PID Auto control

[dahmanishelly]

I would like to know how to make a PID control the output to two pumps based on a Level transmitter from the tank.

 

[dahmanishelly]

I dont know know how to put my screen shot pics ???

 

[Mickey]

I dont know know how to put my screen shot pics ???

http://www.plctalk.net/movies/display-pictures.html

Also tell the forum what PLC you are using. Are the pumps controlled by VFDs, speed control by way of an anaqlog signal? The more info the better the help.

 

[dahmanishelly]

AB CompactLogix L32E Processor
RSLogix 5000 Version 20
Tank 100 is filled with liquid, a level transmitter LT-120 is installed on Tank 100 and its used as the sensor in the control loop.The Plc will send a 4-20mA signal to the pump to adjust the speed based on the level sensed by LT-120. High and Low set points will be used to control Pump 110.
Pump 110 has HOA(Hand-Off-Auto), I need to create a PID controllers to control the output to the pump based on the level set point. The level set point will initially be set to 50 but must be adjusable from an HMI. The speed of the pump will be controlled to maintain a level set point in the tank.
I already create pump110 Logic, PID and I scaled LT120 but in some how its not making the pump work in auto??
Any suggestions

 

[dahmanishelly]

http://www.plctalk.net/movies/display-pictures.html

Also tell the forum what PLC you are using. Are the pumps controlled by VFDs, speed control by way of an anaqlog signal? The more info the better the help.

I did