{"product_id":"abb-07kr51-07-kr-51-compact-plc-basic-unit","title":"ABB 07KR51 07 KR 51 Compact PLC Basic Unit","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB 07KR51\u003c\/strong\u003e (Product ID: \u003cstrong\u003e1SBP260511R1001\u003c\/strong\u003e) is a \u003cstrong\u003ecompact PLC basic unit\u003c\/strong\u003e from the \u003cstrong\u003eAdvant Controller 31 (AC31)\u003c\/strong\u003e series. Featuring \u003cstrong\u003e8 digital inputs\u003c\/strong\u003e and \u003cstrong\u003e6 relay outputs\u003c\/strong\u003e, this controller is designed for small to medium-scale automation tasks where reliability and cost-efficiency are paramount. With \u003cstrong\u003e34 kB of user program memory\u003c\/strong\u003e, the 07KR51 delivers robust performance for machine control, process monitoring, and building automation applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e ABB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct ID:\u003c\/strong\u003e 1SBP260511R1001\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e AC31 PLC Basic Unit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Inputs:\u003c\/strong\u003e 8 channels, 24 V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Outputs:\u003c\/strong\u003e 6 channels, relay type\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUser Program Memory:\u003c\/strong\u003e 34 kB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 24 V DC \/ 230 V AC (variant dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to +55°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -40°C to +75°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e DIN rail EN 50022-35 or 4 × M4 screws\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection Rating:\u003c\/strong\u003e IP20\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated I\/O:\u003c\/strong\u003e Built-in 8 DI \/ 6 DO eliminates the need for separate I\/O modules in small applications, reducing cabinet space and wiring costs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelay Outputs:\u003c\/strong\u003e Relay-type outputs provide flexibility for AC or DC load switching up to 2 A per channel.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCS31 System Bus Master:\u003c\/strong\u003e Functions as a bus master for decentralized automation, supporting up to 31 remote I\/O stations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Programming Languages:\u003c\/strong\u003e Supports LD (Ladder Diagram), FBD (Function Block Diagram), SFC (Sequential Function Chart), and IL (Instruction List) per IEC 61131-3.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReal-Time Clock:\u003c\/strong\u003e Built-in RTC for time-stamped events and scheduling functions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Diagnostics:\u003c\/strong\u003e Comprehensive LED indicators for input\/output status and system diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePackaging machinery and material handling\u003c\/li\u003e\n  \u003cli\u003eHVAC control and building automation\u003c\/li\u003e\n  \u003cli\u003eWater pump and compressor control\u003c\/li\u003e\n  \u003cli\u003eConveyor systems and sorting equipment\u003c\/li\u003e\n  \u003cli\u003eSmall-scale process control loops\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Secure the unit on a 35 mm DIN rail (EN 50022) using the snap-fit mechanism, or fasten with 4 × M4 screws. Maintain vertical orientation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Connection:\u003c\/strong\u003e Connect the appropriate power supply (24 V DC or 230 V AC depending on variant) to terminals L+ and M. Observe polarity for DC variants.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eI\/O Wiring:\u003c\/strong\u003e Wire digital inputs (24 V DC) and relay outputs to the removable screw terminals. Max conductor cross-section: \u003cstrong\u003e2.5 mm²\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCS31 Bus Setup:\u003c\/strong\u003e If using remote I\/O, connect the CS31 bus cable and set the bus address via the coding switch.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgramming:\u003c\/strong\u003e Connect a programming device via the serial interface and download the application using ABB's AC31 programming software.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommissioning:\u003c\/strong\u003e Verify all I\/O LEDs, test input signals, and confirm relay output operation before placing the system in RUN mode.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 07KR51 and 07KT51?\u003c\/strong\u003e\u003cbr\u003e\nA: The \u003cstrong\u003e07KR51\u003c\/strong\u003e features \u003cstrong\u003erelay outputs\u003c\/strong\u003e (6 DO relay), while the \u003cstrong\u003e07KT51\u003c\/strong\u003e uses \u003cstrong\u003etransistor outputs\u003c\/strong\u003e (6 DO transistor). The KR variant is preferred for AC load switching; the KT variant offers faster switching for DC loads.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can the 07KR51 communicate with other PLCs?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, via the CS31 system bus and optional communication modules (07KP90, 07KP93, 07MK92), the 07KR51 can exchange data with other AC31 controllers and external systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What programming software is required?\u003c\/strong\u003e\u003cbr\u003e\nA: ABB's \u003cstrong\u003eAC31 programming tools\u003c\/strong\u003e (such as 907 AC 1131) are used to develop, download, and debug applications for the 07KR51.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this unit suitable for outdoor installation?\u003c\/strong\u003e\u003cbr\u003e\nA: No, the IP20 rating requires installation inside a protective enclosure. For outdoor use, select a NEMA\/IP-rated cabinet with proper environmental controls.\u003c\/p\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eChoose \u003cstrong\u003e07KR51\u003c\/strong\u003e for AC load switching (motors, solenoids, contactors); choose \u003cstrong\u003e07KT51\u003c\/strong\u003e for high-speed DC switching (sensors, LEDs, low-voltage coils).\u003c\/li\u003e\n  \u003cli\u003eVerify power supply variant: 24 V DC or 230 V AC — order the correct model suffix.\u003c\/li\u003e\n  \u003cli\u003eFor applications requiring analog I\/O, pair with \u003cstrong\u003e07AC91\u003c\/strong\u003e or \u003cstrong\u003e07AI91\u003c\/strong\u003e expansion modules via CS31 bus.\u003c\/li\u003e\n  \u003cli\u003eLeave at least \u003cstrong\u003e20 mm\u003c\/strong\u003e clearance on all sides for adequate air circulation.\u003c\/li\u003e\n  \u003cli\u003eConsider the \u003cstrong\u003e07KT97\u003c\/strong\u003e for larger applications requiring more memory (480 kB) and built-in analog I\/O.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53797567561912,"sku":"07KR51","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/07KR51_r180.png?v=1784701640","url":"https:\/\/www.globalpetroparts.com\/products\/abb-07kr51-07-kr-51-compact-plc-basic-unit","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}