Danfoss iC2 Application Manual page 168

Application Guide | iC2-Micro Frequency Converters
Selection number Selection name
0 Rotor Detection
1 Parking
3 Rotor Last Position
P 5.6.12 Sync. Motor Detection Current %
Use this parameter to adjust the amplitude of the test pulse during position detection at start. Adjust this parameter to improve the
position measurement.
Default value:
100
Parameter
146
number:
Data type:
uint16
P 5.6.13 Sync. Motor Parking Time
Use this parameter to set the duration of the Parking Current set in P 5.6.14 Sync. Motor Parking Current %, once activated.
Default value:
3.0
Parameter
207
number:
Data type:
uint16
P 5.6.14 Sync. Motor Parking Current %
Use this parameter to set current as percentage of the rated motor current, set with P 4.2.2.3 Nominal Current. Is used when [1] Parking is
selected in P 5.6.11 Sync. Motor Start Mode.
Default value:
100
Parameter
206
number:
168
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Selection description
Estimates the electrical angle of the rotor and uses that as a
starting point. This is the standard selection for automation drive
applications. If flying start detects that the motor is running at
low speed or is stopped, the drive can detect the rotor position
(the angle), and start the motor from there.
The Parking function applies DC current across the stator
winding and rotates the rotor to electrical zero position. This
selection is typically selected for pump and fan applications. If
flying start detects that the motor is running at low speed or is
stopped, the drive sends out a DC current to make the motor
park at an angle and then start the motor from.
This option takes the advantage of the last position of rotor at
stop and gives a quick start. It is only used in the situation of
controlled stop, the drive records the last position of rotor at stop
and starts the motor directly without rotor detection and angle
calculation. When in the situation of non-controlled stop and
power cycle, the drive needs to detect the rotor position. This
option can be used for fast restart application. Start may fail if the
rotor position has been changed.
Parameter type:
Unit:
Access type:
Parameter type:
Unit:
Access type:
Parameter type:
Unit:
Range (Size Related)
%
Read/Write
Range (0.1–60.0)
s
Read/Write
Range (0–150)
%
AB413939445838en-000301 / 130R1254