{"product_id":"abb-advant-ocs-07ai91-wt91-analog-input-module","title":"ABB Advant OCS 07AI91 WT91 Analog Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB 07AI91\u003c\/strong\u003e (Product ID: \u003cstrong\u003eGJR5251600R0202\u003c\/strong\u003e or \u003cstrong\u003eGJR5251600R4202\u003c\/strong\u003e) is a \u003cstrong\u003ehigh-precision analog input module\u003c\/strong\u003e for the \u003cstrong\u003eAdvant Controller 31 (AC31)\u003c\/strong\u003e system. Featuring \u003cstrong\u003e8 configurable analog input channels\u003c\/strong\u003e, this module supports a wide range of signal types including \u003cstrong\u003evoltage, current, RTD (Pt100\/Pt1000), and thermocouples (J, K, S)\u003c\/strong\u003e. With \u003cstrong\u003e12-bit + sign resolution\u003c\/strong\u003e and comprehensive diagnostic LEDs, the 07AI91 is the premier choice for temperature measurement and precision signal acquisition in industrial automation.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e ABB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct IDs:\u003c\/strong\u003e GJR5251600R0202, GJR5251600R4202\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 4013614267635\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Family:\u003c\/strong\u003e Advant Controller 31 (AC31)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Analog Input Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalog Inputs:\u003c\/strong\u003e 8 channels, configurable in pairs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Input Ranges:\u003c\/strong\u003e ±10 V, ±5 V, ±500 mV, ±50 mV\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Input Ranges:\u003c\/strong\u003e 0–20 mA, 4–20 mA (via 250 Ω external shunt)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRTD Support:\u003c\/strong\u003e Pt100 (-50°C to +400°C), Pt1000\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermocouple Support:\u003c\/strong\u003e Type J (0–1200°C), Type K (0–1372°C), Type S (0–1600°C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 12-bit + sign (1 LSB = 0.1°C for Pt100; 0.4°C for thermocouples)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Error:\u003c\/strong\u003e \u0026lt; ±0.5% of full scale\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLine Frequency Suppression:\u003c\/strong\u003e Configurable 50 Hz, 60 Hz, or none\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUpdate Period per Channel:\u003c\/strong\u003e ~30 ms (no suppression); ~100 ms (with suppression); ~150 ms (thermocouples with suppression)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 24 V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e Max. 3 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to +55°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -25°C to +75°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 120 × 140 × 85 mm (W × H × D)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.45 – 0.48 kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e DIN rail EN 50022-35 (TH35-15 or TH35-7.5) or 4 × M4 screws\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTerminal Cross-Section:\u003c\/strong\u003e Max. 2.5 mm²\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Indicators:\u003c\/strong\u003e 17 LEDs (operation and error status)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection Rating:\u003c\/strong\u003e IP20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE, UL, RoHS\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Signal Flexibility:\u003c\/strong\u003e Single module handles voltage, current, RTD, and thermocouple inputs — eliminates the need for multiple specialized modules.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmbient-Compensated Thermocouples:\u003c\/strong\u003e Internal reference junction compensation ensures accurate temperature readings despite cabinet temperature variations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Precision:\u003c\/strong\u003e 12-bit + sign resolution with \u003cstrong\u003e\u0026lt; ±0.5% FS accuracy\u003c\/strong\u003e delivers trustworthy measurements for critical process control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLine Frequency Rejection:\u003c\/strong\u003e Configurable 50\/60 Hz suppression filters out electrical noise from motors, drives, and power lines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComprehensive Diagnostics:\u003c\/strong\u003e 17 LED indicators provide at-a-glance status for all channels and system health, speeding up troubleshooting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical Isolation:\u003c\/strong\u003e 1500 V AC galvanic isolation between inputs, outputs, and power supply protects against ground loops and transients.