need help....

ranjitcool38 · Mar 21, 2014

hi every1 i am using allen bradley micrologix 1400 PLC.
i have two analog loops to control(level and temperature) but i am stuked in interfacing both the transmitters to the PLC.
the output of transmitter is 4-20mA but i need to convert it to 0-10V so that i can give it to the PLC's input module.
so anyone can suggest me which circuit i should use to do this conversion?????

nightline · Mar 21, 2014

https://www.google.nl/search?q=4-20...JMaK0AWOyICADQ&ved=0CEAQsAQ&biw=1920&bih=1082

Ken Roach · Mar 21, 2014

Welcome to the Forum !

The best way is to use a Signal Conditioner. There are dozens of vendors of these devices and they are used extensively in automation.

http://lmgtfy.com/?q=universal+signal+conditioner+India

The cheap way is to use a precision resistor.

http://www.plctalk.net/qanda/showthread.php?t=58947

Nelliyan · Mar 21, 2014

ranjitcool38 said:
hi every1 i am using allen bradley micrologix 1400 PLC.
i have two analog loops to control(level and temperature) but i am stuked in interfacing both the transmitters to the PLC.
the output of transmitter is 4-20mA but i need to convert it to 0-10V so that i can give it to the PLC's input module.
so anyone can suggest me which circuit i should use to do this conversion?????

U can use 4 - 20 ma itself ,, if ur using AI module then there will be a dip switch in that nodule which can be used to configure as either 0-10 v or 4 - 20 ma.

C the pg no 12 in this pdf
1762-IN012C-EN-P MicroLogix 1762-IF4 Analog Input Module ...

In case of base module 500 ohm across the channel can be used ---- V = IR ,

Regards,
Nelliyan.G

need help....

ranjitcool38

Member

nightline

Member

Ken Roach

Lifetime Supporting Member + Moderator

Nelliyan

Member

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