Danfoss VLT DriveMotor FCP 106 Programming Manual page 46

Parameters
1-64 Resonance Dampening
Range:
1-65 Resonance Dampening Time Constant
Range:
0.005 s [ 0.001 - 0.05
*
4 4
s]
1-66 Min. Current at Low Speed
Range:
50 % [ 0 - 120 %] Applies to PM motors only. Increasing the
*
1-71 Start Delay
Range:
0 s [0 - 10
*
s]
1-72 Start Function
Option:
[0] DC Hold/
delay time
[2] Coast/delay
*
time
1-73 Flying Start
Option:
[0] Disabled Select [0] Disabled if this function is not required
[1] Enabled
The flying start function used for PM motors is based on
an initial speed estimation. The speed is always estimated
as the first thing after an active start signal is given.
44
Function:
increase the value of 1-64 Resonance
Dampening.
Function:
Set 1-64 Resonance Dampening and 1-65
Resonance Dampening Time Constant to
help eliminate high-frequency
resonance problems. Enter the time
constant that provides the best
dampening.
Function:
minimum current improves motor torque at
low speed, but also reduces efficiency.
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:
Motor is energised with parameter 2-00 DC
Hold/Motor Preheat Current during start
delay time.
Inverter is coasted during start delay time
(inverter off).
Function:
This function makes it possible to catch a motor
which is spinning freely due to a mains drop-out.
Flying start searches in clockwise direction only. If
not successful, a DC brake is activated. If PM motor
is selected, Parking is carried out if the speed is
below 2.5-5%, in the time set in
parameter 2-07 Parking Time.
®
VLT DriveMotor FCP 106 and FCM 106 Programming Guide
If the speed estimate comes out below 2.5%-5% of
nominal speed, the parking function is engaged (see
2-06 Parking Current and parameter 2-07 Parking Time).
Otherwise, the frequency converter catches the motor at
that speed and resumes normal operation.
Current limitations of the flying start principle used for PM
motors:
•
•
1-80 Function at Stop
Option:
[0] Coast
*
[1] DC hold /
Motor
Preheat
1-82 Min Speed for Function at Stop [Hz]
Range:
0 Hz
*
1-90 Motor Thermal Protection
Option:
[0] No protection Disables temperature monitoring.
MG03N102 - Rev. 2013-12-02
The speed range is up to 100% Nominal Speed or
the field weakening speed (which ever is lowest).
For high inertia applications (that is, where the
load inertia is more than 30 times larger than the
motor inertia).
Function:
Select the drive function after a stop command
or after the speed is ramped down to the
settings in 1-82 Min Speed for Function at Stop
[Hz]. Function at Stop.
Available selections depend on 1-10 Motor
Construction:
[0] Asynchron:
[0] coast
[1] DC-hold
[1] PM non salient:
[0] coast
Leaves motor in free mode.
Energises motor with a DC holding current
(see parameter 2-00 DC Hold/Motor Preheat
Current).
Function:
[0 - 20 Hz] Set the output frequency at which to
activate parameter 1-80 Function at Stop.
Function:
Using ETR (Electronic Thermal Relay), the
motor temperature is calculated based on
frequency, current and time. Danfoss
recommends using the ETR function, if a
thermistor is not present. The functionality is
the same for asynchronous motors and PM
motors.
NOTICE
ETR calculation is based on motor data
from group 1-2* Motor Data.