{"product_id":"1794-ie8-allen-bradley-flex-i-o-8-channel-analog-input-module","title":"Módulo de Entrada Analógica de 8 Canais FLEX I\/O 1794-IE8 Allen-Bradley","description":"\u003ch3\u003e\u003cstrong\u003eVisão Geral do Produto e Eficiência de E\/S Distribuída\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eO\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-IE8 (1794IE8)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eé um módulo de entrada analógica de alta densidade projetado para a plataforma\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFLEX I\/O\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e, um dos sistemas de E\/S distribuída mais bem-sucedidos da história industrial. Desenvolvido para modularidade e eficiência de espaço, este módulo oferece\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8 entradas não isoladas\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eque podem ser configuradas individualmente para sinais de tensão ou corrente. O\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-IE8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eé um componente essencial para sistemas com alta contagem de pontos em tratamento de água, processamento químico e controle HVAC, onde a montagem da E\/S próxima aos sensores de campo é necessária para reduzir custos de cabeamento. Utilizando uma base de terminais separada, o\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-IE8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epermite a \"Remoção e Inserção Sob Energia\" (RIUP), garantindo que a manutenção possa ser realizada sem desligar toda a rede de controle.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eArquitetura de Hardware e Flexibilidade de Sinal\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eO\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-IE8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ese conecta à rede (EtherNet\/IP, ControlNet ou DeviceNet) por meio de um adaptador FLEX I\/O. Seu design separa o módulo eletrônico da fiação de campo, proporcionando uma instalação limpa e de fácil manutenção.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFaixas de Entrada Configuráveis:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSuporta sinais industriais padrão, incluindo\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4 a 20 mA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ee\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0 a 20 mA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epara loops de corrente, bem como\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e+\/- 10 V\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0 a 10 V\u003c\/strong\u003e e \u003cspan\u003e0 a 5 V\u003c\/span\u003e para entradas de tensão.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConversão A\/D:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUtiliza um conversor de aproximação sucessiva de 12 bits, oferecendo uma resolução de\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1,22 uA\/contagem\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epara corrente e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2,56 mV\/contagem\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epara tensão (na faixa de 10 V).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMontagem Modular:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEncaixa facilmente em uma base de terminais\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-TB2, 1794-TB3 ou 1794-TB3S\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e, que contém os pontos de fiação e o backplane de comunicação.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFormato de Dados:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eApresenta os dados ao controlador em formato inteiro de complemento de 2 de 16 bits, facilitando a escala dentro das rotinas do Logix Designer ou RSLogix 5000.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEspecificações Técnicas\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eEspecificação\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetalhes\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModelo\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e1794-IE8\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFabricante\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAllen-Bradley \/ Rockwell Automation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNúmero de Entradas\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 entradas simples, não isoladas\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResolução\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12 bits\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eEntradas de Corrente\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 a 20 mA, 0 a 20 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eEntradas de Tensão\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e+\/- 10 V, 0 a 10 V, 0 a 5 V, 1 a 5 V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTaxa de Conversão\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e256 microssegundos para todos os canais\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCorrente Flexbus\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e20 mA @ 5 VDC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAlimentação DC Externa\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24 VDC Nominal (faixa de 10,5 a 31,2 VDC)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTemperatura de Operação\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 a 55 graus Celsius\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePeso para Envio\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e0,8 kg\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ Técnico Integrado\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eComo alternar entre os modos de tensão e corrente no 1794-IE8?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA seleção do modo é feita via a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003epalavra de configuração\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edo módulo no software do controlador. Não há jumpers físicos no módulo; você simplesmente define os bits na imagem de saída do adaptador de E\/S para especificar o tipo de sinal para cada canal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQual a vantagem de usar uma Base de Terminais (ex.: 1794-TB3) com este módulo?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA base de terminais permite que você faça a fiação dos sensores uma única vez e os deixe no lugar. Se a eletrônica do\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-IE8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efalhar, você pode remover o módulo da base e encaixar um novo sem usar nenhuma ferramenta, reduzindo drasticamente o Tempo Médio para Reparo (MTTR).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEste módulo fornece alimentação para transmissores de 2 fios?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eO módulo\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-IE8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003enão fornece alimentação para o loop. Ao usar transmissores de 2 fios, é necessário usar uma base de terminais como a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-TB3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eque possui terminais extras para distribuir a alimentação de 24 VDC aos sensores.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eProtocolos de Engenharia e Instalação\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAlinhamento da Base de Terminais:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAo instalar o módulo, alinhe as chaves na parte inferior do\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-IE8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecom as ranhuras da\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-TB3\u003c\/strong\u003e. Pressione firmemente até o mecanismo de travamento clicar. Um módulo mal encaixado pode causar \"Falhas de Conexão de E\/S\" intermitentes na rede.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProteção do Loop de Corrente:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAo configurar canais para\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4 a 20 mA\u003c\/strong\u003e, certifique-se de que a fonte de alimentação externa de 24 V seja estável. O módulo tem uma corrente máxima de entrada de\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e32 mA\u003c\/strong\u003e; ultrapassar esse valor pode danificar os resistores de precisão internos.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTerminação da Blindagem:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePara precisão analógica, use cabos blindados e termine a blindagem nos terminais de terra fornecidos na\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-TBC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eou no trilho DIN aterrado. Evite aterrar ambos os lados da blindagem para prevenir loops de terra que induzam ripple de 50\/60 Hz na conversão de 12 bits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eVantagens de Engenharia\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eO\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-IE8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edestaca-se pela sua\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ealta velocidade de processamento\u003c\/strong\u003e. Com uma taxa de conversão de\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e256 microssegundos\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epara todos os 8 canais, fornece dados quase em tempo real para loops de controle rápidos. Seu design não isolado é uma escolha econômica para sistemas onde todos os sensores compartilham um ponto de referência comum, permitindo aquisição analógica de alta densidade sem o volume ou custo dos módulos isolados. Sua compatibilidade com todas as principais redes industriais garante que ele permaneça um recurso flexível tanto em sistemas legados PLC-5\/SLC quanto em arquiteturas modernas ControlLogix.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52695193092459,"sku":"1794-IE8","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/allen-bradley-1794-ie8-flex-8-point-analog-input-module-s5wdi0m1zcf_873ae131-d7ea-4994-beaf-7a00c295ad4a.jpg?v=1766114705","url":"https:\/\/www.plcprotech.com\/pt\/products\/1794-ie8-allen-bradley-flex-i-o-8-channel-analog-input-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}