hi,

I want to control my electrical motor valve with slow operation and 4-20mA, in such a way that the opening and closured is between 0 to 100%, could you help me with the programme? and have the clear idea?

thank you in advance for your help.

kind regards

ixo65

Just only a little bit of information.
How do you imagine the control? Compare setpoint / actual value? Or otherwise?
What kind of valve is that?
Write the manufacturer and the exact type.

 hi,

I want to compare the data taken from a sensor and given a command to open or close the motorized valve, so I think it's  the actual value.

I want to Compares the value of the sensor of temperature  with the current value,

for example : if temp= 15°c open valve for 40%. 

Kind of valve: Butterfly valve

Actuator: POSI Rang

control in 4-20 mA Mode

page in Documentation Technique : 22

best Regards

ixo65

Which temperature values should be assigned to the 0% and the 100% position?
0% =? ° C?
100% =? ° C?

 100%=38°C

  0%= 10°C  

ixo65

For the attached example, I have assumed an external transmitter with 0-10V for a measuring range from 0 to 100 °C.
Between an actual temperature of 10 °C to 38 °C outputet the LOGO! an linear control signal from 0 to 100 %.

 Hi,

thank's for the programme Control, my external transmitter is with 4-20mA but it's not problem, I will edit this.

thank's for your attention.

best regard's

ixo65

For the attached example, I have assumed an external transmitter with 0-10V for a measuring range from 0 to 100 °C.
Between an actual temperature of 10 °C to 38 °C outputet the LOGO! an linear control signal from 0 to 100 %.

 hi, 

I can not open the project with tia portal V15.

can you help me 

Closed cause question posted twice.

The second thread with the subject control electrical motor valve with plc is published within the conference STEP 7 (TIA Portal).

Best regards,