17.4.2 FunctionalityWhen the Test mode functionality TESTMODE is activated, all the functions in the IEDare automatically blocked. Activated TESTMODE is indicating by a flashing yellow LEDon the local HMI. It is then possible to unblock every function(s) individually from thelocal HMI to perform required tests.When leaving TESTMODE, all blockings are removed and the IED resumes normaloperation. However, if during TESTMODE operation, power is removed and laterrestored, the IED will remain in TESTMODE with the same protection functions blockedor unblocked as before the power was removed. All testing will be done with actually setand configured values within the IED. No settings will be changed, thus mistakes areavoided.Forcing of binary output signals is only possible when the IED is in test mode.17.4.3 Function blockTESTMODEINPUT ACTIVEOUTPUTSETTINGNOEVENTIEC09000219-1.vsdIEC09000219 V1 ENFigure 352: TESTMODE function block17.4.4 SignalsTable 584:TESTMODE Input signalsName Type Default DescriptionINPUT BOOLEAN 0 Sets terminal in test mode when activeTable 585:TESTMODE Output signalsName Type DescriptionACTIVE BOOLEAN IED in test mode when activeOUTPUT BOOLEAN Test input is activeSETTING BOOLEAN Test mode setting is (Enabled) or not (Disabled)NOEVENT BOOLEAN Event disabled during testmodeSection 17 1MRK 506 335-UUS ABasic IED functions758Technical manual
