1MRK002311-AAR02 | ABB Interface Module

The 1MRK002311-AAR02 is a high-performance communication and interface module designed for the ABB Relion 670 and 650 series of protection and control IEDs (Intelligent Electronic Devices). This module acts as the physical and logical link between the protection relay’s internal processor and the substation’s external communication networks or time-synchronization sources. It is engineered to meet the stringent “Zero-Packet-Loss” requirements of mission-critical utility environments.

Technical Datasheet

Product Specifications

  • Model Number: 1MRK002311-AAR02

  • Module Type: Communication & Time Synchronization Interface

  • Compatibility: Relion 670 Series (e.g., RED670, REL670, REC670)

  • Protocols Supported: IEC 61850-8-1, IEC 60870-5-103, DNP 3.0, and LonTalk

  • Physical Ports: Typically features Fiber Optic (ST or LC) or Galvanic RJ45 ports

  • Time Sync Support: IRIG-B, SNTP, or IEEE 1588 (PTP)

  • Isolation: 2.5 kV AC (Galvanic ports)

  • Operating Temperature: -25°C to +70°C

  • Dimensions: Standard Relion I/O slot (3U or 6U depending on chassis)

  • Weight: 0.44 kg

  • Country of Origin: Sweden

Application Areas

The 1MRK002311-AAR02 is predominantly utilized in modern digital substations. Its primary role is to facilitate IEC 61850 station bus communication, allowing the protection relay to exchange “GOOSE” messages with other IEDs for high-speed interlocking and tripping. It is also used to interface the relay with the SCADA system for remote monitoring and to provide the millisecond-accurate time-stamping required for “Sequence of Events” (SOE) logging.

Product Instructions

  1. Preparation: Ensure the Relion IED is powered off before servicing. These communication modules interface directly with the high-speed CPU backplane.

  2. Module Slotting: Slide the 1MRK002311-AAR02 into the designated communication slot at the rear of the IED. Ensure the module is seated firmly to avoid “Comm Fail” alarms.

  3. Optical Fiber Handling: If using fiber optic variants, ensure the fiber ends are cleaned with a lint-free cloth and isopropyl alcohol. Do not exceed the minimum bend radius of the fiber cables to prevent signal attenuation.

  4. Configuration: Use the PCM600 (Protection and Control IED Manager) software to configure the IP address, subnet mask, and protocol parameters. The module will not be active until the configuration is “written” to the IED.

  5. Diagnostic Check: Observe the LEDs on the rear of the module. A flashing green “Link/Activity” LED indicates active data transfer. A solid red “Fail” LED indicates a hardware mismatch or a configuration error in the PCM600 project.

Q&A: Frequently Asked Questions

Does the 1MRK002311-AAR02 support HSR/PRP redundancy? This depends on the specific hardware revision. While the AAR02 variant is a robust interface, systems requiring Parallel Redundancy Protocol (PRP) or High-availability Seamless Redundancy (HSR) typically utilize the specialized “Redundant Ethernet” modules. Verify the port labeling on the module faceplate.

Can I use this module to synchronize the relay clock via GPS? Yes, provided the module is configured for IRIG-B or IEEE 1588 (PTP) and is connected to a compatible GPS master clock source. This ensures all event records across the substation are perfectly synchronized.

What is the difference between the AAR01 and AAR02 revisions? The AAR02 is typically a hardware-refreshed version of the AAR01, featuring updated internal components for better thermal management and improved protocol processing speeds. They are generally backward compatible, but firmware updates may be required.

How do I troubleshoot a ‘Loss of Communication’ alarm? Check the physical link first—ensure the fiber or copper cable is intact. If the physical link is solid, verify the “Client/Server” mapping in PCM600 to ensure the relay is not expecting data from an offline IP address.

Recommended Similar Models

  • ABB 1MRK002311-BA (Dual LC Ethernet Module)

  • ABB 1MRK000173-GB (Binary Input/Output Module)

  • ABB 1MRK002247-AR (Analog Input Module)

  • ABB LDCM (Line Data Communication Module for Differential Protection)

  • ABB SLM (Serial LonTalk Module for older Relion platforms)

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