Description
1. Product Overview
Allen‑Bradley 2711‑K5A16 is a compact industrial keypad‑operated monochrome Human‑Machine Interface (HMI) within Rockwell Automation PanelView 550 series. Equipped with a 5.3‑inch industrial monochrome LCD display and full‑membrane physical keypad architecture, it is purpose‑built for small‑and‑medium‑sized automated equipment, confined on‑site cabinets, high‑frequency operation, and harsh industrial environments with heavy dust and high humidity. Free of touch‑screen vulnerabilities such as fragility, drift caused by oil contamination and static‑electricity mis‑operation, it features high durability, strong anti‑interference performance and outstanding stability of mechanical keypads. It acts as a core lightweight human‑machine interaction terminal for small complete sets of industrial control equipment, stand‑alone automation units and upgrading‑replacement of legacy compact Allen‑Bradley automatic‑control systems.
The 2711‑K5A16 adopts classic monochrome high‑definition display with 256×128 pixel resolution, delivering sharp characters and distinct hierarchy for excellent readability under strong workshop light and reflective conditions. Natively fitted with RS‑232 (DF1) industrial serial port and dedicated printer port, it provides full compatibility with classic Rockwell Automation PLC families including MicroLogix, SLC500 and PLC‑5, featuring seamless protocol matching and stable communication with low packet‑loss rate. It adopts industrial wide‑range AC power supply, fully‑enclosed triple‑proof housing and embedded maintenance‑free firmware system, free of system crash or virus‑induced stalling, supporting 7×24‑hour non‑stop continuous operation. Thanks to its compact footprint, high reliability and cost‑effective drop‑in replacement capability, it is widely deployed in stand‑alone mechanical equipment, light‑industry automation, small‑scale water treatment, rubber‑plastic auxiliary machinery and assembly‑line stand‑alone control. It serves as a preferred option for low‑cost technical retrofit of small‑scale industrial points, replacement of legacy compact HMIs and simple on‑site operation & control.
2. Functional Features
Pure‑Keypad Industrial Architecture for Zero‑Mis‑Operation under High‑Intensity Confined‑Space Conditions
Constructed with industrial fully‑sealed membrane physical keypads without any touch‑screen components, it fundamentally eliminates common hardware‑level failures including touch malfunction, screen cracking, water‑caused damage, oil‑film obstruction and aging‑related drift. Subjected to millions‑of‑times industrial durability test, the keypads deliver uniform travel and distinct tactile feedback with anti‑jamming and anti‑mis‑operation performance. It withstands long‑term high‑frequency operation inside compact cabinets, continuous minor equipment vibration, dust‑oil erosion and humid‑condensation environments. It achieves extremely low failure rate during 24‑hour continuous production, exhibiting remarkable advantages in industrial durability and field adaptability compared with same‑size touch‑screen HMIs.
5.3‑Inch High‑Definition Monochrome Large‑Screen for Clear Readability under Strong‑Light Conditions
Featuring a dedicated 5.3‑inch industrial monochrome LCD screen at 256×128 pixel resolution, it renders delicate characters and distinct image hierarchy, capable of simultaneous presentation of multiple process parameters, equipment operating status, fault alarm messages and simple process trends. Adopting industrial high‑contrast display technology and long‑life low‑power LED backlight module, it delivers superior anti‑glare and anti‑strong‑light performance. Images remain sharp without whitening or blurring under direct workshop natural‑light exposure, cabinet‑internal reflection and dim machine‑room conditions. Flicker‑free and aging‑resistant backlight maintains constant brightness over service life, fully meeting round‑the‑clock visual‑monitoring requirements of small‑and‑medium‑sized equipment.
Dual‑Interface of RS‑232 plus Printer Port for Precise Compatibility with Legacy Allen‑Bradley Systems
Equipped with dedicated RS‑232 (DF1) industrial communication serial port and independent printer interface, DF1 is the native protocol for classic Allen‑Bradley industrial controls. Without protocol‑converter modules or external networking devices, it achieves 100 % compatibility with classic PLC control systems including MicroLogix, SLC500 and PLC‑5. The RS‑232 serial port reliably performs real‑time PLC data acquisition, process‑parameter download, equipment start‑stop interlock, fault‑signal upload, project upload/download and parameter commissioning. The dedicated printer port supports real‑time output of on‑site data reports, fault logs and production records, satisfying data retention and traceability requirements for small‑scale equipment. The communication link features electromagnetic‑interference immunity, low latency, zero‑data‑jitter and stable connection.
