Bypass Faulted Led; Drive Faulted Led; Automatic Transfer; Auto Indication - ABB ACH550 series User Manual

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Bypass Faulted LED

The Bypass Faulted LED is illuminated or flashes red when the motor or bypass
protection functions have shut down the bypass. The specific nature of the fault is
indicated on the bypass control display. Refer to the Diagnostics and
Troubleshooting section of this manual for more details.
Drive Selected LED
The Drive Selected LED is illuminated green when the drive has been selected as
the power source for the motor and no drive fault is present
Bypass Selected LED
The Bypass Selected LED is illuminated or flashes green when the bypass has been
selected as the power source for the motor and no bypass fault is present.

Drive Faulted LED

The Drive Faulted LED is illuminated red when the bypass has lost its
communications link with the drive or when the motor or drive protection functions
have shut down the drive. The specific nature of the fault is indicated on the drive
control panel display. Refer to the Diagnostics and Troubleshooting section of the
ACH550 User's manual for more details.

Automatic Transfer

The Automatic Transfer indication is provided on the bypass control panel. The
bypass control display will continuously flash an alarm to indicate the system has
automatically transferred to Bypass after a Drive fault. The Bypass Selected LED
flashes green when the system has automatically transferred to bypass operation.
The bypass event log will also record this event.

Auto Indication

The Auto Indication is provided on the bypass control panel default display when the
bypass control panel Auto key is pressed. Normally this indicates that the Auto Start
contact or serial communications has been selected as the means for starting and
stopping the motor in the bypass mode.
Off Indication
The Off Indication is provided on the bypass control panel default display when
bypass control panel Off key is pressed.
Hand Indication
The Hand Indication is provided on the bypass control panel default display when
the motor has been started manually in the bypass mode.
Drive Select Key
The Drive Select Key selects the drive as the power source for the motor.
Bypass Select Key
The Bypass Select Key selects the bypass as the power source for the motor.
Overview of Bypass Functionality
E-Clipse Bypass Configurations for ACH550 Drives