{"product_id":"beckhoff-ks3228-ks-series-8-channel-analog-input-bus-terminal","title":"Beckhoff KS3228 KS Series 8-Channel Analog Input Bus Terminal","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAcquisition of high-density temperature data in space-restricted control cabinets is streamlined using the \u003cstrong\u003eBeckhoff KS3228\u003c\/strong\u003e Bus Terminal. This module interfaces directly with \u003cstrong\u003ePt1000\u003c\/strong\u003e and \u003cstrong\u003eNi1000\u003c\/strong\u003e RTD resistance sensors across \u003cstrong\u003e8 distinct channels\u003c\/strong\u003e, processing field temperatures with high operational efficiency. Designed with \u003cstrong\u003e1-wire connection technology\u003c\/strong\u003e, the hardware optimizes terminal density by utilizing a single signal wire per sensor, referencing a common return path. The integrated \u003cstrong\u003epluggable wiring level\u003c\/strong\u003e permits fast, tool-free terminal replacement during commissioning or maintenance cycles, leaving field wiring fully intact and reducing machine downtime.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eHigh-Density 8-Channel Layout:\u003c\/strong\u003e Monitors up to 8 independent RTD sensors within a single, ultra-slim 12 mm housing.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003ePluggable Connection Interface:\u003c\/strong\u003e Features a removable wiring tier for rapid hardware hot-swaps without disconnecting active field cables.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eFlexible Sensor Interoperability:\u003c\/strong\u003e Built-in hardware scaling and linearization for both Pt1000 and Ni1000 RTD sensors.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eOpen-Circuit Detection:\u003c\/strong\u003e Automatically flags broken wires and sensor faults in the process image to prevent control loop errors.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eK-Bus Communication:\u003c\/strong\u003e Powered directly via the K-bus backplane, minimizing external auxiliary power requirements.\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: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eMulti-zone thermal control in plastics processing, extrusion, and injection molding machinery.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eAir handling units, building automation systems, and HVAC environmental monitoring.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eServer rack and control cabinet internal temperature safety monitoring systems.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eLow-temperature refrigeration control loops and industrial chiller monitoring.\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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"text-align: left; padding: 10px; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 10px; 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 Automation\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 Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eKS3228\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;\"\u003e8 channels\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eConnection Technology\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1-wire system\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eSensor Types Supported\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePt1000, Ni1000 (RTD)\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\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-50 to +150 degC (both Pt and Ni sensors)\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;\"\u003e0.1 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;\"\u003eConversion Time\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eapproximately 1.0 s\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eTypical Measuring Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.5 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;\"\u003eMeasuring Error\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e+\/- 1 degC (dependent on active field wiring)\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 to 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;\"\u003eCurrent Consumption (K-bus)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e85 mA typical\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: 8 x 16-bit data (optional 8 x 8-bit control\/status)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePluggable Wire Range (Solid)\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;\"\u003ePluggable Wire Range (Stranded)\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;\"\u003ePluggable Wire Range (Flexible)\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;\"\u003eHousing Material\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePolycarbonate\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eEnvironmental Protection\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eIP20 \/ variable mounting position\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\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;\"\u003eStandards \u0026amp; Approvals\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;\"\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;\"\u003e0.075 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 (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e2.0 kg (bulk packaging protected)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"text-align: left; padding: 10px; font-weight: bold;\"\u003eTerminal Pin (KS Level)\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 10px; font-weight: bold;\"\u003eSignal Assignment\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 10px; font-weight: bold;\"\u003eDescription\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;\"\u003e1\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput 1\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRTD Sensor Channel 1 (1-wire)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e2\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput 2\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRTD Sensor Channel 2 (1-wire)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e3\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput 3\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRTD Sensor Channel 3 (1-wire)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e4\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput 4\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRTD Sensor Channel 4 (1-wire)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e5\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput 5\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRTD Sensor Channel 5 (1-wire)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e6\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput 6\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRTD Sensor Channel 6 (1-wire)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e7\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput 7\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRTD Sensor Channel 7 (1-wire)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e8\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput 8\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRTD Sensor Channel 8 (1-wire)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe KS3228 is the direct pluggable equivalent of the standard \u003cstrong\u003eKL3228\u003c\/strong\u003e Bus Terminal. While the KL3228 utilizes permanent tension-clamp connections, the KS3228 features a detachable wiring block. They share identical register mappings, K-bus footprints, and electrical parameters, enabling a direct functional swap in existing K-bus configurations without software or PLC modifications.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eBecause this module utilizes a \u003cstrong\u003e1-wire connection scheme\u003c\/strong\u003e, it does not compensate for the resistance of the lead wires. Designers must keep lead wire runs as short as possible to prevent offset errors; every extra ohm of cable resistance will register as an apparent increase in temperature. When using long cable distances, software offsets must be calibrated inside the controller register configuration to offset systemic wire resistance. If high precision is required over long physical distances, consider switching to 2-wire or 4-wire RTD modules such as the KL3208 series.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eTo ensure stable RTD measurement signals, route sensor lines in shielded cables separated from high-voltage, high-frequency motor cables and AC power distributions. Connect the cable shield to a low-impedance ground bus bar immediately at the enclosure entrance point. When configuring the module, use the KS2000 configuration software or register-based PLC commands to choose between Pt1000 and Ni1000 scaling algorithms and to toggle active process data filter settings.\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; color: #9b2c2c;\"\u003e\n  \u003cstrong\u003eCRITICAL WARNING:\u003c\/strong\u003e De-energize all field power supplies and K-bus systems before inserting, removing, or wiring any Bus Terminal. Failure to isolate power can damage internal K-bus contact fingers and lead to unpredictable field station behavior or hardware failure.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 15px; color: #2d3748;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 24px; height: 24px; border-radius: 50%; display: inline-flex; justify-content: center; align-items: center; margin-right: 15px; font-weight: bold; flex-shrink: 0;\"\u003e1\u003c\/span\u003e\n    \u003cp style=\"margin: 0;\"\u003eMount the existing K-bus bus coupler or terminal block securely to a grounded 35 mm DIN rail (conforming to EN 60715).\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 24px; height: 24px; border-radius: 50%; display: inline-flex; justify-content: center; align-items: center; margin-right: 15px; font-weight: bold; flex-shrink: 0;\"\u003e2\u003c\/span\u003e\n    \u003cp style=\"margin: 0;\"\u003eSlide the KS3228 terminal onto the rail next to the existing unit, aligning the double slot-and-key locking mechanism until it clicks into place.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 24px; height: 24px; border-radius: 50%; display: inline-flex; justify-content: center; align-items: center; margin-right: 15px; font-weight: bold; flex-shrink: 0;\"\u003e3\u003c\/span\u003e\n    \u003cp style=\"margin: 0;\"\u003eFor wiring, insert a standard screwdriver into the spring actuation slot on the pluggable level, feed the stripped wire (9 to 10 mm stripping length) into the connection point, and release the tension clamp.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106523963755,"sku":"KS3228","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/ks3228-3qk1e1mbyrb.png?v=1776245299","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-ks3228-ks-series-8-channel-analog-input-bus-terminal","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}