Dear expert,

               CPU 1510SP-1 PN, anybody have application example for ETS room control

Hello ganga;

We must understand your process requirements if we are to provide answers and/or solutions to your problems.

I used to work with District Cooling projects, and in that context ETS had a definite meaning, Energy Transfer Systems. If your question is related to such an area, suggestions may be provided. Without more information on your part, we cannot know if this is the kind of application you need help with.

As GUWS mentioned, please clarify your question.

Hope this helps,

Daniel Chartier

dchartier

Hello ganga;

We must understand your process requirements if we are to provide answers and/or solutions to your problems.

I used to work with District Cooling projects, and in that context ETS had a definite meaning, Energy Transfer Systems. If your question is related to such an area, suggestions may be provided. Without more information on your part, we cannot know if this is the kind of application you need help with.

As GUWS mentioned, please clarify your question.

Hope this helps,

Daniel Chartier

 Dear dchartier,

               District Cooling projects, and in that context ETS had a definite meaning, Energy Transfer Systems. as you mentioned above the same. i attached my detail requiredment.

Hello ganga;

You gave us a Sequence of operations , which gives you a good starting point to design your PLC control panel, your instrumentation, and your PLC program.

At what stage are you in for this project, bidding, planning, evaluating, engineering?

Are electrical and mechanical plans already available for the ETS? Has process engineering already been done? Has the control equipment already been selected, for heat exchangers, pumps, valves... Are you responsible for the design and selection of the MCC cabinets? Is there an expected HMI or SCADA locally in the ETS, or is all information transfered only to the main central control room?

Have you already selected the family of PLCs you will be working with, it probably will be a Siemens S7 in this case, but which family remains unmentioned in the SOP. Have you started designing the PLC cabinet, including selection of the VFDs for the pumps,networks (or analog modules) for the instruments and control valves, network modules (or digital/analog signals) for the pump control (VFDs), power supplies and distribution, relays... 

The last page of the SOP is a list of basic project signals to be exchanged between the PLC and the process equipment, but it needs to be refined, at the very list each individual pump heat exchanger instrument and valve in the ETS must be identified and signals reserved for each one must be planned to prepare the PLC program.

A lot of the program will be relatively simple, communications with instruments (pressure, temperature...), the VFDs, the MCC, the BTU meter and the BMS, The most difficult aspect will be the PID control of the individual pumps, based on pressure readings, and especially the pump staging design. There are quite a few examples of these functions on the forum site, available for your use. We can discuss this as we approach these difficulties. Here are some samples of what you can find on the forum:

SINAMICS G120/G120P, CU230P-2: Pressure-Controlled Pumps

https://support.industry.siemens.com/cs/ww/en/view/43297279

Rotation of 3 pumps based on cycle time

https://support.industry.siemens.com/tf//ww/en/posts/rotation-of-3-pumps-based-on-cycle-time/201079/?page=0&pageSize=10

You must realize that I cannot simply transfer PLC programs from my past projects over to you, even for support. These belong to my client, as your program will be the property of your own client when you are ready to hand it over. But I am happy to discuss issues as they present themselves, and provide guidelines if I can. Remember that this is your project, your job, and your responsibility. 

Hope this helps,

Daniel Chartier