Hello everyone,
I am new to the board.
I am an engineer in the HVAC controls industry. My typical work involves systems with DDC controllers. On a current project, the HVAC is sort of a hybrid comfort/process for a petro-chem plant. The client is asking for PLC controllers with SIL 2 rating from AB, Siemens, Modicon or GE. I am totally unfamiliar with this type, but very familiar with the HVAC variety- Siemens, Staefa, Alerton, ALC, etc..
Can anyone tell me the major differences between PLC and DDC? I assume PLC is more robust, more industrial and capable of delivering more features, but am relatively lost when it comes to them.
Thanks for any help you cna provide.
Ed
I am new to the board.
I am an engineer in the HVAC controls industry. My typical work involves systems with DDC controllers. On a current project, the HVAC is sort of a hybrid comfort/process for a petro-chem plant. The client is asking for PLC controllers with SIL 2 rating from AB, Siemens, Modicon or GE. I am totally unfamiliar with this type, but very familiar with the HVAC variety- Siemens, Staefa, Alerton, ALC, etc..
Can anyone tell me the major differences between PLC and DDC? I assume PLC is more robust, more industrial and capable of delivering more features, but am relatively lost when it comes to them.
Thanks for any help you cna provide.
Ed