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W A T L O WTemperatureControllersCPC400The Watlow CPC400 controllersprovide performance and flexibilityin a <strong>com</strong>pact design and integratefull-featured closed-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 applications. TheCPC400 supports thermocouples,RTDs, linear voltage, current andfrequency. Built-in diagnosticsautomatically detect sensor failuresincluding open, shorted andreversed conditions. I/O can also beutilized for closed-loop control,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 setuptime• 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 isparamountSpecificationsOperator Interface• 32-character vacuum florescentdisplay• Eight-key keypad to accessguided menus and prompts, setvalues and view channel displays• Controller’s configuration can beloaded through the standardserial port• Built-in context sensitive helpNoise Rejection• 120dB at 60HzTemperature Coefficient• 40ppm/°CProgrammable Logic• Programming languages: LadderLogic, Sequential Function Chart,Function Block Diagram• Memory: 64k flash (nonvolatile)• Logic programs run concurrentlywith closed loop control• Read/write access: controller I/Oand closed loop controlparametersWatlows WATVIEW andLOGICPRO softwareapplications are ideal touse with the CPC400.See pages 180 and 275for more informationand ordering details.ExtrusionTemperature Controllers249