ACS 400 User’s Manual 33
Diagnostic Displays
When the red LED of the ACS 400 is on or blinking, a fault is active. The relevant fault message
flashes in the panel display.
When the green LED of the ACS 400 is blinking, an alarm is active. The relevant alarm message is
shown in the panel display. Alarms 1-7 arise from button operation and green LED does not blink
for them.
The alarm and fault messages disappear when MENU, ENTER or the arrow buttons of control
panel are pressed. The message will reappear after a few seconds if the keypad is not touched and
alarm or fault is still active.
Figure 24 Fault and alarm messages.
Refer to the “Diagnostics” on page 35 section for a complete list of alarms and faults.
Resetting the Drive from the Control Panel
To reset a fault when the red LED is on, press the START/STOP button.
Caution! Resetting the fault may start the drive when in remote control.
To reset a fault when the red LED is blinking, turn the power off.
Caution! Turning the power on again may start the drive immediately.
fault code alarm code
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