ABB ACS280 Firmware Manual page 78

78 Program features
Motor phase loss detection (parameter
The parameter selects how the drive reacts whenever a motor phase loss is
detected.
The motor phase loss detection is enabled by default and displays fault
Output phase loss
loss detection needs to be enabled or disabled based on the motor control
mode and the nominal current as follows:
• With the vector control, the motor phase loss detection is always on and
there are no operational limits.
• With the scalar control, the motor phase loss detection activates when the
motor frequency is above 10% of the motor nominal frequency. This limit
cannot be changed.
• With motors having nominal current below 1/6 of drive nominal current, the
supervision must be disabled as the drive cannot measure the motor current
accurately.
Earth (Ground) fault detection (parameter
Note that
• an earth fault in the supply cable does not activate the protection
• in a grounded supply, the protection activates within 2 milliseconds
• the protection is deactivated when the drive is stopped.
Swapped supply and motor cabling (parameter
The drive can detect if the supply and motor cables have accidentally been
swapped (for example, if the supply is connected to the motor connection of
the drive). The parameter selects if a fault is generated or not.
Stall protection (parameters
The drive protects the motor in a stall situation. It is possible to adjust the
supervision limits (current, frequency and time) and choose how the drive
reacts to a motor stall condition.
Overspeed protection (parameter
The user can set overspeed (and overfrequency) limits by specifying a margin
that is added to the currently-used maximum and minimum speed (or
frequency) limits.
Local control loss detection (parameter
The parameter selects how the drive reacts to a control panel or PC tool
communication break.
whenever the drive detects a phase loss. The motor phase
31.24
...
31.30
31.19
)
31.20
)
31.23
)
31.28
)
)
49.05
)
3381