GE Multilin 469-P5-HI-A20-E Motor Management Relay Unit

Module Feature

469-P5-HI-A20-E belongs to GE Multilin 469 motor management relay series.

It integrates comprehensive motor protection, metering, monitoring and control functions, supports RTD temperature input for stator and bearing thermal monitoring. It has built-in LCD display and Modbus communication interface. This widely used unit is applied on fan, pump, compressor and crusher motor protection in chemical, power and mining plant.

Working principle

Current and voltage signals are sampled by internal CT and PT.

The microprocessor executes protection algorithms including overload, locked rotor, phase unbalance, ground fault and phase loss. It outputs trip or alarm signal when fault condition is satisfied, and uploads running data and fault records to upper control system.

Onboard components

Signal transformer, main processing board, LCD display panel, relay output contacts, analog input circuit, communication chip, power supply module.

LED indicators

Front LEDs display power status, run signal, alarm warning and trip fault.

Hardware self‑diagnosis

Continuous self-check detects internal hardware anomaly, CT circuit break, RTD open and communication failure, fault messages show on local LCD.

Programming software

GE EnerVista 469 Setup Software, used for protection curve configuration, meter setting and fault record reading.

Electrical & Process Parameters

Model:469-P5-HI-A20-E Brand:GE Multilin (GE Vernova) Device type:Motor management protection relay Function:AC motor thermal, electrical fault protection, parameter monitoring and remote communication

Mechanical & Structure

Mounting:Panel cutout mounting

Protection class:IP20

Housing:Plastic relay housing

Environmental

Operating temperature:-40℃ ~ +70℃

Storage temperature:-40℃ ~ +85℃

Ambient humidity:5~95% non‑condensing

Certification:CE, UL

Status:Original GE motor protection spare

Installation

Install relay on control cabinet panel according to cutout dimension.

Wire CT, PT, RTD, control and communication cables strictly following wiring diagram. Set motor rated parameters and protection thresholds before commissioning.

Interface

CT/PT input terminals, RTD temperature terminals, digital I/O terminals, Modbus communication port.

Diagnostic

Overload trip: Long time overloaded motor, incorrect thermal curve setting.

Locked rotor alarm: Motor jammed or failed start.

No communication: Wrong Modbus address, discontinuous communication wiring.

RTD fault: Open or short temperature sensor cable.

Product Brief

GE Multilin 469-P5-HI-A20-E 469 motor management relay, intelligent protection device for pump and fan motor monitoring and fault protection.