Danfoss VLT AQUA Drive FC 202 Programming Manual page 50

Parameter Description
1-62 Slip Compensation
Range:
0 % [-500 -
*
500 %]
3 3
NOTICE
Parameter 1-62 Slip Compensation does not have effect
when parameter 1-10 Motor Construction = [1] PM, non-
salient SPM.
1-63 Slip Compensation Time Constant
Range:
Size
related s]
*
NOTICE
Parameter 1-63 Slip Compensation Time Constant does not
have effect when parameter 1-10 Motor Construction = [1]
PM, non-salient SPM.
1-64 Resonance Damping
Range:
100 [0 -
% 500 %]
*
NOTICE
Parameter 1-64 Resonance Damping does not have effect
when parameter 1-10 Motor Construction = [1] PM, non-
salient SPM.
1-65 Resonance Damping Time Constant
Range:
5 ms [5 - 50
*
ms]
48
Function:
Enter the % value for slip compensation, to
compensate for tolerances in the value of
n . Slip compensation is calculated automat-
M,N
ically, i.e. on the basis of the rated motor
speed n .
M,N
Function:
[0.05 - 5 Enter the slip compensation reaction
speed. A high value results in slow
reaction, and a low value results in
quick reaction. If low-frequency
resonance problems arise, use a longer
time setting.
Function:
Enter the resonance dampening value. Set
parameter 1-64 Resonance Damping and
parameter 1-65 Resonance Damping Time
Constant to help eliminate high-frequency
resonance problems. To reduce resonance
oscillation, increase the value of
parameter 1-64 Resonance Damping.
Function:
Set parameter 1-64 Resonance Damping and
parameter 1-65 Resonance Damping Time
Constant to help eliminate high-frequency
resonance problems. Enter the time constant
that provides the best dampening.
Danfoss A/S © Rev. 2014-01-21 All rights reserved.
Programming Guide
NOTICE
Parameter 1-65 Resonance Damping Time Constant does
not have effect when parameter 1-10 Motor Construction
= [1] PM, non-salient SPM.
1-66 Min. Current at Low Speed
Range:
Size
related
*
NOTICE
Parameter 1-66 Min. Current at Low Speed does not have
affect if parameter 1-10 Motor Construction=[0]
3.3.8 1-7* Start Adjustments
1-70 PM Start Mode
Option:
[0] Rotor
Detection
[1] Parking
1-71 Start Delay
Range:
00
s 300 s]
*
1-72 Start Function
Option:
[0] DC Hold/
Motor
Preheat
[2] Coast
Function:
[ 1 - Enter the minimum motor current at low
200 %] speed.
Increasing this current improves developed
motor torque at low speed. Low speed is
here defined as speeds below 6% of the
Nominal Speed of Motor
(parameter 1-25 Motor Nominal Speed) in
+
VVC PM Control
Function:
Suitable for all applications where the motor is
known to be standing still when starting (e.g.
conveyors, pumps and non wind milling fans).
If the motor turns at a slight speed (i.e. lower
than 2-5% of the nominal speed) e.g. due to
fans with light wind milling, select [1] Parking
and adjust parameter 2-06 Parking Current and
parameter 2-07 Parking Time accordingly.
Function:
[0 - When the frequency converter receives the start
command, it delays the motor start for the
period of time specified in this parameter.
The function selected in parameter 1-80 Function
at Stop is active in the delay period.
Function:
Select the start function during start delay. This
parameter is linked to parameter 1-71 Start Delay.
Energises motor with a DC holding current
(parameter 2-00 DC Hold/Preheat Current) during
the start delay time.
Motor coasted during the start delay time
(inverter off).
Available selections depend on
parameter 1-10 Motor Construction:
[0] Asynchron:
MG20O702