The Multilin UR6EH is a dedicated digital input output module of the UR series relays launched by GE Vernova. As a core expansion component of the UR platform, it provides 8 digital inputs and 4 Form-C contact relay outputs for main control devices including G60 generator protection relays, T60 transformer protection relays and P60 motor protection relays, enabling switching signal acquisition and control command transmission. Serving as a key interface between primary equipment and secondary protection systems, this module is widely applied in power systems and industrial automation.

Product Advantages

1. Native compatibility with UR platform, plug-and-playCustom-designed for UR series, directly connected to CPU via backplane bus. Hot-swap supported, allowing replacement and expansion without system shutdown to minimize operational risks.
2. High-reliability electrical isolation, industrial anti-interference performance2500V rms isolation between I/O channels and ground. Dual protection of optoelectronic isolation and relay isolation ensures stable operation under harsh electromagnetic conditions.
3. Compact high-density I/O, streamlined system structure8 inputs and 4 outputs integrated in one module, replacing multiple separate I/O units. It cuts cabinet wiring and space occupation, reducing hardware and construction costs.
4. Rapid response and long-service contactsOutput response time ≤5ms. Form-C contacts bear rating of 250V AC/5A, with mechanical lifespan over 100,000 times, ideal for tripping and alarming control.
   Full-lifecycle compatibility & standard complianceConforms to IEC 61850 and IEEE standards. Configurable and diagnosable via EnerVista software. Compatible with new and legacy UR main units for universal spare parts and low maintenance expenditure.
   
   

Product Features

1. Core Technical Parameters

• Digital Input: 8 channels, 24–125VDC voltage range, compatible with dry and wet contacts, optoelectronically isolated
• Digital Output: 4 Form-C (SPDT) channels, 24–250VAC/DC, 5A resistive load per contact, relay isolated
• Isolation Voltage: ≥2500V rms between channels, I/O terminals and ground
• Response Time: Input ≤2ms, Output ≤5ms
• Operating Ambient: Temperature -40℃ ~ +70℃, Humidity 5%–95% non-condensing
• Power Consumption & Weight: ≤10W, approx. 1kg 
• Dimension: 222mm×133mm×50mm, fits standard UR chassis slot

2. Functional Characteristics

• Signal Acquisition: Collect switch status signals of circuit breakers, disconnectors, earthing switches and alarm contacts
• Control Output: Actuate breaker tripping/closing, alarm lamps, solenoid valves, fans and interlocking devices
• Self-diagnosis & Event Logging: Real-time monitoring of module status, power supply and communication; fault alert and 1ms-resolution SOE recording
• Flexible Configuration: Customize input polarity, output logic and action delay via EnerVista software, supporting logic programming
• Multi-protocol Support: Adapts dedicated UR backplane bus, compatible with IEC 61850 GOOSE, Modbus and other host protocols

Application Scenarios

• Power Substation: Position monitoring of breakers and disconnectors, protective tripping and alarm linkage in 110kV and above substations
• Generator & Transformer Protection: I/O expansion for G60/T60 units, auxiliary contact collection and excitation & cooling system control
• Industrial Motor & Drive System: Access emergency stop, limit and vibration switches, output tripping, alarming and interlocking signals for P60 motor protection
• Distributed Energy & Microgrid: Switch status monitoring, grid connection control and fault isolation for photovoltaic and wind power grid-connected cabinets
• Rail Transit & Metallurgy: Switch signal monitoring and interlock control for traction power supply, rolling mill and blast furnace auxiliary equipment

FAQ

1. Does UR6EH support hot swapping?

   Yes. The UR platform allows live hot swapping. Module replacement requires no power cut, without disrupting main unit and other I/O operation. The module will be automatically identified and configured after installation.
2. How to troubleshoot unresponsive input signals?

   ① Verify normal 24–125VDC input power supply

   ② Check correct wiring polarity and tight terminal connection

   ③ Monitor input status via EnerVista. Replace the module if no status change occurs

   ④ Inspect external contacts for oxidation or poor contact
3. What causes inactive output contacts?

   ① Confirm stable power supply for output load and no short circuit

   ② Ensure valid and enabled output logic settings in EnerVista

   ③ Measure coil voltage; replace module if no voltage detected

   ④ Check blown fuses in control circuit
4. What is the operating temperature range? Is it applicable for outdoor high-temperature environments?

   Standard operating temperature ranges from -40℃ to +70℃. It can be installed in outdoor cabinets with sunshade, rainproof and ventilation measures. Over-temperature alarm activates above 70℃, and prolonged overheating reduces contact service life.
5. How to communicate with third-party SCADA systems?

   UR6EH communicates via the UR main unit with IEC 61850 GOOSE and Modbus RTU/TCP protocols. Third-party systems can access the main unit via corresponding protocols to acquire input status and control outputs without extra hardware.