Solid‑State Embedded Firmware System for Year‑Round Maintenance‑Free Stable Operation
Built upon industrial‑grade dedicated embedded firmware without Windows open‑source operating system, it avoids system vulnerabilities, virus intrusion risk and background stalling or crashing. Upon power‑on, configuration projects launch automatically within seconds. Process parameters, screen configurations, fault logs and equipment operating data are automatically saved upon power loss without permanent data loss or program corruption. With minimal resource occupancy, fast response and no redundant background processes, it supports 7×24‑hour year‑round non‑stop continuous operation without periodic restart‑and‑calibration or system maintenance. It effectively addresses typical pain‑points of conventional compact industrial terminals such as freezing, abort, parameter drift and virus infection.
Light‑Weight Full‑Function Configuration for Flexible Adaptation to Small‑Scale Processes
Supported by dedicated PanelBuilder32 configuration software for light‑weight control logic of small‑scale equipment, it delivers comprehensive practical HMI functions: monochrome screen editing, process‑parameter setting, multi‑level access management, basic fault alarming, real‑time status monitoring, event‑log traceback and basic recipe management. Screen layout and keypad functions can be freely customized according to process workflow and operation specifications of stand‑alone equipment. It adapts to small‑and‑medium‑industrial scenarios such as equipment start‑stop control, fine‑tuning of process parameters, fault reset, status review and simple data statistics, flexibly matching control logic for various stand‑alone automated units and small complete sets of equipment.
Compact Fully‑Enclosed Triple‑Proof Housing for Excellent Tolerance in Confined‑Space Environments
Constructed with high‑strength compact flame‑retardant industrial enclosure, the fully‑sealed structure provides dust‑proof, moisture‑proof, oil‑resistant and mild‑splash‑proof performance. The front panel conforms to NEMA 12/13 and IP65 industrial protection standards, suitable for enclosed installation inside compact control cabinets. Internal circuit boards are conformal‑coated for moisture resistance, corrosion resistance and dust prevention. Validated by strict industrial vibration‑shock, temperature‑humidity cycling and EMC tests, it withstands long‑term harsh conditions including dust accumulation, moisture condensation, light oil contamination, sustained equipment vibration and mixed strong‑weak‑electric interference. The enclosure resists deformation and circuits resist aging, achieving far superior long‑term stability than ordinary commercial compact HMIs.
Industrial Wide‑Range AC Power Supply with Excellent Grid‑Fluctuation Adaptability
Designed for industrial wide‑range AC power input of 100‑240 V AC, 50/60 Hz full‑range adaptive. It perfectly adapts to complex domestic industrial 220 V power‑supply conditions featuring grid fluctuation, transient surge and power‑supply noise. Integrated multi‑level electrical protection covers over‑voltage, over‑current, short‑circuit, reverse polarity, surge and static electricity. It effectively prevents equipment black‑screen, unexpected reboot, program abort, data loss and communication disconnection induced by on‑site power‑supply anomalies, ensuring long‑term continuous stable operation of key small‑and‑medium‑sized equipment.
Standard Compact Embedded Mounting for Non‑Destructive Replacement of Legacy Equipment
Adopting industry‑standard embedded panel‑mounting structure, the compact thin‑body design occupies minimal cabinet space and fits standard cut‑outs of small‑and‑medium‑sized control cabinets, equipment panels and stand‑alone operating consoles, delivering tight fitting, reliable sealing and good dust‑proof performance. Physical dimensions, wiring definitions, communication interfaces and mounting holes are fully compatible with peer models in PanelView 550 series. It enables direct drop‑in replacement of legacy compact HMIs suffering from screen aging, keypad failure, communication anomaly and frequent malfunctions. No cabinet modification, configuration reconstruction or PLC‑program revision is required, greatly shortening retrofit downtime and cutting maintenance‑and‑retrofit costs for small‑scale equipment.
3. Technical Specifications
3.1 Basic Specifications
Model: 2711‑K5A16; Manufacturer: Allen‑Bradley (Rockwell Automation); Series: PanelView 550 Compact Industrial HMI; Type: 5.3‑inch keypad‑operated monochrome industrial HMI; Operation Mode: full industrial membrane physical keypad (non‑touch); Display: industrial‑grade monochrome LCD; Configuration Software: PanelBuilder32; Core Positioning: visualization monitoring and operation terminal for small‑and‑medium‑sized automated stand‑alone units and small complete sets of equipment; Key Features: 5.3‑inch high‑definition monochrome display, high‑durability pure keypad, dual‑interfaces of RS‑232 plus printer port, wide‑range AC power supply, compact footprint, maintenance‑free firmware system, non‑destructive replacement for legacy Allen‑Bradley systems.
