{"product_id":"ace949-2-schneider-electric-rs485-2-wire-interface-for-sepam-series","title":"Interface RS485 2 fils Schneider Electric ACE949-2 pour série Sepam","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSchneider Electric ACE949-2\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as the critical communication bridge for the Sepam protective relay range, including the Series 20, 40, 60, and 80. As a high-performance RS485 2-wire interface, this module enables seamless integration of protection units into a Modbus RTU network (S-LAN or E-LAN). In complex power distribution environments, the ACE949-2 ensures real-time data transmission and remote monitoring of electrical parameters. Its compact, DIN-rail mounted design allows engineers to expand the communication capabilities of substation automation systems without sacrificing cabinet space. By facilitating robust 2-wire connectivity, the module provides a cost-effective and reliable solution for long-distance industrial telemetry.\u003c\/p\u003e\n\u003ch2\u003eKey Technical Advantages\u003c\/h2\u003e\n\u003ch3\u003eDual-Protocol Versatility\u003c\/h3\u003e\n\u003cp\u003eThe ACE949-2 architecture supports both S-LAN (System Local Area Network) and E-LAN (Engineering Local Area Network) configurations. This flexibility allows the module to function simultaneously as a reporting tool for SCADA systems and a dedicated port for remote engineering and parameter setting via software.\u003c\/p\u003e\n\u003ch3\u003eOptimized Power Management\u003c\/h3\u003e\n\u003cp\u003eDesigned for industrial efficiency, the module operates on a broad voltage range of 12 V DC to 24 V DC. It features intelligent power consumption management, drawing only 16 mA in receiving mode and peaking at 40 mA during active data transmission, ensuring minimal thermal load within the enclosure.\u003c\/p\u003e\n\u003ch3\u003eIndustrial-Grade Resilience\u003c\/h3\u003e\n\u003cp\u003eSchneider has engineered the ACE949-2 to withstand the rigors of harsh substation environments. The hardware meets stringent IEC 60255-21 standards for vibration, shock, and seismic activity (Level 2), ensuring the communication link remains intact even during mechanical disturbances or seismic events.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Signal Diagnostics\u003c\/h3\u003e\n\u003cp\u003eA front-facing LED indicator provides instantaneous visual feedback on link activity. This hardware-level diagnostic tool allows maintenance personnel to verify communication status at a glance, significantly reducing troubleshooting time during commissioning or network faults.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Name\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eACE949-2 (Ref: 59642)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSepam Series 20, 40, 48, 60, 80, 80 NPP\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNetwork Interface\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS485 - 2-wire\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProtocol\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eModbus RTU (E-LAN or S-LAN)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRated Supply Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12 V DC \/ 24 V DC (+\/- 10%)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSymmetrical DIN Rail\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-25°C to 70°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.1 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e88 mm (H) x 72 mm (W) x 30 mm (D)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSeismic Robustness\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 Gn (Horizontal), 1 Gn (Vertical)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003ch3\u003eCommunication Distance and Voltage Calibration\u003c\/h3\u003e\n\u003cp\u003eCable performance varies based on the supply voltage and the number of connected devices. For maximum reliability, adhere to the following distance constraints:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e24 V DC Supply:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports up to 1000m for 5 devices, or 375m for 25 devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e12 V DC Supply:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports up to 320m for 5 devices, or 125m for 25 devices.\u003c\/p\u003e\n\u003cp\u003eAlways use shielded twisted pair cables to minimize electromagnetic interference.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEarthing and Shielding\u003c\/h3\u003e\n\u003cp\u003eThe ACE949-2 requires a dedicated earthing connection to maintain signal integrity. Use the screw-type terminal for a tinned copper braid (6…100 mm²) or a standard cable (2.5…50 mm²). Ensure the earth lead length remains under 0.2 meters and is tightened to a torque of 2.2 N.m.\u003c\/p\u003e\n\u003ch3\u003eMounting Logic\u003c\/h3\u003e\n\u003cp\u003eInstall the module on a symmetrical DIN rail within the same cubicle as the Sepam relay. Maintain adequate clearance around the unit to allow for heat dissipation, even though the unit has low power consumption.\u003c\/p\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003eThe ACE949-2 is the industry standard for securing the longevity of Sepam-based protection schemes. Its primary advantage lies in its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eElectromagnetic Compatibility (EMC)\u003c\/strong\u003e; it is tested against 2.5 kV damped oscillating waves and 4 kV fast transients, making it virtually immune to the electrical noise common in high-voltage switchgear environments. While Schneider has announced a future discontinuation (Dec 2026), the ACE949-2 remains the essential \"drop-in\" spare for existing infrastructure, ensuring that legacy systems remain fully communicative and compliant with safety protocols through 2030 and beyond.\u003c\/p\u003e\n\u003ch2\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: \u003c\/strong\u003eThe datasheet mentions the ACE949-2 will be discontinued soon. Should I still buy it?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA1: \u003c\/strong\u003eYes. Schneider Electric has committed to \"End-of-Service\" support until December 31, 2030. For existing Sepam Series installations, the ACE949-2 is the exact OEM replacement required to maintain system integrity without needing to re-engineer the entire communication architecture.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2:\u003c\/strong\u003e Can I use the ACE949-2 for a 4-wire RS485 network?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA2: \u003c\/strong\u003eNo. The ACE949-2 is specifically designed for 2-wire RS485 networks. If your system requires a 4-wire configuration, you must select the appropriate 4-wire interface module (such as the ACE950) to ensure protocol compatibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3:\u003c\/strong\u003e How does the supply voltage affect my network length?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA3:\u003c\/strong\u003e Supply voltage is directly proportional to the allowable cable distance. Utilizing a 24 V DC power source nearly triples the effective range compared to a 12 V DC source (e.g., 750m vs 180m for 10 devices), which is critical for large-scale industrial plants.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: \u003c\/strong\u003eWhat is the significance of the LED on the front face?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA4: \u003c\/strong\u003eThe LED provides real-time link activity monitoring. A flashing LED confirms that the Modbus RTU polling is successful, allowing for rapid identification of whether a communication failure is due to hardware\/wiring or software configuration.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":52695403626859,"sku":"ACE949-2","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/schneider-ace949-2-interface-module-rloiqethywk_8637d61d-5e9f-48eb-b40d-3872696a404a.jpg?v=1766133922","url":"https:\/\/www.plcprotech.com\/fr\/products\/ace949-2-schneider-electric-rs485-2-wire-interface-for-sepam-series","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}