ABB UMC100-FBP Technical Description page 56

Universal Motor Controller
UMC100-FBP
Technical Description
Parameter Description
Parameter
Dip Duration
Dip Autorestart Window
Dip Autorestart Delay
Dip Enable
Dip Autorestart Enable
Dip Level
Dip Restart Level
Depending on the duration of a voltage dip and the parameters above different reactions can be config-
ured.
The following four diagrams show different cases.
• Case a: short low voltage situation. The motor keeps running.
• Case b: longer low voltage situation with motor stop. The motor is automatically re-started after a delay.
• Case c: long low voltage situation triggering an error
• Case d: two dips within a short period of time
Dip Restart Level
Dip Level
UMC Relay Out
DIP signal at
digital input
 Case a: The low voltage situation is shorter than the 'Dip Autorestart Window' so the UMC output
relay does not open. The motor keeps running without interruption.
UMC100-FBP
Explanation
If the voltage dip is longer than this time a 'Dip Duration' error is
triggered.
If the voltage recovers within this time the motor is not switched
off - i.e. the UMC output relay is switched on.
The time delay until the motor is restarted after the end of a
voltage dip. This is done only if the parameter 'Dip Autorestart
Enable' is set.
Dip function is enabled.
Activate the automatic restart.
Voltage level indicating the begin of a voltage dip
Voltage level indicating the end of a voltate dip.
U
Undervoltage situation
Dip Autorestart Window
- 56 - FieldBusPlug / Issue: 03.2012