ABB OmniCore E10 Product Manual

6.2.1 No LEDs are lit on the controllerDescriptionNo LEDs at all are lit in the controller.Required test equipmentEquipment needed for troubleshooting:NoteEquipmentMultimeterInsulating glovesPreparationsActionMake sure that the controller is switched on.1Wait 30 s - 1 min to enable start-up sequence.Check the FlexPendant for errors and warnings.2DANGERTroubleshooting on the controller while powered on must be performed by personneltrained by ABB or by ABB field engineers.Recommended working procedureIf no LEDs are lit on the controller during start-up, use this procedure to troubleshootwhat might cause the problem.Look at the following block diagram to understand how power is connected fromincoming and forward.Block diagramAC input Power inletX0 Q0Power unitA1X1 X6L1,L2 or N,PE24V_TRUNK Computer andlogic unitA2X1 X8HMIExtensioncablePEFlexPendantxx2100001552Continues on next page168 Product manual - OmniCore E103HAC079399-001 Revision: C© Copyright 2019-2022 ABB. All rights reserved.6 Troubleshooting6.2.1 No LEDs are lit on the controller