[4] Kinetic back-up
[5] Kinetic back-up, trip
[6] Alarm Function: Select the function to which the frequency converter
must act when the threshold in par 14-11 has been reached.
Par 14-10 cannot be changed while motor is running.
Controlled ramp down:
The frequency converter will perform a controlled ramp down.
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.
Controlled ramp-down [1]:
After power-up the frequency converter is ready for start. Con-
trolled ramp-down and trip [2]: After power-up the frequency
converter needs a reset for starting.
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
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 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 run-
ning as long as there is energy in the system due to the moment
of inertia produced by the load.
FC 300 Programming Guide 2. How to Programme
MG.33.M2.02 - VLT
®
is a registered Danfoss trademark
173
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