Thank you for a great video. I have a challenge on hand I would appreciate your assistance. In resetting the the contactor from the overload state, must the machine be connected to mains power while the reset button is pressed and then the ON button pressed? I am terrified of making an mistake and causing destroying the machine. Many thanks in advance and once again for the training.
As every motor load is different the overload protection relay should have a current as well as a time setting. For example, one can have a load which has a high inertia and for that one needs a longer time setting. Or one can have a motor, which starts on a light load ( e.g. an unloaded conveyor belt) which needs a shorter time. Hence every overload should be tuned for the type of load. This can only be done with a current and time settings, hence with electronic overloads. A number of companies make such overload relays, unfortunately Eaton did not have this facility included in their newest electronic relays. back to the drawing board!
Your e-motor FLA is 22A, so OCR should be set to 22A (+ temperature compensation coefficient if OCR is located in overheated enclosure with temperature over 40deg C).
It makes not much sense, 'cause main purpose of OCR is to protect a motor against an overload, not only to indicate that overload exists. however yes you can. NO contact 97-98 should be wired to PLC input.
