ABB 1MRB150020R1102 – OEM Interface/Feedback Board for ABB Drive Systems

The ABB 1MRB150020R1102 is an original ABB spare module designed for integration inside ABB drive and motion control cabinets. From my experience, it’s typically used as an internal interface or feedback board—bridging the drive’s control unit with speed/position feedback hardware or related conditioning circuits.    It’s a straight fit for maintenance teams who need a like-for-like replacement to restore reliability without re-engineering the whole drive.

Key Features

• OEM form/fit/function — drops into the intended ABB drive slot, so you avoid mechanical mismatches or awkward cabling workarounds.

• Feedback interface role — in many cases, this board handles encoder/resolver or similar feedback pathways used for speed/position control.

• Host-powered design — the module is powered through the drive/controller backplane, simplifying wiring inside the cabinet.

• Stable signal conditioning — seems to be tuned for the noise environment of industrial cabinets, helping maintain clean signals under load.

• Service-friendly — typically supports ESD-safe swap-out with standard hand tools; minimal downtime when you have the correct revision.

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Wherever ABB drives run critical machinery, this module earns its keep. You might notice it in plants using precise speed/torque regulation—metals processing lines, paper and film, material handling, cranes, marine winches, test stands, and large HVAC or water/wastewater drives. Many maintenance teams keep one on the shelf because it shortens unplanned downtime when a feedback path goes noisy or fails.

• Reliability — factory-original part with the correct layout, component ratings, and coatings for ABB cabinets.

• Compatibility — matches the intended slot and harnessing; no guesswork with pinouts or shielding.

• Cost control — reduces engineering time versus adapting third-party boards; quicker line recovery in most cases.

• Traceability — genuine part number and revision help with fleet standardization and maintenance records.

A maintenance lead from a food plant told me they swapped this board during a planned stop and were back in production in under 30 minutes, with no parameter changes needed. That’s fairly typical when replacing like-for-like within the same drive family.

• Cabinet environment — keep within the host drive’s ventilation and temperature spec; avoid dust ingress and moisture. Good airflow usually matters more than people expect.

• ESD handling — use a grounded wrist strap and antistatic mat; isolate the drive and wait for DC link discharge before opening.

• Wiring & shielding — route feedback cables away from high-power lines; maintain shield terminations as per ABB wiring diagrams to minimize noise.

• Firmware/parameters — back up the drive parameters beforehand; while a board swap is typically transparent, it’s good practice to verify encoder/resolver settings.

• Routine checks — periodically inspect connectors for oxidation or looseness; clean with approved electronics cleaners; verify tightness torques as specified.

• Spare strategy — for 24/7 lines, keeping a tested spare on hand usually pays for itself after a single avoided outage.

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• Manufactured by ABB to OEM specifications for use within CE-marked drive systems

• RoHS-compliant components in most cases; UL/CSA recognition depends on the complete drive assembly

• Produced under ISO 9001 quality systems

• Standard ABB warranty when supplied through authorized channels (duration varies by region and contract)

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Teams usually pair this board with the correct ABB feedback cables, shielding kits, and mounting hardware specific to their drive family. If you share the host drive model and current revision, I can point you to the exact harness and connector set to keep installation tidy and compliant.