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eTemperature monitoring in chemical reactors and furnaces\u003c\/li\u003e\n  \u003cli\u003eProcess variable acquisition (pressure, flow, level transmitters)\u003c\/li\u003e\n  \u003cli\u003eEnvironmental monitoring and HVAC control\u003c\/li\u003e\n  \u003cli\u003eFood and beverage pasteurization and cooking processes\u003c\/li\u003e\n  \u003cli\u003ePower plant boiler and turbine monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Install on a 35 mm DIN rail (TH35-15 or TH35-7.5 per IEC 60715) or secure with 4 × M4 screws. Maintain vertical orientation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e Connect \u003cstrong\u003e24 V DC\u003c\/strong\u003e to the power terminals. Verify polarity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal Wiring:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eVoltage\/Current:\u003c\/strong\u003e Use shielded twisted-pair cables. Connect signal wires to the appropriate terminals.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eRTD (3-wire):\u003c\/strong\u003e Connect the three RTD leads to the designated terminals. The module automatically compensates for lead resistance.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eThermocouple:\u003c\/strong\u003e Connect thermocouple leads directly to the input terminals. Ensure correct polarity. The module provides internal cold-junction compensation.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChannel Configuration:\u003c\/strong\u003e Use the AC31 programming software to configure each channel pair for the desired signal type and range. Mismatched configuration will result in incorrect readings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLine Frequency Suppression:\u003c\/strong\u003e Set the suppression filter to match your local power frequency (50 Hz or 60 Hz) for maximum noise rejection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCS31 Bus:\u003c\/strong\u003e Connect to the CS31 bus and set the module address via the coding switch.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerification:\u003c\/strong\u003e Apply known reference signals and compare module readings. Calibrate if deviation exceeds acceptable limits.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I mix RTD and thermocouple inputs on the same 07AI91 module?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. The 8 channels are configurable in pairs, allowing mixed signal types across the module. However, channels within a pair must use the same configuration.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between GJR5251600R0202 and GJR5251600R4202?\u003c\/strong\u003e\u003cbr\u003e\nA: These are different revisions or variants of the 07AI91 module. The core functionality is identical, but firmware features, terminal types, or certifications may differ. Verify compatibility with your AC31 basic unit before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need external signal conditioners for thermocouples?\u003c\/strong\u003e\u003cbr\u003e\nA: No. The 07AI91 provides built-in cold-junction compensation and direct thermocouple connection. No external signal conditioners are required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum cable length for RTD sensors?\u003c\/strong\u003e\u003cbr\u003e\nA: Cable length depends on wire gauge and acceptable measurement error. As a general guideline, keep RTD cable runs under \u003cstrong\u003e100 meters\u003c\/strong\u003e for 3-wire configurations to minimize lead resistance effects.\u003c\/p\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eChoose \u003cstrong\u003e07AI91\u003c\/strong\u003e when your application involves \u003cstrong\u003etemperature measurement\u003c\/strong\u003e (RTD or thermocouple) or requires \u003cstrong\u003ehigh-precision analog input\u003c\/strong\u003e with multiple signal types.\u003c\/li\u003e\n  \u003cli\u003eFor balanced analog I\/O (equal AI and AO), select \u003cstrong\u003e07AC91\u003c\/strong\u003e instead.\u003c\/li\u003e\n  \u003cli\u003eAlways use \u003cstrong\u003e3-wire RTD\u003c\/strong\u003e connections for best accuracy; 2-wire configurations introduce lead resistance errors.\u003c\/li\u003e\n  \u003cli\u003eFor thermocouple applications, verify the temperature range of your process matches the supported thermocouple types (J: 0–1200°C, K: 0–1372°C, S: 0–1600°C).\u003c\/li\u003e\n  \u003cli\u003eWhen replacing a failed module, record the channel configuration settings to ensure identical replacement behavior.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53797590991032,"sku":"07AI91","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/07AI91_WT91_GJR5251600R4202_1r180.png?v=1784701696","url":"https:\/\/www.globalpetroparts.com\/products\/abb-advant-ocs-07ai91-wt91-analog-input-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}