{"product_id":"ah04tc-5a-delta-ah-series-4-channel-thermocouple-input-unit","title":"AH04TC-5A DELTA AH Series 4-Channel Thermocouple Input Unit","description":"\u003ch3\u003eOverview \u0026amp; Engineering Architecture\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eAH04TC-5A\u003c\/strong\u003e\u003c\/span\u003e is an advanced 4-channel temperature measurement module engineered for industrial thermal acquisition tasks. Designed for the DELTA AH series controller platform, this unit delivers high-precision thermocouple conversion with robust signal isolation. Panel builders and maintenance engineers rely on its modular architecture to manage complex thermal loops across multi-zone heating and cooling infrastructures.\u003c\/p\u003e\n\u003ch3\u003eCore Technical Parameters\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTechnical Parameter\u003c\/th\u003e\n\u003cth\u003eOperational Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDELTA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel \u0026amp; Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eAH04TC-5A\u003c\/strong\u003e\u003c\/span\u003e (AH Series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTemperature Measurement Module \/ Thermocouple Input Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 independent channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupported Signals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThermocouple types J, K, R, S, T, E, N, and ±150 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 °C \/ 0.1 °F (16-bit effective resolution)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConversion Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 ms per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.6% of Full Scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJIS removable terminal block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5W internal logic power consumption\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhysical Spec\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShipping weight 2 kg with rugged industrial housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eOperational Capabilities \u0026amp; System Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot-Swapping Support:\u003c\/strong\u003e Replace modules on active subracks without powering down the entire control rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Isolation:\u003c\/strong\u003e Optically isolated design protects internal backplane logic from ground loops and electrical noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in PID Loops:\u003c\/strong\u003e Executes local temperature control loops directly on the module firmware to reduce CPU overhead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupt \u0026amp; Diagnostic Functions:\u003c\/strong\u003e Triggers PLC interrupts upon threshold violations and runs real-time hardware status checks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnection Detection:\u003c\/strong\u003e Automatically flags open-circuit thermocouple wiring to prevent silent control failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Feedback:\u003c\/strong\u003e Multi-color module status LED indicators offer immediate on-site health verification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatible Hardware \u0026amp; Deployment Environments\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Racks:\u003c\/strong\u003e Integrates seamlessly with DELTA AH series modular backplanes and high-speed CPU racks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Furnaces:\u003c\/strong\u003e Manages multi-zone heat-treating ovens requiring precise thermocouple tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Reactors:\u003c\/strong\u003e Provides safe, isolated thermal sensing in explosive or noise-heavy chemical processing yards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging Machinery:\u003c\/strong\u003e Controls sealing bar temperatures with rapid 200ms channel conversion updates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostics \u0026amp; Fault-Finding Protocols\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen-Sensor Flags:\u003c\/strong\u003e Fault registers instantly latch onto broken probe wires, alerting control software before thermal runaway occurs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Troubleshooting:\u003c\/strong\u003e Blinking status lights correspond directly to internal error codes detailed in DELTA engineering manuals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Range Monitoring:\u003c\/strong\u003e Input channels track ±150mV variances to catch creeping sensor calibration drifts early.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal Logistics \u0026amp; Warranty Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch Window:\u003c\/strong\u003e Guaranteed 24 to 48-hour order fulfillment and dispatch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Carriers:\u003c\/strong\u003e Shipped safely worldwide via trusted couriers including FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Protection:\u003c\/strong\u003e Backed by a comprehensive 12-month operational replacement warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight \u0026amp; Field Experience\u003c\/h3\u003e\n\u003cp\u003eDeploying thermal modules in high-voltage environments often exposes control systems to electromagnetic interference. During a recent commissioning of a continuous annealing line, retrofitting standard acquisition cards with the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eAH04TC-5A\u003c\/strong\u003e\u003c\/span\u003e successfully eliminated erratic temperature spikes due to its isolated signal architecture. Field technicians should always verify proper grounding of thermocouple shield drains to the DIN rail ground lug to maintain the ±0.6% full-scale accuracy over long cable runs.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eAH04TC-5A\u003c\/strong\u003e\u003c\/span\u003e process mixed thermocouple types simultaneously across its four channels?\u003c\/strong\u003e\u003cbr\u003eYes, the module's input stage can be configured independently per channel via software to handle J, K, R, S, T, E, N types or raw millivolt signals without hardware modifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the best practice for wiring long thermocouple runs to this unit?\u003c\/strong\u003e\u003cbr\u003eAlways use matching extension wire corresponding to your specific thermocouple type and route shielded cables away from high-voltage AC motor lines to prevent common-mode noise corruption.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow should an engineer configure the buying selection for legacy expansion upgrades?\u003c\/strong\u003e\u003cbr\u003eVerify your system backplane model and ensure your software environment supports the AH series instruction set. Purchasing units with identical firmware revisions ensures seamless tag mapping during project file imports.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat triggers the internal disconnection detection alarm?\u003c\/strong\u003e\u003cbr\u003eThe circuit automatically trips an open-circuit flag if the sensor impedance exceeds normal thresholds, which instantly halts PID output loops to protect connected heating elements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the hot-swapping feature behave during runtime maintenance?\u003c\/strong\u003e\u003cbr\u003eThe backplane maintains bus communication while a single module is extracted, but you must ensure control logic handles fallback safe states for the specific thermal zones during the physical swap window.\u003c\/p\u003e","brand":"Delta","offers":[{"title":"Default Title","offer_id":47534005485750,"sku":"AH04TC-5A","price":198.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/AH04TC-5A.jpg?v=1789885052","url":"https:\/\/www.plcsparehub.com\/products\/ah04tc-5a-delta-ah-series-4-channel-thermocouple-input-unit","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}