GE Multilin UR7JH Digital I/O Module

Product Overview

The GE UR-7JH is a Digital I/O Module from GE Multilin, designed for the UR Series Universal Relay platform. This module provides 4 Form-C outputs (SPDT changeover contacts) and 4 digital inputs, enabling flexible control and monitoring of auxiliary equipment within substations and industrial power systems. The UR-7JH is characterized by the order code "7J", which designates this specific I/O configuration in the UR series.

The module's Form-C outputs provide greater switching flexibility with normally open (NO), normally closed (NC), and common (C) terminals, making it ideal for applications requiring changeover contact logic. The UR-7JH is fully compatible with EnerVista UR software for streamlined configuration and diagnostics.

Key Features

• 4 × Form-C outputs (SPDT changeover contacts) for flexible switching
• 4 × Digital inputs for external signal monitoring
• Form-C contact versatility — NO, NC, and Common terminals per output
• Modular plug-and-play design for easy installation and system upgrades
• FlexLogic™ programmable logic support for custom protection schemes
• Compatible with EnerVista UR Setup Software

Technical Specifications

Applications

• Substation automation — breaker status monitoring, interlocking, and control
• Generator and transformer protection — digital I/O expansion for trip and alarm signaling
• Feeder protection — auxiliary equipment control and status indication
• Industrial power systems — control of fans, valves, alarms, and other auxiliary devices
• SCADA integration — status input and command output interfaces

Compatibility

The UR-7JH is fully compatible with the GE Multilin UR Series universal relay family. Modules can be mixed within the same chassis for scalable system upgrades. Always ensure replacement modules match the original type and order code to prevent hardware mismatch errors.

Installation Guide

1. Power Down: Completely de-energize the UR relay chassis. Never install or remove modules while energized.
2. ESD Protection: Wear a grounded ESD wrist strap before handling the module.
3. Slot Verification: Confirm the target slot is empty and matches the module orientation.
4. Module Insertion: Slide the UR-7JH into the chassis guide rails, aligning the rear terminal block with the backplane connector.
5. Secure Mounting: Tighten the faceplate retention screws to the specified torque.
6. Wiring: Connect field wiring per the UR series wiring diagram. Form-C outputs provide NO, NC, and Common terminals for flexible switching.
7. Configuration: Power on and configure via EnerVista UR Setup software.

FAQ

Q: What does the "7J" order code signify?
A: The "7J" designates a digital I/O module with 4 Form-C outputs + 4 digital inputs.

Q: What is the difference between Form-A and Form-C outputs?
A: Form-A is a single normally open (NO) contact. Form-C is a changeover (SPDT) contact with NO, NC, and Common terminals, providing greater switching flexibility.

Q: Can the UR-7JH be used for breaker tripping?
A: The Form-C outputs can be used for breaker control. For high-current tripping applications, verify contact ratings against your breaker coil requirements.

Q: Is hot-swapping supported?
A: No. Always remove control power before installing or removing any module.

Selection Tips

• Choose UR-7JH when you need a balanced 4-in / 4-out configuration with Form-C changeover contacts.
• For more Form-C outputs (6 or 8), consider the UR-6CH or UR-6EV.
• For Form-A outputs, consider the UR-6HH, UR-6TH, or UR-6UH.
• Always cross-reference the UR series order code guide before ordering.

Ordering Information