{"product_id":"beckhoff-kl4438-bus-terminal","title":"BECKHOFF KL4438 Bus Terminal","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBECKHOFF KL4438\u003c\/strong\u003e is an 8-channel analog output terminal designed for the modular K-bus I\/O system. It converts digital 16-bit values from the controller into physical voltage signals ranging from -10 V to +10 V. The terminal incorporates single-ended signal technology with a common ground connection, optimizing space to provide eight separate outputs within a standard 12 mm housing width.\u003c\/p\u003e\n\n\u003cp\u003eOperating as an interface between the automation network and variable-voltage field actuators, the \u003cstrong\u003eBECKHOFF KL4438\u003c\/strong\u003e provides high-density analog control. The electronic circuitry is electrically isolated from the system bus to protect control components from voltage transients and field-side electrical interference. Active channel status and diagnostics are managed via the bus coupler to ensure reliable integration into the control environment.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eEight analog output channels integrated into a compact 12 mm housing\u003c\/li\u003e\n  \u003cli\u003eSignal range of -10 V to +10 V with 12-bit conversion resolution\u003c\/li\u003e\n  \u003cli\u003eSingle-ended output configuration utilizing a common ground terminal point\u003c\/li\u003e\n  \u003cli\u003eShort-circuit proof analog outputs with load protection\u003c\/li\u003e\n  \u003cli\u003eElectrical isolation of 500 V between the K-bus and the output signal lines\u003c\/li\u003e\n  \u003cli\u003eAutomatic addressing and system configuration with no manual switch settings required\u003c\/li\u003e\n  \u003cli\u003eCompact DIN rail mounting with spring-loaded connection terminals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVoltage-based setpoint control for frequency converters and servo drives\u003c\/li\u003e\n  \u003cli\u003eControl of proportional valves and physical positioning systems\u003c\/li\u003e\n  \u003cli\u003eAnalog input control on legacy variable-speed machinery\u003c\/li\u003e\n  \u003cli\u003eIntegration in multi-point testing systems requiring adjustable reference signals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eManufacturer\u003c\/td\u003e\n      \u003ctd\u003eBECKHOFF\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eExact Model\u003c\/td\u003e\n      \u003ctd\u003eKL4438\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Type\u003c\/td\u003e\n      \u003ctd\u003eBus Terminal (Analog Output)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNumber of Channels\u003c\/td\u003e\n      \u003ctd\u003e8\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSignal Voltage Range\u003c\/td\u003e\n      \u003ctd\u003e-10 V to +10 V\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSignal Technology\u003c\/td\u003e\n      \u003ctd\u003eSingle-ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eResolution\u003c\/td\u003e\n      \u003ctd\u003e12 bit\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLoad Resistance\u003c\/td\u003e\n      \u003ctd\u003e\u0026gt; 5 kOhm (short-circuit proof)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConversion Time\u003c\/td\u003e\n      \u003ctd\u003eapprox. 8 ms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOutput Error\u003c\/td\u003e\n      \u003ctd\u003e\u0026lt; +\/-0.2% (relative to full scale)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eK-Bus Current Consumption\u003c\/td\u003e\n      \u003ctd\u003etyp. 20 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Contact Current\u003c\/td\u003e\n      \u003ctd\u003eLoad only\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eElectrical Isolation\u003c\/td\u003e\n      \u003ctd\u003e500 V (K-bus to signal voltage)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProcess Image Bit Width\u003c\/td\u003e\n      \u003ctd\u003e8 x 16 bit data output (optional 8 x 8 bit control\/status)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHousing Width\u003c\/td\u003e\n      \u003ctd\u003e12 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Temperature Range\u003c\/td\u003e\n      \u003ctd\u003e0 to +55 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStorage Temperature Range\u003c\/td\u003e\n      \u003ctd\u003e-25 to +85 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRelative Humidity\u003c\/td\u003e\n      \u003ctd\u003e95%, non-condensing\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProtection Class\u003c\/td\u003e\n      \u003ctd\u003eIP20\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eEnsure the entire industrial control cabinet is completely de-energized before mounting, removing, or wiring any module.\u003c\/li\u003e\n  \u003cli\u003eInspect the \u003cstrong\u003eBECKHOFF KL4438\u003c\/strong\u003e housing and contact pins for physical integrity prior to mounting.\u003c\/li\u003e\n  \u003cli\u003eSnap the terminal securely onto a standard 35 mm DIN rail (EN 60715) alongside the system bus coupler and other compatible terminals.\u003c\/li\u003e\n  \u003cli\u003eVerify that the K-bus contact surfaces engage fully with the adjacent modules to establish continuous communication and power.\u003c\/li\u003e\n  \u003cli\u003eConnect the signal outputs and reference ground potentials to the terminal points using solid wire or ferruled flexible conductors.\u003c\/li\u003e\n  \u003cli\u003ePower the system and use the twin control system configuration interface to scan, address, and verify the I\/O signal mappings.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106489131371,"sku":"KL4438","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/kl4438-3yhaecnjz41.png?v=1776245178","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-kl4438-bus-terminal","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}