Danfoss VLT AutomationDrive FC 300 Design Manual page 147

FC 300 Design Guide
Function:
Select passive load [0] for conveyers, fan and pump
applications. Select active load [1] for hoisting
applications. When active load [1] is selected, set
min. current at low speed (par. 1-66) to a level
which corresponds to maximum torque.
1-68 Minimum Inertia
Range:
0 - Variable Limit
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).
1-69 Maximum Inertia
Range:
0 - Variable Limit
Function:
Set the maximum moment of inertia of
the mechanical system.
1-7* Start Adjustments
"
1-71 Start Delay
Range:
0.0 - 10.0 s
Function:
Enables a delay of the starting time. The adjustable
frequency drive 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).
* default setting ( )
How to Program
*
Depending on motor data
*
Depending on motor data
*
[0]
[1]
[2]
[4]
[5]
display text [ ] value for use in communication via serial communication port
MG.33.B3.22 - VLT is a registered Danfoss trademark
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.
Select Coast/delay time [2] to release the
shaft-coasted drive during the start delay
time (inverter off).
Select Start speed/current clockwise [3] to
connect the function described in par. 1-74 and
par. 1-76 in the start delay time.
Regardless of the value applied by the reference
signal, the output speed applies the setting of the
start speed in par. 1-74 and the output current
corresponds to the setting of the start current
in par. 1-76. This function is typically used in
hoisting applications without counterweight and
especially in applications with a one-armature
motor, where the start is clockwise, followed by
rotation in the reference direction.
Select Horizontal operation [4] to obtain the
function described in par. 1-74 and par. 1-76
during the start delay time. The motor rotates in
the reference direction. If the reference signal
equals zero (0), par. 1-74 Start speed is ignored
and the output speed equals zero (0). The output
current corresponds to the setting of the start
current in par. 1-76 Start current.
plus
Select VVC /Flux clockwise [5] for the function
0.0s
described in par. 1-74 only (Start speed in
the start delay time). The start current is
automatically calculated.
This function only uses the start speed in the
start delay time. Regardless of the value set by
the reference signal, the output speed equals
the setting of the start speed in par. 1-74. Start
speed/current clockwise [3] and VVC
clockwise [5] are typically used in hoisting
applications. Start speed/current in reference
direction [4] is particularly used in applications with
counterweight and horizontal movement.
1-73 Flying Start [RPM]
Option:
*
Off (DISABLE)
On (ENABLE)
plus /Flux
[0]
[1]
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