Technical Specifications Digital Input Channels: 16 configurable digital input channels Digital Output Channels: 16 configurable relay output channels Digital Input Voltage Range: 24‑125 VDC Output Contact Rating: 2A per channel @125VDC Back‑plane Interface: UR series internal high‑speed system bus Module Slot: Single‑slot UR chassis plug‑in module Operating Temperature: ‑40℃ ~ +70℃ Storage Temperature: ‑50℃ ~ +85℃ Relative Humidity: 5%‑95%, non‑condensing Certifications: UL, CE, IEC61850 substation equipment compliance
Functional Features High‑density 16‑input and 16‑output channel resources for massive discrete‑signal expansion. Configurable channel function assignment for digital status acquisition and control output. Built‑in per‑channel hardware self‑diagnosis for circuit health‑status monitoring. High‑speed real‑time data interaction with main CPU through chassis back‑plane bus. Front‑panel LED indicator lamps for each channel state visual observation. Support hot‑swap replacement under system running operating status. Channel parameter configuration completed via official UR configuration software tool.
Application Scenarios Complex multi‑bay substation protection interlock signal expansion. Mass‑quantity circuit‑breaker and switchgear position‑status signal acquisition. Large‑scale alarm‑signal centralized output for UR series protection system. Power plant auxiliary equipment group status monitoring and control output. 
Structural Characteristics Standard single‑slot metal plug‑in housing for UR series chassis installation. Front‑panel LED indicator array corresponding to each input and output channel status. Rear‑side golden‑finger back‑plane connector for bus communication and module power supply. Internal integrated electromagnetic shielding structure to resist substation strong electromagnetic interference. Lock‑in latch mechanism ensures stable installation and supports convenient hot‑swap operation.
Working Principle Signal conditioning circuit converts field contact signal into internal‑system‑compatible digital logic level. Main CPU transmits control command through back‑plane bus to drive output relay to complete control‑signal output.
Installation Requirements Insert I/O expansion module into designated expansion slot of UR series standard chassis.
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