GE Multilin UR-6AV Universal Relay Series Digital I/O Module

Description

The UR-6AV (UR6AV) is an expansion Digital I/O Module engineered for General Electric's Universal Relay (UR) series protection platforms. This hardware card functions as a localized signal concentrator, providing the necessary contact inputs and outputs to bridge communication between the relay host and peripheral substation equipment. The module architecture is characterized by the "6A" order designation, which traditionally provides a specific combination of discrete input and output channels tailored for high-speed interlocking, signaling, and remote telemetry control loops.

The "V" configuration within the UR-6AV (UR6AV) model structure designates its mechanical optimization for vertically mounted UR chassis systems. These units are specifically designed for space-restricted industrial switchgear and small-footprint control cabinets. Operating via the internal system backplane, the module enables field signals to be mapped directly into the host relay's internal logic engine using the EnerVista configuration software utility. This setup eliminates comprehensive, traditional point-to-point secondary hardwiring while preserving electrical isolation against ambient transients.

Features

• Vertical Form Factor Design: Built with a specialized mechanical layout tailored exclusively for space-saving vertical mount Universal Relay enclosures.
• Discrete I/O Concentration: Integrates a dedicated combination of contact inputs and outputs onto a single plug-in board to scale relay telemetry.
• FlexLogic Subsystem Integration: Fully maps physical input statuses and output command states into the internal relay logic sequence for custom automation.
• Hardwired Layout Reduction: Decreases physical panel auxiliary wiring complexity by converting field signals directly into internal backplane digital data.
• Substation Hardened Architecture: Constructed with industrial-grade physical components designed to suppress electromagnetic interference (EMI) and power surges.

Applications

• Distributed status monitoring and interlocking logic in vertical-mount protection systems
• High-speed auxiliary signaling loops for distribution switchgear control panels
• Automated industrial substation telemetry expansion
• Input/output slot scaling for GE Multilin UR Series platforms (e.g., F60, B30, L90, T60)

Technical Specifications

Installation Guidelines

Enclosure Layout and Mechanical Alignment

• Verify the physical orientation of the target enclosure card cage before installing the module. The UR-6AV (UR6AV) features structural keying and physical specifications intended solely for vertical slot configurations.
• Do not attempt insertion into standard horizontal rack frameworks, as this can result in mechanical binding or severe backplane pin misalignment.

Pre-Installation Power Isolation

• Completely switch off and isolate the primary auxiliary AC/DC control voltage lines entering the primary relay power supply module.
• Disconnect or trip external breaker control loops wired to the card's target terminal blocks to prevent accidental breaker actuation or severe shock risks during maintenance.
• Securely wear an earth-grounded electrostatic discharge (ESD) wrist strap throughout the card replacement process to safeguard internal CMOS microprocessors from static damage.

Card Insertion Mechanics

1. Slide the side edges of the circuit card squarely into the molded plastic track guides of the vacant target slot.
2. Push the module smoothly into the backplane channel until the outer aluminum faceplate sits perfectly flush with the adjacent modular assemblies.
3. Apply firm, centered manual pressure to guarantee the multi-pin rear terminal blocks mate completely with the internal backplane receptor.
4. Securely tighten both the upper and lower faceplate retention screws to lock mechanical stability and finalize the primary chassis earth ground pathway.

FAQ

What specific configuration utility is utilized to set up the I/O channels?

The module paths are configured via General Electric's standard EnerVista UR Setup Software. This utility allows commissioning engineers to map discrete field input points to internal logic state operands and bind protection variables to the physical output contacts.

Can this vertical I/O card be mixed with older generation modules inside the relay?

Yes, but when upgrading components within the Universal Relay framework, you must check the main hardware ordering rules. While I/O modules are generally cross-compatible across firmware eras, matching structural variants (such as keeping all expansion modules within the vertical format inside a vertical chassis) is required to ensure mechanical compliance.

What are the consequences of seating the card while the backplane is actively energized?

Hot-swapping is not supported for this hardware block. Seating or extracting the card module while the internal backplane distribution rails are live can generate electrical terminal arcing, trigger permanent data register corruption, or place the host protective CPU into a critical system halt state.