{"product_id":"sr3b261jd-schneider-electric-zelio-logic-smart-relay-26-i-o-12v-dc-controller-unit","title":"SR3B261JD Schneider Electric Zelio Logic Smart Relay 26 I\/O 12V DC Controller Unit","description":"\u003ch3\u003eEngineering Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #0056b3;\"\u003eSR3B261JD\u003c\/strong\u003e \u003cstrong style=\"color: #0056b3;\"\u003eSchneider Electric\u003c\/strong\u003e \u003cstrong style=\"color: #0056b3;\"\u003eZelio Logic\u003c\/strong\u003e smart relay provides compact, reliable control for small-scale automation tasks. Designed as a modular 26 I\/O controller operating on 12V DC, this \u003cstrong style=\"color: #0056b3;\"\u003eSR3B261JD\u003c\/strong\u003e unit features an integrated real-time clock and an onboard LCD screen for direct parameter adjustments.\u003c\/p\u003e\n\u003ch3\u003eCore Technical Architecture\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTechnical Parameter\u003c\/th\u003e\n\u003cth\u003eOperational Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer \u0026amp; Model\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong style=\"color: #0056b3;\"\u003eSchneider Electric\u003c\/strong\u003e \u003cstrong style=\"color: #0056b3;\"\u003eSR3B261JD\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series \u0026amp; Type\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong style=\"color: #0056b3;\"\u003eZelio Logic\u003c\/strong\u003e Modular Smart Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal I\/O Points\u003c\/td\u003e\n\u003ctd\u003e26 I\/O (16 Digital Inputs, 10 Relay Outputs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Input Capability\u003c\/td\u003e\n\u003ctd\u003e6 digital inputs configurable as 12V DC analog inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Output Rating\u003c\/td\u003e\n\u003ctd\u003e5 A per output (Mechanical life: 10M cycles, Electrical life: 500k cycles)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e12V DC (Operates within 10.4V to 14.4V range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgramming Capacity\u003c\/td\u003e\n\u003ctd\u003e240 lines ladder diagram \/ 500 blocks FBD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface \u0026amp; Display\u003c\/td\u003e\n\u003ctd\u003eIntegrated LCD display with navigation buttons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting \u0026amp; Weight\u003c\/td\u003e\n\u003ctd\u003e35 mm DIN rail mount, Weight 0.30 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eInstallation \u0026amp; Panel Wiring Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the unit securely onto a standard 35 mm DIN rail inside a protective electrical enclosure.\u003c\/li\u003e\n\u003cli\u003eEnsure power supply voltage remains strictly within the 10.4V to 14.4V DC window to prevent reset loops.\u003c\/li\u003e\n\u003cli\u003eConnect 12V DC power lines to dedicated supply terminals with appropriate overcurrent fusing.\u003c\/li\u003e\n\u003cli\u003eWire digital and analog sensor inputs to designated terminals, ensuring proper shielding for analog signals.\u003c\/li\u003e\n\u003cli\u003eConnect actuator loads to relay output terminals, keeping switching currents below the 5 A threshold.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommissioning \u0026amp; Parameter Optimization\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProgram control logic directly via the front LCD panel or upload code using Zelio Soft 2 software.\u003c\/li\u003e\n\u003cli\u003eConfigure real-time clock parameters to schedule time-based automated operational cycles.\u003c\/li\u003e\n\u003cli\u003eCalibrate analog input scaling factors when interfacing with 12V DC pressure or temperature transmitters.\u003c\/li\u003e\n\u003cli\u003eTest relay output switching states manually through diagnostic menu options during initial dry-runs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuilt-In Diagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReal-time status monitoring of active digital and analog I\/O points via the LCD display.\u003c\/li\u003e\n\u003cli\u003eInternal cycle time tracking and memory error detection during program execution.\u003c\/li\u003e\n\u003cli\u003eDiagnostic flags for supply voltage fluctuation warnings outside acceptable tolerance levels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommercial Terms, Fulfillment \u0026amp; Warranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eExpedited global dispatch processed within 24 to 48 hours.\u003c\/li\u003e\n\u003cli\u003eTrusted courier networks: FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003eBacked by a reliable 12-month operational warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eIn mobile machinery and battery-powered remote pumping stations, 12V DC power supplies frequently experience voltage sags during heavy motor startup. Field engineers can prevent unexpected controller reboots on the \u003cstrong style=\"color: #0056b3;\"\u003eSR3B261JD\u003c\/strong\u003e by installing an auxiliary smoothing capacitor or a regulated DC-DC buffer on the main supply input line.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat factors should guide my choice between ladder logic and FBD programming?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse ladder logic for straightforward relay replacement tasks up to 240 lines, and choose Function Block Diagram (FBD) when implementing complex timing or analog math functions within the 500-block limit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow can I utilize the 6 configurable analog inputs effectively?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConnect 0-10V or potentiometer-based 12V sensors to inputs I1 through I6, then configure their scaling parameters in the software to monitor process variables like tank levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum electrical lifespan of the relay output contacts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe relay outputs deliver up to 500,000 operations under standard AC-12 inductive loads (230V, 1.5A), and significantly more under resistive low-voltage DC loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the LCD display show a communication error when adding expansion modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis typically occurs if the side connector bus pins are misaligned or if power was left active during physical module connection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I maintain accurate time scheduling during power outages?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe integrated real-time clock features a built-in backup capacitor that maintains time settings for days without external power; ensure the unit is powered periodically to recharge it.\u003c\/p\u003e\n\u003cp\u003e```eof\u003c\/p\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":50493890691254,"sku":"SR3B261JD","price":109.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/SR3B261JD-3.jpg?v=1790059876","url":"https:\/\/www.plcsparehub.com\/products\/sr3b261jd-schneider-electric-zelio-logic-smart-relay-26-i-o-12v-dc-controller-unit","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}