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- UR 6CV
- Digital I/O Module
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- 120 × 30 × 100 mm
- 0.9 kg
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Product Overview
The GE UR 6CV Multilin UR Series Digital I/O Module is a digital signal interface component used with compatible GE Multilin UR Series protection and control equipment. It forms part of the relay I/O architecture, connecting discrete external signals with the processing and control functions of the host UR Series device.
In an electrical protection system, the relay needs to know more than measured electrical quantities. Breaker position, auxiliary contacts, switch states, alarms, interlocks, and other binary conditions can influence protection and control sequences. The UR 6CV provides the hardware interface required for these types of discrete signals.
The module works together with the UR Series processor and configured logic rather than operating as an independent controller. Its practical function depends on the host relay model, assigned I/O functions, field wiring, and application configuration.
For replacement and maintenance work, the existing I/O assignment should be documented before removing the module. This helps ensure that the replacement integrates correctly with the established protection and control architecture.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | GE |
| Model | UR 6CV |
| Product Family | Multilin UR Series |
| Product Type | Digital I/O Module |
| Primary Function | Digital Signal Interface |
| System Role | Discrete I/O |
| Application | Protection and Control Systems |
| Installation | GE Multilin UR Series Devices |
| Dimensions | 120 × 30 × 100 mm |
| Weight | 0.9 kg |
Product Features
The UR 6CV is intended for discrete signal interfacing within compatible Multilin UR Series equipment.
Key characteristics include:
- GE Multilin UR Series digital I/O module
- Model UR 6CV
- Provides discrete signal interfacing
- Connects external equipment with relay functions
- Supports equipment status monitoring
- Suitable for breaker and switchgear applications
- Supports alarm and interlock circuits
- Works with configured relay logic
- Integrates with the UR Series I/O architecture
- Suitable for maintenance and replacement applications
The actual I/O functions depend on the host relay configuration and the external circuits connected to the module.
Working Principle
The UR 6CV forms part of the discrete signal path between external electrical equipment and the processing system of a Multilin UR Series relay.
A simplified architecture is:
External Equipment → UR 6CV → UR Series Processor → Protection / Control Logic → External Control Equipment
Discrete conditions from external devices are transferred through the applicable I/O circuits to the relay’s processing architecture. The processor can then evaluate these conditions together with protection elements, alarms, interlocks, and other configured logic.
When a control condition is satisfied, the corresponding relay logic can initiate an appropriate output or system response. This allows equipment status and protection decisions to be handled together within the same relay architecture.
The UR 6CV therefore functions as part of the interface between the physical electrical system and the programmable protection and automation functions inside the UR Series device.
Role in a Multilin UR Protection Architecture
The UR 6CV belongs to the digital I/O layer of the Multilin UR Series architecture.
A typical signal relationship can be represented as:
Field Equipment → UR 6CV → UR Processor → Protection / Automation Logic → Control Circuit
| System Layer | Typical Function |
|---|---|
| Field Equipment | Provides equipment status and discrete conditions |
| Digital I/O Layer | Exchanges binary signals |
| Processing Layer | Evaluates incoming conditions |
| Protection Layer | Executes configured protection functions |
| Automation Layer | Handles control and interlocking logic |
| Output Layer | Transfers commands to external circuits |
| Supervisory Layer | Monitors relay status and events |
This structure allows the relay to use external equipment conditions as part of a larger protection and control sequence.
For example, breaker status can be incorporated into an interlock or control function while the relay continues to perform its configured electrical protection tasks.
Industrial Applications
The UR 6CV is suitable for electrical protection and automation systems using compatible GE Multilin UR Series equipment.
| Application | Typical Use |
|---|---|
| Electrical Substations | Switchgear status monitoring |
| Power Generation | Generator control interfaces |
| Distribution Systems | Feeder equipment status |
| Transmission Systems | Protection interlocking |
| Motor Protection | Contactor and auxiliary signals |
| Transformer Protection | Alarm and control circuits |
| Industrial Power Systems | Equipment interlocks |
| Utility Automation | Discrete monitoring and control |
The exact application depends on the host relay, I/O configuration, and connected external equipment.
