Eaton Electrical D77A user manual Cpu Dac

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Intelligent Technologies (IT.) D77A I/O Module Products

Analog Output Modules

Figure 21 illustrates the basic signal processing operation. Digital data from external sources are extracted from the QCPort and transferred to the controller’s central processor unit (CPU). The digital data from the CPU is transferred to the digital-to-analog converters (DAC). The DAC system converts the digital values to linear signals and provides them to the output terminals.

QC Port

CPU

DAC

V0

 

 

 

I0

 

 

DAC

V1

 

 

 

I1

 

 

 

C0

 

 

 

C1

 

 

 

+24V

 

 

 

P.S.

 

 

 

G

 

 

 

SCHEM-002

Figure 21: Analog Output Module Operation

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MN05002001E

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Contents Intelligent Technologies IT D77A I/O Module Products D77A-AI8D77A-AI8AQ8Page Important Notice Please Read Table of Contents List of Figures List of TablesPage Definitions and Symbols SafetyHazardous High Voltage General Safety Avis AvisoDiscrete Input Modules IntroductionAll Modules Discrete Output ModulesAnalog Output Modules Discrete Combination ModulesAnalog Input Modules Approval CertificationsD77A a Q 16 Catalog Numbering SystemSpecifications Physical DescriptionPower Requirements Dimensional DataSurge Suppression Category Description Specification Environmental SpecificationsDevice Default I/O Data Bit ByteVoltage Part Number Module SummaryType I/O Description AC Input Module Specifications Input SpecificationsCatalog Number D77A-AI8 D77A-AI16 DC Input Module Specifications Catalog Number D77A-DI8 D77A-DI16Analog Input Module Specifications D77A-NI4 Catalog Number Voltage Input Current Loop InputSee D77A-NI4 Analog Input Module Specifications on Bit Resolution Equations AC Output Module Specifications Output SpecificationsCatalog Number D77A-AQ8 D77A-AQ16 DC Output Module Specifications Catalog Number D77A-DQ8 D77A-DQ16Relay Output Module Specifications Catalog Number D77A-RQ8 D77A-RQ16Analog Output Module Specifications D77A-NI4 Catalog Number Voltage Output Current Loop OutputAnalog Output Curves for 14 Bit Resolution Combination Module Specifications Special I/O SpecificationsCatalog Number DC Sink/Source Input DC Mosfet Sink Output D77A-DI8RQ8 Catalog Number DC Sink/Source Input Relay OutputD77A-AI8AQ8 Catalog Number AC Input AC OutputD77A-AI8RQ8 Catalog Number AC Input Relay OutputTheory of Operation Out-of-box Default OperationTypical Application Function Discrete Input Module OperationDiscrete Combination Module Operation Filter Setting Total Update Time ADC CPUCPU DAC Installation Setting Group IDInstallation Without Backplane Module PreparationInstalling the Module Installation With Backplane Do not rock the module onto the DIN rail QCPort Connections Interconnects/ConnectionsPre-manufactured QCPort Interconnect Cables Configuration O PropertyField Wiring Symbol DefinitionMOV AC Input Wiring AC InputsDC Input Wiring DC InputsAnalog Input Wiring Analog InputsAC Output Wiring AC OutputsDC Output Wiring DC OutputsRelay Output Wiring Relay OutputsAnalog Output Wiring Analog OutputsCombination I/O Wiring Combination I/OStatus LED Troubleshooting and MaintenanceFault Codes State LED BehaviorRenewal Parts TroubleshootingCommunication Troubleshooting Hints Explanation of LED Duty Cycle StatesCommunication Hints Problem SolutionStatus LED Description Explanation Size Description Appendix aData Parameters Byte BitSign Bit = True = False + Configuration Parameters Mode Description Active/Passive0x8006 32774 Slave Address Timer will not decrement Publications IT. Publications and SupportAnalog Data Registers Publication DescriptionCompany Information