{"product_id":"general-electric-is420ydias1b-discrete-contact-i-o-module","title":"General Electric IS420YDIAS1B Discrete Contact I\/O Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eGE IS420YDIAS1B\u003c\/strong\u003e is a \u003cstrong\u003eDiscrete Contact I\/O Pack\u003c\/strong\u003e for the Mark VIeS functional safety system. It provides the electrical interface between one or two I\/O Ethernet networks and a discrete input terminal board, supporting \u003cstrong\u003e24 contact inputs\u003c\/strong\u003e with 1500 V isolation. The pack features a common processor board and a dedicated acquisition board, with dual RJ-45 Ethernet connectors and a three-pin power input for redundant network connectivity. \u003cstrong\u003eReference:\u003c\/strong\u003e GEH-6855 (Mark VIeS Functional Safety).\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e IS420YDIAS1B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Discrete Contact I\/O Pack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Mark VIeS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChannels:\u003c\/strong\u003e 24 discrete contact inputs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Isolation:\u003c\/strong\u003e 1500 V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Filter AC Rejection:\u003c\/strong\u003e 125 V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Threshold:\u003c\/strong\u003e 50% of contact wetting voltage (clamped to 13% minimum)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnder-Voltage Detection:\u003c\/strong\u003e Annunciates when wetting voltage drops below 40% nominal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 28 VDC nominal (via 3-pin connector)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEthernet:\u003c\/strong\u003e Dual RJ-45 connectors (redundant IONet)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eField Connection:\u003c\/strong\u003e DC-37 pin connector to terminal board\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 8.26 × 4.19 × 12.1 cm (H × W × D)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.8 kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -40°C to +70°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEnvironmental \u0026amp; Safety Certifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -40°C to +70°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -40°C to +85°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 5% to 95% RH (non-condensing)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafety Rating:\u003c\/strong\u003e SIL 2 \/ SIL 3 capable (Mark VIeS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHazardous Locations:\u003c\/strong\u003e Class I Div 2 \/ ATEX Zone 2\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eMount the IS420YDIAS1B I\/O pack directly onto the compatible terminal board (e.g., TBDI).\u003c\/li\u003e\n  \u003cli\u003eConnect dual RJ-45 Ethernet cables to primary and redundant IONet switches.\u003c\/li\u003e\n  \u003cli\u003eApply 28 VDC power via the 3-pin connector.\u003c\/li\u003e\n  \u003cli\u003eConfigure input debounce, threshold, and alarm parameters via ToolboxST.\u003c\/li\u003e\n  \u003cli\u003eVerify each input channel using the onboard yellow status LEDs and forced-input test mode.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: What is the difference between YDIAS1A and YDIAS1B?\u003c\/strong\u003e\u003cbr\u003eA: The S1B revision features updated ATEX Zone 2 Group IIC certification and enhanced hardware compared to S1A.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: Can YDIAS1B be used in TMR configurations?\u003c\/strong\u003e\u003cbr\u003eA: Yes, three YDIAS1B packs can be deployed in TMR for safety-critical applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: What terminal boards are compatible?\u003c\/strong\u003e\u003cbr\u003eA: It mates with Mark VIeS discrete input terminal boards via the DC-37 pin connector.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ: How does the under-voltage detector work?\u003c\/strong\u003e\u003cbr\u003eA: If contact wetting voltage drops below 40% of nominal, the module annunciates a fault to the controller.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSpecify IS420YDIAS1B for Mark VIeS safety systems requiring 24-channel discrete input acquisition.\u003c\/li\u003e\n  \u003cli\u003eEnsure compatible terminal boards and 28 VDC power supplies are available.\u003c\/li\u003e\n  \u003cli\u003eUse dual Ethernet connections for redundant IONet architectures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eData Source:\u003c\/strong\u003e Verified against GE official manual \u003cstrong\u003eGEH-6855\u003c\/strong\u003e (Mark VIeS Functional Safety) and WOC hardware specifications.\u003c\/em\u003e\u003c\/p\u003e","brand":"GE Fanuc","offers":[{"title":"Default Title","offer_id":53776597745848,"sku":"IS420YDIAS1B","price":300.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/IS420YDIAS1B_2.png?v=1784184274","url":"https:\/\/www.globalpetroparts.com\/products\/general-electric-is420ydias1b-discrete-contact-i-o-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}