GE UR6UH DIGITAL I/O MODULE
Product Introduction
The GE UR6UH is a digital I/O module within the GE Multilin UR series. It mates with UR universal relay main units to acquire field discrete signals and perform relay‑output control for auxiliary equipment, alarm circuits and field switch points. Equipped with 4 digital inputs and 6 Form‑A normally‑open relay outputs, it lacks circuit‑monitoring capability. It communicates with UR‑series protection relays via the backplane bus without extra external communication cables. Parameters are configured either through the EnerVista UR software or the local front‑panel keypad. Widely deployed in power‑protection and substation‑automation applications for point expansion, it addresses insufficient native I/O channels on main protection devices.
Technical Specifications
Digital Input Channels: 4
Digital Output Channels: 6 Form‑A normally‑open relay outputs
Relay Contact Rating: 250VAC / 30VDC, 5A
Input Signal Type: Opto‑isolated discrete digital signals
Mounting: UR rack slot‑mounted, occupies 1 standard slot
Configuration: EnerVista UR software, relay local LCD keypad
Power Supply: Powered by UR relay rack backplane; no external power required
Operating Temperature: ‑40℃ ~ +70℃
Relative Humidity: 5%‑95%, non‑condensing
EMC Performance: Complies with industrial power‑equipment EMC standards
Weight: Approx. 0.75 kg
Dimensions: Standard 6U half‑rack form factor
Core Advantages
The GE UR6UH acquires external contact status from protection devices and drives field alarms, interlocks and auxiliary circuits via relay outputs. Its modular backplane‑direct‑connect architecture reduces field wiring work.
Hot‑swap capable for replacement during equipment shutdown maintenance, streamlining spare‑part servicing.
Opto‑isolated input loops suppress field interference and mitigate electromagnetic noise impacting the main protection relay.
Channel logic is freely assignable by software: inputs map remote‑indication points, while outputs bind protection trips, alarms and event‑triggered logic.
Deep firmware compatibility with UR‑series hosts feeds status‑change and event data directly into the device event log for fault traceability.
Product Features
Plug‑and‑play slot‑style installation; no rack‑rewiring needed.
Relay outputs are Form‑A normally‑open with no circuit‑break monitoring.
Fully isolated signal circuits for harsh‑EMI environments such as substations and plant auxiliary power systems.
No independent communication port; all data is routed over the UR relay backplane bus.
Supports on‑line parameter modification with instant activation; full‑device reboot is unnecessary.
Reinforced metal housing provides vibration‑shock resistance for continuous long‑term cabinet‑mounted operation.
Application Fields
‑ Substation relay‑protection systems for I/O‑point expansion of line, transformer and generator protection devices
‑ Power‑plant auxiliary‑power control systems for auxiliary‑device status acquisition and alarm output
‑ Industrial‑enterprise distribution automation for high‑voltage‑cabinet interlock and signal‑circuit expansion
‑ New‑energy power stations: I/O extension for wind‑farm and PV step‑up‑station protection‑and‑control systems
‑ Railway‑transit power‑protection cabinets for discrete‑signal acquisition and interlock control
Product Comparison
Comparison between GE UR6UH and peer UR‑series digital I/O modules UR6PH, UR6DH.
‑ UR6UH: 4DI + 6 Form‑A outputs, no circuit monitoring. Cost‑effective for general alarm and ordinary interlock circuits.
‑ UR6DH: Output‑circuit‑monitoring variant, suited for critical trip loops requiring wire‑break detection; higher cost.
‑ UR6PH: Different channel count for projects demanding higher input‑point density.
Selection guidance: Choose GE UR6UH for ordinary signal and alarm loops. Select circuit‑monitor‑equipped UR6DH for trip and safety‑critical circuits.
Compatible Products
Works with UR‑series universal‑protection‑relay main units, compatible with: B30, C30, C60, F35, L60, T60.
Configuration Software: EnerVista UR software for parameter setup, diagnostics and firmware review of the GE UR6UH.
Rack: UR‑series standard horizontal rack; module inserts directly into rack slots.
Spare Accessories: UR‑series module latches, rack backplanes.
FAQ
Q: Does the GE UR6UH support hot‑swap?
A: Hardware supports hot‑swap. Nonetheless, perform replacement during non‑operational maintenance windows to avoid unintended relay‑output actuation.
Q: Do the GE UR6UH relay outputs feature circuit monitoring?
A: UR6UH provides unmonitored Form‑A outputs. Use UR6DH if wire‑break detection is required.
Q: Which main units accept the GE UR6UH?
A: Only GE Multilin UR‑series protection relays including B30, C30, C60, F35, L60, T60. Direct connection to third‑party PLCs is unsupported.
Q: Can I configure the GE UR6UH without EnerVista software?
A: Yes. I/O‑logic assignment can be completed via the protection‑relay local LCD keypad.
Q: Can UR6UH input channels accept AC signals?
A: Inputs are DC‑coupled digital inputs; AC‑voltage inputs are not permitted. Matching DC signal levels are required.
Q: Will direct same‑model replacement of a faulty UR6UH bring it into service immediately?
A: After hardware replacement, verify the I/O‑logic configuration inside the protection relay. Re‑download parameters if configuration data is lost.
Q: What is the key difference between UR6UH and UR6DH?
A: UR6DH implements output‑circuit monitoring to detect wire breaks; UR6UH omits this function and serves general‑signal loops.
Q: What critical information should be confirmed before purchasing UR6UH?
A: Confirm existing UR main‑unit model, firmware revision, free rack‑slot quantity, and whether output loops require wire‑break monitoring.
Recommended GE‑brand Part Numbers
UR6UH, Digital I/O Module
UR6DH, Digital I/O Module
UR6PH, Digital I/O Module
UR6TH, Digital I/O Module
UR5CH, Transducer I/O Module
UR5EH, Transducer I/O Module
UR7UH, Digital I/O Module
Technical Documents
Refer to GE Multilin UR‑series hardware manuals, document numbers GER‑4478, GER‑4903.
GE UR6UH hardware specifications are covered within the UR Universal Relay hardware documentation.
Configuration procedures are documented in the EnerVista UR software operation manual.
Firmware revisions must match the host‑relay firmware; mismatched versions may cause channel‑recognition failures.
Important Notes
‑ The GE UR6UH shall draw power exclusively from the UR rack backplane. Do not feed external power directly to the module.
‑ Relay‑contact load shall not exceed the rated 5A to prevent contact erosion.
‑ Avoid mechanical stress or board‑level impact during handling and installation to protect backplane gold‑plated contacts.
‑ Apply surge‑suppression measures for field wiring; high‑voltage transients may damage module channels.
‑ Verify part numbers during spare‑part replacement. Do not substitute UR6UH for UR6DH within trip circuits.
Product Tags
GE UR6UH, Digital I/O Module, GE Multilin UR series, UR digital IO module, relay‑protection expansion module, UR series spare parts, GE protection relay I/O card, substation protection spare parts
