Connectivity package calculates an estimated application configuration load every time it is saved in the Application Configuration tool or written to IED. This functionality prevents too complex configurations from being used and possibly risking IED protection functionality.
Calculation results are divided into three different sections which are OK, Warning and Error. If the calculation result is 105% or more, the configuration is too large for the IED to handle and PCM600 prevents writing the configuration to the IED. If the configuration load is more than 100%, PCM600 gives a warning not to add functionality to the configuration. The configuration is written to the IED if the result is inside or below the warning range.
Some inaccuracy exists between the calculated load estimate and the actual load of an IED when considering all parameters. This is why PCM600 does not prevent the writing immediately when the estimated load exceeds 100%. The IED supervises its performance continuously and indicates with self-supervision warning code 2 if an actual performance risk is detected. It is recommended to verify the configuration load also with an actual IED and actual settings when exceeding the calculation result of 90% or when using GOOSE on a larger scale.