Product Overview

The ABB REM630 (order‑code TBMNBBACAABZEZNBXC) is a high‑performance motor management intelligent electronic device (IED) within ABB Relion® 630 product family, built for medium‑voltage large asynchronous and synchronous motor protection, control, measurement and condition monitoringABB Group. This full‑feature protection relay integrates differential motor protection, thermal overload modeling, startup supervision, fault recording, local‑remote bay control and multi‑protocol communication into one withdrawable cabinet‑mount unit. Original OEM production has been discontinued, so this exact ordering variant is widely sourced as mission‑critical spare hardware for existing industrial medium‑voltage motor feeders to avoid costly unplanned downtimeABB Group.

Core Technical Specifications

• Model: REM630
• Full Order Code: TBMNBBACAABZEZNBXC
• Product Family: ABB Relion® 630 series
• Device Type: Motor Protection & Control IED
• Primary Protected Assets: Medium‑large asynchronous / synchronous MV motors (pumps, fans, compressors, mills, crushers)abb-drive …
• Core Protection Functions: Motor differential (87M), thermal overload (49M), locked‑rotor / startup‑time supervision, phase‑unbalance, jam‑protection, loss‑of‑load, phase‑reversal, directional/non‑directional earth‑fault, backup overcurrent, frequency under/over protection; synchronous‑motor dedicated underexcitation and rotor earth‑fault protection available based on configurationeero
• Optional Expansion: RTD/mA module supporting 8 RTD temperature inputs plus 4 mA analog outputs for winding & bearing temperature surveillanceabb-drive …
• Communication Interfaces: IEC 61850 (incl. GOOSE messaging), DNP3 TCP/IP, IEC 60870‑5‑103 protocols for substation automation integrationABB Group
• Human‑Machine Interface: Integrated front‑panel HMI with configurable push‑buttons, status LEDs, local setting and fault‑event browsing
• Mounting: 19‑inch withdrawable flush cabinet‑panel mounting
• Operating Temperature: −20 °C to +60 °C
• Humidity: 5 %‑95 % RH, non‑condensing
• Protection Class: Compliant with relevant IEC standards for substation IED hardware
• Compatibility: Relion 630 series system tools; not backward‑compatible with legacy REF/REM 500‑series hardware

 

Typical Industrial Applications

‑ Petrochemical complexes: Medium‑voltage large‑motor feeder protection for compressors, process pumps and blowers ‑ Power generation plants: Auxiliary motor protection for boiler feed pumps, forced‑draft and induced‑draft fans ‑ Mining & mineral processing: Crusher and mill motor protection for heavy‑duty cyclic‑load equipment ‑ Water‑treatment facilities: Large‑capacity pump‑motor bay control and fault‑protection ‑ Heavy‑industry manufacturing: Spare‑part replacement for existing REM630 installed‑base legacy protection panels

 

Installation & Maintenance Notes

1. Isolate all AC/DC auxiliary supply and CT/VT secondary circuits before removing or inserting the withdrawable REM630 unit. Hot‑swap of live CT circuits is strictly prohibited.
2. Verify the ordering string TBMNBBACAABZEZNBXC matches site hardware requirements; firmware and function‑set configuration must be re‑loaded after hardware replacement to match existing motor‑protection settings.
3. Strictly observe CT‑secondary wiring best practices; avoid open‑circuit current‑transformer secondary terminals, which create dangerous high‑voltage hazards.
4. Confirm communication port assignments, GOOSE‑message datasets and substation‑automation host point‑mapping after commissioning replacement hardware.
5. During scheduled outages: inspect front‑panel status logs, download fault‑event records, clean cabinet ventilation paths, and validate RTD‑input channel integrity if temperature‑monitoring expansion is fitted. Store spare units in dry, temperature‑controlled anti‑static storage.

 

Common Troubleshooting Tips

‑ Motor differential protection false tripping: Check CT‑wiring polarity, CT‑ratio matching, and wiring‑loop grounding points before adjusting relay‑setting parameters. ‑ Startup‑supervision or locked‑rotor alarms: Cross‑validate relay startup‑time parameters against actual motor‑accelerate‑time field data; inspect motor‑mechanical binding issues. ‑ Loss of communication to plant SCADA: Verify network cable integrity, IP‑address configuration, and protocol‑profile matching; confirm GOOSE‑subscription datasets. ‑ Temperature‑monitoring channel failures: Inspect RTD field wiring and terminal connections before diagnosing internal IED hardware faults. ‑ Persistent auxiliary‑supply alarms: Check DC‑auxiliary voltage level and terminal‑block tightness.