Installation and Maintenance
The UR 6CV should be installed according to the configuration of the applicable UR Series relay. Because digital I/O circuits are directly associated with external equipment, careful documentation of the existing wiring and signal assignment is recommended.
Recommended maintenance checks include:
- Confirm the complete UR 6CV model.
- Identify the host Multilin UR Series relay.
- Verify module compatibility.
- Record the module position.
- Document existing digital signal assignments.
- Identify connected equipment and control circuits.
- Isolate relevant circuits before replacement.
- Inspect connectors and terminals.
- Check field wiring for loose or damaged connections.
- Verify the module is correctly positioned.
- Ensure connectors are fully seated.
- Restore system connections according to the applicable procedure.
- Check the expected digital signal states.
- Verify configured control functions.
- Review relay diagnostic information.
- Confirm normal operation of connected equipment.
If an expected signal is missing after replacement, the investigation should include the external contact, wiring, control voltage, configuration, connectors, and associated equipment rather than focusing only on the module.
Related Components
The UR 6CV forms part of a larger Multilin UR Series protection and control system.
| Component | Function |
|---|---|
| UR Series Protection Relay | Provides protection and control functions |
| UR 6CV | Provides digital I/O interfacing |
| UR 6CH | Provides digital I/O functions |
| UR 6AH | Provides digital I/O combination functions |
| UR 5CH | Interfaces transducer-related signals |
| UR 1HH | Provides relay operating power |
| Processor Module | Executes protection and control logic |
| Breaker / Switchgear | Provides status and receives commands |
| Auxiliary Contacts | Supply equipment position signals |
| Communication Interface | Connects the relay with supervisory systems |
The correct module should be selected according to the required I/O function and the configuration of the host relay.
Recommended Related Models
For GE Multilin UR Series applications, related models can be selected according to their individual system roles.
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| GE UR 6CV | Digital I/O Module | Discrete signal interfacing |
| GE UR 6CH | Digital I/O Module | Digital signal interface |
| GE UR 6AH | Digital I/O Combination Module | Digital status and control |
| GE UR 5CH | Transducer I/O Module | Transducer signal interface |
| GE UR 1HH | Power Supply Module | Relay power infrastructure |
| GE Multilin UR Series Relays | Protection and Control Relay | Electrical protection |
Although these modules belong to the same UR Series family, they should not be selected solely by physical similarity. The required signal function and host relay configuration should determine the appropriate module.
Key Advantages
- GE Multilin UR Series digital I/O hardware
- Model UR 6CV
- Provides discrete signal interfacing
- Connects external equipment with relay logic
- Supports equipment status monitoring
- Suitable for breaker and switchgear applications
- Supports alarm and interlock functions
- Integrates with configured protection and control logic
- Suitable for utility and industrial power systems
- Useful for maintenance and replacement applications
Technical FAQs
What is the primary function of the UR 6CV in a Multilin UR system?
The UR 6CV serves as a digital I/O interface within compatible UR Series equipment. It allows configured discrete signals from external equipment to participate in the relay’s monitoring, protection, control, and automation functions.
How can the UR 6CV support switchgear monitoring?
Discrete conditions from compatible switchgear circuits can be connected to the relay through the appropriate I/O interface. The relay can then use equipment status information in configured control, alarm, and interlocking logic.
What should technicians verify before replacing a UR 6CV?
The host relay model, module position, existing signal assignments, connected field wiring, terminal arrangement, and configured logic should be identified first. This information helps ensure that the replacement fits the existing protection architecture.
Why can a field wiring problem resemble a UR 6CV module failure?
A digital I/O signal depends on the complete electrical path between the external device and the relay. A failed contact, missing control voltage, loose terminal, damaged cable, or incorrect configuration can prevent the expected signal from reaching the relay even when the UR 6CV itself is functioning correctly.