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using PT100 in I/O Redundant system

Created by: Faryad at: 1/13/2009 12:51 PM (1 Replies)

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1/13/2009 12:51 PM	Rate (0)
Faryad Posts: 16 Rating: (0)	Hello World, I am requested toconnect one PT100 to two respective channels of two AI modules numbered 6ES7331-7KF02-0AB0 considering the I/O Redundancy. Who can tell me wether the configuration acc. to attached file is correct or not? Thanks World Attachment PT100 Red.pdf (350 Downloads)
Faryad Posts: 16 Rating: (0)
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1/13/2009 3:43 PM	Rate (0)
Denilson Pegaia Platinum Member Joined: 9/23/2005 Last visit: 11/14/2024 Posts: 4352 Rating: (1452)	Hi, I don't look at documentation, but I think that is not possible to read resistance in redundant mode. Reason: it is not possible to read directly resistance. Iit is necessary an indirect measure by ohm lay (U=RI). So, if one module takes the responsibility to supply a voltage or current, the redundancy takes no more place. My suggestion is to use a transductor (some like Windston Bridge) to voltage.
	Denilson Pegaia Siemens Industry Sector Technical Support
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