{"product_id":"beckhoff-ks3222-bus-terminal-2-channel-analog-input","title":"KS3222 | BECKHOFF | Terminal de bus","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAcquisition of high-precision temperature measurements in industrial automation environments is handled directly by the \u003cstrong\u003eBeckhoff KS3222\u003c\/strong\u003e, a 2-channel analog input terminal designed for resistive sensors. The \u003cstrong\u003eBeckhoff KS3222\u003c\/strong\u003e enables direct connection of resistance thermometers, including Pt100, Pt1000, Ni100, and Ni1000 sensors, utilizing a highly stable \u003cstrong\u003e4-wire connection technology\u003c\/strong\u003e to eliminate errors from line resistance. This terminal features pluggable wiring levels, making it highly serviceable for modular control cabinets using the Beckhoff K-bus system. Featuring built-in open-circuit recognition and a dedicated 50 Hz filter, this module ensures reliable signal integrity and high-resolution temperature conversion in harsh industrial environments.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Channel Input:\u003c\/strong\u003e Supports two independent RTD or resistance measurement sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePluggable Wiring Level:\u003c\/strong\u003e The KS series housing allows pre-wired terminal blocks to be plugged or unplugged easily for rapid commissioning and maintenance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-Wire Connection Technology:\u003c\/strong\u003e Minimizes line resistance measurement errors for elevated precision over long cable runs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Sensor Compatibility:\u003c\/strong\u003e Direct integration of Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, KTY, and potentiometer measurements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Digitization:\u003c\/strong\u003e Provides a 0.01 degC resolution per digit with a fast typical conversion time of 50 ms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRobust Electrical Isolation:\u003c\/strong\u003e Delivers 500 V electrical isolation between the K-bus and the signal channels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHazardous Location Certified:\u003c\/strong\u003e ATEX Zone 2 Ex marking (II 3 G Ex nA IIC T4 Gc) for explosive environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Temperature Control:\u003c\/strong\u003e Heat treatment, plastics processing, and industrial furnace monitoring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProcess Engineering:\u003c\/strong\u003e Chemical processing plants requiring ATEX-certified temperature acquisition.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHVAC and Climate Automation:\u003c\/strong\u003e Environmental monitoring in data centers and storage facilities.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMechanical Engineering:\u003c\/strong\u003e Integrated temperature sensing for motor windings, bearings, and hydraulic systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eSpecification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eBeckhoff\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eModel\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eKS3222\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eNumber of Inputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eTechnology \/ Connection\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e4-wire connection\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePower Supply\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eVia the K-bus\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eK-Bus Current Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eTypical 60 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCompatible Sensors\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, KTY, Resistance (10 Ohm to 1.2\/5 kOhm)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eMeasuring Range (Pt)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-200 to +850 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eMeasuring Range (Ni)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-60 to +250 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eConversion Time\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eTypical 50 ms\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eMeasuring Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eTypical 0.5 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eResolution\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.01 degC per digit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eMeasuring Error\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.1 degC at 40 degC ambient temperature (4-wire, Pt100, 50 Hz filter)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eElectrical Isolation\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e500 V (K-bus \/ signal voltage)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eProcess Image Bit Width\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput: 2 x 16-bit data (2 x 8-bit control\/status optional)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eDiagnostics\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eOpen-circuit \/ wire-break recognition\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0 to +55 degC (no condensation, 95% relative humidity)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-25 to +85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eProtection Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eIP20\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eApprovals\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eCE, UL, ATEX (II 3 G Ex nA IIC T4 Gc)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eHousing Material\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePolycarbonate, DIN rail mount (35 mm, EN 60715)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eDimensions (W x H x D)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e12 mm x 100 mm x 68 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eNet Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.07 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eShipping Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e2.00 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eWiring Connection Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eConnection Method\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003ePluggable Tension Clamp (Spring Actuation via Screwdriver)\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eSolid Wire Cross-Section\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.08 to 1.5 mm² (AWG 28 to 16)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eStranded Wire Cross-Section\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.08 to 1.5 mm² (AWG 28 to 16)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eFine-Stranded Wire Cross-Section\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.14 to 1.5 mm² (AWG 26 to 16)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eStripping Length\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e9 to 10 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eMax. Power Contact Current Load\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e10 A\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe KS3222 is functionally identical to the standard Beckhoff \u003cstrong\u003eKL3222\u003c\/strong\u003e. The key structural difference lies in the connection interface: the KS3222 features a \u003cstrong\u003epluggable wiring level\u003c\/strong\u003e, allowing the terminal block connector to be removed while retaining field wiring. This minimizes downtime during physical module replacement. This terminal requires a standard K-bus backplane and can be integrated seamlessly with any Beckhoff BK-series or BC-series Bus Couplers without modifying PLC code or TwinCAT configurations.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eTo ensure high-precision readings down to 0.01 degC, the measuring current is kept at a low typical rate of 0.5 mA. This design constraint is essential to minimize the \u003cstrong\u003eself-heating\u003c\/strong\u003e of small-mass RTD sensors (such as Pt100) within the medium. However, because the measuring current is low, the signal path is more susceptible to high-frequency electromagnetic interference. When routing RTD wiring through the same cable tray as variable frequency drives (VFDs) or heavy inductive loads, you must utilize shielded twisted pair (STP) cables to avoid signal degradation.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen configuring the KS3222 under TwinCAT (2.x or 3.x), the sensor type must be matched to the register settings of the terminal. The factory default setting is optimized for \u003cstrong\u003ePt100 sensors\u003c\/strong\u003e. If you are using Ni100 or potentiometer modes, ensure you execute the configuration via register communication (e.g., using KS2000 software or PLC blocks) before putting the loop into auto-control. For 4-wire configuration, ensure all four pins are properly jumpered directly at the RTD sensor element rather than at the control cabinet terminal block to compensate fully for lead wire resistance.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 15px; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 5px;\"\u003eCRITICAL WARNING\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003eBefore installing, removing, or wiring any Bus Terminal, isolate the primary power supply of both the field device and the Bus Coupler. Failure to completely de-energize the assembly can cause unexpected diagnostic faults on the K-bus backplane or damage the delicate internal electronic components of adjacent terminals.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 15px;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003e\n      \u003cstrong\u003eDIN Rail Alignment:\u003c\/strong\u003e Position the KS3222 onto the 35 mm DIN rail (EN 60715). Slide the unit along the rail until the tongue-and-groove side guides lock securely into the neighboring terminal.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003e\n      \u003cstrong\u003eMechanical Lock:\u003c\/strong\u003e Push the terminal assembly firmly toward the DIN rail until you hear the mounting release lock latch engage. Verify mechanical stability.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003e\n      \u003cstrong\u003ePluggable Wiring Block:\u003c\/strong\u003e Insert the pre-wired KS plug block into the housing interface, ensuring physical alignment before pressing it home. Secure the wires using the spring tension clamps with a standard flat-head screwdriver.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold;\"\u003e4\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003e\n      \u003cstrong\u003eShield Grounding:\u003c\/strong\u003e Terminate the sensor cable shields to a dedicated low-impedance ground rail positioned close to the entry point of the control panel to minimize EM noise.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106518950251,"sku":"KS3222","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/ks3222-xilr2gjcr5t.png?v=1776245297","url":"https:\/\/www.plcprotech.com\/fr\/products\/beckhoff-ks3222-bus-terminal-2-channel-analog-input","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}