Danfoss VLT AutomationDrive FC 360 Programming Manual page 43

Parameter Descriptions
1-63 Slip Compensation Time Constant
Range: Function:
0.1 s [0.05 - 5 s] 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 occur, use a
longer time setting.
1-64 Resonance Dampening
Range: Function:
100 [0 - Enter the resonance dampening value. Set
% 500 %] 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.
1-65 Resonance Dampening Time Constant
Range: Function:
0.005 s [ 0.001 - Set parameter 1-64 Resonance Dampening
*
and parameter 1-65 Resonance Dampening
0.05 s]
Time Constant to help eliminate high-
frequency resonance problems. Enter the
time constant that provides the best
dampening.
1-66 Min. Current at Low Speed
Range: Function:
50 % [ 0 - Enter the minimum motor current at low
*
120 %] speed. Increasing this current improves
motor torque at low speed.
Parameter 1-66 Min. Current at Low Speed is
enabled only for PM motor.
MG06C702
Programming Guide
4.2.8 1-7* Start Adjustments
Parameters for adjusting the motor start settings.
1-70 Start Mode
Select the PM motor start-up mode. To initialize the VVC
core for previously free-running PM motor. Active for PM motors
+
in VVC
speed).
Option:
[0] Rotor Detection Estimates the electrical angle of the rotor
*
[1] Parking
1-71 Start Delay
Range:
0 s [0.0 -
*
10.0 s]
1-72 Start Function
Option:
[0] DC Hold/
delay time
[2] Coast/delay
time
*
[3] Start speed
cw
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only if the motor is stopped (or running at very low
Function:
and uses this angle as a starting point.
This option is the standard selection for
industrial applications. If flystart detects
that the motor runs at low speed or has
stopped, the frequency converter detects
the rotor position (the angle) and starts
the motor from that position.
The parking function applies DC current
across the stator winding and rotates the
rotor to electrical 0 position. This option is
typically for pump and fan applications. If
flystart detects that the motor runs at low
speed or has stopped, the frequency
converter sends out a DC current to make
the motor park at an angle and then
starts the motor from that position.
Function:
This parameter enables a delay of the starting
time. The frequency converter begins with the
start function selected in parameter 1-72 Start
Function. Set the start delay time until
acceleration is to begin.
Function:
Select the start function during start delay.
This parameter is linked to parameter 1-71 Start
Delay.
Energizes motor with a DC hold current
(parameter 2-00 DC Hold/Motor Preheat Current)
during the start delay time.
Motor coasted during the start delay time
(inverter off).
Only possible with VVC
value applied by the reference signal, the
output speed applies the setting of the start
speed in parameter 1-75 Start Speed [Hz] and
the output current corresponds to the setting
of the start current in parameter 1-76 Start
Current. This function is typically used in
hoisting applications without counterweight
+
control
4
+
. Regardless of the
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