Danfoss VLT FC 102 Programming Manual page 64

Parameter Descriptions
1-63 Slip Compensation Time Constant
Range:
Size
related
*
3 3
1-64 Resonance Dampening
Range:
Size
related
*
1-65 Resonance Dampening Time Constant
Range:
5 ms
*
62
Function:
NOTICE
[0.05 - 5 s]
Parameter 1-63 Slip Compen-
sation Time Constant has no
effect when
parameter 1-10 Motor
Construction = [1] PM, non-
salient SPM.
Enter the slip compensation
reaction speed. A high value results
in a slow reaction, and a low value
results in a quick reaction. If low-
frequency resonance problems
arise, use a longer time setting.
Function:
NOTICE
[0 - 500 %]
Parameter 1-64 Resonance
Dampening has no effect when
parameter 1-10 Motor
Construction=[1] PM, non-
salient SPM.
Enter the resonance damping value.
Set parameter 1-64 Resonance
Dampening and
parameter 1-65 Resonance
Dampening Time Constant to help
eliminate high-frequency resonance
problems. To reduce resonance
oscillation, increase the value of
parameter 1-64 Resonance
Dampening.
Function:
NOTICE
[5 - 50 ms]
Parameter 1-65 Resonance
Dampening Time Constant has
no effect when
parameter 1-10 Motor
Construction = [1] PM, non-
salient SPM.
Set parameter 1-64 Resonance
Dampening and
parameter 1-65 Resonance
Dampening Time Constant to help
eliminate high-frequency resonance
problems. Enter the time constant
that provides the best dampening.
Danfoss A/S © 10/2019 All rights reserved.
®
VLT HVAC Drive FC 102
1-66 Min. Current at Low Speed
Range:
Size
related
*
3.3.9 1-7* Start Adjustments
1-70 Start Mode
Option:
[0]
[1]
*
[2]
1-71 Start Delay
Range:
00 s
*
1-72 Start Function
Option:
Function:
NOTICE
[ 1 - 200 %]
Parameter 1-66 Min. Current at
Low Speed has no effect if
parameter 1-10 Motor
Construction = [0] Asynchron.
Enter the minimum motor current
at low speed.
Increasing this current improves
developed motor torque at low
speed. Low speed is here defined
as speeds below 6% of the nominal
motor speed (parameter 1-25 Motor
Nominal Speed) in VVC
Function:
Rotor Suitable for all applications where
Detection the motor is known to be standing
still when starting (for example
conveyors, pumps, and non-wind
milling fans).
Parking If the motor turns at a low speed
(that is lower than 2–5% of the
nominal speed), for example due to
fans with windmilling, select [1]
Parking and adjust
parameter 2-06 Parking Current and
parameter 2-07 Parking Time
accordingly.
Rotor Det. w/
Parking
Function:
[0 - 120 s] Enter the time delay between the
start command and the time when
the frequency converter supplies
the power to the motor.
This parameter is related to the
start function selected in
parameter 1-72 Start Function.
Function:
Select the start function during the
start delay. This parameter is linked
to parameter 1-71 Start Delay.
+
PM Control.
M0010001