ABB 1MRK002311-AAR02 Relion Fiber Optic Communication Module

The ABB 1MRK002311-AAR02, also cataloged as the 1MRK002311-AAR02 Communication Module, operates as a dedicated hardware component for long-distance signal transmission within ABB REx670 V1.1 relay systems.

Hardware Specifications

Backplane Bus Communication Velocity and Deterministic Networks

• The ABB 1MRK002311-AAR02 interface card integrates directly with the main chassis backplane, maintaining backplane bus communication velocity for Real-time sub-station protection events.
• Single-mode fiber optic channels execute deterministic network signal pass-through over extended distances without electromagnetic distortion.
• Module firmware flash compatibility ensures synchronized parameter updates and continuous optical transceiver link diagnostic reporting.
• Internal power isolation circuits ensure channel stability during fluctuating 24 VDC auxiliary supply conditions.

Frequently Asked Questions

Q: What is the maximum recommended physical distance for the fiber optic link on the 1MRK002311-AAR02?

A: The module supports single-mode fiber optic transmission distances up to 20 km (12.4 miles) at data rates up to 10 Mbps.

Q: Is the 1MRK002311-AAR02 module compatible with multi-mode fiber optic cables?

A: No, the optical transceivers on the 1MRK002311-AAR02 are calibrated specifically for single-mode fiber optic cabling.

Field Installation Guidelines

Ensure power to the host REx670 V1.1 relay chassis is de-energized before inserting or removing the 1MRK002311-AAR02 card. Use clean LC/ST fiber optic connectors and verify that optical end-faces are clean and free of dust before mating. Observe minimum bending radius requirements for single-mode fiber cables to prevent signal attenuation and optical glass micro-cracks. Connect the 24 VDC external supply to designated terminals using grounded, shielded power cables.