3.2 Display and Operation Parameters
Screen Size: 5.3‑inch industrial monochrome LCD; Resolution: 256×128 pixels; Display Mode: high‑contrast monochrome high‑definition display for simultaneous multi‑parameter & multi‑status presentation; Backlight: long‑life industrial LED backlight, low power consumption, flicker‑free, anti‑aging, constant brightness; Operating Keys: industrial dust‑proof, water‑proof and wear‑resistant membrane keys including navigation keys and programmable function keys; Operation Logic: supports screen switching, fine‑tuning of parameters, equipment start‑stop, fault reset and multi‑level access‑right operation; Display Performance: sunlight readable, anti‑glare, wide viewing angle for round‑the‑clock clear visibility under confined‑cabinet and complex‑lighting conditions.
3.3 Storage and Operation Parameters
System Architecture: pure firmware‑based embedded solid‑state system without general‑purpose OS; Project Storage: supports configuration projects for small‑and‑medium‑scale applications, storing monochrome screens, alarm logs, basic recipes and status data; Data Preservation: automatic saving of parameters, project and operating logs upon power loss; no data or program corruption after long‑term power‑off; Operation Performance: auto‑run after power‑on, fast boot‑up, 7×24‑hour continuous operation free of freeze‑up, stalling or abort; System Advantages: virus‑free, vulnerability‑free, zero‑maintenance, no mandatory periodic restart‑and‑calibration.
3.4 Communication and Interface Parameters
Communication Interface: RS‑232 industrial serial port (DF1 protocol); Expansion Interface: dedicated printer port; Supported Protocols: native Allen‑Bradley DF1 protocol, compatible with classic PLC families MicroLogix, SLC500 and PLC‑5; Communication Performance: low latency, high stability, electromagnetic‑interference resistance, free of data jitter and disconnection; Supported Functions: real‑time PLC data interaction, equipment interlock control, fault‑signal upload, project upload/download, on‑site data printing; Networking Mode: point‑to‑point stable communication for small‑and‑medium‑sized stand‑alone automatic‑control systems.
3.5 Electrical Specifications
Power Supply: industrial wide‑range AC power input; Voltage Range: 100 V‑240 V AC, 50/60 Hz adaptive; Max. Power Consumption: 45 VA; Electrical Protection: integrated multi‑layer protection for over‑voltage, over‑current, short‑circuit, reverse polarity, surge and static electricity; Power‑Consumption Design: industrial low‑power design with low heat generation free of thermal aging; Power‑Supply Compatibility: tolerates industrial‑grid fluctuation, power‑supply noise and transient voltage surge to avoid unexpected reboot and operational faults.
3.6 Environmental & Mechanical Parameters
Operating Temperature: 0 ℃ ~ +55 ℃ standard industrial operating temperature; Storage Temperature: -20 ℃ ~ +70 ℃; Humidity: 5 %‑95 % non‑condensing; Front‑Panel Protection: NEMA 12/13, IP65 dust‑proof, water‑resistant and oil‑resistant; Vibration Resistance: withstands sustained minor equipment vibration and transient mechanical shock during unit start‑stop; Mounting: standard embedded panel mounting; Operation Profile: round‑the‑clock non‑stop operation, good condition adaptability, high stability and extremely low failure rate.
4. Hardware Configuration & Structural Advantages
Compact Pure‑Keypad Architecture for Installation inside Confined Cabinets
Adopting lightweight compact design dedicated for small control cabinets, equipment panels and confined machine‑room spaces without occupying extra installation space. The pure‑physical‑keypad hardware excludes fragile touch‑screen components, fundamentally eliminating common on‑site failures of touch‑screens such as oil‑caused malfunction, static‑electricity mis‑operation, shattering and drift. With millions‑time actuation durability, it delivers wear‑resistance, oil‑resistance, anti‑jamming and anti‑mis‑operation performance. It perfectly adapts to high‑frequency and long‑duration continuous‑operation conditions of small‑and‑medium‑sized equipment and achieves superior field durability compared with same‑size touch‑screen HMIs.
