I was wondering if someone could help me with setting up simulation for pid loops, device control, flow and level simulations on a DeltaV simulate standalone station.
I have all of the plant downloaded in, I just can't seem to get how to simulate PID's etc.
In reply to Maarten van der Waal:
Thank you for your response Mr. Maarten. I already knew about the simulate and simulate_in parameters. I just didn't know how to simulate a PID (the calculations) without real I/O as I don't have a real valve to which the out is being written.
In reply to Abhinav:
Wire an AI block to the PID block and use the AI block to simulate values into your PID block. Also hook up an AO block to the output of the PID and wire the bkcal parameter, this will allow the PID block to go into auto. You don't need to assign DST's to the AI/AO for the simulation to work.
In reply to tklatt:
You need to install simulation configuration in a separate "simulation" control module. Assign all of your control modules to the pro+ station and download. The building of simulation configuration is an art. You can do simple "Loop-backs" as a start.
To simulate a flow take the output into a scaler block (scale from 0-100 % to the 0-full scale flow units), then write that to the appropriate AI block SIM input.
For levels, instead of a scaler block use an integrator block. Subtract the flow out of the vessel from the flow in and then integrate that. You may also want to add some limiters, etc.
Temperatures are more tricky. There are several ways to simulate them. The easiest for some applications is to just use a filter and scaler function blocks in the loop-back configurations.