Kinetic back-up:
The frequency converter will perform a Kinetic back-up. If par. 2-10 is [0] or AC brake [2]
Off
, the ramp will
follow the Over Voltage Ramping. If par. 2-10 is [1]
Resistor Brake
the ramp will follow the setting in par. 3-81
Quick stop ramp time.
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 the frequency converter will perform
a trip.
14-11 Mains Voltage at Mains Fault
Range:
Function:
342 V
*
[150 - 600 V]
This parameter defines the threshold voltage at which the selected function in par. 14-10 should be activated.
14-12 Function at Mains Imbalance
Option:
Function:
[0]
*
Trip
[1]
Warning
[2]
Disabled
When a severe mains imbalance is detected:
Select
Trip
[0] to trip the frequency converter;
Select
Warning
[1] to issue a warning; or
Select
Disabled
[2] for no action.
Operation under severe main imbalance conditions reduces the lifetime of the motor. Conditions are considered
severe if the motor is operated continuously near nominal load (e.g. a pump or fan running near full speed).
2.15.4. Trip Reset, 14-2*
Parameters for configuring auto reset handling, special trip handling and control card self test or initialisation.
2. How to Programme
FC 300 Programming Guide
144
MG.33.M3.02 - VLT
®
is a registered Danfoss trademark
2