{"product_id":"siemens-6es7231-5qa30-0xb0-sb-1231-tc-thermocouple-module","title":"Siemens 6ES7231-5QA30-0XB0 SIMATIC S7-1200 SB 1231 TC 1 AI Thermocouple Module","description":"\u003cp\u003eThe Siemens 6ES7231-5QA30-0XB0 is a SIMATIC S7-1200 SB 1231 TC signal board with one thermocouple input for Type J or K sensors, resolving temperature at up to 15 bit plus sign. It mounts on the CPU front, reads ±80 mV directly in voltage mode, and reports wire-break diagnostics at ±0.1% accuracy at 25°C over the total measurement range.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e6ES7231-5QA30-0XB0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSIMATIC S7-1200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type Designation\u003c\/td\u003e\n\u003ctd\u003eSB 1231, AI 1x16 bit TC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Inputs\u003c\/td\u003e\n\u003ctd\u003e1, thermocouple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermocouple Types Supported\u003c\/td\u003e\n\u003ctd\u003eType J, Type K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Input Range\u003c\/td\u003e\n\u003ctd\u003e-80 mV to +80 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance, Voltage Range\u003c\/td\u003e\n\u003ctd\u003e≥1 MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution, max. (with overrange)\u003c\/td\u003e\n\u003ctd\u003e15 bit + sign\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Principle\u003c\/td\u003e\n\u003ctd\u003eIntegrating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterference Voltage Suppression\u003c\/td\u003e\n\u003ctd\u003e85 dB at 10\/50\/60\/400 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Error\u003c\/td\u003e\n\u003ctd\u003e±0.1% at 25°C, ±0.2% to 55°C, total measurement range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRepeat Accuracy at 25°C\u003c\/td\u003e\n\u003ctd\u003e±0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Mode Interference Suppression, min.\u003c\/td\u003e\n\u003ctd\u003e120 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire-Break Diagnostics\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length, shielded, max.\u003c\/td\u003e\n\u003ctd\u003e100 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Loss, typ.\u003c\/td\u003e\n\u003ctd\u003e0.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption, typ.\u003c\/td\u003e\n\u003ctd\u003e5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Temperature, Operation\u003c\/td\u003e\n\u003ctd\u003e-20°C to 60°C horizontal, -20°C to 50°C vertical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions, W x H x D\u003c\/td\u003e\n\u003ctd\u003e38 x 62 x 21 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight, approx.\u003c\/td\u003e\n\u003ctd\u003e35 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eCertifications \u0026amp; Standards\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCE mark\u003c\/li\u003e\n\u003cli\u003eCSA approval\u003c\/li\u003e\n\u003cli\u003eUL approval\u003c\/li\u003e\n\u003cli\u003ecULus\u003c\/li\u003e\n\u003cli\u003eFM approval\u003c\/li\u003e\n\u003cli\u003eRCM\u003c\/li\u003e\n\u003cli\u003eKC approval\u003c\/li\u003e\n\u003cli\u003eMarine approval\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSelection Notes\u003c\/h2\u003e\u003cp\u003eChoose the SB 1231 TC when a station needs exactly one extra thermocouple channel on a compact 1212C or 1214C CPU rather than a full SM 1231 TC module; it occupies the CPU's signal-board slot instead of a rack position. The module accepts Type J or Type K thermocouples directly and flags open-circuit sensor wiring through its diagnostics function, which matters on temperature loops where a broken junction would otherwise read as a frozen or drifting value rather than a fault. Its ±0.1% accuracy at 25°C, widening to ±0.2% up to 55°C, is adequate for process monitoring but should be checked against the application's control tolerance before specifying it for closed-loop temperature control.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eSingle-point temperature monitoring on ovens, extruders, or dryers built around the S7-1200, or a spare thermocouple channel added to a machine that already uses its onboard analog inputs for other signals.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":53960782053659,"sku":"6ES7231-5QA30-0XB0","price":134.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7722\/4475\/files\/siemens-6es7231-5qa30-0xb0-sb-1231-tc-thermocouple-module.png?v=1789663245","url":"https:\/\/stoklink.com\/products\/siemens-6es7231-5qa30-0xb0-sb-1231-tc-thermocouple-module","provider":"Stoklink","version":"1.0","type":"link"}