LEDs and other status indicators￭ Control panel and panel platform/holder LEDsThe ACX-AP-x control panel has a status LED. The control panel mounting platform orholder has two status LEDs. For their indications, see the following table.IndicationLEDLocationThe unit is functioning normally.Continuous greenControl panelData is transferred between the PC and the unit through the USBconnection of the control panel.Flickering greenThere is an active warning in the unit.Blinking greenThere is an active fault in the unit.Continuous redThere is a fault that requires the stopping and restarting of thedrive/converter/inverter.Blinking redThe Bluetooth interface is enabled, in discoverable mode, andready for pairing.Blinking blue (ACS-AP-W only)Data is being transferred through the Bluetooth interface of thecontrol panel.Flickering blue(ACS-AP-W only)There is an active fault in the unit.RedControl panelmounting platform orholder (with the con-trol panel removed)Power supply for the control unit is OK.Green￭ R8i module LEDsFrame R8i modules have three LEDs. For their indications, see the following table.IndicationLEDLocationThere is an active fault in the module.FAULT(continuous red)R8i moduleThe module is ready for use.ENABLE / STO(continuous green)XSTO connectors are de-energized.ENABLE / STO(continuous yellow)Supply voltage of the internal circuit boards is OK (> 21 V).POWER OK(continuous green)Reduced runA “reduced run” function is available for inverter units consisting of parallel-connected invertermodules. The function makes it possible to continue operation with limited current even ifone (or more) module is out of service, for example, because of maintenance work. Inprinciple, reduced run is possible with only one module, but the physical requirements ofoperating the motor still apply; for example, the modules remaining in use must be able toprovide the motor with enough magnetizing current.The wiring accessories needed during the procedure are available from ABB.198 Maintenance
