Connect the function described in par. 1-74
Start Speed [RPM]
and par. 1-76
Start Current
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
Start Speed [RPM]
or par. 1-75
Start Speed [Hz]
and the output current
corresponds to the setting of the start current in par. 1-76
Start Current
. This function is typically
used in hoisting applications without counterweight and especially in applications with a Cone-mo-
tor, 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 par. 1-74
Start Speed [RPM]
and par. 1-76
Start Current
during the start delay time. The motor rotates in the reference direction. If the reference signal
equals zero (0), par. 1-74
Start Speed [RPM]
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
.
[5] VVC+/Flux clockwise for the function described in par. 1-74
Start Speed [RPM]
only. The start current is calculated au-
tomatically. 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 par. 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 applica-
tions with counterweight and horizontal movement.
[6] Hoist Mech. Brake Rel For utilizing mechanical brake control functions, par. 2-24
Stop Delay
to par. 2-28
Gain Boost Fac-
tor
. This parameter is only active when par. 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 par. 1-73
Flying Start
is enabled, par. 1-71
Start Delay
and par. 1-72
Start Function
have no
function.
[2] Enabled Always
This parameter cannot be adjusted while motor is running.
NB!
This function is not recommended for hoisting applications.
For power levels above 55kW, flux mode must be used to achieve the best performance.
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 par. 1-72
Start Function
to [3], [4] or [5], and set a start delay time in par. 1-71
Start
Delay
.
1-75 Start Speed [Hz]
Range: Function:
Application
dependent*
[Application dependant] This par 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 par. 1-72
Start Function
to [3],
[4] or [5], and set a start delay time in par. 1-71
Start Delay
.
FC 300 Programming Guide 3 Parameter descriptions
MG.33.M8.02 - VLT
®
is a registered Danfoss trademark
57
3
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