Control unit LEDs (UCU-22…24)
IndicationLED
Battery voltage of the real-time clock is sufficient (higher than
2.5 V).
GreenBAT
Battery voltage is below 2.5 V, the battery is missing or the
control unit is not powered.
Off
Internal voltage is sufficient.GreenPWR
Control program indicates that the equipment is faulty. See
the appropriate firmware manual.
RedFAULT
Writing to microSDHC card in progress.YellowWRITE
ReservedGreenFS COMM
ReservedGreenFS STATUS
Control panel and panel platform/holder LEDs
The ACS-AP-… control panel has a status LED. The control panel mounting platform
or holder has two status LEDs. For their indications, see the following table.
IndicationLEDLocation
The unit is functioning normally.Continuous greenControl panel
Data is transferred between the PC and the unit through the
USB connection of the control panel.
Flickering green
There is an active warning in the unit.Flashing green
There is an active fault in the unit.Continuous red
There is a fault that requires the stopping and restarting of
the drive/converter/inverter.
Flashing red
The Bluetooth interface is enabled, in discoverable mode, and
ready for pairing.
Flashing blue (ACS-
AP-W only)
Data is being transferred through the Bluetooth interface of
the control panel.
Flickering blue
(ACS-AP-W only)
There is an active fault in the unit.RedControl panel
mounting platform
or holder (with the
control panel
removed)
Power supply for the control unit is OK.Green
Warning and fault messages
See the firmware manual for the descriptions, causes and remedies of the drive control
program warning and fault messages.
178 Fault tracing
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