{"product_id":"abb-cma128-3dde300408-digital-i-o-control-module","title":"ABB CMA128 3DDE300408 Digital I\/O Control Module","description":"\u003ch3\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCMA128 (3DDE300408)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a compact digital input\/output control module engineered by\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eABB\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor use in high-availability industrial control systems. Designed to deliver deterministic I\/O performance, this module integrates digital signal acquisition, output driving, and internal diagnostics into a single hardware unit suitable for continuous operation in demanding environments.\u003c\/p\u003e\n\u003cp\u003eThe module is commonly deployed within ABB PLC and DCS architectures where stable backplane communication, electrical isolation, and long-term reliability are essential.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Functional Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCMA128 (3DDE300408)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecombines digital input monitoring and transistor-based output control in one hardware assembly. Its internal circuitry is optimized for fast signal response, high noise immunity, and secure data exchange with the system controller through the internal bus.\u003c\/p\u003e\n\u003cp\u003eThe module supports live maintenance scenarios, allowing replacement without shutting down the control system when installed in supported configurations. Integrated status monitoring assists maintenance personnel in identifying wiring errors or channel faults during operation.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eElectrical and I\/O Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDigital I\/O architecture: Combined input and output module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDigital input channels: 8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDigital output channels: 8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRated input voltage: 24 VDC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOutput switching type: Transistor, sourcing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaximum output load: 0.5 A per channel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eChannel isolation: Optical isolation between logic and field wiring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSystem supply voltage: 24 VDC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCommunication and System Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eBackplane communication with controller for deterministic data transfer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with PLC and DCS system buses used in ABB automation platforms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports controller-level protocols such as Modbus and Profibus via system CPU\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSelected variants may interface with Ethernet or RS-485 through host system architecture\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEnvironmental and Mechanical Data\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eOperating temperature: 0°C to +55°C (standard I\/O specification)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExtended operating range (variant dependent): −40°C to +70°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStorage temperature: −25°C to +70°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnclosure protection: IP20\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMounting method: DIN-rail\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDimensions: 17.6 × 10.2 × 1.2 cm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWeight: 0.5 kg\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTypical Application Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDistributed control systems in power generation facilities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePLC-based process automation and machine control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMetallurgical production lines and heavy manufacturing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater and wastewater treatment plants\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAuxiliary control panels requiring compact digital I\/O expansion\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan the CMA128 be replaced while the system is running?\u003c\/strong\u003e\u003cbr\u003eWhen used in compatible system architectures, the module supports hot replacement without requiring a full system shutdown.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the module suitable for electrically noisy environments?\u003c\/strong\u003e\u003cbr\u003eYes. Optical isolation and robust input filtering provide strong resistance to electromagnetic interference.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the module communicate directly over Ethernet?\u003c\/strong\u003e\u003cbr\u003eThe CMA128 itself communicates via the system backplane. Ethernet or serial communications are handled by the controller or dedicated communication modules.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":42926032781402,"sku":"CMA128 3DDE300408","price":258.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/CMA1283DDE300408.jpg?v=1771050526","url":"https:\/\/www.plcmasters.com\/fr\/products\/abb-cma128-3dde300408-digital-i-o-control-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}