ABB ACS880 Firmware Manual page 116

116 Standard program features
Automatic restart
It is possible to restart the drive automatically after a short (max. 5 seconds) power
supply failure by using the Automatic restart function provided that the drive is
allowed to run for 5 seconds without the cooling fans operating.
When enabled, the function takes the following actions upon a supply failure to
enable a successful restart:
• The undervoltage fault is suppressed (but a warning is generated)
• Modulation and cooling is stopped to conserve any remaining energy
• DC circuit pre-charging is enabled.
If the DC voltage is restored before the expiration of the period defined by parameter
21.18 Auto restart time
However, if the DC voltage remains too low at that point, the drive trips on a fault,
3280 Standby timeout.
WARNING! Before you activate the function, make sure that no dangerous
situations can occur. The function restarts the drive automatically and
continues operation after a supply break.
and the start signal is still on, normal operation will continue.