ATR421 4-20mA
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- Posts: 3
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ATR421 4-20mA
Hi, im have atr421-12abc-t and plc siemens 314c-2dp. I had connected pt100 to analog input of plc and i want to show the value of pt 100 in atr421. I already set the sensor type in atr421 to 4.20mA and connected atr421 to analog output of plc. But the atr421 show the error 5. So how can i fix that error? Thank you so much!
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- Moderatore
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Re: ATR421 4-20mA
Good morning,
In which PIN of the ATR421 did you connect the analog output of the PLC?
Best Regards
In which PIN of the ATR421 did you connect the analog output of the PLC?
Best Regards
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- Posts: 3
- Joined: 28/02/2022, 8:10
Re: ATR421 4-20mA
Thank for your reply. I connect pin 11 and 12 of atr421 to analog output of plc.Pixsys tecnico 6 wrote:Good morning,
In which PIN of the ATR421 did you connect the analog output of the PLC?
Best Regards
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- Moderatore
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Re: ATR421 4-20mA
Okay, it's correct.
Have you checked with a tester to see if there is current from the PLC analog output?
Best Regards
Have you checked with a tester to see if there is current from the PLC analog output?
Best Regards
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- Posts: 3
- Joined: 28/02/2022, 8:10
Re: ATR421 4-20mA
Yes i checked with a tester there's current output from plc.Pixsys tecnico 6 wrote:Okay, it's correct.
Have you checked with a tester to see if there is current from the PLC analog output?
Best Regards
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- Moderatore
- Posts: 1194
- Joined: 12/09/2016, 14:49
Re: ATR421 4-20mA
Good morning,
The only setting you will need to do in the ATR421 is the following:
- Par.2 [SEn.1] > "4-20" Analogue input configuration
- Par.4 [Lol.i.] > AI1 lower limit range, only for linear.
- Par.5 [uP.L.I] > AI1 upper limit range, only for linear.
By setting these parameters and connecting the analogue output of the PLC to the input of the ATR421 you should read the 4-20ma signal.
If you still can’t read the 4-20ma signal, can you send me a data sheet or PLC model? Thank you
Best Regards
The only setting you will need to do in the ATR421 is the following:
- Par.2 [SEn.1] > "4-20" Analogue input configuration
- Par.4 [Lol.i.] > AI1 lower limit range, only for linear.
- Par.5 [uP.L.I] > AI1 upper limit range, only for linear.
By setting these parameters and connecting the analogue output of the PLC to the input of the ATR421 you should read the 4-20ma signal.
If you still can’t read the 4-20ma signal, can you send me a data sheet or PLC model? Thank you
Best Regards