{"product_id":"abb-advant-ocs-07ac91-ac31-analog-i-o-module","title":"ABB Advant OCS 07AC91 AC31 Analog I\/O module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB 07AC91\u003c\/strong\u003e (Product ID: \u003cstrong\u003eGJR5252300R0101\u003c\/strong\u003e) is an \u003cstrong\u003eanalog input\/output module\u003c\/strong\u003e designed for the \u003cstrong\u003eAdvant Controller 31 (AC31)\u003c\/strong\u003e system. This versatile module provides \u003cstrong\u003e8 analog input channels\u003c\/strong\u003e and \u003cstrong\u003e8 analog output channels\u003c\/strong\u003e, making it the go-to solution for process control applications requiring precise measurement and control of continuous variables such as temperature, pressure, flow, and level. With \u003cstrong\u003e12-bit + sign resolution\u003c\/strong\u003e and configurable signal ranges, the 07AC91 delivers the accuracy and flexibility demanded by modern 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 ID:\u003c\/strong\u003e GJR5252300R0101\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\/Output Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalog Inputs:\u003c\/strong\u003e 8 channels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalog Outputs:\u003c\/strong\u003e 8 channels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Signal Types:\u003c\/strong\u003e ±10 V, 0–10 V, 0–20 mA, 4–20 mA (configurable per channel)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Signal Types:\u003c\/strong\u003e ±10 V, 0–10 V, 0–20 mA, 4–20 mA (configurable per channel)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 12-bit + sign\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 24 V DC\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 mm × 140 mm × 85 mm (W × H × D)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~0.4 – 0.81 kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e DIN rail EN 50022-35\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection Rating:\u003c\/strong\u003e IP20\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Conversion:\u003c\/strong\u003e 12-bit + sign resolution ensures precise signal acquisition and output control for demanding process applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Signal Ranges:\u003c\/strong\u003e Each channel independently configurable for voltage (±10 V, 0–10 V) or current (0–20 mA, 4–20 mA) signals — adapt to any sensor or actuator.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBalanced I\/O Count:\u003c\/strong\u003e Equal number of inputs and outputs (8 AI \/ 8 AO) simplifies system design for closed-loop control applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical Isolation:\u003c\/strong\u003e Channels are electrically isolated from the system bus and power supply, protecting against ground loops and transient interference.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCS31 Bus Integration:\u003c\/strong\u003e Communicates seamlessly with AC31 basic units via the CS31 system bus, enabling distributed analog I\/O architectures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Modular Design:\u003c\/strong\u003e Standard AC31 form factor allows easy installation and hot-swappable replacement in running systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eProcess control loops (temperature, pressure, flow, level)\u003c\/li\u003e\n  \u003cli\u003ePID control with analog feedback\u003c\/li\u003e\n  \u003cli\u003eVariable speed drive analog reference signals\u003c\/li\u003e\n  \u003cli\u003eData acquisition and trending systems\u003c\/li\u003e\n  \u003cli\u003eWater treatment and chemical dosing control\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 the 07AC91 on a 35 mm DIN rail (EN 50022) in the control cabinet. Ensure vertical orientation with terminals at top and bottom.\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 before energizing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalog Input Wiring:\u003c\/strong\u003e Connect field sensors (transmitters, transducers) to the AI terminals. Use shielded twisted-pair cables for noise immunity. Ground the shield at one end only.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalog Output Wiring:\u003c\/strong\u003e Connect actuators, VFDs, or indicators to the AO terminals. For current outputs (4–20 mA), ensure the load resistance is within the module's specified range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal Configuration:\u003c\/strong\u003e Configure each channel's signal type (voltage\/current) and range via the AC31 programming software. Incorrect configuration may damage the module or provide inaccurate readings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCS31 Bus Connection:\u003c\/strong\u003e Connect the module to the CS31 bus and set the station address using the coding switch.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e Perform zero and span calibration for critical applications using certified reference sources.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerification:\u003c\/strong\u003e After power-on, verify signal readings against known values and check for stable output behavior.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 07AC91 and 07AI91?\u003c\/strong\u003e\u003cbr\u003e\nA: The \u003cstrong\u003e07AC91\u003c\/strong\u003e provides \u003cstrong\u003e8 AI + 8 AO\u003c\/strong\u003e (balanced analog I\/O). The \u003cstrong\u003e07AI91\u003c\/strong\u003e provides \u003cstrong\u003e8 AI only\u003c\/strong\u003e but supports RTD (Pt100\/Pt1000) and thermocouple (J, K, S) inputs in addition to voltage\/current. Choose 07AI91 for temperature measurement; choose 07AC91 for general-purpose analog control.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use 4–20 mA and 0–10 V signals on the same module?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. Each channel is independently configurable. You can mix voltage and current signals across the 8 input and 8 output channels as needed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the accuracy of the 07AC91?\u003c\/strong\u003e\u003cbr\u003e\nA: The module provides \u003cstrong\u003e12-bit + sign resolution\u003c\/strong\u003e with typical accuracy of \u003cstrong\u003e±0.1% to ±0.5% of full scale\u003c\/strong\u003e depending on signal type and environmental conditions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is the 07AC91 hot-swappable?\u003c\/strong\u003e\u003cbr\u003e\nA: While the AC31 system supports online configuration changes, always consult your system documentation before removing or inserting modules under power. Some configurations may require a controlled shutdown.\u003c\/p\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eChoose \u003cstrong\u003e07AC91\u003c\/strong\u003e when you need equal numbers of analog inputs and outputs for balanced control loops.\u003c\/li\u003e\n  \u003cli\u003eFor temperature-specific applications (RTD\/thermocouple), select \u003cstrong\u003e07AI91\u003c\/strong\u003e instead.\u003c\/li\u003e\n  \u003cli\u003eVerify the signal types of your field devices (voltage vs. current) before configuring the module.\u003c\/li\u003e\n  \u003cli\u003eUse shielded cables for all analog connections and maintain separation from high-voltage power cables to minimize noise pickup.\u003c\/li\u003e\n  \u003cli\u003eConsider adding signal isolators or surge protectors in high-interference environments.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53797590696120,"sku":"07AC91","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/GJR5252300R3101_07AC91H_1.png?v=1784701394","url":"https:\/\/www.globalpetroparts.com\/products\/abb-advant-ocs-07ac91-ac31-analog-i-o-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}