{"product_id":"abb-advant-ocs-07dc91-digital-input-output-module","title":"ABB Advant OCS 07DC91 Digital Input\/Output Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB 07DC91\u003c\/strong\u003e is a \u003cstrong\u003edigital input\/output module\u003c\/strong\u003e designed for the \u003cstrong\u003eAdvant Controller 31 (AC31)\u003c\/strong\u003e system. This module provides \u003cstrong\u003e16 digital I\/O channels\u003c\/strong\u003e (typically 8 inputs and 8 outputs, or configurable variants) operating at \u003cstrong\u003e24 V DC\u003c\/strong\u003e. The 07DC91 is the workhorse of the AC31 I\/O family, offering reliable digital signal acquisition and control for a wide range of industrial automation applications. Its compact design and proven CS31 bus integration make it a cost-effective solution for expanding AC31 system I\/O capacity.\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 Family:\u003c\/strong\u003e Advant Controller 31 (AC31)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Digital Input\/Output Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital I\/O Channels:\u003c\/strong\u003e 16 (8 DI \/ 8 DO typical configuration)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 24 V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 24 V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Current:\u003c\/strong\u003e 0.5 A per channel (typical)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 24 V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem Bus:\u003c\/strong\u003e CS31 Slave\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 Standard AC31 module form factor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~0.3 – 0.4 kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e DIN rail EN 50022-35 or screw mounting\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\u003eReliable Digital I\/O:\u003c\/strong\u003e Proven 24 V DC I\/O design handles standard industrial sensors, switches, solenoids, and contactors with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFixed I\/O Assignment:\u003c\/strong\u003e Predefined input and output channels simplify programming and reduce configuration complexity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransistor Outputs:\u003c\/strong\u003e Fast-switching transistor outputs provide reliable control of DC loads with built-in overload protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Status Indicators:\u003c\/strong\u003e Individual LEDs for each I\/O channel and supply voltage enable quick visual diagnostics.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCS31 Bus Slave:\u003c\/strong\u003e Seamlessly integrates into AC31 distributed architectures as a remote I\/O station.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact and Economical:\u003c\/strong\u003e Standard AC31 form factor at a competitive price point for cost-sensitive expansion projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDigital signal acquisition from limit switches and proximity sensors\u003c\/li\u003e\n  \u003cli\u003eSolenoid valve and relay coil control\u003c\/li\u003e\n  \u003cli\u003eConveyor system digital I\/O expansion\u003c\/li\u003e\n  \u003cli\u003eMachine safety interlock systems\u003c\/li\u003e\n  \u003cli\u003eBuilding automation digital control points\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 module on a 35 mm DIN rail (EN 50022) or secure with screws. Maintain vertical orientation for proper heat dissipation.\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\u003eInput Wiring:\u003c\/strong\u003e Connect 24 V DC sensors, switches, and pushbuttons to the digital input terminals. Input current is typically 5–10 mA per channel.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Wiring:\u003c\/strong\u003e Connect DC loads (solenoids, indicators, relays) to the digital output terminals. Ensure load current does not exceed the per-channel rating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCS31 Bus Connection:\u003c\/strong\u003e Connect the module to the CS31 system bus using the designated terminals. Set the station address via the coding switch (range: 1–61).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAddress Configuration:\u003c\/strong\u003e Each module on the CS31 bus must have a unique address. Avoid address conflicts with other remote stations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Verification:\u003c\/strong\u003e After power-on, check that the supply LED is illuminated and input\/output LEDs respond correctly to field device states.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 07DC91 and 07DI92?\u003c\/strong\u003e\u003cbr\u003e\nA: The \u003cstrong\u003e07DC91\u003c\/strong\u003e provides \u003cstrong\u003emixed digital I\/O\u003c\/strong\u003e (inputs and outputs). The \u003cstrong\u003e07DI92\u003c\/strong\u003e is a \u003cstrong\u003ededicated digital input module\u003c\/strong\u003e with 16 input channels only. Choose 07DI92 when you need only inputs; choose 07DC91 when you need a balanced mix of inputs and outputs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use the 07DC91 outputs to drive AC loads?\u003c\/strong\u003e\u003cbr\u003e\nA: No. The 07DC91 outputs are \u003cstrong\u003etransistor-type, 24 V DC only\u003c\/strong\u003e. For AC loads, use relay output modules or add external interposing relays.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum number of 07DC91 modules per CS31 bus?\u003c\/strong\u003e\u003cbr\u003e\nA: The CS31 bus supports up to \u003cstrong\u003e31 remote stations\u003c\/strong\u003e. Each station can be a single module or a group of modules. The total I\/O capacity depends on memory and communication bandwidth of the AC31 basic unit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are the outputs short-circuit protected?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. The transistor outputs feature built-in short-circuit and overload protection. Affected channels automatically shut down and can be reset.\u003c\/p\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eChoose \u003cstrong\u003e07DC91\u003c\/strong\u003e for standard digital I\/O expansion where a balanced mix of inputs and outputs is needed.\u003c\/li\u003e\n  \u003cli\u003eFor applications requiring \u003cstrong\u003econfigurable I\/O\u003c\/strong\u003e (any channel as input or output), upgrade to \u003cstrong\u003e07DC92\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eFor \u003cstrong\u003ededicated high-density input\u003c\/strong\u003e requirements, select \u003cstrong\u003e07DI92\u003c\/strong\u003e (16 DI).\u003c\/li\u003e\n  \u003cli\u003eAlways verify load current requirements. If driving high-inrush loads (contactors, large solenoids), add external relays or contactors.\u003c\/li\u003e\n  \u003cli\u003eGroup input and output cables separately in the cabinet to minimize inductive noise coupling.\u003c\/li\u003e\n  \u003cli\u003eWhen replacing a failed module, verify the exact model suffix to ensure identical I\/O count and terminal layout.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53797643059384,"sku":"07DC91","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/07DC91_1__1r180.png?v=1784701751","url":"https:\/\/www.globalpetroparts.com\/products\/abb-advant-ocs-07dc91-digital-input-output-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}