ABB REM620 Motor Protection

Configured for comprehensive protection, control, measurement, and monitoring of medium and large asynchronous and synchronous motors, the ABB REM620 (REM620 Motor Protection Device) provides direct physical/electrical execution.

Hardware Specifications

Industrial Control and Drives Characteristics

The REM620 architecture processes multi-channel analog current waveforms designed to track system variables across backplane bus communication velocity Licences. By executing low-latency numerical phase evaluations, the relay runs real-time stator differential protection and motor thermal replica tracking algorithms without introducing data conversion loop lag.

The onboard communication processors distribute critical safety and logic telemetry over Profinet / EtherNet/IP deterministic networks, native IEC 61850-9-2 process buses, and horizontal GOOSE messaging blocks to maintain continuous connection tracking across the motor control center (MCC). The hardware layout handles independent I/O density scaling routines by mapping auxiliary inputs from external temperature sensors alongside optional optical arc protection cards. This parallel processing baseline ensures that high-speed breaker trip commands match active motor startup profiles while maintaining absolute software configuration firmware flash compatibility across the ABB Relion 620 ecosystem, preventing network propagation latencies from delaying fault isolation.

Frequently Asked Questions

Q: How does the REM620 interface handle high-density RTD temperature tracking across large motor bearings and windings?

A: The relay incorporates dedicated RTD and mA analog measurement interfaces. These internal ports linearize inputs from platinum or copper resistance elements embedded in the motor frame, mapping the thermal data to the internal protection logic to execute alarm or trip sequences when thermal limits are exceeded.

Q: What mechanisms are used by the Ethernet architecture to eliminate packet loss during a physical line failure?

A: The device utilizes a dual-port Ethernet interface configured for Parallel Redundancy Protocol (PRP) or High-availability Seamless Redundancy (HSR). These protocols duplicate every transmitted data frame across two separate physical network rings, providing zero-latency recovery and continuous network tracking if a single wire is severed.

Q: Can the device control multiple primary switching elements within a double-busbar configuration?

A: Yes. The REM620 standard configurations support direct interlocking and control for one or two circuit breakers alongside multiple manual and electric disconnect switches and grounding switches. The complete logic interlocking matrix is adjusted via the internal configuration software.