Diagnostics And Troubleshooting; Diagnostic Displays; Red – Faults; Flashing Display – Alarms - ABB ACH550 series User Manual

E-Clipse Bypass Configurations for ACH550 Drives

Diagnostics and Troubleshooting

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 bypass detects error situations and reports them using:
• The green and red status LEDs on the bypass control panel
• The bypass control panel display
The form of the display depends on the severity of the error. You can specify the
severity for many errors by directing the bypass to:
• Ignore the error situation.
• Report the situation as an alarm.
• Report the situation as a fault.
Red – Faults
The bypass signals that it has detected a severe error, or fault, by:
• Enabling the red Faulted LED on the bypass (LED is either steady on or blinking).
• Overriding the control panel display with the display of a fault code.
• Stopping the motor (if it was on).
The message reappears after 30 seconds if the control panel is not touched and the
fault is still active. The Faulted LED remains active (either steady on or blinking)
even when the fault display is silenced.
Flashing Display – Alarms
For less severe errors, called alarms, the diagnostic display is advisory. For these
situations, the bypass is simply reporting that it had detected something "unusual." In
these situations, the bypass overrides the control panel display with the display of an
alarm code and/or name.
The alarm code on the display flashes over the current display. Pressing any key
silences the alarm message. The message reappears after 30 seconds if the control
panel is not touched and the alarm is still active.
Diagnostics and Troubleshooting
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