{"product_id":"beckhoff-kl4022-bus-terminal-2-channel-analog-output-module","title":"Beckhoff KL4022 Bus Terminal 2-Channel Analog Output Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned for integration into standard K-bus networks, the \u003cstrong\u003eBeckhoff KL4022\u003c\/strong\u003e enables high-precision processing of current loop control signals. This terminal converts 12-bit digital values from the automation controller into isolated analog current outputs within the standard \u003cstrong\u003e4 to 20 mA\u003c\/strong\u003e range. Its single-ended topology, compact housing, and low conversion latency make it highly suitable for demanding industrial actuator control, valve positioning, and motor drive setpoint configuration.\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\u003eDual-channel analog output configuration utilizing single-ended common ground architecture.\u003c\/li\u003e\n  \u003cli\u003eRobust 12-bit digital-to-analog conversion delivering dependable loop precision.\u003c\/li\u003e\n  \u003cli\u003eHigh-integrity electrical isolation of 500 V between the internal K-bus and field signals.\u003c\/li\u003e\n  \u003cli\u003eRapid internal conversion sequence with a typical processing time of 1.5 milliseconds.\u003c\/li\u003e\n  \u003cli\u003eEfficient power distribution leveraging integrated 24 V DC power contacts on the backplane.\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\u003eElectro-pneumatic and electro-hydraulic proportional valve positioners.\u003c\/li\u003e\n  \u003cli\u003eFrequency inverter and variable speed drive (VSD) speed references.\u003c\/li\u003e\n  \u003cli\u003eDistributed SCADA and process control instrumentation interfaces.\u003c\/li\u003e\n  \u003cli\u003eIndustrial boiler and heating element loop controller feedback.\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 #e2e8f0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eValue \/ Rating\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: 0.75rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eBeckhoff Automation\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eKL4022\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eSignal Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e4 to 20 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNumber of Channels\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eResolution\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e12-bit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eLoad Impedance\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eLess than 500 Ohm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eConversion Time\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eapprox. 1.5 ms\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOutput Error\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eLess than +\/- 0.1% (relative to full-scale value)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003ePower Supply\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e24 V DC via power contacts (or 15 V DC via KL9515 supply terminal)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eK-Bus Current Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003etyp. 75 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eElectrical Isolation\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\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: 0.75rem; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e-25 to +60 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e-40 to +85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eRelative Humidity\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e95%, non-condensing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eGermany\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eWeight\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eapprox. 80 g\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0.25 kg\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; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #e2e8f0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eTerminal Point\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eSignal Assignment\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; 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: 0.75rem;\"\u003e1\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOUT 1\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAnalog Output Channel 1 (+)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e5\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003e0V (1)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAnalog Output Channel 1 ground (-)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOUT 2\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAnalog Output Channel 2 (+)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e6\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003e0V (2)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAnalog Output Channel 2 ground (-)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e3\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003e+24 V\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003ePower Contact Connection (+24 V DC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e7\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003e0 V\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003ePower Contact Connection (0 V DC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e4\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShield\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eShield contact point (connected to DIN rail)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e8\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShield\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eShield contact point (connected to DIN rail)\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\u003ch4 style=\"color: #1a365d; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe KL4022 utilizes Beckhoff's legacy K-bus backplane communication system. If transitioning to an EtherCAT infrastructure, the direct equivalent is the \u003cstrong\u003eEL4022\u003c\/strong\u003e. Note that EL-series terminals utilize the E-bus and cannot reside on standard KL-series couplers (e.g., BK9000, BK3120) without active E-bus\/K-bus converter couplers.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #1a365d; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eSince the KL4022 is a single-ended terminal sharing a common internal ground loop, noise injected into the 0 V signal reference on one loop can cause cross-talk or offset drift on the secondary channel. For field installations with significant ground potential differences, isolated signal conditioning barriers must be installed between the KL4022 and the end-actuator to prevent loop degradation.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #1a365d; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEnsure that shielding is correctly terminated. Terminal points 4 and 8 are connected to the mounting rail. To guarantee sufficient noise rejection, the standard 35 mm DIN rail must be connected to the central control cabinet ground with low-impedance copper braided strap. Ensure K-bus power contacts are adequately populated with 24 V DC; voltage drops below 18 V DC will cause conversion errors or terminal fault signals within TwinCAT.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0; font-weight: bold;\"\u003eCRITICAL WARNING: ELECTRICAL HAZARD\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0.5rem 0 0 0;\"\u003eIsolate and lock out all power supplies to the system before inserting or removing K-bus components. Modifying the physical configuration or terminal assembly while the power is active can induce voltage spikes, resulting in damage to the internal bus driver circuitry or physical terminal contacts.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0; margin-right: 0.75rem;\"\u003e1\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eMount the terminal onto the 35 mm DIN rail (EN 60715) by sliding the terminal's rear slot onto the rail guide until the locking tab audibly clicks.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0; margin-right: 0.75rem;\"\u003e2\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eAlign the terminal laterally with the adjacent Bus Terminal block to engage the tongue-and-groove joint and establish continuous electrical contact via the side-mounted gold contacts.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0; margin-right: 0.75rem;\"\u003e3\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eInsert field connection cables into the cage-clamp connectors using an appropriate industrial screwdriver. Release the mechanism to secure wire connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0; margin-right: 0.75rem;\"\u003e4\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConnect the analog loop shielding directly to contacts 4 or 8 to guarantee direct path grounding through the DIN rail structure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106570723691,"sku":"KL4022","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/kl4022-yglmxxw0vx2.png?v=1776245166","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-kl4022-bus-terminal-2-channel-analog-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}