Danfoss VLT AutomationDrive FC 300 Design Manual page 147

FC 300 Design Guide
1-64 Resonance Dampening
Range:
0 - 500 %
Function:
Setting par. 1-64 and par. 1-65 can eliminate
high-frequency resonance problems. For
less resonance oscillation, the value of par.
1-64 must be increased.
1-65 Resonance Dampening Time Constant
Range:
5 - 50 msec.
Function:
Setting par. 1-64 and par. 1-65 can eliminate
high-frequency resonance problems. Choose the
time constant that provides the best dampening.
1-66 Min. Current at Low Speed
Range:
0 - Variable Limit %
Function:
Is enabled when par. 1-00 = SPEED OPEN
LOOP only. The drive runs with constant current
through motor below 10 Hz.
When speed is above 10 Hz, the motor flux model in
the drive controls the motor. Par. 4-16 and / or par.
4-17 automatically adjusts par. 1-66. The parameter
with the highest value adjusts par. 1-66. The current
setting in par. 1-66 is composed of the torque
generating current and the magnetizing current.
Example: Par. 4-16 Torque Limit for Motor
Mode is set to 100% and par. 4-17 Torque
Limit for Generating Mode is set to 60%.
Par. 1-66 automatically sets to about 127%,
depending on the motor size.
This parameter is only available in FC 302.
1-67 Load Type
Option:
*
Passive load
Active load
Function:
Select passive load [0] for conveyers, fan and pump
applications. Select active load [1] for hoisting
application. When active load [1] is selected, set
min. current at low speed (par. 1-66) to a level
which corresponds to maximum torque.
This parameter is only available in FC 302.
default setting ( )
*
How to Programme
*
*
5 msec.
*
[0]
[1]
display text [ ] value for use in communication via serial communication port
MG.33.B4.02 - VLT is a registered Danfoss trademark
1-68 Minimum Inertia
Range:
0 - Variable Limit
100%
Function:
Set the minimum moment of inertia of the
mechanical system.
Par. 1-68 and par. 1-69 are used for
pre-adjustment of the Proportional Gain in
the speed control (par. 7-02).
This parameter is only available in FC 302.
1-69 Maximum Inertia
Range:
0 - Variable Limit
Function:
Set the maximum moment of inertia of
the mechanical system.
This parameter is only available in FC 302.
100%
1-7* Start Adjustments
"
Parameters for setting special start fea-
tures for the motor.
1-71 Start Delay
Range:
0.0 - 10.0 s
Function:
Enables a delay of the starting time. The
frequency converter begins with the start function
selected in par. 1-72. Set the start delay time
until acceleration is to begin.
1-72 Start Function
Option:
DC hold/delay time
DC Brake/delay time
*
Coast/delay time
Start speed/ current clockwise operation [3]
Horizontal operation
VVC plus /Flux clockwise
Function:
Selects the start function during start
delay (par. 1-71).
Select DC hold/delay time [0] to energize
the motor with a DC holding current (par.
2-00) in the start delay time.
Select DC brake/delay time [1] to energize
the motor with a DC braking current (par.
2-01) during start delay time.
*
Depending on motor data
*
Depending on motor data
*
[0]
[1]
[2]
[4]
[5]
0.0s
147