gefran ADV200

ADV200 • Functions description and parameters list 121
between the motor speed and the speed reference. Line synchronisation can be achieved by connecting the
Powerlossnextratio output of the master to the Speedratiosrc 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 congured 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 PerdRiferim
alarm: to avoid this, set Par 4552SpdRefLossactivity=Ignore
During the power failure, the power supply phase loss detection system might not work properly with subse-
quent activation of the Phaseloss alarm: to avoid this, set Par 4660PhLossactivity=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
22.9.1 3400Powerlossfunction ENUM Disable 0 1 ERWZ F__
This parameter is used to enable the Powerloss function.
0 Disable
1 Enable
If set to0 the Powerloss function is disabled. The Undervoltage alarm is generated in the event of a power failure.