ABR03 (also known as LR LDCM) is an optical long‑range line data communication module designed for industrial automation and power system applications, providing reliable signal conversion, isolation, and remote I/O control with robust optical connectivity and multi‑protocol support. Brand ABB Model 1MRK002122-ABR03 Dimension The module has physical dimensions of 74 mm × 370 mm × 361 mm and a weight of approximately 1.52 kg, suitable for DIN‑rail mounting in industrial cabinets. Key Features Optical Communication: Single‑mode fiber interface at 1550 nm for long‑distance, noise‑immune data transmission, ensuring stable operation in harsh industrial environments. Signal Conversion & Isolation: Performs galvanic isolation and conversion between controller digital signals and field analog/digital I/O, supporting remote I/O control and data acquisition. Multi‑Protocol Compatibility: Supports Modbus RTU, PROFIBUS DP, CANopen, and other industrial protocols for seamless integration with diverse control systems. Robust Environmental Rating: IP65 protection against dust and water ingress, operating temperature range of −20°C to +60°C, and low power consumption (<2 W) for energy efficiency. Modular & Flexible Design: DIN‑rail mountable with a compact form factor, enabling easy installation, expansion, and maintenance in distributed control architectures. High‑Speed Output: Supports output frequencies up to 50 kHz for fast response in real‑time control loops. Input & Output Input Specifications Power Input: 24 V DC nominal supply voltage, with low power draw (<2 W) for efficient operation. Optical Input: Single‑mode fiber input at 1550 nm for long‑haul data reception from remote field devices or controllers. Field I/O Inputs: Accepts analog and digital signals from sensors, transmitters, and field instruments, with galvanic isolation to protect against ground loops and electrical interference. Communication Inputs: Receives control and data commands via supported industrial protocols (Modbus RTU, PROFIBUS DP, CANopen) over twisted‑pair or fiber media. Output Specifications Optical Output: Transmits processed data over single‑mode fiber (1550 nm) to remote I/O stations or control centers, ensuring high signal integrity over extended distances. Field I/O Outputs: Delivers isolated analog and digital control signals to actuators, valves, and other field devices, supporting up to 50 kHz output frequency for dynamic process control. Communication Outputs: Forwards status, diagnostic, and process data to supervisory systems using standard industrial protocols, enabling real‑time monitoring and control. Status Indicators: Provides LED outputs for power, link activity, and fault conditions to support quick diagnostics and system troubleshooting.
interface *Output method: rear output *Fast Ethernet: 3 slots, each slot supports 8 ports, with optional optical and electrical options *Gigabit Ethernet: Provides 4 1000Base SFP slots *CONSOLE port: RS232 (RJ45) *Alarm port: 5.08mm spacing 3-pin Phoenix wiring terminal, 250VAC/220VDC 2 A cable *Twisted pair cable: 100m *Multimode fiber: 1310nm, 2km (100Mbps); 1310nm, 500m (gigabit) *Single mode fiber: 1310nm, 0-40km; 1550nm, 0-80km source *Input voltage: 110-220VDC/VAC, redundant input *Connection terminal: 5.08mm spacing 5-pin Phoenix wiring terminal *Power:<40W mechanical properties *Case: Aluminum model with fanless design *Protection level: IP30 *Installation method: 19 inch 1U rack type *Shell size: 440 mm * 44.5 mm * 370 mm (W * H * D), as shown in the attached image *Impact, vibration, and drop: meet the requirements of IEC61850-3 5.5 CM level *Weight: approximately 4.3kg
