Xylem IM167 R8 Aquavar CPC (Centrifugal Pump Control) - Manual (Page 115)

115
FAULTS/ALARMS
Warning! Do not attempt any measurement, parts replacement or other service
procedure not described in this manual. Such action will void the warranty, may
endanger correct operation, and increase downtime and expense.
Warning! All electrical installation and maintenance work described in this chapter
should only be undertaken by qualified service personnel. The Safety instructions on
the first pages of this manual must be followed.
Diagnostic 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 control panel is attached to the drive).
• The control panel display (if a control panel is attached to the drive).
• The Fault Word and Alarm Word parameter bits (parameters 0310 to 0311).
See “Group 03: FB Status Words” on page 50 for the bit definitions.
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 on or blinking).
• 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).
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 reap-
pears after a few seconds if the control panel is not touched and the fault is still active.
Flashing Green – Alarms
For less severe errors, called alarms, the diagnostic display is advisory. For these situations,
the drive is simply reporting that it had detected something “unusual.”
The drive signals that it has detected an alarm, by:
• Flashing the green LED on the drive – does not apply to alarms that arise from control
panel operation errors (Alarms 1 to 7).
• Setting an appropriate bit in an Alarm Word parameter (0308 or 0309).
See “Group 03: FB Status Words” on page 50 for the bit definitions.
• Overriding the control panel display with the display of an alarm code and/or name.
The alarm messages disappears from the control panel display if/when any of the following
are pressed on the control panel: MENU, ENTER, UP button, or DOWN button.