Danfoss VLT AutomationDrive FC 300 Скачать руководство пользователя страница 43

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1-72 Start Function

Option:

Function:

[RPM]

1-75 Start Speed [Hz]

and the output

current corresponds to the setting of the start
current in

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.

[4]

Horizontal
operation

Only possible with VVC

plus

For obtaining the function described in

1-74 Start Speed [RPM]

and

1-76 Start Current

during the start delay time. The motor rotates
in the reference direction. If the reference
signal equals zero (0),

1-74 Start Speed [RPM]

ignored and the output speed equals zero (0).
The output current corresponds to the setting
of the start current in

1-76 Start Current

[5]

VVC+/Flux
clockwise

for the function described in

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

1-74 Start Speed [RPM]

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 counter-
weight and horizontal movement.

[6]

Hoist Mech.
Brake Rel

For utilizing mechanical brake control
functions,

2-24 Stop Delay

2-28 Gain Boost

Factor

. This parameter is only active when

1-01 Motor Control Principle

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

1-73 Flying Start

is enabled,

1-71 Start Delay

and

1-72 Start Function

have no function.

[2]

Enabled Always

[3]

Enabled Ref. Dir.

[4]

Enab. Always Ref.
Dir.

This parameter cannot be adjusted while motor is running.

NOTE

This function is not recommended for hoisting applications.
For power levels above 55kW, flux mode must be used to
achieve the best performance.

NOTE

To obtain the best flying start performance the advanced
motor data, parameters 1-30 through 1-35, must be correct.

1-74 Start Speed [RPM]

Range:

Function:

Application
dependent

[0 - 600
RPM]

Set a motor start speed. After the
start signal, the output speed leaps
to set value. Set the start function in

1-72 Start Function

to [3], [4] or [5],

and set a start delay time in

1-71 Start

Delay

1-75 Start Speed [Hz]

Range:

Function:

Application
dependent

[Application
dependant]

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

1-72 Start Function

to [3], [4] or [5],

and set a start delay time in

1-71 Start Delay

1-76 Start Current

Range:

Function:

0.00
A

[Application
dependant]

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

1-76 Start

Current