{"product_id":"abb-sdcs-fex-2a-3adt311500r1-dcs-drives-field-exciter-power-supply-board","title":"ABB SDCS-FEX-2A (3ADT311500R1) DCS Drives Field Exciter Power Supply Board","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nThe ABB SDCS-FEX-2A is an integrated single-phase field exciter and power supply circuit board engineered for internal mounting within armature converter modules. Functioning as a digital \u003cstrong\u003efield exciter board\u003c\/strong\u003e, this module consists of an integrated power part and an onboard control processor section that links all internal components both electrically and mechanically. \n\u003c\/p\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nThe \u003cstrong\u003eSDCS-FEX-2A\u003c\/strong\u003e is designed explicitly for installation inside ABB DCS converter modules of type C1, C2, and C3 alongside the electronic power supply board SDCS-POW-1, but is completely incompatible with C4 frame sizes. Operating with a wide single-phase rated input voltage range from 110V to 500V AC and a maximum current capacity of 16A, the \u003cstrong\u003e3ADT311500R1\u003c\/strong\u003e uses a fully digital micro-controller layout to dynamically scale its active burden resistors, ensuring optimal signal resolution across an automated selection band between 3A and 16A.\n\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eHalf-Controlled Bridge Rectification\u003c\/strong\u003e: Built using two internal diode-thyristor modules configured as a single-phase half-controlled bridge for high-efficiency motor field winding control.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eOnboard 80C198 Micro-controller\u003c\/strong\u003e: Features a dedicated embedded 80C198 micro-controller execution unit running localized PI firmware loop algorithms for direct current stabilization.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eAutomated Burden Scaling\u003c\/strong\u003e: Dynamically selects internal hardware burden resistors depending on the motor nominal field parameters to maximize control accuracy.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eIntegrated Surge Defenses\u003c\/strong\u003e: Equipped with dual Metal Oxide Varistors (MOVs) providing simultaneous transient voltage spike dampening across the AC input side and the inductive DC output circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eInternal motor field excitation and closed-loop DC current regulation inside ABB DCS500 and DCS600 converter units.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eHeavy industrial drive lineups including variable-speed fan groups, crane hoist infrastructure, and heavy extrusion systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.5rem; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.5rem; font-weight: bold;\"\u003eSpecification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eABB\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eModel Designation\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eSDCS-FEX-2A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eProduct ID \/ Order Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e3ADT311500R1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eControl Architecture\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eDigital 80C198 Micro-controller\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eAC Input Voltage Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e110V to 500V single-phase AC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eMaximum Current Output\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e16A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eAutomatic Current Selection Ranges\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eFrom 3A down to 16A resolution steps\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eSerial Interface Protocol\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eRS485 link to SDCS-CON-x board\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eFixed Communication Device Address\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eNode number = 1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003ePart Type Status\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eOriginal \/ New\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eFinland (FI) \/ Germany (DE)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e0.65 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e270 mm x 195 mm x 80 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nThe SDCS-FEX-2A module is specifically engineered for frame integration into DCS type C1, C2, and C3 converter modules. Do not attempt mechanical or electrical structural mounting inside larger type C4 converter bays, as the ventilation flows, structural sizing, and communication path cabling are completely non-interchangeable. The module retains a permanent fixed RS485 network routing identifier at Node Address 1, which requires strict configuration adherence on the accompanying master SDCS-CON-x board layout.\n\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nDuring initialization, the onboard microcontroller depends on real-time parameter streaming from the main armature processor memory via flat cable X14. If an interruption occurs in the RS485 communication link or parameter table configuration values fail to deploy correctly, the field control software will fail to scale the internal burden resistors, causing zero-current tracking faults. Additionally, when testing output loop values via the terminal row X20:, external multi-meters must maintain an internal operational resistance greater than 1M Ohm to prevent short-circuit conditions or measuring errors.\n\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"color: #9b2c2c; font-weight: bold; margin: 0;\"\u003e\n    CRITICAL WARNING: LETHAL HIGH VOLTAGE AC\/DC POTENTIALS\n  \u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0.5rem 0 0 0;\"\u003e\n    Isolate, switch off, and safety lockout all incoming three-phase AC feeder lines and distinct single-phase excitation voltage links supplying the converter chassis. Internal storage capacitors preserve high-energy electrical charges after supply line termination. Allow a minimum of 15 minutes for safety bleed-down to discharge completely, and verify a zero-energy state across all terminals with a calibrated testing device before handling internal circuitry.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; font-weight: bold; border-radius: 50%; min-width: 1.75rem; height: 1.75rem; display: flex; align-items: center; justify-content: center; margin-right: 0.75rem;\"\u003e1\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748; padding-top: 0.15rem;\"\u003eFasten a verified static protection grounding strap to your arm and clamp the grounding wire tightly onto an unpainted steel frame element of the earth-grounded control enclosure.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; font-weight: bold; border-radius: 50%; min-width: 1.75rem; height: 1.75rem; display: flex; align-items: center; justify-content: center; margin-right: 0.75rem;\"\u003e2\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748; padding-top: 0.15rem;\"\u003eCarefully detach the low-voltage flat ribbon connection assembly from interface port X14: and safely unscrew the main AC supply and motor inductive field output lines.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; font-weight: bold; border-radius: 50%; min-width: 1.75rem; height: 1.75rem; display: flex; align-items: center; justify-content: center; margin-right: 0.75rem;\"\u003e3\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748; padding-top: 0.15rem;\"\u003eAlign the replacement card frame onto the inner mounting channel alongside the SDCS-POW-1 power component, torque retaining hardware down to lock the ground loop path, and reconnect all cables.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":52668626960747,"sku":"SDCS-FEX-2A 3ADT311500R1","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/abb-sdcs-fex-2a-3adt311500r1-power-supply-circuit-board-2pmkphy25ir_eb46f1d4-28fb-4005-91b7-44474b47f65b.jpg?v=1765536019","url":"https:\/\/www.plcprotech.com\/ru\/products\/abb-sdcs-fex-2a-3adt311500r1-dcs-drives-field-exciter-power-supply-board","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}