{"product_id":"honeywell-51306856-175-8c-tdil01-8u-tdil01-digital-input-module","title":"Honeywell 51306856-175 8C-TDIL01 8U-TDIL01 Digital Input Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 51306856-175\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e8C-TDIL01\u003c\/strong\u003e Digital Input Module (base assembly \u003cstrong\u003e8U-TDIL01\u003c\/strong\u003e), operates as a dedicated hardware component for field line monitoring and digital status acquisition within Honeywell C300 redundant controller platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e51306856-175 \/ 8C-TDIL01 \/ 8U-TDIL01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.45 kg (1.00 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e152.4 x 101.6 x 38.1 mm (6.00 x 4.00 x 1.50 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePowered via C300 IOTA backplane bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital Input Module with Line Monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController Support\u003c\/td\u003e\n\u003ctd\u003eC300 Redundant Controller Pair (CP1 \/ CP2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Power Type\u003c\/td\u003e\n\u003ctd\u003eIntegrated non-incendive field loop power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitch Interface\u003c\/td\u003e\n\u003ctd\u003eExternal Battery \u0026amp; Key Switch Module (BKM) wiring interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation and 4-20 mA HART Loop Protocol\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-to-Channel Isolation\u003c\/strong\u003e: Electrically isolates individual discrete field input circuits from internal controller logic to prevent ground loop noise propagation and protect processing units from voltage transients.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine Fault Diagnostics\u003c\/strong\u003e: Detects open-circuit broken field wires in real time, triggering soft-failure alarm notifications to maintain process visibility without interrupting running logic loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20 mA HART Loop Protocol\u003c\/strong\u003e: Integrates non-incendive channel power distribution directly through the module assembly, eliminating external marshalling hardware across monitored loop circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the 51306856-175 module identify physical field wiring issues?\u003c\/p\u003e\n\u003cp\u003eA: The module continuously monitors input circuit continuity to detect broken field wires, generating a soft-failure system alert for corrective maintenance while maintaining controller operation.\u003c\/p\u003e\n\u003cp\u003eQ: What function do the Reset and Force Enable key switches perform in the C300 system topology?\u003c\/p\u003e\n\u003cp\u003eA: Wired via the Battery and Key switch module (BKM) to both CP1 and CP2, the Reset switch restarts halted components without forcing a controller switch-over, while the Force switch enables or disables I\/O point forcing.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 8C-TDIL01 digital input module require external field power marshalling terminals?\u003c\/p\u003e\n\u003cp\u003eA: No, the assembly supplies integrated non-incendive field power with individual channel protection, eliminating the need for separate power distribution marshalling panels.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey Switch Module Wiring\u003c\/strong\u003e: Route lead connections from the external Battery and Key switch module (BKM) to both primary (CP1) and secondary (CP2) controller termination points before energizing the rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine Monitoring Resistor Network\u003c\/strong\u003e: Ensure appropriate end-of-line (EOL) resistor networks are correctly installed at field contacts when utilizing open-circuit line fault detection features.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Incendive Loop Wiring\u003c\/strong\u003e: Verify field instrument wiring meets hazardous area non-incendive field wiring parameters before powering field loops directly from module channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIOTA Grounding Continuity\u003c\/strong\u003e: Securely lock the module onto its designated Input Output Termination Assembly (IOTA) slot and verify mechanical grounding tabs make full contact with the cabinet DIN rail.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":48599873814718,"sku":"51306856-175 8C-TDIL01 8U-TDIL01","price":360.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-08-06_10-17-32_1200x1200_db89bd1a-90c1-4696-9716-5b99a382aab9.jpg?v=1786090139","url":"https:\/\/www.autooiltech.com\/products\/honeywell-51306856-175-8c-tdil01-8u-tdil01-digital-input-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}