Technical Specifications Channel Configuration: 6 channels configurable digital input / relay output Relay Contact Form: Form‑C high‑capacity mechanical contact Contact Switching Rating: 8A @250V AC / 8A @30V DC Digital Input Operating Voltage: 48‑250V DC Back‑plane Bus: 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, IEC61010 substation automation compliance
Functional Features 6‑channel freely configurable digital input and relay output resources. High‑current Form‑C relay contact adapts to heavy‑load trip and alarm output scenario. Comprehensive per‑channel self‑diagnosis monitors input circuit and relay contact health status. Real‑time status data and control command interaction with main CPU via back‑plane bus. Front‑panel LED status indicator lamps for direct observation of each channel working state.
Application Scenarios High‑load trip‑circuit signal output for substation protection relay. Circuit‑breaker and disconnect‑switch position signal acquisition. Complex protection interlock logic signal expansion for UR series protection system. Industrial power plant auxiliary equipment status monitoring and control output. 
Structural Characteristics Standard single‑slot metal plug‑in housing compatible with UR series chassis slot structure. Front‑panel LED indicator array corresponds to each I/O channel operating status. Rear‑side golden‑finger back‑plane connector for bus communication and module power supply. Integrated internal electromagnetic shielding structure for suppressing substation electromagnetic interference. Lock‑in latch for stable installation and convenient hot‑swap pulling‑out operation.
Working PrincipleSignal conditioning circuit converts raw field signal into recognizable digital logic signal. Main CPU issues control instruction through back‑plane bus to drive on‑board mechanical relay contact to complete trip or alarm output action.
Installation Requirements Insert module into reserved expansion slot of UR series standard chassis. Complete reliable chassis protective grounding complying with substation grounding specification. Field‑signal wiring shall use shielded twisted‑pair cables, keep separate routing from high‑voltage power cables.
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