{"product_id":"allen-bradley-2711-b5a3l3-panelview-550-operator-interface-terminal","title":"Allen-Bradley 2711-B5A3L3 PanelView 550 Operator Interface Terminal","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 2711-B5A3L3 is a PanelView 550 operator interface terminal designed for rugged industrial environments. This unit provides a robust human-machine interface (HMI) for real-time process monitoring, alarm logging, and manual control inputs. It communicates directly with programmable logic controllers (PLCs) to facilitate data exchange and system management. Built for demanding applications such as chemical processing, water treatment, and food packaging, this terminal features a durable design that minimizes downtime and ensures reliable operation in harsh conditions.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHybrid input system featuring both an analog resistive touchscreen (128 active cells) and a 10-key mechanical function keypad.\u003c\/li\u003e\n\u003cli\u003e5.5-inch monochrome blue-mode LCD display with 256 x 128 pixel resolution.\u003c\/li\u003e\n\u003cli\u003eIntegrated DH-485 communication port for seamless connectivity with SLC 500 and MicroLogix controller architectures.\u003c\/li\u003e\n\u003cli\u003eDedicated RS-232 serial port for local printer data logging.\u003c\/li\u003e\n\u003cli\u003eNon-volatile memory storage with support for external ATA memory cards.\u003c\/li\u003e\n\u003cli\u003eLong-life LED backlight rated for 100,000 hours of operation.\u003c\/li\u003e\n\u003cli\u003eBattery-backed real-time clock for accurate event timestamping.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis operator terminal is suitable for a wide range of industrial automation tasks, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eProcess monitoring in petroleum and chemical refineries.\u003c\/li\u003e\n\u003cli\u003eMachine control in food and beverage packaging lines.\u003c\/li\u003e\n\u003cli\u003eSystem status visualization for water and wastewater treatment facilities.\u003c\/li\u003e\n\u003cli\u003eLocal operator control and data logging for PLC-based automation systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e2711-B5A3L3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Size\u003c\/td\u003e\n\u003ctd\u003e5.5 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003eMonochrome LCD (Blue Mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Method\u003c\/td\u003e\n\u003ctd\u003eKeypad and Touchscreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eDH-485 and RS-232\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory\u003c\/td\u003e\n\u003ctd\u003e170 KB runtime \/ 240 KB non-volatile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eNEMA 12\/13, 4X (Indoor), IP54\/IP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Rating\u003c\/td\u003e\n\u003ctd\u003e2 g at 2000 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the terminal is mounted in a panel or enclosure that meets NEMA 4X\/12\/13 or IP65 requirements to maintain environmental protection.\u003c\/li\u003e\n\u003cli\u003eVerify that the power supply is a stable 24 VDC source before connection.\u003c\/li\u003e\n\u003cli\u003eUse shielded communication cables for the DH-485 network to minimize EMI interference in high-noise environments.\u003c\/li\u003e\n\u003cli\u003eAlways power down the system before inserting or removing the ATA memory card or performing maintenance.\u003c\/li\u003e\n\u003cli\u003eEnsure adequate ventilation around the unit to maintain operating temperatures within the 0 to 55 deg C range.\u003c\/li\u003e\n\u003cli\u003eHandle with care to avoid damage to the touchscreen overlay; use only appropriate tools or finger-touch for operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eIs this unit still in production?\u003c\/h3\u003e\u003cp\u003eNo, the 2711-B5A3L3 is classified as a discontinued or obsolete product by the manufacturer. We provide these units as refurbished or surplus stock to support legacy systems.\u003c\/p\u003e\u003ch3\u003eWhat is the primary communication protocol used?\u003c\/h3\u003e\u003cp\u003eThis terminal utilizes the DH-485 proprietary network protocol for communication with Allen-Bradley SLC 500 and MicroLogix controllers.\u003c\/p\u003e\u003ch3\u003eCan I replace the backlight?\u003c\/h3\u003e\u003cp\u003eYes, the backlight is replaceable. The compatible replacement module is the 2711-NL1.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50953180741884,"sku":"2711-B5A3L3","price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_34b79521-8ea7-4389-96e0-fcacb16daa58.jpg?v=1786234929","url":"https:\/\/www.electronicplc.com\/ar\/products\/allen-bradley-2711-b5a3l3-panelview-550-operator-interface-terminal","provider":"Electronic PLC","version":"1.0","type":"link"}