Danfoss VLT AutomationDrive FC 361 Programming Manual page 46

Parameter Descriptions
1-72 Start Function
Option:
4 4
[4] Horizontal
operation
[5] VVC+
clockwise
[7] VVC+ counter-
cw
1-73 Flying Start
Option:
44
VLT® AutomationDrive FC 361
Function:
start current in parameter 1-76 Start
Current. 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.
+
Only possible with VVC .
For obtaining the function
described in parameter 1-74 Start
Speed [RPM] and
parameter 1-76 Start Current 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 parameter 1-76 Start
Current.
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.
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.
Danfoss A/S © 03/2019 All rights reserved.
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, parameter 1-58 Flying Start
Test Pulses Current 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
(Rs) to parameter 1-35 Main Reactance (Xh), must be
correct.
1-74 Start Speed [RPM]
Range: Function:
Size [0 - 600 Set a motor start speed. After the
related RPM] 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
set a start delay time in
parameter 1-71 Start Delay.
1-75 Start Speed [Hz]
Range: Function:
Size [ 0 - 500.0 This parameter can be used for
related Hz] 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
set a start delay time in
parameter 1-71 Start Delay.
+ clockwise, and
+
clockwise, and
MG06J202