92 ADV100 • Functions description and parameters list
output of the master to the Speedratiosrc input (selection list L_VREF) of the slave drives. The master => slave
connection can be achieved via analog signals or eldbus.
To ensure correct operation of the Powerloss function, the following alarms must be congured as described below:
Since the speed reference and current limit are controlled internally by the Powerloss function, a difference could
occur between the speed reference and motor speed with subsequent activation of the PerdRiferim alarm: to avoid
this, set Par 4552SpdRefLossactivity=Ignore
During the power failure, the power supply phase loss detection system might not work properly with subsequent
activation of the Phaseloss alarm: to avoid this, set Par 4660PhLossactivity=Ignore.
Drv enable
Power supply
Vdc
Speed ref
Speed
Speed ref
Speed
Detection possible when the external sensor detects
that the mains supply has been restored
The drive switches itself off if the power supply is not restored
The mains supply is restored while the function is enabled
Powerloss
Next active
Powerloss
Ramp down
Powerloss
Next ratio
PowerLoss_01. vsd
Powerloss
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.6.1 3400 Powerlossfunction ENUM Disable 0 1 ERWZ F__
This parameter is used to enable the Powerloss function.
0 Disable
1 Enable
If set to0 the Powerloss function is disabled. The Sottotensione alarm is generated in the event of a power failure.
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