Danfoss VLT AQUA Drive FC 202 Programming Manual page 115

Parameter Description
DC Voltage
Output Speed rpm
Over Voltage Control Level
Par 14-11
Mains
Illustration 3.39 Controlled Ramp Down - Short Mains Failure.
Ramping down to stop followed by ramping up to reference.
DC Voltage
Output Speed rpm
Over Voltage Control Level
Par 14-11
Mains
Illustration 3.40 Controlled Ramp Down, Longer Mains Failure.
Ramping down as long as the energy in the system allows for
it, then the motor is coasted.
DC Voltage
Output Speed rpm
Over Voltage Control Level
Par 14-11
Mains
Illustration 3.41 Kinetic Back-up, Short Mains Failure.
Ride through as long as the energy in the system allows for it.
DC Voltage
Output Speed rpm
Over Voltage Control Level
Par 14-11
Mains
Illustration 3.42 Kinetic Back-up, Longer Mains Failure.
The motor is coasted as soon as the energy in the system is
too low.
14-11 Mains Voltage at Mains Fault
Range: Function:
Size [180 - This parameter defines the threshold
related 600 V] voltage at which the selected function in
*
parameter 14-10 Mains Failure should be
activated. The detection level is at a
2
factor of the value in
parameter 14-11 Mains Voltage at Mains
Fault.
14-12 Function at Mains Imbalance
Option: Function:
Operation under severe mains 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).
MG20O702
Programming Guide
Time
3.13.3 14-2* Trip Reset
Time
Parameters for configuring auto reset handling, special trip
handling and control card self test or initialisation.
Time
Time
Danfoss A/S © Rev. 2014-01-21 All rights reserved.
14-12 Function at Mains Imbalance
Option: Function:
When a severe mains imbalance is detected:
[0] Trip Select [0] Trip to trip the frequency converter.
[1] Warning Select [1] Warning to issue a warning.
[2] Disabled Select [2] Disabled for no action.
[3] Derate Select [3] Derate for derating the frequency
converter.
14-20 Reset Mode
Option: Function:
[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 Select the reset function after
tripping. Once reset, the frequency
converter 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.
Select [13] Infinite Automatic Reset for
continuous resetting after tripping.
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