{"product_id":"honeywell-621-9928r-serial-link-selector-module","title":"Honeywell 621-9928R Serial Link Selector Module","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe Honeywell 621-9928R Serial Link Selector Module provides reliable serial communication management for IPC 621 systems. It enables seamless data transfer between controllers and distributed I\/O racks, ensuring continuous operation in demanding industrial environments. Moreover, its industrial-grade construction guarantees long-term stability even under high temperature and humidity conditions. Diagnostic LEDs offer real-time monitoring of communication links, allowing quick troubleshooting without disrupting system operations. In addition, the module supports redundant link configurations, enhancing system reliability for mission-critical processes.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eManages serial communication links with high reliability for Honeywell IPC 621 controllers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports RS-232 and RS-422 protocols for versatile system integration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProvides diagnostic LEDs for real-time status monitoring and troubleshooting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnables redundant link support to prevent communication failures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial-grade construction tolerates temperatures up to 60°C and high humidity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTwo 12-position detachable terminal modules simplify wiring and maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFunction:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSerial link selection and communication interface\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSupported Protocols:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRS-232 \/ RS-422 (configuration-dependent)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eData Rate:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUp to 19.2 kbps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCable Length:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUp to 50 ft (15.24 m)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConnector Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e25-pin D-sub serial connector\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Requirement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e+5 VDC from rack\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCurrent Draw:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e~250 mA typical\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0°C to +60°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e-40°C to +85°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHumidity Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5% to 95% RH, non-condensing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4.5 × 1.5 × 10.0 in (11.4 × 3.8 × 25.4 cm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1.65 lb\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eProcess automation in oil \u0026amp; gas, chemical, and power generation industries\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDistributed control systems (DCS) requiring reliable serial communication\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eManufacturing environments with multiple I\/O racks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRedundant communication setups to prevent system downtime\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Which protocols does the 621-9928R support?\u003c\/strong\u003e\u003cbr\u003eA1: The module supports RS-232 and RS-422 protocols, depending on your system configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can it handle redundant serial links?\u003c\/strong\u003e\u003cbr\u003eA2: Yes, the module is designed to support redundant links, improving reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What is the maximum cable length supported?\u003c\/strong\u003e\u003cbr\u003eA3: The 621-9928R supports cable runs up to 50 feet (15.24 meters).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Is this module suitable for harsh industrial environments?\u003c\/strong\u003e\u003cbr\u003eA4: Absolutely. It operates between 0°C to 60°C and tolerates 5–95% non-condensing humidity.\u003c\/p\u003e","brand":"HONEYWELL","offers":[{"title":"Default Title","offer_id":42684060893274,"sku":"621-9928R","price":209.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/621-9928R2.jpg?v=1766131580","url":"https:\/\/www.plcmasters.com\/products\/honeywell-621-9928r-serial-link-selector-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}