Start Adjustments; Slip Compensation Time; Start Delay; Start Function/Flying Start - Danfoss VLT FC 51 Series Programming Manual

4. Parameter Descriptions

1-63 Slip Compensation Time

Range:
0.10 s

4.2.5. 1-7* Start Adjustments

4
Considering the need for various start functions in different applications, it is possible to select a
number of functions in this parameter group.

1-71 Start Delay

Range:
0.0 s
1-72 Start Function
Option:
[0]
[1]
[2]
1-73 Flying Start
Option:
[0]
[1]
24
[0.05 - 5.00 s]
* [0.0 - 10.0 s]
DC Hold/Delay Time
DC Brake/Delay Time Motor is energized with DC braking current (par. 2-01) during
*
Coast/Delay Time
* Disabled
Enabled
MG.02.C2.02 - VLT
Function:
Enter slip compensation reaction speed. A high value results in
slow reaction whereas a low value results in quick reaction.
If low-frequency resonance problems arise, use longer time set-
ting.
Function:
The start delay defines the time to pass from a start command
is given until the motor starts accelerating.
Setting start delay to 0.0 sec. disables
when start command is given.
Enter the time delay required before commencing acceleration.
Start Function
Par. 1-72 is active during
Function:
Motor is energized with DC holding current (par. 2-00) during
start delay time.
start delay time.
Inverter is coasted during start delay time (inverter off).
Function:
Use flying start to catch a spinning motor after eg. mains drop-
out.
This function is not suitable for hoisting applica-
tions.
Flying start is not required.
Frequency converter enabled to catch spinning motor.
NB!
When flying start is enabled par. 1-71,
lay , and par. 1-72,
tion.
® is a registered Danfoss trademark
VLT Micro Drive FC 51
Start Function
, [1-72],
Start delay time
.
Start De-
Start Function , have no func-