[?]: 4-20 ma scalling to real value

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kambiz
Posts: 120
Joined: Sat Dec 09, 2006 5:04 am
Location: Iran

[?]: 4-20 ma scalling to real value

Post by kambiz » Sat Jun 26, 2010 6:18 am

why 4ma show higher zero ?
i have transmiter flow renge 0-1000 m3/h but 4 ma show in
monitoring 200 m3/h and 20 ma show 1000 m3/h i want when 4ma
show 0 m3/h and 20ma 1000m3/h

sania
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Re: help 4-20 ma

Post by sania » Sat Jun 26, 2010 7:15 am

your analog input calibrated to range 0-20mA
you need recalibrate/reconfig your AI from 0-20 to 4-20
what your AI-modul?

P.S.if you can not change , read manual about min-max in your AI
into your programm make scalling not from 0, but from variable == 4mA

kambiz
Posts: 120
Joined: Sat Dec 09, 2006 5:04 am
Location: Iran

Re: help 4-20 ma

Post by kambiz » Sat Jun 26, 2010 7:33 am

my AI-modul is 6ES7 331-1KF01-0AB0 and calibrate 4-20 ma .

sania
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Posts: 1371
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Re: help 4-20 ma

Post by sania » Sat Jun 26, 2010 8:44 am

go to scalling into your programm
write 5530 instead 0 into scal AI & check value with 4 mA

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