ABB UMC100.3 Manual page 56

U M C 1 0 0 . 3 U N I V E R S A L M O T O R C O N T R O L L E R T E C H N I C A L D E S C R I P T I O N
56
U
Dip
Restart
Level
Dip
Level
UMC Relay Out
DIP signal at
digital input
—
Case B:
The low voltage situation takes longer than the configured 'Dip Autorestart Window' which means the UMC switches
off the relay output. But the low voltage situation is shorter than the configured 'Dip Duration' so the motor gets
started automatically after an optional restart delay time (Parameter 'Dip Autorestart Enable=On). Otherwise it
stays off
U
Dip
Restart
Level
Dip
Level
UMC Relay Out
DIP signal at
digital input
UMC Voltage
DIP Error
—
Case C:
The low voltage situation takes longer than the 'Dip Duration' time.
Therefore an error is generated as soon as the Dip duration exceeds the configured Dip duration time
Dip Autorestart Window
Undervoltage situation
DIP Duration
Undervoltage situation
Dip Duration
Dip
Auto-
restart
Delay