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Introduction
The ABB 1MRK002122-ABr08 Binary I/O Module is an industrial-grade digital interface module designed for reliable signal acquisition and output control in ABB protection, control, and substation automation systems. It is typically used in Relion®-based IED architectures, where fast, deterministic binary signal handling is required for protection logic, switching operations, and system interlocking.
In modern power and industrial automation environments, this module acts as a critical bridge between field-level devices and control intelligence, ensuring stable and accurate real-time signal processing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model Number | 1MRK002122-ABr08 |
| Product Type | Binary I/O Module |
| System Compatibility | ABB Relion / Substation Automation / IED systems |
| Function | Digital input acquisition + relay output control |
| Input Channels | Typically 16 digital inputs |
| Output Channels | Typically 8 digital outputs |
| Input Voltage | 24 V DC nominal |
| Output Type | Relay or transistor output (system variant dependent) |
| Output Rating | Up to 250 V AC/DC switching capability (relay dependent) |
| Switching Current | Up to 5 A per channel (typical relay class) |
| Signal Type | Dry contact / wet contact compatible |
| Isolation | Galvanic isolation between channels and internal bus |
| Response Time | Millisecond-level switching for protection logic |
| Communication Interface | IED backplane / station bus integration |
| Operating Temperature | -25°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity Range | 5–95% non-condensing |
| Protection Class | IP20 (panel / rack-mounted environment) |
| Mounting Type | Plug-in module for ABB protection chassis |
| Dimensions (H×W×D) | ~100 mm × 35 mm × 60 mm |
| Weight | ~0.1–0.3 kg |
