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GE 469-P5-HI-A20-E Motor Management Relay
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- Part Number: 469-P5-HI-A20-E
- Brand: GE Fanuc
- Type: Motor Management Relay
- Dimensions: 2.1x18.6x26.3cm
- Country of Origin: USA
- Barcode: 8537101190
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Product Description
The GE Multilin 469-P5-HI-A20-E, also cataloged as the 469 Motor Management Relay, operates as a dedicated hardware component for monitoring, controlling, and safeguarding three-phase induction motors within industrial power automation systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 469-P5-HI-A20-E |
| Brand | GE Multilin (GE Vernova / GE Grid Solutions) |
| Origin | Canada |
| Weight | 13 lbs (Shipping profile) |
| Dimensions | 20 x 20 x 20 inches (Shipping container configuration) |
| Operating Temp | Standard industrial switchgear ambient parameters |
| Power Consumption | Sourced via internal high-range control power block |
| Control Power Input | 90 to 300 V DC or 70 to 265 V AC at 48 to 62 Hz |
| Humidity Range | Up to 90% non-condensing |
| Phase Current Inputs | 5 A Phase CT Secondaries |
| RTD Input Layout | 3-wire: 100 ohm Platinum, 100 ohm Nickel, 120 ohm Nickel, 10 ohm Copper |
| Analog Outputs | Four 4 to 20 mA active current loops |
| Communication Interfaces | RS232 front port, RS485 rear serial network architecture |
| Local Interface | Enhanced version featuring a 40-character local LCD display |
| Data Recording Range | Configurable logging intervals from 1 second to 1 hour |
| Protection Profiles | Torque, overtemperature, stator differential, undervoltage, overvoltage |
Backplane Bus Communication Velocity and Firmware Architecture
The internal architecture leverages high-density microprocessing arrays to maximize communication velocity across the internal backplane bus layers. Strict firmware flash compatibility matching across the active hardware registers allows the processing core to resolve multi-channel monitoring indicators simultaneously. Data metrics derived from the 5 A current transformer secondaries and the 3-wire RTD sensor array pass through dedicated analog-to-digital hardware paths, feeding the integrated FlexLogic engine. Calculated variables for torque verification, negative-sequence overcurrent anomalies, and stator differential values are resolved in real time and distributed directly to the communication logic or the 40-character local LCD display matrix without bus latency bottlenecks.
Frequently Asked Questions
Q: How does the local screen software rank and step through active diagnostic faults or alarms?
A: Active codes, trip parameters, and system alarms are displayed on the enhanced LCD in strict order of technical importance. Operators press the NEXT key to scroll through stacked diagnostic alerts sequentially; if no alarms exist, the system triggers the dedicated message LED to remain lit on a solid indicator loop.
Q: Can the 469-P5-HI-A20-E chassis be removed for testing without causing an open-circuit fault on the active phase current lines?
A: When housed inside the standard factory drawout case configuration, the physical assembly uses automatic shorting bars on the backend terminal plate. Extracting the active relay module closes these mechanical shorting blocks, clamping the 5 A phase current transformer lines before they can enter an open-circuit state.
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