GE Multilin UR-6HH Digital I/O Module

GE Multilin UR 6HH Digital I/O Module

The GE Multilin UR 6HH is a high‑density Digital I/O module designed for Universal Relay (UR) systems. It provides a mix of Form‑A, Form‑C, and Fast Form‑C contact outputs and digital inputs, enabling UR relays to interface with switches, pushbuttons, fans, valves, lights, and other auxiliary equipment. The UR‑6HH is part of the flexible modular architecture of the UR family, allowing users to scale contact I/O capacity based on system requirements.

Hardware Specifications

Functional Description

The UR‑6HH module expands the digital I/O capability of UR relays, supporting:

• Up to 96 contact inputs (depending on relay configuration)
• Up to 64 contact outputs
• Six Form‑A outputs (specific to the UR‑6HH variant)

Digital inputs may be wet (active) or dry (passive) contacts:

• Dry contacts provide galvanic isolation between devices
• Wet contacts do not provide isolation and rely on external voltage sources

The module integrates seamlessly with GE Multilin’s EnerVista UR software suite, enabling configuration, monitoring, and diagnostics through Viewpoint Monitoring and Viewpoint Maintenance tools.

Placement Within a UR Relay

The location of the UR‑6HH module inside a relay depends on:

• The relay model (e.g., B30, C30, T60, L60, etc.)
• The order code of the relay
• The number of digital I/O modules installed

Example: In a B30 relay order code such as:

B30‑H00‑HCL‑F8H‑H6H‑L8H‑N6A‑S8H‑U6H

The segments H6H and U6H indicate digital I/O modules. Their physical placement corresponds to the slot positions defined by the relay’s modular chassis layout.

Frequently Asked Questions

Q: Where is the UR‑6HH located inside a UR relay? A: Placement varies by relay type and order code. Digital I/O modules appear in specific slot positions indicated by two‑character codes (e.g., 6H, 6A) within the relay’s model number.

Q: How many Form‑A outputs does the UR‑6HH provide? A: The UR‑6HH includes six Form‑A outputs.

Q: What types of digital contacts does the module support? A: Form‑A, Form‑C, and Fast Form‑C outputs, plus wet and dry digital inputs.

Field Installation Guidelines

• Ensure the module is fully seated in the UR chassis to maintain reliable contact‑signal timing.
• Separate digital I/O wiring from CT/VT circuits to reduce noise coupling.
• Use shielded wiring for wet contacts and terminate shields at a single point.
• Confirm contact type requirements (Form‑A vs. Form‑C vs. Fast Form‑C) before installation.
• Verify connector engagement before energizing the relay.