WAGO I/O SYSTEM 750 XTR Device Description 21750-606/040-000 Power Supply 24 VDC XTR for Ex i XTR ModulesManualVersion 2.0.03.3 Display ElementsFigure 5: Display ElementsTable 6: Legend for Figure “Display Elements”Designation LED State FunctionPower supply status– Input A Off No power supply at the infeed inputGreen Power supply is applied at the infeed inputPower supply status– Output BGreen Power supply applied to the power jumpercontacts.Red Faulty or no power supply at the powerjumper contacts *)*) Fault description: see Section “Process Image”3.4 Operating ElementsThe I/O module 750-606/040-000 has no operating elements.