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1-72 Start Function
Option:
Function:
where the start is clockwise, followed by
rotation in the reference direction.
[4]
Horizontal
operation
Only possible with VVC
plus
.
For obtaining the function described in
and
during the start delay time. The motor
rotates in the reference direction. If the
reference signal equals zero (0),
is ignored and the output speed
equals zero (0). The output current
corresponds to the setting of the start
current in
.
[5]
VVC+/Flux
clockwise
for the function described in
only. The start current is calculated
automatically. This function uses the start
speed in the start delay time only. Regardless
of the value set by the reference signal, the
output speed equals the setting of the start
speed in
.
Start speed/
current clockwise
[3] and
VVC
plus
/Flux 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.
[6]
Hoist Mech.
Brake Rel
For utilizing mechanical brake control
functions,
to
. This parameter is only active when
is set to [3]
Flux
w/ motor feedback (FC 302 only)
.
[7]
VVC+/Flux
counter-cw
1-73 Flying Start
Option:
Function:
This function makes it possible to catch
a motor which is spinning freely due to
a mains drop-out.
[0]
*
Disabled
No function
[1]
Enabled
Enables the frequency converter to
“catch” and control a spinning motor.
When
is enabled,
and
have no function.
[2]
Enabled Always
[3]
Enabled Ref. Dir.
[4]
Enab. Always
Ref. Dir.
NOTE
This parameter cannot be adjusted while motor is running.
NOTE
This function is not recommended for hoisting
applications.
For power levels above 55 kW, flux mode must be used to
achieve the best performance.
NOTE
To obtain the best flying start performance the advanced
motor data,
through
, must be correct.
1-74 Start Speed [RPM]
Range:
Function:
Size
related
*
[0 - 600
RPM]
Set a motor start speed. After the start
signal, the output speed leaps to set
value. Set the start function in
to [3], [4] or [5], and
set a start delay time in
.
1-75 Start Speed [Hz]
Range:
Function:
Size
related
*
[ 0.0 -
500.0 Hz]
This parameter can be used for hoist
applications (cone rotor). Set a motor
start speed. After the start signal, the
output speed leaps to set value. Set the
start function in
to
[3], [4] or [5], and set a start delay time
in
1-76 Start Current
Range:
Function:
0.00
A
*
[ 0.00 -
par. 1-24
A]
Some motors, e.g. cone rotor motors, need
extra current/starting speed to disengage the
rotor. To obtain this boost, set the required
current in
. Set
. Set
to [3] or
[4], and set a start delay time in
This parameter can be used for hoist
applications (cone rotor).
3.3.8 1-8* Stop Adjustments
1-80 Function at Stop
Option:
Function:
Select the frequency converter function
after a stop command or after the speed is
ramped down to the settings in
Speed for Function at Stop [RPM]
.
[0]
*
Coast
Leaves motor in free mode. The motor is
disconnected from the frequency converter.
Parameter Descriptions
VLT
®
AutomationDrive Programmming Guide
44
MG33ME02 - VLT
®
is a registered Danfoss trademark
3
3
Содержание VLT AutomationDrive FC 300 Series
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