ABB 1MRK002266-BAr02 Protection and Control Accessories Optical Ethernet Module

The ABB 1MRK002266-BAr02, also cataloged as the 1MRK002266-BA Optical Ethernet Module, operates as a dedicated hardware component for high-speed fiber optic data transmission within Grid Automation and Protection and Control IED platforms. The unit converts internal electrical communication buses into dual glass optical channels to transmit network packets with total immunity to electromagnetic interference (EMI).

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks and Firmware Flash Compatibility

The module integrates dual glass fiber optic ports designed for high-density packet throughput across Profinet and EtherNet/IP deterministic networks. By routing deterministic control traffic over optical media, the interface eliminates ground potential shifts and galvanic noise coupling between distant subracks. Integrated firmware flash compatibility guarantees continuous synchronization with the host protection IED processing unit, preventing packet jitter during high-speed sampled value and GOOSE message transmissions.

Frequently Asked Questions

Q: Does inserting or removing the optical Ethernet module require de-energizing the host IED?

A: Power to the protection IED must be isolated before installing or removing the module to prevent electrical stress on internal backplane pin headers.

Q: How do the two glass fiber interfaces handle network line disruptions?

A: When configured within redundant network topologies (such as PRP or HSR protocols), the dual glass fiber ports process simultaneous duplicate frames to maintain zero-switchover-time network recovery.

Field Installation Guidelines

1. Module Insertion: Slide the optical module carefully into the designated communication slot on the rear panel of the protection IED until the front faceplate flushes against the chassis frame.
2. Fastener Securing: Tighten the retaining thumbscrews manually or with a standard screwdriver to establish solid mechanical grounding between the module faceplate and IED enclosure.
3. Fiber Cable Cleanliness: Inspect and clean glass fiber connector end-faces using isopropyl alcohol wipes before insertion into the optical transceivers.
4. Bending Radius Constraints: Observe minimum bending radius limits (typically 30 mm minimum) for optical fiber jumpers inside cabinet trunking to avoid signal attenuation or glass core fracture.