What Causes Loop Limit

Loop Limit means that the Active System was not able to apply the selected Loop Power to the attached Loop.
Think of a car: You push the pedal to the metal, but you are going up a hill and it can't go faster. The car knows that you would want it to go faster, but it can't.

Loop Limit is mainly caused by inductance of the loop which is determined by:

With our standard length cable you should rarely see a loop limit. With everything longer you will get a loop limit if you request 100%. This is due to regulatory limits. On longer loops it is simply not allowed to have 100% loop power.