Recent content by mohdalharbi

for motor of pump usually there is: start (DO go to the contactor) stop (DO go to the contactor) status (DI from the relay of a contactor or from protection relay) failure (DI from the relay of a contactor or from the protection relay) there is also signal...

Field instrument we have to change after certain time even if it is working, this due that the maintenace cost after years (say 10) will increase and frequently defect will occured.I heard this time is 10 but i am not sure it is the standard.

what is IEC standards or codes used for PLC and SCADA system (Hardware and sotware standards)?

what is a toc time and what is the imprtance of it in selection of PLC system? Thanks

Matlab is using in many applications one of it is OCR ( Optical Character Recognition ). is there a built in function in matlab for this subject or demo. is there a books which discuss this matter, also an internet sites. thanks

I hope the members will write here the famous PLC manufacturers and models or types such as: 1- Siemens type: Simatic s7 PLC 2- schneider Electric - type: Modicon Quantum PLC

In control system of small plants (power or water ....etc) we will use PLC to control and monitoring Data, while in big plants we will use DCS so the control will be direct through the DCS in the main control room. I read that we can divide plant to many parts each control and monitoring with...

In control system of small plants (power or water ....etc) we will use PLC to control and monitoring Data, while in big plants we will use DCS so the control will be direct through the DCS in the main control room. I read that we can divide plant to many parts each control and monitoring with...