Danfoss VLT AQUA Drive FC 200 Programming Manual page 112

Parameter Description
3 3
Figure 3.37 Controlled Ramp-down - Short Line Failure. Ramping
down to stop followed by ramping up to reference.
Figure 3.38 Controlled Ramp-down, Longer Line Failure.
Ramping down as long as the energy in the system allows for it,
then the motor is coasted.
Figure 3.39 Kinetic Backup, Short Line Failure.
Ride through as long as the energy in the system allows for it.
Figure 3.40 Kinetic Backup, Longer Line Failure.
The motor is coasted as soon as the energy in the system is too
low.
3-86
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VLT AQUA Drive Programming Guide
14-11 Mains Voltage at Mains Fault
Range:
Size related
14-12 Function at Mains Imbalance
Option:
[0] Trip
[1] Warning Select [1] Warning to issue a warning.
[2] Disabled Select [2] Disabled for no action.
[3] Derate
Parameters for configuring auto reset handling, special trip
handling and control card self test or initialization.
14-20 Reset Mode
Option:
[0] Manual reset
[1] Automatic reset x 1
[2] Automatic reset x 2
[3] Automatic reset x 3
[4] Automatic reset x 4
[5] Automatic reset x 5
[6] Automatic reset x 6
[7] Automatic reset x 7
[8] Automatic reset x 8
[9] Automatic reset x 9
[10] Automatic reset x 10
[11] Automatic reset x 15
[12] Automatic reset x 20
[13] Infinite auto reset
®
MG20O622 - VLT is a registered Danfoss trademark
Function:
[180 - 600 This parameter defines the threshold
*
V] voltage at which the selected function
in 14-10 Mains Failure should be
activated. The detection level is at a
2
factor of the value in 14-11 Mains
Voltage at Mains Fault.
Function:
Operating under severe line imbalance conditions
reduces the lifetime of the motor. Conditions are
considered severe if the motor operates contin-
uously near nominal load (such as when a pump or
fan runs near full speed).
When a severe line imbalance is detected:
Select [0] Trip to trip the adjustable frequency
drive.
Select [3] Derate for derating the adjustable
frequency drive.
Function:
Select the reset function after
tripping. Once reset, the adjustable
frequency drive can be restarted.
Select [0] Manual reset to perform a
reset via [Reset] or via the digital
inputs.
Select [1]-[12] Automatic reset x 1...x20
to perform between one and twenty
automatic resets after tripping.