I have an offset current on my analog input SM331 AI 8x12 Bit

mopS04

it normally describes an overflow, when the installation and projecting is right.

Many users have also problems in the understanding of 2-wire and 4-wire transducers.

the difference between 2-Wire and 4-wire-transducers is that the 2-wire-transducers have their power supply through the measurement-wires. Thats the reason why only 4..20mA-range can be used with it. 4-wire transducers have the powersupply seperately.

which device are you measureing from?

 Siemens SIPART POSITIONNER, position feedback 

AutoGen_6129952

 Siemens SIPART POSITIONNER, position feedback 

 which one? there are too much of it.

Does it have an own power supply?

If you don´t know, you can also try to project a 4-wire measuring.

hope this helps,

mopS04

 

AutoGen_6129952

 Siemens SIPART POSITIONNER, position feedback 

 which one? there are too much of it.

Does it have an own power supply?

If you don´t know, you can also try to project a 4-wire measuring.

hope this helps,

 its a 6DR5011 with a Iy module (option), there is only 2 wire ,it need an external PS, i followed the manual 

ok,I got the manual:  SIPART PS2 (6DR5...)

What is connected on SIPART-side?

mopS04

ok,I got the manual:  SIPART PS2 (6DR5...)

What is connected on SIPART-side?

 a WEKA cryo valve .

mopS04

oh, I mean what pins are connected on SIPART-side to the SM331?

 ah sorry !

61 and 62 for feedback

hmmm, ok...

looks everything fine.

Have you tried to change pin 61 and 62. maybe it is switched.

you can also try to test it with a resistor on the SM331. 6kOhm should work for 4mA current. If this works, you can be sure that on SM331 is everything okay and you have to search the error on SIPART side.

hope this helps,

mopS04

hmmm, ok...

looks everything fine.

Have you tried to change pin 61 and 62. maybe it is switched.

you can also try to test it with a resistor on the SM331. 6kOhm should work for 4mA current. If this works, you can be sure that on SM331 is everything okay and you have to search the error on SIPART side.

hope this helps,

 ok,i will try yhis and give a feedback.thank you

AutoGen_6129952

 

mopS04

hmmm, ok...

looks everything fine.

Have you tried to change pin 61 and 62. maybe it is switched.

you can also try to test it with a resistor on the SM331. 6kOhm should work for 4mA current. If this works, you can be sure that on SM331 is everything okay and you have to search the error on SIPART side.

hope this helps,

 ok,i will try yhis and give a feedback.thank you

 Hi,

i work with a 6kOhm on CH3 ,the display is : 64632  with DEC display config

                                                                         -904 with DEC+/- display config

CH2 i have my 2 wire form the positionner

thanks