Ecostruxure Machine Expert M241 PID Auto Tuning

[KarimSoliman]

Hello everyone,

I'm currently working on a project that adjusts the speed of a water pump based on the outlet pressure. I plan to use a PID controller for this purpose. However, I couldn't find any auto-tuning functionality within the project libraries. Manually tuning the PID parameters on-site would be quite time-consuming, so I'm looking for a way to implement auto-tuning using the PLC. Has anyone tackled something similar or have suggestions on how to approach this?

[BevanWeiss]

Have you seen the FAQ here?
https://www.se.com/in/en/faqs/FA309271/

I assume that this SoMachine functionality here was brought forward in the renaming to 'EcoStruxure Machine Expert'..

If there's additional loop complexity (i.e. variable number of pumps etc), then I've often found that auto-tuning can be problematic, and you really need to have some knowledge of how the PID does its magic (i.e. understanding the Proportional / Integral / Derivative terms, however they're calculated, and what things contribute to overall loop gain, and loop response).

[KarimSoliman]

I think this article is related to machine expert basic, i was wondering if there is auto tuning mode like this mentioned in the article but with machine expert.

[Bastian_Schmitz]

There is a autotune function for PID heating control integrated. 

https://product-help.schneider-electric.com/Machine%20Expert/V1.2/en/comtb/comtb/Function_Blocks/Fun... 

An other autotune is not integrated. With ESME Basic and ESME HVAC you will get an autotune function.