Fault Tracing; Contents Of This Chapter; Control Unit Leds; Control Panel And Panel Platform/Holder Leds - ABB ACS880-37LC-0390A-7 Hardware Manual

Fault tracing

Contents of this chapter

This chapter describes the fault tracing possibilities of the drive.

Control unit LEDs

LED Color
BATT OK Green
PWR OK Green
FAULT Red
WRITE Yellow

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.
Indication
Battery voltage of the real-time clock is OK (higher than 2.8 V).
When the LED is not lit,
• battery voltage is below 2.8 V,
• the battery is missing, or
• the control unit is not powered.
Internal voltage OK
The control program indicates that the equipment is faulty. See
the appropriate firmware manual.
Writing to SD card in progress.
Fault tracing 141
10