TAC XENTA 451 SCHNEIDER Analog Output Module

Description TAC XENTA 451 SCHNEIDER Analog Output Module Product Dimensions： Product Description (Detailed Explanation) The TAC Xenta 451A is a robust and flexible HVAC/Central Plant Controller. Unlike the smaller, unitary controllers (like the Xenta 421A), the 451A is designed to manage larger, critical plant equipment and complex systems. Architecture: It functions as a node on the LonWorks network, communicating peer-to-peer with other Xenta devices, sensors, and the building server (e.g., TAC Xenta 700 series). Programmability: It is fully programmable using the TAC Menta graphical programming tool, allowing engineers to create custom control strategies for specific applications (e.g., sequencing chillers, optimizing air handling units). Expansion: It is designed to be expandable, supporting the connection of optional I/O expansion modules (such as the Xenta 400 I/O series) to accommodate a high count of inputs and outputs required by central plant systems. Product Parameters (Technical Specifications) Parameter Category Typical Specifications Product Type Freely Programmable Central Plant Controller Communication Protocol LonWorks (LonTalk), FTT-10A Transceiver Programming Tool TAC Menta (Graphical programming) Native I/O Varies by specific model, but typically includes a mix of:   • Universal Inputs (UI) for temp/voltage/resistance   • Digital Inputs (DI)   • Relay Outputs (DO)   • Analog Outputs (AO) I/O Expansion Supports connection to external I/O expansion modules (e.g., Xenta 400 I/O series) Power Supply Typically $24 V AC$ or $24 V DC$ Mounting DIN Rail Mounting Internal Memory Non-volatile memory for configuration and program storage Product Advantages (Key Benefits) High Flexibility: TAC Menta allows for the implementation of complex, custom control logic, making it ideal for unique or highly optimized HVAC sequences (e.g., fault-tolerant or energy-saving strategies). Scalability: The ability to add external I/O modules means the controller can easily scale its capacity to manage very large or intricate equipment (like a massive central chiller plant) without requiring multiple small controllers. Distributed Intelligence: As a LonWorks node, it operates autonomously. If the network supervisor goes offline, the 451A continues to execute its local control program, ensuring system resilience. Interoperability: LonWorks protocol enables seamless peer-to-peer communication with thousands of certified third-party devices, facilitating system integration. Precautions (Important Notes) LonWorks Network: Requires proper network design and termination. LonWorks is a specific fieldbus, and issues with wiring, termination resistors, or maximum node count can disrupt communication. Programming Software: Commissioning and programming require the specialized TAC Menta tool, which necessitates specific training and licensing. I/O Scaling: When using expansion modules, care must be taken to manage the maximum number of network variables (NVs) and ensure the controller’s processing power is not exceeded by excessive I/O scanning rates. Power Quality: As an electronic controller, it requires a stable, filtered $24 V$ power supply. Fluctuations or noise can lead to unstable operation or hardware damage. Product Applications (Typical Use Cases) The TAC Xenta 451A is deployed in critical control applications within commercial, institutional, and industrial buildings: Central Plant Control: Managing the sequencing, optimization, and load shedding of chillers, cooling towers, and boiler plants. Large Air Handling Units (AHUs): Controlling complex VAV systems, economizers, heating/cooling coils, and humidifiers for large zones. Pumping/Hydronic Systems: Implementing optimal pump staging and variable speed drive (VSD) control to maintain differential pressure in hot and chilled water loops. Process Control: Used in specific building-related processes where highly reliable and customized control logic is required.   Shipping Port: Xiamen, China Payment: Bank of Chicago, Bank of Singapore Express cooperation: fedex, DHL, UPS and your express account Service: Professional Sales provides 24 hours /7 days online service Please make an inquiry for more models： SCHNEIDER 140CPU31110C SCHNEIDER 140NRP95400 SCHNEIDER 140NOM25200C SCHNEIDER 140CPU43412AC SCHNEIDER 140SDI95300S SCHNEIDER 140NOM21200C SCHNEIDER 140CPU43412U SCHNEIDER 140SDO95300S SCHNEIDER 140NOM21100C SCHNEIDER 140CPU43412UC SCHNEIDER TSXP57303AM SCHNEIDER 140NOE77111C SCHNEIDER 140CPU53414BC SCHNEIDER 416NHM30032A SCHNEIDER 140NOE77101C SCHNEIDER 140CPU65260C SCHNEIDER 416NHM30030A SCHNEIDER 140NOC78100C SCHNEIDER 140CPU65160C SCHNEIDER LC1D09M7C SCHNEIDER 140NOC78100 SCHNEIDER 140CHS11000C SCHNEIDER 140AC013000 SCHNEIDER 140NOC78000C SCHNEIDER 140CHS21000C SCHNEIDER 140CPS12400R SCHNEIDER 140HLI34000C SCHNEIDER BMXDDI1602 SCHNEIDER 140NOM211OO SCHNEIDER 140ESI06210C SCHNEIDER BMXDDO1602 SCHNEIDER 140NWM10000 SCHNEIDER 140ERT85420C SCHNEIDER BMXAMI0810 SCHNEIDER 140XCP90000C SCHNEIDER 140EIA92100C SCHNEIDER BMXAMO0802 SCHNEIDER 140XBP01600C SCHNEIDER 140EHC20200C SCHNEIDER BMH2052P11A2A SCHNEIDER 140XBP01000C SCHNEIDER 140EHC10500C SCHNEIDER BMXDAO1605 SCHNEIDER 140XBP00600C SCHNEIDER 140DVO85300C SCHNEIDER BMXCPS3020 SCHNEIDER 140XBP00400C SCHNEIDER 140DSI35300C SCHNEIDER BMXDDO6402K SCHNEIDER 140XBP00300C SCHNEIDER 140DRC83000C SCHNEIDER BMXP342020H SCHNEIDER 140XBE10000C SCHNEIDER 140DRA84000C SCHNEIDER BMXEHC0800 SCHNEIDER 140NRP95400C SCHNEIDER 140DDO88500C SCHNEIDER BMXAMO0410 SCHNEIDER 140NRP95401C SCHNEIDER 140DDO84300C SCHNEIDER BMXXBP1200 SCHNEIDER 140NRP31201C SCHNEIDER 140DDO35310C SCHNEIDER 140CRA21120 SCHNEIDER 140NRP31201 SCHNEIDER 140DDO35301C SCHNEIDER 140ERT85420 SCHNEIDER 140NRP31200C SCHNEIDER 140DDO15310C SCHNEIDER 140N0E77100 SCHNEIDER 140NRP31200 SCHNEIDER 140DDO35300C SCHNEIDER 140NOC78000 SCHNEIDER 140NOP85000 SCHNEIDER 140DDM69000C