ABB DriveIT ACH550-01 User Manual page 356

Diagnostics displays
The drive detects error situations and reports them using:
• The green and red LED on the body of the drive.
• The status LED on the control panel (if a HVAC control panel
is attached to the drive).
• The control panel display (if a HVAC control panel is
attached to the drive).
• The Fault Word and Alarm Word parameter bits (parameters
0305 to 0309.) See "Group 03: Actual Signals" .
The form of the display depends on the severity of the error. You
can specify the severity for many errors by directing the drive to:
• Ignore the error situation.
• Report the situation as an alarm.
• Report the situation as a fault.
Red - faults
The drive signals that it has detected a severe error, or fault, by:
• Enabling the red LED on the drive (LED is either steady or
flashing).
• Setting an appropriate bit in a Fault Word parameter (0305 to
0307).
• Overriding the control panel display with the display of a fault
code.
• Stopping the motor (if it was on).
• Sets an appropriate bit in Fault Word parameter 0305-0307.
The fault code on the control panel display is temporary.
Pressing any of the following buttons removes the fault
message: MENU, ENTER, UP button or DOWN button. The
message reappears after a few seconds if the control panel is
not touched and the fault is still active.
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ACH550 User's Manual
Diagnostics and maintenance