Option Name
Description
[0]*
Rotor detection
Estimates the electrical angle of the rotor and uses this as a starting point. Standard selection for
automation applications.
[1]
Parking
The parking function applies DC current across the stator winding and rotates the rotor to electrical
0 position (typically selected for HVAC applications). Parking current and time are configured in
pa-
rameter 2-06 Parking Current
and
parameter 2-07 Parking Time
.
[2]
Rotor det. w/
parking
Combining rotor detection with the parking function.
Parameter 1-71 Start Delay
Table 122: Parameter 1-71 Start Delay
1-71 Start Delay
Default value: 0 s
Parameter type: Range, 0 - 25.5 s
Setup: All setups
Conversion index: -1
Data type: Uint8
Change during operation: True
This parameter refers to the start function selected in
parameter 1-72 Start Function
. Enter the time delay required before commenc-
ing acceleration.
Parameter 1-72 Start Function
Table 123: Parameter 1-72 Start Function
1-72 Start Function
Default value: [2] Coast/delay time
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
Select the start function during start delay. This parameter is linked to
parameter 1-71 Start Delay
.
Op-
tion
Name
Description
[0]
DC hold/
delay time
Energize the motor with a DC hold current (
parameter 2-00 DC Hold Current
) during the start delay time.
[1]
DC brake/
delay time
Energize the motor with a DC brake current (
parameter 2-01 DC Brake Current
) during the start delay time.
[2]*
Coast/delay
time
Motor coasted during the start delay time (inverter off).
[3]
Start speed
cw
Only possible with VVC+. Connect the function described in
parameter 1-74 Start Speed [RPM]
and
param-
eter 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
parameter 1-74 Start Speed [RPM]
or
parameter 1-75
Start Speed [Hz]
, and the output current corresponds to the setting of the start current in
parameter 1-76
Start Current
. This function is typically used in hoisting applications without counterweight and especial-
ly 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
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
.
[5]
VVC
+
/flux
clockwise
For the function described in
parameter 1-74 Start Speed [RPM]
only. The start current is calculated auto-
matically. 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+/Flux clockwise
are typically used in hoisting applica-
AU275636650261en-000101 / 130R0334
96 | Danfoss A/S © 2022.12
Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide
Summary of Contents for VLT AutomationDrive FC 301
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