{"product_id":"communication-module-abb-1vcf750079r801-ref-542plus","title":"Communication Module | ABB 1VCF750079R801 REF 542plus","description":"\u003ch2\u003eABB 1VCF750079R801 Modbus RS485 Communication Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB 1VCF750079R801\u003c\/strong\u003e (Product ID: 1VCF750079801) is a serial communication module designed for integration with ABB REF 542plus protection and control systems. It provides a dedicated RS485 interface to enable data exchange between medium-voltage feeder protection relays and supervisory networks such as SCADA systems, PLCs, and remote monitoring consoles.\u003c\/p\u003e\n\u003ch3\u003eSerial Protocol and Interface Specifications\u003c\/h3\u003e\n\u003cp\u003eOperating on an RS485 physical layer, the module supports Modbus RTU and ASCII protocols over 2-wire or 4-wire bus topology. It handles serial transmission speeds up to 115.2 kbps, allowing real-time retrieval of protection parameters, telemetry, and event records over network distances up to 1200 meters.\u003c\/p\u003e\n\u003ch3\u003eIsolation and Electrical Requirements\u003c\/h3\u003e\n\u003cp\u003eTo protect internal relay logic from field noise and ground loops, the module incorporates galvanic isolation between the internal control circuitry and the external RS485 communication bus. The unit operates from an auxiliary DC supply with an input voltage range of 12-24 V DC (typical 24 V DC plus-minus 10%), drawing approximately 100 mA with power consumption rated at 1.2 W to 3 W.\u003c\/p\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\u003e1VCF750079R801\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct ID\u003c\/td\u003e\n\u003ctd\u003e1VCF750079801\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eModbus RS485 Communication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Equipment\u003c\/td\u003e\n\u003ctd\u003eABB REF 542plus Protection and Control Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eRS485 (2-wire or 4-wire)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Protocols\u003c\/td\u003e\n\u003ctd\u003eModbus RTU, ASCII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Speed\u003c\/td\u003e\n\u003ctd\u003eUp to 115.2 kbps (9600 bps default)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Cable Distance\u003c\/td\u003e\n\u003ctd\u003eUp to 1200 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eGalvanic isolation between system and network\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Voltage\u003c\/td\u003e\n\u003ctd\u003e12-24 V DC (24 V DC plus-minus 10%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e1.2 W to 3 W (approx. 100 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-25 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP20 (when installed in enclosure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x H x D)\u003c\/td\u003e\n\u003ctd\u003e110 mm x 75 mm x 40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e0.28 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eMalaysia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: Which ABB protection platform uses the 1VCF750079R801 module? A: The module is designed specifically for integration with ABB REF 542plus medium-voltage feeder protection and control systems.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1VCF750079R801 support 4-wire RS485 connections? A: Yes, the RS485 serial interface supports both 2-wire and 4-wire bus wiring configurations for Modbus RTU communications.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":43781592449123,"sku":"1VCF750079R801","price":676.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/270._98991d71-7bec-4111-be85-d645cc01f2e1.jpg?v=1794306259","url":"https:\/\/www.autocontrolglobal.com\/products\/communication-module-abb-1vcf750079r801-ref-542plus","provider":"AutoControl Global","version":"1.0","type":"link"}