{"product_id":"ge-fanuc-820-0154-wesdac-d20-s-digital-status-input-module","title":"GE Fanuc 820-0154 WESDAC D20 S Digital Status Input Module","description":"\u003ch1\u003eGE 820-0154 WESDAC D20S Digital Status Input Module\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eGE 820-0154\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e820-0154\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDigital Status Input Module) operates as a dedicated digital input interface for status monitoring within WESDAC D20 and D200 RTU systems. The module provides 64 optically isolated status input channels for acquisition of field contact and alarm conditions in utility automation and substation control applications.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"___1vyiefv f1ddd56o f16vktn6 f1ahpp82 f11qra4b f1uinfot fibjyge fvueend f9yszdx f1fu4s3n f3l3pb3 f10ghnd0 f8fmt76 fjvbh62 f1qrqxae f1vw5qpk fc02sbz fxawf59 fymf513 f1aoyrul f1el8yx3 f1pymoxg f1ofu761 fe6itr f7coize f1794535 f1o0pw0q fbjjl9v fk1v6el f16pyhcb f1ixlhx9 f12zef0i flu5r5u f19haqzy f1owmcxx f1oddm8q f1004tna fcoaxci fh0ee9u f15v23i2 f1dmj53 f1r1gcv9 f14z1veh ffufd3x f1ypplot f1660cg\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e820-0154\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eWESDAC D20S Digital Status Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Capacity\u003c\/td\u003e\n\u003ctd\u003e64 Digital Status Inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Organization\u003c\/td\u003e\n\u003ctd\u003e8 Groups x 8 Inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor\u003c\/td\u003e\n\u003ctd\u003eFreescale (Motorola) 68HC11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Speed\u003c\/td\u003e\n\u003ctd\u003e2.0 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEPROM Memory\u003c\/td\u003e\n\u003ctd\u003e32 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSRAM\u003c\/td\u003e\n\u003ctd\u003e24 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEEPROM\u003c\/td\u003e\n\u003ctd\u003e512 Bytes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Isolation\u003c\/td\u003e\n\u003ctd\u003eOptical Isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e±3.0 mA to ±6.0 mA per active input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSampling Rate\u003c\/td\u003e\n\u003ctd\u003e1.0 microsecond\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD20 Link Speed\u003c\/td\u003e\n\u003ctd\u003e250 Kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD20 Link Interface\u003c\/td\u003e\n\u003ctd\u003eRS-485 Half-Duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocols\u003c\/td\u003e\n\u003ctd\u003eHDLC, Manchester Coded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagnostic Port\u003c\/td\u003e\n\u003ctd\u003e9600 bps Serial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e20 VDC to 60 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e3 W Typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-30 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 1.83 kg to 2.93 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDigital Input Processing and Isolation\u003c\/h3\u003e\n\u003cp\u003eThe module monitors 64 discrete field status signals arranged in eight electrically isolated groups. Optical isolation protects the input circuitry from transient voltages and electrical disturbances commonly present in substation and utility environments.\u003c\/p\u003e\n\u003ch3\u003eCommunication and Data Acquisition\u003c\/h3\u003e\n\u003cp\u003eThe 820-0154 communicates with WESDAC D20 and D200 master controllers through a 250 Kbps D20 Link interface using RS-485 half-duplex communication. Status changes are processed by dedicated onboard electronics and transmitted to the RTU for supervisory monitoring and control functions.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many status inputs are supported by the module?\u003c\/strong\u003e\u003cbr\u003eA: The module provides 64 digital status input channels arranged in eight groups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are the input channels isolated?\u003c\/strong\u003e\u003cbr\u003eA: Yes. All status inputs utilize optical isolation to reduce the effects of electrical transients.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What communication interface is used to connect to the RTU?\u003c\/strong\u003e\u003cbr\u003eA: The module uses a D20 Link RS-485 half-duplex interface operating at 250 Kbps.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eVerify wetting voltage configuration before connecting field contacts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRoute input wiring separately from power and switching circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConfirm proper grounding of the RTU enclosure and termination panel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInspect fuse protection and input group assignments before energization.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify communication link integrity after commissioning.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":41558095593546,"sku":"820-0154 WESDAC D20 S","price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/8569\/3770\/files\/WESDACD20S_1.png?v=1741076995","url":"https:\/\/www.topbrandsplc.com\/products\/ge-fanuc-820-0154-wesdac-d20-s-digital-status-input-module","provider":"Topbrands PLC Limited","version":"1.0","type":"link"}