{"product_id":"ge-is420ydoas1b-mark-vies-functional-safety-discrete-output-i-o-pack","title":"GE IS420YDOAS1B Mark VIeS Functional Safety Discrete Output I\/O Pack","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eIS420YDOAS1B\u003c\/strong\u003e is a discrete output I\/O pack developed for the General Electric Mark VIeS Functional Safety System. It provides a high-reliability electrical and logical interface between control logic and discrete process actuators, operating across 12 discrete output channels. The module accepts logic commands from the safety controller and translates them into control signals distributed via a compatible terminal board.\u003c\/p\u003e\n\u003cp\u003eDesigned for deployment in safety-critical loops, the \u003cstrong\u003eIS420YDOAS1B\u003c\/strong\u003e works in tandem with terminal boards like the IS410SRLYS2A for simplex setups or the IS410TRLY series for configurations requiring dual-fusing, contact wetting, load integrity sensing, or TMR (Triple Modular Redundant) 2-out-of-3 voting. The unit features internal diagnostics to continuously verify commanded output states against physical hardware feedback.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProvides hardware and logic interfacing for 12 discrete\/contact output circuits.\u003c\/li\u003e\n\u003cli\u003eUniversally compatible across all standard safety discrete\/contact output configurations.\u003c\/li\u003e\n\u003cli\u003eSupports integration into both Simplex and Triple Modular Redundant (TMR) safety architectures.\u003c\/li\u003e\n\u003cli\u003eEnables power-up self-testing, hardware health monitoring, and loop diagnostics.\u003c\/li\u003e\n\u003cli\u003eIntegrated visual status LEDs for immediate, localized module health diagnosis.\u003c\/li\u003e\n\u003cli\u003eCircuit health variables are explicitly exposed to the control logic for real-time monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMark VIeS Functional Safety Systems.\u003c\/li\u003e\n\u003cli\u003eEmergency Shutdown (ESD) systems.\u003c\/li\u003e\n\u003cli\u003eCritical solenoid and process actuator control.\u003c\/li\u003e\n\u003cli\u003eHigh-availability, SIL-rated relay contact output loops.\u003c\/li\u003e\n\u003cli\u003eInterfacing in hazardous industrial environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical 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\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGE (General Electric) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIS420YDOAS1B \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDiscrete Output I\/O Pack \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 discrete\/relay outputs \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O Scan Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConfigured frame rate of the controller determines I\/O scan rate \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDC Control Power Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 \/ 28 V dc, 19.8 W max (includes power to drive output relay coils) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDC Power Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMicro Mate-N-Lok receptacle (AMP 1445022-3) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure Construction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum case \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Diagnostics\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower-up self test, hardware health, commanded output vs feedback checks \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSequence of Events (SOE)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConfigurable for SOE of relay feedbacks \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmbient Operational Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 to 70 degC (-40 to 158 degF) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 degC (-40 to 185 degF) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eG3 Compliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSystem Compatibility and Terminal Boards\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eIS420YDOAS1B\u003c\/strong\u003e I\/O pack must be paired with a compatible terminal board to execute field operations. The board selection dictates the circuit redundancy, voting behavior, and fusing attributes.\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eTerminal Board\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eRedundancy Configuration\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eRelay\/Channel Attributes\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFusing \u0026amp; Wetting Capability\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIS410SRLYS2A\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSimplex \u003c\/td\u003e\n\u003ctd\u003e12 Form-C relays \u003c\/td\u003e\n\u003ctd\u003eDry, no fusing natively; supports optional IS400WROxx daughterboards \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIS410TRLYS1B\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSimplex or TMR \u003c\/td\u003e\n\u003ctd\u003e12 Form-C relays \u003c\/td\u003e\n\u003ctd\u003eContacts 1-6 wetted \u0026amp; dual fused for solenoids; Contacts 7-11 dry Form-C; Contact 12 separate wetting \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIS410TRLYS1D\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSimplex or TMR \u003c\/td\u003e\n\u003ctd\u003e6 NO relays \u003c\/td\u003e\n\u003ctd\u003eSolenoid integrity sensing with load resistance measurement; dual fused \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIS410TRLYS1F\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTMR \u003c\/td\u003e\n\u003ctd\u003e12 NO Relays (Form-A), TMR voted \u003c\/td\u003e\n\u003ctd\u003eDry contacts \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIS410TRLYS2F\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTMR \u003c\/td\u003e\n\u003ctd\u003e12 NC Relays (Form-B), TMR voted \u003c\/td\u003e\n\u003ctd\u003eDry contacts \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e The I\/O pack mounts directly onto the designated header pins of the compatible S-type or TMR relay contact output terminal board. Secure the unit mechanically using the hardware provided to withstand environmental vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Connection:\u003c\/strong\u003e Deliver local control power through the integrated Micro Mate-N-Lok receptacle. Ensure the input voltage stays within the nominal 24 to 28 V dc limits to avoid thermal overload or tripping safety boundaries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVentilation:\u003c\/strong\u003e Maintain clean airflow around the aluminum casing. Ambient temperatures surrounding the module must not exceed 70 degC under continuous operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Wiring:\u003c\/strong\u003e All field wiring is terminated directly on the host terminal board (using Euro-style or barrier blocks depending on model selection) rather than the I\/O pack itself. Wire sizing should be between 24 AWG minimum and 12 AWG maximum.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctional Safety:\u003c\/strong\u003e Compliant with IEC 61508.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous Locations:\u003c\/strong\u003e Class 1, Div 2 \/ Class 2, Zone 2 \/ ATEX compliant for designated applications.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":52695413948779,"sku":"IS420YDOAS1B","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/general-electric-is420ydoas1b-discrete-output-module-ywsgr5s0pg3_b4b516e1-607d-4102-86c3-30c070767eec.jpg?v=1766135167","url":"https:\/\/www.plcprotech.com\/fa\/products\/ge-is420ydoas1b-mark-vies-functional-safety-discrete-output-i-o-pack","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}