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4 wire instrument to 2 wire analog input card

Created by: GaryA at: 8/8/2011 10:04 AM (3 Replies)

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8/8/2011 10:04 AM	Rate (0)
GaryA Posts: 3 Rating: (0)	Hi Siemens Expert, I have an analog instrument that gives out 4 - 20mA and has its own power supply, unfortunately I only have a standard 2 wire analog input card. Is it possible to wire this instrument (effectively 4 wire) to a 2 wire analog input card? Kind regards Gary
GaryA Posts: 3 Rating: (0)
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8/8/2011 10:42 AM	Rate (0)
Amit_86 Platinum Member Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272)	GaryA Hi Siemens Expert, I have an analog instrument that gives out 4 - 20mA and has its own power supply, unfortunately I only have a standard 2 wire analog input card. Is it possible to wire this instrument (effectively 4 wire) to a 2 wire analog input card? Kind regards Gary Dear Gary, Can you please mention the MLFB of Analog input Module?
	VANDE MATARAM.....
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8/8/2011 10:48 AM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365)	Hi Check section 6-3 to 6-8 of the following manual to know how do wiring of 2-wire or 4-wire transducers for different analog modules .Check the MLFB of your module and follow the wiring as illustrated. http://support.automation.siemens.com/WW/view/en/8859629 Best regards
	Last edited by: hdhosseini at: 8/8/2011 10:49 AM Demo Channel on Youtube
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8/16/2011 11:18 AM	Rate (0)
SINAMICS_TO Bronze Member Joined: 4/24/2008 Last visit: 8/2/2024 Posts: 213 Rating: (16)	When your card is parametrized for a 2 wire encoder you only need to wire the M+ from encoder to M- from the SM331.

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