ABB N93-3004-05 1MRK002122-ABr13 is a core local communication processor module designed for the ABB REF54_ series feeder and transformer protection and measurement devices.It undertakes the management of external data interfaces, internal CPU data exchange, multi-protocol conversion, and communication link control for the protection device.Featuring a compact modular architecture, highly reliable industrial-grade design, and multi-protocol compatibility, it enables stable data interconnection between protection equipment and upper-level SCADA, PLC, and industrial control systems.It is a key component for data acquisition, remote monitoring, and system integration in power automation and industrial distribution protection systems.
Functional Positioning
As a dedicated communication co-processing unit for the REF54_ series protection devices, it is responsible for bidirectional data transmission and protocol conversion between the device’s internal data and external systems.
It uploads full datasets of the protection device, including operating status, measurement data, fault information, and event logs, while receiving control commands and parameter configuration instructions from upper-level systems.
It provides multi-protocol compatibility to adapt to industrial control and power monitoring systems from different manufacturers and architectures, solving communication compatibility issues in heterogeneous systems.
It features communication link management, data verification, fault diagnosis, and status reporting functions to ensure the integrity, real-time performance, and reliability of data transmission.
Technical Parameters
1. Basic Specifications
- Model: N93-3004-05
- Order No.: 1MRK002122-ABr13
- Product Type: Local Communication Module
- Compatible Hosts: ABB REF54_ series feeder protection and transformer protection devices
- Installation: Mounted on the host internal backplane slot, modular plug-and-play design
- Weight: Approx. 0.4 kg (compact and lightweight design)
2. Electrical Parameters
- Power Supply: Powered by the host internal backplane, no external power supply required
- Supply Voltage: 24VDC / 48VDC (auto-adaptive)
- Maximum Power Consumption: ≤20W
- Physical Interface: RS-485 serial interface (industrial standard)
- Internal Bus: Compatible with SPA bus and IEC 60870-5-103 telecontrol protocol bus
3. Supported Communication Protocols
- Power Industry Standard Protocols: IEC 61850 (substation communication network), IEC 60870-5-103 (relay protection telecontrol)
- General Industrial Protocols: DNP3.0, Modbus RTU
- Protocol Conversion: Built-in protocol conversion engine for automatic encapsulation and parsing between internal data and external protocols
4. Environmental Adaptability
- Operating Temperature: -20℃ ～ +70℃
- Storage Temperature: -40℃ ～ +85℃
- EMC: Compliant with IEC 6000 series standards, strong electromagnetic interference immunity
- Vibration / Shock: Meets industrial IEC 60068-2-6 / IEC 60068-2-27 standards
5. Functional Channels
- Input Channels: 8 configurable signal inputs, supporting high-precision industrial sensor signal acquisition
- Output Channels: 8 configurable signal outputs, used for data distribution and control command transmission
Product Features
- Dedicated CompatibilityDeeply matched with the REF54_ series protection devices, fully compatible in hardware interface, software protocol and data format, enabling plug-and-play without additional adaptation.
- Multi-Protocol CompatibilityCovers mainstream communication protocols in power and industrial fields, supports seamless connection with various SCADA, DCS and PLC systems, suitable for both new construction and renovation projects.
- High-Reliability DesignAdopts industrial-grade components, fanless heat dissipation and wide-temperature, wide-voltage design to ensure long-term stable operation in harsh environments such as power plants, substations and industrial workshops.
- Modular & Easy MaintenanceBackplane slot-mounted design, supports hot-swappable (selected models), allowing quick replacement in case of failure without affecting the core protection functions of the host.
- Data Security AssuranceBuilt-in data verification, link monitoring and fault reconnection mechanisms to ensure no data loss or disorder during transmission, with automatic alarm for communication interruption.
- Low-Power & CompactCompact size and low power consumption, no extra space occupied inside the host and no additional heat load added to the system.
Application Scenarios
- Power SubstationsData communication between feeder protection, transformer protection devices and substation control systems, telecontrol master stations.
- Industrial Power Distribution SystemsInterconnection between high-voltage/low-voltage power distribution protection devices in plants and the central control room SCADA system.
- Energy InfrastructureRemote monitoring and data acquisition for auxiliary machine protection in power plants and protection devices in new energy stations.
- System Renovation & UpgradingCommunication function upgrade for legacy REF54_ devices to adapt to new monitoring systems.
Frequently Asked Questions (FAQ)
Q1: Does this module support hot-swapping?A1: The module supports plugging and unplugging only when powered off; hot-swapping while the host is energized is not supported.Before replacement, power off the host first, remove the faulty module, insert the new one, and power on again. The module will be automatically recognized and communication restored.
Q2: What is the difference between N93-3004-05 and other versions (such as ABr02)?A2: Different suffixes in the same series (e.g., ABr02 / ABr13) represent hardware version iterations. Core functions, protocols, and interfaces are fully consistent.As a newer version, ABr13 features improved anti-interference performance, compatibility, and stability, and can directly replace older versions.
Q3: Does it support connection with non-ABB PLC/SCADA systems?A3: Fully supported.The module supports common standard protocols including Modbus, DNP3.0, and IEC 60870-5-103, enabling seamless connection with PLCs from Siemens, Schneider, Rockwell, and other mainstream SCADA systems.
Q4: How to diagnose and troubleshoot module faults?A4:
- Check the communication indicator on the host panel: steady on or regular blinking indicates normal status; off or solid red indicates a fault.
- Review host event logs for alarms such as communication interruption, protocol errors, or module not detected.
- Inspect RS-485 wiring: ensure terminals are tight, polarity is correct, and no short or open circuit exists.
- Replacement method: if the system recovers after installing a module of the same model, the original module is faulty.
Q5: Is additional software configuration required?A5: Basic communication requires no extra software. Communication address, baud rate, and protocol type can be configured via the host panel.Advanced functions (such as IEC 61850 data set customization) require parameter downloading through ABB’s dedicated configuration tools (e.g., PCM600).
Q6: What is the maximum communication distance?A6: Via the RS-485 interface, the communication distance can reach up to 1200 meters using standard shielded twisted-pair cable.With repeaters, it can be extended to over 3000 meters, meeting layout requirements for most industrial sites and substations.
Q7: Does the module support redundant configuration?A7: The module itself does not support single-slot redundancy.However, communication channel redundancy can be achieved through dual-module configuration on the host or redundancy of the upper system communication link, improving system availability.
Q8: Is it compatible with legacy REF54_ devices?A8: Yes, it is compatible with all REF54_ series devices (including early models).It fully matches hardware interfaces and communication protocols, and can directly replace the original communication module to upgrade communication for older equipment.
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