{"product_id":"yokogawa-ec401-10-s2-centum-vp-bus-coupler-module","title":"Yokogawa EC401-10 S2 CENTUM VP Bus Coupler Module","description":"\u003ch2\u003eYokogawa EC401-10 S2 Bus Coupler Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa EC401-10 S2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eEC401\u003c\/strong\u003e Bus Coupler Module, operates as a dedicated hardware component for signal interconnectivity and bus expansion within Yokogawa CENTUM VP and FIO control system racks. Mounting directly onto the node chassis, the module interfaces internal backplane logic with external I\/O extension buses, handling 40-channel signal routing through secure terminal interfaces. The unit provides physical termination and signal coupling across distributed field control nodes while suppressing noise propagation across high-density I\/O subsystems.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSuffix Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunctional Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eEC401\u003c\/td\u003e\n\u003ctd\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003eBus Coupler \/ Terminal Interface Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-10\u003c\/td\u003e\n\u003ctd\u003eFunctional Option\u003c\/td\u003e\n\u003ctd\u003eStandard 40-channel bus coupling configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS2\u003c\/td\u003e\n\u003ctd\u003eStyle Revision\u003c\/td\u003e\n\u003ctd\u003eStyle S2 hardware layout and component update\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eEC401-10 S2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eIndonesia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.25 kg net (0.55 lbs \/ 1.2 kg shipping weight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e130 mm W x 30 mm H x 100 mm D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive bus backplane coupling power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Capacity\u003c\/td\u003e\n\u003ctd\u003e40 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003e100 Mohm minimum at 500 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstand Voltage\u003c\/td\u003e\n\u003ctd\u003e500 VAC dielectric isolation for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003eScrew-type (M3\/M4) connection block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Profile\u003c\/td\u003e\n\u003ctd\u003eRack or panel mounting profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol \u0026amp; Channel-to-Channel Isolation Integration\u003c\/h3\u003e\n\u003cp\u003eThe EC401-10 S2 bus coupler maintains internal dielectric isolation barriers rated at 500 VAC to safeguard low-voltage backplane data buses from field-side electrical interference. When routing mixed signal channels carrying 4-20 mA HART loop protocol carrier frequencies or millivolt CJC (cold junction compensation) reference signals, the module prevents ground loop formation across adjacent nodes. Built-in physical isolation barriers minimize cross-talk between high-density digital lines and sensitive analog measurement loops across the entire 40-channel interface.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the EC401-10 S2 module maintain signal integrity across long backplane cable runs?\u003c\/p\u003e\n\u003cp\u003eA: The module incorporates industrial-grade insulation and dedicated shield grounding plane interfaces, preventing high-frequency common-mode noise and ground potential differences from corrupting digital and analog bus signals.\u003c\/p\u003e\n\u003cp\u003eQ: Can the screw-terminal assembly be serviced or replaced without dismounting the host rack?\u003c\/p\u003e\n\u003cp\u003eA: Yes. Field wiring connects directly to the modular terminal interface, allowing technicians to disconnect field lines during maintenance without unseating the internal bus coupler board from the chassis rail.\u003c\/p\u003e\n\u003cp\u003eQ: Is external DC power required to operate the EC401-10 S2 module?\u003c\/p\u003e\n\u003cp\u003eA: No. The bus coupler draws its operational logic power directly from the internal FIO system backplane bus.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Screw Torque:\u003c\/strong\u003e Tighten all M3\/M4 screw terminals to a maximum torque of 0.5 to 0.6 Nm to ensure gas-tight electrical contact without stripping connector threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding Connection:\u003c\/strong\u003e Terminate all overall field cable shields directly to the cabinet functional earth (FE) bus bar using short, low-impedance grounding straps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Cable Segregation:\u003c\/strong\u003e Separate 4-20 mA analog wiring and low-voltage digital signal cables connected to the module from high-voltage AC power lines by a minimum distance of 200 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCabinet Environment Controls:\u003c\/strong\u003e Maintain ambient enclosure temperatures between -20 and +60 deg C with relative humidity below 95% (non-condensing) to avoid condensation on terminal surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43796436680794,"sku":"EC401-10-S2","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/757..jpg?v=1786070051","url":"https:\/\/www.spareoil.com\/ar\/products\/yokogawa-ec401-10-s2-centum-vp-bus-coupler-module","provider":"SpareOil Automation","version":"1.0","type":"link"}