{"product_id":"abb-07ai91-analog-input-module-8-channels-for-temperature-sensors","title":"ABB 07AI91 Analog Input Module-8 Channels for Temperature Sensors","description":"\u003ch2\u003eProduct Introduction\u003c\/h2\u003e\u003cp\u003eSignal drift and inaccurate readings can lead to costly process errors. The \u003cstrong\u003eABB 07AI91\u003c\/strong\u003e analog input module provides reliable, high-resolution measurement with built-in diagnostics to prevent failures. Designed as a remote module for the CS31 system bus, the \u003cstrong\u003eABB 07AI91\u003c\/strong\u003e features eight configurable channels for temperature sensors (Pt100\/Pt1000, thermocouples J\/K\/S) or voltage\/current inputs. Its self-calibration and comprehensive diagnosis functions ensure long-term stability and minimal downtime.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications Breakdown\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e8 (configurable in pairs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Ranges\u003c\/td\u003e\n\u003ctd\u003e±10 V, ±5 V, ±500 mV, ±50 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Range\u003c\/td\u003e\n\u003ctd\u003e0-20 mA \/ 4-20 mA (external 250 Ω shunt)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Sensors\u003c\/td\u003e\n\u003ctd\u003ePt100, Pt1000, Thermocouples J, K, S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e12 bit + sign\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Error\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; ±0.5% full scale (voltage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Current Consumption\u003c\/td\u003e\n\u003ctd\u003e0.15 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Power Dissipation\u003c\/td\u003e\n\u003ctd\u003e3 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLine Frequency Suppression\u003c\/td\u003e\n\u003ctd\u003e50 Hz, 60 Hz, or none\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e450 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (WxHxD)\u003c\/td\u003e\n\u003ctd\u003e120 x 140 x 85 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe \u003cstrong\u003eABB 07AI91\u003c\/strong\u003e supports multiple sensor types: Pt100 (2 mA excitation, -50 to +400 °C), Pt1000 (0.2 mA excitation), and thermocouples J (Fe-CuNi, 0-1200 °C), K (NiCr-NiAl, 0-1372 °C), and S (Pt10Rh-Pt, 0-1600 °C).\u003c\/p\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eIn high-temperature furnace monitoring, the \u003cstrong\u003eABB 07AI91\u003c\/strong\u003e connects directly to Type J thermocouples, providing linearized readings with 0.1 °C resolution. For process control loops, the module measures 4-20 mA signals from pressure or flow transmitters. Its diagnosis functions detect open circuits, sensor drift, and overvoltage, preventing costly measurement errors. The self-calibration routine runs automatically, maintaining accuracy over the entire 0-55 °C operating range.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eMount the \u003cstrong\u003eABB 07AI91\u003c\/strong\u003e on a DIN rail (15 mm deep) or use four M4 screws. Connect removable terminal blocks with screw-type terminals (max. 2.5 mm² conductor cross section). Configure input channels in pairs via DIL switches under the right housing cover. Set the module address for the CS31 bus using the same switches. Use shielded twisted-pair cables for thermocouple extensions (max. 200 m with \u0026gt;0.5 mm² cross section). Ensure electrically isolated sensors only. For current inputs, add an external 250 Ω resistor across the terminals.\u003c\/p\u003e\u003ch2\u003eTroubleshooting \u0026amp; Common Issues\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eABB 07AI91\u003c\/strong\u003e provides 17 front-panel LEDs for rapid diagnosis. Eight green LEDs indicate channel status; a red LED signals errors. Use the test button to cycle through diagnosis information. Common issues include miswired sensors or incorrect DIL switch settings. Verify that no unused channels remain unbridged (short them to avoid noise). If readings drift, run a self-calibration via the module's internal routine. For line frequency interference, set the suppression filter to match your local mains frequency (50 or 60 Hz).\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore purchasing, confirm that your controller supports the CS31 system bus and allocate one word input address for the \u003cstrong\u003eABB 07AI91\u003c\/strong\u003e. Ensure the sensor types match the configurable pairs. For reliable supply, choose UBEST Automation as your partner. We stock genuine ABB modules and can advise on integration. Visit \u003ca href=\"https:\/\/ubest101.myshopify.com\"\u003eubest101\u003c\/a\u003e for the \u003cstrong\u003eABB 07AI91\u003c\/strong\u003e and other industrial automation spares.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default","offer_id":44403201409123,"sku":"07AI91","price":235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/07AI91__E5_89_AF_E6_9C_AC3.jpg?v=1784975394","url":"https:\/\/www.plcsourcepro.com\/products\/abb-07ai91-analog-input-module-8-channels-for-temperature-sensors","provider":"PLC Source PRO","version":"1.0","type":"link"}