{"product_id":"allen-bradley-20-comm-h-communication-adapter","title":"Allen Bradley 20-COMM-H Communication Adapter","description":"\u003ch2\u003eAllen Bradley 20-COMM-H Communication Adapter\u003c\/h2\u003e\n\u003cp\u003eConfigured for RS-485 HVAC network interfacing in PowerFlex drive systems, the \u003cstrong\u003eAllen Bradley 20-COMM-H\u003c\/strong\u003e (\u003cstrong\u003e20-COMM-H\u003c\/strong\u003e Communication Adapter) provides direct physical\/electrical execution between Modbus RTU, Siemens Building Technologies, Metasys N2 protocols and PowerFlex DPI communication networks.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003e20-COMM-H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.99 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e150 mA at 5 VDC (drive current consumption)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCommunication Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003ePowerFlex 70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e400 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Size\u003c\/td\u003e\n\u003ctd\u003eFrame Size A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocols\u003c\/td\u003e\n\u003ctd\u003eModbus RTU, Siemens Building Technologies, Metasys N2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive Protocol\u003c\/td\u003e\n\u003ctd\u003eDPI (Deep Packet Interface)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Baud Rate\u003c\/td\u003e\n\u003ctd\u003eModbus RTU: 4,800 \/ 9,600 \/ 19,200 \/ 38,400 bits per second; Siemens Building Technologies: 4,800 \/ 9,600 bits per second; Metasys N2: 9,600 bits per second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDPI Baud Rate\u003c\/td\u003e\n\u003ctd\u003e125 kilobits per second or 500 kilobits per second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Rating\u003c\/td\u003e\n\u003ctd\u003e1.3 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eNEMA Type 1 (IP20)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Method\u003c\/td\u003e\n\u003ctd\u003eCaptive screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Phase Type\u003c\/td\u003e\n\u003ctd\u003e3-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power Rating\u003c\/td\u003e\n\u003ctd\u003e0.37 kW (0.5 HP) communication adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and Industrial Drive Communication Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 20-COMM-H communication adapter operates as an interface module between RS-485 HVAC communication networks and Allen Bradley PowerFlex drive platforms. The adapter supports Modbus RTU, Siemens Building Technologies, and Metasys N2 protocol communication while maintaining DPI communication with compatible PowerFlex drive architectures.\u003c\/p\u003e\n\u003cp\u003eThe module supports DPI communication rates of 125 kilobits per second and 500 kilobits per second. Communication parameters are configured according to the connected protocol requirements, including selectable Modbus RTU baud rates and fixed Metasys N2 communication operation.\u003c\/p\u003e\n\u003cp\u003eThe adapter is designed for integration with PowerFlex 70, PowerFlex 700, PowerFlex 700H, PowerFlex 700S, PowerFlex 700L, PowerFlex 750, and PowerFlex DC drive families. The captive screw mounting method provides mechanical retention within the drive communication interface assembly.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Which drive families are compatible with the 20-COMM-H adapter?\u003cbr\u003eA: The 20-COMM-H is designed for PowerFlex 70, PowerFlex 700, PowerFlex 700H, PowerFlex 700S, PowerFlex 700L, PowerFlex 750, and PowerFlex DC drive platforms supporting DPI communication.\u003c\/p\u003e\n\u003cp\u003eQ: What communication protocols are supported by this adapter?\u003cbr\u003eA: The adapter supports Modbus RTU, Siemens Building Technologies, and Metasys N2 communication protocols through an RS-485 HVAC interface.\u003c\/p\u003e\n\u003cp\u003eQ: What is the module power requirement from the drive interface?\u003cbr\u003eA: The adapter consumes 150 mA at 5 VDC from the connected drive communication interface.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 20-COMM-H adapter using the specified captive screw mounting points to ensure mechanical fixation inside the PowerFlex drive assembly.\u003c\/p\u003e\n\u003cp\u003eUse appropriate RS-485 wiring practices, including twisted pair conductors, correct signal polarity, and cable routing separation from high-voltage power conductors. Connect the communication cable shield according to the system grounding design to reduce electrical interference.\u003c\/p\u003e\n\u003cp\u003eVerify protocol settings, baud rate configuration, and DPI communication parameters before placing the drive network into operation. Confirm that the installed drive firmware and communication interface configuration support the selected adapter operation.\u003c\/p\u003e\n\u003cp\u003eMaintain the NEMA Type 1 (IP20) enclosure requirements by installing the module inside the intended drive enclosure environment and protecting the assembly from moisture, conductive contaminants, and mechanical damage.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43796507197530,"sku":"20-COMM-H","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/20-COMM-H2.jpg?v=1786074237","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-20-comm-h-communication-adapter","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}