Danfoss VLT AutomationDrive FC 300 Programming Manual page 197

3 Parameter descriptions
3
196
1. The power is back before the energy from DC /moment of inertia from load is too low. The
frequency converter will perform a controlled ramp down when par. 14-11
at Mains Fault level has been reached.
2. The frequency converter will perform a controlled ramp down as long as energy in the DC
link is present. After this point the motor will be coasted.
Kinetic back-up:
The frequency converter will perform a Kinetic back-up. If par. 2-10
brake [2] , the ramp will follow the Over Voltage Ramping. If par. 2-10
Brake the ramp will follow the setting in par. 3-81
Kinetic Back-up [4]: The frequency converter will keep on running as long as there is energy in the
system due to the moment of inertia produced by the load.
Kinetic Back-up [5]: The frequency converter will ride through on speed as long as the energy is
present from moment of inertia from the load. If the DC voltage goes below par. 14-11
at Mains Fault the frequency converter will perform a trip.
®
MG.33.M8.02 - VLT is a registered Danfoss trademark
FC 300 Programming Guide
Mains Voltage
Brake Function Off
is
Brake Function is [1]
Quick Stop Ramp Time .
Mains Voltage
AC
[0] or
Resistor