The GE Multilin 469‑P1‑HI‑A20‑E is an enhanced motor management relay of the 469 series with V4.00 firmware. It features a large backlit LCD and an optimized menu operation interface, supports 1A phase CT secondary input, a wide-range AC/DC control power supply, and 8 channels of 4–20mA analog outputs.
Equipped with comprehensive motor protection, high-precision monitoring, a user-friendly human-machine interface, and configuration capability via the enerVista software, it maintains installation dimensional compatibility with earlier versions. It fully satisfies the protection, control, monitoring, and operation & maintenance management requirements for medium and high-voltage motors, serving as a core intelligent protection terminal for the reliable operation of critical industrial motors.
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Model Code Explanation (469‑P1‑HI‑A20‑E)
| Code Segment | Meaning |
|---|---|
| 469 | Base model: Motor management relay |
| P1 | Phase current input: 1A phase CT secondary |
| HI | Control power supply: 88–300 VDC / 70–265 VAC (48–62 Hz) |
| A20 | Analog outputs: 8 channels of 4–20 mA |
| E | Display type: Enhanced large‑format LCD |
Hardware Specifications
Firmware / Boot Code: Firmware V4.00, Boot Code V3.00, Hardware Version HCurrent Input: 1A phase CT secondary inputControl Power Supply: 88–300 VDC; 70–265 VAC, 48–62 HzAnalog Outputs: 8 channels of 4–20 mADisplay: Enhanced backlit LCD, 40-character visible display, new keypad navigationMechanical: Identical mounting dimensions to the base version (-B) for easy replacement and upgradeOperating Temperature: -40°C ~ +60°C; Storage Temperature: -40°C ~ +80°CIngress Protection: Front IP40, Rear IP20
Functions & Enhanced Features
1. Protection Functions (Core)
- Dynamic thermal model protection integrating negative-sequence current, RTD temperature, and cooling time constant
- Enhanced undervoltage protection: supports 1-phase / 3-phase tripping modes to avoid misoperation due to blown PT fuses; 1-phase tripping by default
- Comprehensive protection: overcurrent, short-circuit, earth fault, stall / locked rotor, over / undervoltage, phase reversal, frequency anomaly, etc.
- Event logging: stores the latest 40 events; captures 16 cycles of waveform data during tripping
2. Human-Machine Interface (Exclusive to Enhanced Version)
- Large backlit LCD for improved readability
- New MENU key consolidates settings / measurements / target values; LEFT / RIGHT / UP / DOWN directional navigation
- Long-press HELP key for LED test; ENTER / ESCAPE / numeric keys retained
3. Software & Configuration (enerVista 469 Setup)
- New waveform analysis: movable cursor, zoom, multi-channel differential display, playback
- Fast connection, centralized configuration of multiple relays, multi-information windows on one screen
- Backward compatible with legacy 469PC configuration files, supports firmware V2.4x–V4.0x
- Advanced functions including front panel display switching and bulk parameter management
4. Monitoring & Control
- Full power metering: three-phase current / voltage, power, power factor, frequency, etc.
- RTD temperature measurement, start inhibition, emergency restart, custom protection curves
- Standard communication interfaces supporting protocols such as Modbus for data transmission to DCS / SCADA systems
Application Scenarios
- Critical rotating equipment such as medium‑ and high‑voltage pumps, fans, compressors, and crushers
- MCC cabinets in petrochemical, power, metallurgy, mining, water treatment and manufacturing industries
- Motor protection under complex operating conditions including high inertia, two‑speed operation, and reduced‑voltage starting
FAQ
What is the difference between the 469‑P1‑HI‑A20‑E and the base version (-B)?
The main differences lie in the display and operation: the -E version features an enhanced large LCD with optimized menus and keypad. It is fully compatible with the base version in mounting cutout, wiring and functions, allowing direct replacement of older models.
What voltages does the HI control power supply support?
It supports 88–300 VDC and 70–265 VAC at 48–62 Hz, making it compatible with mainstream industrial power grids worldwide.
What does A20 represent, and which devices can it connect to?
A20 indicates 8 channels of 4–20 mA analog outputs, which can be connected to PLCs, DCS systems, recorders, transmitters and other devices for remote monitoring.
Is firmware V4.00 compatible with older configuration files?
Yes, it is compatible. The enerVista software can directly open legacy 469PC configurations without re‑entry.
Why are 1‑phase / 3‑phase modes added for undervoltage protection?
This prevents undervoltage nuisance tripping caused by blown PT fuses, improving protection security. The factory default is 1‑phase tripping.
How do the front‑panel keys operate?
- MENU: Switch between Settings / Measurements / Information
- LEFT / RIGHT: Navigate submenus
- UP / DOWN: Select subitems
- VALUE UP / DOWN: Modify parameters
- ENTER: Confirm; ESCAPE: Return
Does it support communication and remote monitoring?
Yes. It can connect to systems via serial port / Ethernet to upload operating data, fault records and waveforms, enabling remote configuration and diagnostics.
Is recalibration required when replacing the relay?
No on‑site calibration is needed. The unit can be put into service immediately after importing the configuration file, resulting in low maintenance costs.
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