1-72 Start Function
Option:
Function:
start current in
. This function is typically
used in hoisting applications
without counterweight and
especially in applications with a
cone-motor where the start is
clockwise, followed by rotation in
the reference direction.
[4]
Horizontal
operation
Only possible with VVC
+
.
For obtaining the function
described in
and
during
the start delay time. The motor
rotates in the reference direction. If
the reference signal equals 0,
parameter 1-74 Start Speed [RPM]
is
ignored and the output speed
equals 0. The output current
corresponds to the setting of the
start current in
.
[5]
VVC+
clockwise
For the function described in
parameter 1-74 Start Speed [RPM]
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
parameter 1-74 Start Speed [RPM]
[3]
Start speed/current clockwise
and
[5]
VVC
+
clockwise
are typically used in
hoisting applications.
[4] Start
speed/current in reference direction
is
particularly used in applications
with counterweight and horizontal
movement.
[7]
VVC+ counter-
cw
1-73 Flying Start
Option:
Function:
NOTICE
This parameter cannot be
adjusted while the motor is
running.
This function makes it possible to
catch a motor which is spinning
freely due to a mains dropout.
1-73 Flying Start
Option:
Function:
[0]
Disabled
No function.
[1]
Enabled
Enables the frequency converter to
catch and control a spinning motor.
When
parameter 1-73 Flying Start
is
enabled,
parameter 1-71 Start Delay
and
parameter 1-72 Start Function
have no function. When
parameter 1-73 Flying Start
is
enabled,
and
parameter 1-59 Flying Start Test
Pulses Frequency
are used for
specifying the conditions for the
flying start.
[2]
Enabled
Always
[3]
Enabled Ref.
Dir.
[4]
Enab. Always
Ref. Dir.
NOTICE
To obtain the best flying start performance, the
advanced motor data,
parameter 1-30 Stator Resistance
to
parameter 1-35 Main Reactance (Xh)
, 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
parameter 1-72 Start Function
to
[3] Start speed cw
,
[4] Horizontal
operation
, or
[5] VVC
+
clockwise
, and
set a start delay time in
parameter 1-71 Start Delay
.
1-75 Start Speed [Hz]
Range:
Function:
Size
related
*
[ 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
the set value. Set the start function
in
parameter 1-72 Start Function
to
[3] Start speed cw
,
[4] Horizontal
operation
, or
[5] VVC
+
clockwise
, and
set a start delay time in
parameter 1-71 Start Delay
.
Parameter Descriptions
VLT® AutomationDrive FC 361
44
Danfoss A/S © 03/2019 All rights reserved.
MG06J202
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Summary of Contents for VLT AutomationDrive FC 361
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