{"product_id":"serial-link-selector-621-9928r-honeywell-redundant-sls","title":"Serial Link Selector 621-9928R Honeywell Redundant SLS","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eHoneywell 621-9928R is a Serial Link Selector (SLS) module used in redundant Logic Manager configurations. It switches shared serial communication devices between primary and secondary processors under control of the Redundancy Control Module.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Serial Link Selector (SLS)\u003c\/li\u003e\n\u003cli\u003eConfiguration: Double-wide module\u003c\/li\u003e\n\u003cli\u003eSlots: B and C of one I\/O card file per serial system\u003c\/li\u003e\n\u003cli\u003eControl: Driven by Redundancy Control Module (RCM)\u003c\/li\u003e\n\u003cli\u003eConnectors: Front-panel 12-position terminals (A, B, Out)\u003c\/li\u003e\n\u003cli\u003eIndication: LEDs show active processor (A or B)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAutomatic switching of serial devices to the active processor\u003c\/li\u003e\n\u003cli\u003eSupports redundant Logic Manager architectures\u003c\/li\u003e\n\u003cli\u003eFront-panel status LEDs for quick diagnostics\u003c\/li\u003e\n\u003cli\u003eDetachable screw terminals for easy wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose?\u003c\/strong\u003e Switch serial links in redundant systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControlled by?\u003c\/strong\u003e Redundancy Control Module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth?\u003c\/strong\u003e Double-wide module.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eInstall in slots B and C of the designated I\/O card file.\u003c\/li\u003e\n\u003cli\u003eConnect serial cables from processors A and B to the A and B terminals.\u003c\/li\u003e\n\u003cli\u003eWire the shared serial device to the Out terminal.\u003c\/li\u003e\n\u003cli\u003eConnect the switch-select signals from the RCM.\u003c\/li\u003e\n\u003cli\u003ePower up and verify the active-processor LED.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRequired for redundant serial I\/O or terminal sharing.\u003c\/li\u003e\n\u003cli\u003eUse one SLS per serial system in a redundant pair.\u003c\/li\u003e\n\u003cli\u003eKeep as a spare for high-availability Logic Manager setups.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52994021359927,"sku":"621-9928R","price":137.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/8343\/6343\/files\/621-9928R_2_f0a61664-d5c1-4af3-a817-cbe1a5c80f47.jpg?v=1789547708","url":"https:\/\/www.controltech-supply.com\/products\/serial-link-selector-621-9928r-honeywell-redundant-sls","provider":"ControlTech Supply Limited","version":"1.0","type":"link"}