When it comes to selecting a PLC, or Programmable Logic Controller, there are several things to keep in mind.
The attached image lists them out in more detail, but the general considerations are;
1. System Requirements
2. Environmental Requirements
3. Inputs and Outputs
4. Speed of CPU
5. Type of Communication Protocol
6. Programming Type
7. Specialty Functions
Let’s look at how a couple of these items effects PLC selection.
Case 1. You require a very fast PLC due to low I/O lag requirements, and also need it to be Class I Division II for explosion-proofing needs, your PLC availability may be severely lessened. A custom application may be required in this case, such as intrinsic barriers and cabinet purging.
Case 2. You have 100 different instruments on the system, which require safety rated I/O, but only have a small space for a PLC cabinet and all control is to be localized. Perhaps utilize an I/O Bus, such as Ethernet IP, to take advantage of Remote I/O in a local fashion.
We would be happy to work with you and develop the best case scenario for your application!
#aet #plccontrols #programming #electricalengineering #abilityengineering