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TemperatureControllersFor <strong>com</strong>plete information onCPC400 controllers referencepages 249 to 252.CPC400The Watlow CPC400 controllersprovide performance and flexibility ina <strong>com</strong>pact design and integrate fullfeaturedclosed-loop control withuser-written logic. Programmablelogic can interact with closed-loopcontrol and operate I/Oindependently.Four and eight loop versions offer<strong>com</strong>plete control solutions for abroad range of plastics applications.The CPC400 supportsthermocouples, RTDs, linear voltage,current and frequency. Built-indiagnostics automatically detectsensor failures including open,shorted and reversed conditions. I/Ocan also be utilized for closed-loopcontrol, alarms and user programs.Using the built-in <strong>com</strong>municationsport, system designers can interfaceone or more controllers to a host<strong>com</strong>puter for operator controls anddata acquisition. The CPC400 offersPID, cascade, ratio and differentialcontrol strategies. Process variableretransmit and remote analog setpoint can be used to integrate theCPC400 with other devices such aschart recorders.The CPC400 carries the CE markand is UL ® listed.Features and BenefitsCombines control loops withprogrammable logic• Easy integration of PID controland logic• Less time reinventing PID control• Augment closed-loop control withuser-written logic• Add custom functions to controller• Reduces installation and set uptime• Requires less panel space• Fewer parts reduces failures andincreases reliabilityFlexible, easy-to-use interfaces• Easy setup with menu guided,full-text prompts• Context-sensitive, on-screen helpsaves time• WATVIEW software minimizessetup time• Integrate with other serial devicesusing Modbus• Connect to system <strong>com</strong>ponents viaanalog I/O to retransmit processvariables and read set pointsAdvanced control utilities• Auto-tune optimizes control withminimal effort and expertise• Cascade minimizes overshootand improves control in systemswith excessive thermal lag• Ratio and differential enhancescontrol where the relationshipbetween two or more loops isparamountWatlows WATVIEW andLOGICPRO softwareapplications are ideal touse with the CPC400.See pages 180 and 275for more informationand ordering details.Modbus is a trademark of SchneiderAutomation Incorporated.330