High‑Resolution Monochrome Display for Accurate and Clear Monitoring of Small‑Scale Processes
Equipped with 256×128‑pixel industrial monochrome LCD, it renders finer characters and richer interface contents than ordinary compact monochrome screens, capable of simultaneous display of multiple groups of process parameters, equipment operating status, fault codes and alarm messages. High‑contrast display offsets interference from strong workshop light and light reflection for fatigue‑free long‑time observation. The long‑life backlight module delivers stable service life without frequent maintenance‑and‑replacement, greatly cutting daily maintenance costs for small‑scale equipment.
Native DF1‑Protocol Communication for Seamless Connection to Legacy Compact Allen‑Bradley Systems
Embedded with native Allen‑Bradley DF1 communication protocol, it achieves plug‑and‑play compatibility with classic compact PLC systems such as MicroLogix and SLC500 without extra configuration or converter modules. Precise protocol‑timing matching eliminates risks of communication incompatibility, data jitter and frequent disconnection. Combined with the dedicated printer port, it supports both equipment monitoring and on‑site data print‑out for data traceability and production‑record keeping of small assembly lines and stand‑alone equipment, delivering comprehensive practical functions.
Zero‑Maintenance Solid‑State Firmware System for Stable Continuous Production
Free of open‑source operating system, it runs on pure firmware with clean non‑redundant architecture, no vulnerabilities and no virus‑intrusion risk. It eliminates root‑causes of conventional HMI faults including stalling, freezing, virus infection and system crash. Configuration projects are automatically loaded upon power‑on, and process parameters & operating logs are permanently preserved after power loss. 7×24‑hour year‑round continuous production requires no manual restart or system servicing. It is well‑suited for unattended continuous‑production scenarios in light‑industry, machinery and environmental‑protection sectors with minimum maintenance workload.
IP65‑Rated Triple‑Proof Enclosure for Optimal Adaptation to Complex Small‑Scale Operating Conditions
High‑strength flame‑retardant fully‑enclosed housing together with conformal‑coated circuit boards realizes front‑panel IP65 dust‑proof, water‑resistant and oil‑resistant performance. It effectively counteracts dust accumulation, moisture condensation, light oil contamination and temperature cycling inside compact cabinets. Validated by OEM aging, vibration, temperature‑humidity cycling and EMC tests, it exhibits excellent anti‑aging, vibration‑resistance and anti‑interference capability for long‑term stable operation under complex conditions of various small‑and‑medium‑sized automated equipment.
Wide‑Range AC Power Supply plus Standardized Structure for High Cost‑Effectiveness in Small‑Scale Technical Retrofit
100‑240 V AC ultra‑wide‑voltage input perfectly adapts to unstable and frequently fluctuating domestic industrial power grids, preventing equipment reboot and data corruption caused by voltage anomalies. Cut‑out dimensions, wiring terminals, interface definitions and program architecture are fully compatible with PanelView 550 series. Faulty legacy compact HMIs can be directly drop‑in replaced without cabinet modification, program revision or re‑networking. It represents the optimal solution for low‑cost upgrading of legacy small‑and‑medium‑sized Allen‑Bradley automatic‑control systems.
5. Application Scenarios
Stand‑Alone Automated Mechanical Equipment: Widely used in packaging machinery, printing equipment, textile auxiliary machinery, compact rubber‑plastic extruders, conveyor units and small machine‑tool controls. Acting as on‑site operation terminals, it realizes equipment start‑stop, fine‑tuning of process parameters, condition monitoring as well as fault review and reset.
Small‑Scale Water‑Treatment and Environmental‑Protection Equipment: Suitable for compact water‑purification units, simple sewage treatment, auxiliary circulating‑water control and small chemical‑dosing systems. It performs pump‑valve status monitoring and process‑parameter adjustment with on‑site operation capability, adapting to complex machine‑room conditions featuring confined space, high humidity and heavy dust.
Small‑Scale Automated Equipment for Light‑Industry, Food and Daily‑Chemical Sectors: Leveraging its dust‑proof, moisture‑proof, low‑failure‑rate and compact‑durable characteristics, it fits small‑scale automated equipment for light‑industry, food and daily‑chemical production, satisfying production‑control requirements for clean manufacturing, continuous operation and low maintenance cost.
- Auxiliary Operation Terminals for Assembly‑Lines: Deployed for independent on‑site operation and status monitoring of auxiliary stand‑alone units and branch‑line equipment of large production lines. Featuring small footprint and flexible installation, it can be distributed at various line points to realize segmented‑process control and rapid fault troubleshooting.
