{"product_id":"beckhoff-kl4031-1-channel-analog-output-bus-terminal","title":"Beckhoff KL4031 1-Channel Analog Output Bus Terminal","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eKL4031 (KL 4031)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a precision 1-channel analog output terminal designed to generate signals in the range of -10 to +10 V. As a core component of the Beckhoff K-Bus system, this module converts 12 bit digital values from the automation device into an isolated analog control signal. In industrial sectors such as HVAC control, chemical processing, and specialized machinery, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eKL4031\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis vital for driving actuators, proportional valves, and frequency converters that require a bipolar voltage reference. By providing high-accuracy signal generation with an error margin of less than 0.1 percent, this terminal ensures stable process control and minimizes the risk of signal drift, effectively protecting downstream equipment and reducing maintenance requirements.\u003c\/p\u003e\n\u003ch3\u003eTechnical Configuration\u003c\/h3\u003e\n\u003cp\u003eThe KL4031 architecture is characterized by its \"plug-and-play\" integration, requiring no manual address or hardware configuration settings. The module draws its power directly from the K-Bus (typically 75 mA), eliminating the need for additional external power contacts for the internal electronics. It features a robust output stage that is short-circuit proof, capable of driving loads greater than 5 kOhm. Signal integrity is maintained through 500 V electrical isolation between the K-Bus and the output signal, preventing ground loops and protecting the higher-level PLC from field-side electrical surges. The 12 bit resolution provides a granular output scale, allowing for smooth ramps and precise setpoint adjustments in complex motion or temperature control loops.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eKL4031\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBeckhoff\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eNumber of Outputs\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput Signal Range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-10 V to +10 V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eResolution\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12 bit\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eLoad Resistance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026gt; 5 kOhm (short-circuit proof)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput Error\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt; +\/- 0.1 percent (relative to end value)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eConversion Time\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e~ 1.5 ms\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eElectrical Isolation\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e500 V (K-bus \/ signal voltage)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eK-Bus Current Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTyp. 75 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProcess Image Bit Width\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 x 16 bit data (8 bit control\/status optional)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 55 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDimensions (W x H x D)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12 mm x 100 mm x 68 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eApprox. 85 g (2 kg shipping weight)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProtection Rating\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP20\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eApprovals\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCE, UL, ATEX, IECEx, DNV GL\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the KL4031 require separate 24 VDC power through the power contacts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, the KL4031 is powered entirely via the K-Bus. It does not utilize the lateral power contacts, which simplifies wiring in a mixed-module terminal segment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if the output is accidentally shorted to ground?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe KL4031 is designed to be short-circuit proof. The internal circuitry will limit the current to prevent damage to the module, though prolonged short circuits should be avoided to prevent excessive heat buildup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs there a version of this terminal with removable wiring?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the KS4031 variant provides the same technical functionality as the KL4031 but features a pluggable wiring level for faster field replacement and maintenance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShielding for Signal Purity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAnalog voltage signals (-10 V to +10 V) are highly susceptible to electromagnetic interference. Always use shielded cabling for the output signal and terminate the shield at the PE (Protective Earth) bar in the control cabinet to ensure a low-impedance path for noise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLoad Impedance Matching:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure the connected actuator or receiver has an input impedance of at least 5 kOhm. Connecting a load with lower impedance will result in voltage drops and potential inaccuracies in the output signal relative to the PLC setpoint.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHazardous Area Compliance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor ATEX\/IECEx applications (Ex nA IIC T4 Gc), the module must be installed in an enclosure providing at least IP54 protection. Ensure that the module is not plugged or unplugged while the power is active in potentially explosive atmospheres.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106633769323,"sku":"KL4031","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/kl4031-n5i5qsznage.png?v=1776245167","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-kl4031-1-channel-analog-output-bus-terminal","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}