Pay in installments of $73.50 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 17 - Jul 22
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Schneider 140SAI94000S Analog Safety Input ModuleDescrio O Schneider Electric 140SAI94000S um mdulo de entrada de segurana analgica de alta preciso pertencente Modicon Quantum plataforma de automao. Este mdulo foi projetado especificamente para aplicaes de segurana funcional, fornecendo uma interface confivel para monitoramento de variveis crticas de processo. Certificado pela TV Rheinland para uso em ambientes SIL2, garante alta integridade na aquisio de dados em sistemas industriais relacionados
Descrição
O Schneider Electric 140SAI94000S é um módulo de entrada de segurança analógica de alta precisão pertencente à Modicon Quantum plataforma de automação. Este módulo foi projetado especificamente para aplicações de segurança funcional, fornecendo uma interface confiável para monitoramento de variáveis críticas de processo. Certificado pela TÜV Rheinland para uso em ambientes SIL2, garante alta integridade na aquisição de dados em sistemas industriais relacionados à segurança.
Especificações
-
Produtos: Plataforma de automação Modicon Quantum
-
Canais de entrada: 8 entradas de segurança analógicas individuais
-
Resolução de entrada: 16 bits para medições de alta precisão
- Faixa de medição: Escala linear de 0 a 25 mA
- Entrada máxima: 35 mA máximo absoluto
-
Impedância de entrada: 287 Ohm
-
Tempo de atualização: 15 ms para processamento rápido de sinais
-
Erro de precisão: +/- 0.3% (típico) a +/- 0.35% da escala completa
-
Tensão de isolamento: 1500 V CA por 60 segundos (canais para o barramento)
- Requisito atual do ônibus: 400 mA
- Certificação de segurança: TÜV Rheinland (SIL2), UL, CSA HazLoc e marcação CE
Diferenciais
- Integridade de segurança: Projetado e certificado para atender aos padrões SIL2, tornando-o adequado para desligamento de emergência e sistemas de monitoramento crítico.
-
Diagnóstico Integral: Possui um conjunto de LEDs dedicado, incluindo 8 LEDs verdes para indicar o status e 8 LEDs vermelhos para falhas internas do sistema de canais.
-
Filtragem de sinal: Utiliza um filtro passa-baixa de polo único (3 dB a 15 Hz) para garantir leituras estáveis em ambientes industriais com ruído elétrico.
- Isolamento robusto: Fornece isolamento de 500 V CA entre os canais para evitar interferências e proteger os circuitos internos contra surtos no lado do campo.
-
Monitoramento em tempo real: Suporta um requisito de endereçamento de 13 palavras de entrada, permitindo a transmissão detalhada de dados para a CPU Quantum.
- Detecção de falha: Capaz de detectar falhas de "sobrecarga" e problemas no circuito externo, indicados imediatamente pelo LED vermelho "F" local.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 21 reviews
Sort
Product Reviews
★★★★★ 4
Disturbing Questions
"Racism became an essential, if unacknowledged, ingredient of the republican ideology that enabled Virginians to lead the nation." writes Edmund S. Morgan in 1975, and ends this book with the rhetorical question: "Is America still colonial Virginia writ large?"
These are deeply disturbing questions - questions one is compelled to ponder as one reads this lucid and dispassionate presentation of the how primitive accumulation in Virginia at the beginning of the 17th century was replaced a century later by an orderly and opulent society based on slavery. The answer to such questions is not made easy by the realisation that the only other successful republican experiment - the Athenian democracy - blossomed too on a bed of slavery.
Do these questions matter today? Have we not moved on from racism? I'm afraid not. Again the voice of Morgan: "In the republican way of thinking, zeal for liberty and equality could go hand in hand with contempt for the poor and plans for enslaving them." Sounds eerily familiar? Just as today's language used to describe terrorist threats is redolent of the rhetoric that once surrounded the lynching of black bodies. Racism (albeit globalised) is re-visiting the land today, and so are republican virtues and values.
The book is long, and in some ways, too detailed. Morgan delights in the telling particular, and at times one wishes he would not linger on some specifics. But this has a purpose. He wants to show the imperceptible and surreptitious mechanisms by which a society acquires its ugly and immoral traits until they become so natural as to be invisible. Step by step, event by event, law by law a construction emerges that would have horrified its founders. Yet, at the time, it seamed the logical, and the right thing to do.
A strong point in Morgan's narrative is the links he highlights between the developments in Virginia and the Britain's commercial interests, migration policies, population growth and control, state revenue, and political history or thought. One can better appreciate the import of Virginia for Britain and the mother country's fixation and fascination for the North American colonies.
Brash and brutal, Virginian slavery stood openly as godmother at the foundation of the American Republic. Other aspects of slavery also contributed significantly - but as they were indirect, they remained veiled and are hardly recognised even today. New England benefited greatly from its cod trade to the Caribbean, where the product that was found to be unfit for European markets was fed to the slaves, thus freeing up land that otherwise would have been used to sustain them. When will we get a total picture of slavery's import for America's economic foundations?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 8, 2003
★★★★★ 5
how a country could develop a "national character" founded on the love of liberty while simultaneously importing thousands and t
Format: Paperback
This book lays out hte paradox, how a country could develop a "national character" founded on the love of liberty while simultaneously importing thousands and thousands of bondsmen to provided the "free people" with the necessities of life: i.e., why slavery was necessary to support the kind of freedom the white folk wanted to become accustomed to.... and implicitly, why the industrial revolution finally changed the hearts and minds of enough Americans to make slavery seem unnecessary and therefore, if was no longer a necessary evil, why it had to be overthrown.
Morgan writes objectively -- but his feelings are always detectable through his writing style, which is perhaps the best academic English to be found anywhere. I found it gripping. The book was published in 1972, and has doubtless been corrected by many subsequent researchers in some of its particulars -- but it was the fountainhead for a new way of understanding American history that young people all have learned about in high school, but which many baby-boomers have never seriously encountered.
Reading it accomplished a MAJOR retrofit in my sense of how the USA got to be the way it is today. Not to put too fine a point on it, the Tea Party and many trump supporters seem to adhere to the values of the original American Republicans [and to think that Black folk should be pushed back to a place where their feelings don't matter], and to long for a return to the status quo ante -- with ante referring to a time long LONG ago
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 15, 2016
★★★★★ 5
U.S. American Genesis
Format: Kindle
Kindle edition worked well. Very interesting and insightful read by a first rate historian. Tells the story of how our ancestors transitioned from Englishmen to Americans. A book well worth taking the time to read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2022
★★★★★ 5
History at its best
This comprehensive history of early Virginia persuasively argues that slavery and racism contributed to the American notions of freedom and democracy for those not enslaved. Although first published in 1975, one would never guess that just from reading it. Morgan's argument emerges from such a careful reading and analysis of primary sources that it remains as important today as it was a quarter century ago. The book also provides valuable insights into many subjects other than slavery, including economic and political relations between Virginia and England, early interactions with Native Americans, and changing colonial and British notions of labor and class. Highly recommended on any of these issues.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2007
★★★★★ 5
Fasten your seat belt!
Format: Paperback
The eye-opening journey this non-fiction book offers is not fun, if you are any kind of human being at all. The historical detail and background information is great. The organization makes it easy to understand the complex and entangled events that were happening then and which molded colonial Virginian society, which in turn we inherited. Highest quality scholarship. Dreadful and stomach-turning subject matter. I wish I read this years ago.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2019