Eaton Electrical D77A Introduction, All Modules, Discrete Input Modules, Discrete Output Modules

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

Introduction

Description

Cutler-Hammer®Intelligent Technologies (IT.) D77A I/O Modules from Eaton Corporation® are part of the IT. family of products that are best by design. These modules are designed and built for industrial applications with standard features including removable locking terminal blocks and connectivity to IT. motor control. The size and features are a substantive engineering and marketing effort, involving extensive customer input. For more information on the IT. family of products, visit our website: www.EatonElectrical.com

IT. D77A I/O discrete modules are available in 8 and 16 point densities, and in AC or DC voltage configurations. Input modules have two points per isolated common. Output modules are available in relay and solid-state configurations with two points per isolated common.

The IT. D77A I/O analog modules are available in variable voltage and current loop modules. Input modules support four analog channels and output modules support two analog channels.

D77A I/O products are designed for industrial applications, installed in a manner consistent with the guidelines outlined in this document. They are designed for Pollution Degree 2 environments (clean and dry).

Component Characteristics

This section identifies special features engineered into the Cutler-Hammer IT. D77A I/O modules.

All Modules

The IT. D77A I/O modules have the following common features:

•LED Status — When the LED is illuminated the proper ON state signal is received at the input or at the output point.

•Removable Lockable Terminals — Terminals are easily removable for I/O module replacement and are lockable so they will not vibrate loose. Terminals are available in screw type, cage clamp and insulation displacement.

•Terminal Identification — Each terminal is marked for ease of wiring and troubleshooting.

•Isolation — Each module is optically isolated between the field I/O and the backplane communication.

•Securing Tabs — Each I/O module has a locking mechanism to secure it to the DIN rail.

•Barrier Type Terminals — Each terminal has a barrier to minimize shorting of field wiring.

Discrete Input Modules

The IT. D77A Input modules have the following common feature:

•Adjustable Debounce — Each point has adjustable debounce from 1 to 65 ms.

•Sink/source — Each DC input module has back-to-back LEDs in the optical isolating circuit that can accept sinking or sourcing signals.

Discrete Output Modules

The IT. D77A I/O Output modules have the following common features:

•Configurable Safe State — Each output point has a loss of communication safe state setting.

•Configurable Power ON State — Each output point has a power-up setting.

MN05002001E

For more information visit: www.EatonElectrical.com

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Contents D77A-AI8D77A-AI8AQ8 Intelligent Technologies IT D77A I/O Module ProductsPage Important Notice Please Read Table of Contents List of Tables List of FiguresPage Safety Definitions and SymbolsHazardous High Voltage Avis Aviso General SafetyAll Modules IntroductionDiscrete Input Modules Discrete Output ModulesAnalog Input Modules Discrete Combination ModulesAnalog Output Modules Approval CertificationsCatalog Numbering System D77A a Q 16Physical Description SpecificationsDimensional Data Power RequirementsSurge Suppression Device Default I/O Data Environmental SpecificationsCategory Description Specification Bit ByteModule Summary Voltage Part NumberType I/O Description Input Specifications AC Input Module SpecificationsCatalog Number D77A-AI8 D77A-AI16 Catalog Number D77A-DI8 D77A-DI16 DC Input Module SpecificationsD77A-NI4 Catalog Number Voltage Input Current Loop Input Analog Input Module SpecificationsSee D77A-NI4 Analog Input Module Specifications on Bit Resolution Equations Output Specifications AC Output Module SpecificationsCatalog Number D77A-AQ8 D77A-AQ16 Catalog Number D77A-DQ8 D77A-DQ16 DC Output Module SpecificationsCatalog Number D77A-RQ8 D77A-RQ16 Relay Output Module SpecificationsD77A-NI4 Catalog Number Voltage Output Current Loop Output Analog Output Module SpecificationsAnalog Output Curves for 14 Bit Resolution Special I/O Specifications Combination Module SpecificationsCatalog Number DC Sink/Source Input DC Mosfet Sink Output Catalog Number DC Sink/Source Input Relay Output D77A-DI8RQ8Catalog Number AC Input AC Output D77A-AI8AQ8Catalog Number AC Input Relay Output D77A-AI8RQ8Out-of-box Default Operation Theory of OperationTypical Application Discrete Input Module Operation FunctionDiscrete Combination Module Operation ADC CPU Filter Setting Total Update TimeCPU DAC Setting Group ID InstallationModule Preparation Installation Without BackplaneInstalling the Module Installation With Backplane Do not rock the module onto the DIN rail Interconnects/Connections QCPort ConnectionsPre-manufactured QCPort Interconnect Cables O Property ConfigurationSymbol Definition Field WiringMOV AC Inputs AC Input WiringDC Inputs DC Input WiringAnalog Inputs Analog Input WiringAC Outputs AC Output WiringDC Outputs DC Output WiringRelay Outputs Relay Output WiringAnalog Outputs Analog Output WiringCombination I/O Combination I/O WiringFault Codes Troubleshooting and MaintenanceStatus LED State LED BehaviorCommunication Troubleshooting Hints TroubleshootingRenewal Parts Explanation of LED Duty Cycle StatesProblem Solution Communication HintsStatus LED Description Explanation Data Parameters Appendix aSize Description Byte BitSign Bit = True = False + Mode Description Active/Passive Configuration Parameters0x8006 32774 Slave Address Timer will not decrement Analog Data Registers IT. Publications and SupportPublications Publication DescriptionCompany Information
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