Danfoss VLT AQUA Drive FC 202 Programming Manual page 56

Parameter Description
1-55 U/f Characteristic - U
Array [6]
Range:
0 V [0.0 -
*
1000.0 V]
3 3
1-56 U/f Characteristic - F
Array [6]
Range:
0 Hz [0 -
*
1000.0 Hz]
Motor Voltage
Par 1-55 [x]
1-55[5]
1-55[4]
1-55[3]
1-55[2]
1-55[1]
1-55[0]
1-56
[0]
Illustration 3.9 U/f Characteristic
1-58 Flying Start Test Pulses Current
Range:
Size [ 0 -
related 200
*
%]
54
Function:
Enter the voltage at each frequency point to
form a U/f characteristic manually matching
the motor.
The frequency points are defined in
parameter 1-56 U/f Characteristic - F.
This parameter is an array parameter [0-5] and
is only accessible when parameter 1-01 Motor
Control Principle is set to [0] U/f.
Function:
Enter the frequency points to form a U/f
characteristic manually matching the motor.
The voltage at each point is defined in
parameter 1-55 U/f Characteristic - U.
This parameter is an array parameter [0–5]
and is only accessible when
parameter 1-01 Motor Control Principle is set
to [0] U/f.
1-56 1-56 1-56 1-56
[1] [2] [3] [4]
Output Frequency
Par 1-56 [x]
Function:
Set the magnitude of the magnetizing current
for the pulses used to detect the motor
direction. The value range and function
depend on parameter 1-10 Motor Construction:
[0] Asynchronous: [0–200%]
Reducing this value reduces the generated
torque. 100% means full nominal motor
current. In this case, the default value is 30%.
[1] PM non-salient: [0–40%]
A general setting of 20% is recommended for
PM motors. Higher values can give increased
performance. However, on motors with back
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®
VLT AQUA Drive FC 202
1-58 Flying Start Test Pulses Current
Range:
1-59 Flying Start Test Pulses Frequency
Range:
Size
related
*
1-56
[5]
Function:
EMF higher than 300 VLL (rms) at nominal
speed and high winding inductance (more
than 10 mH), a lower value is recommended to
avoid wrong speed estimation. The parameter
is active when parameter 1-73 Flying Start is
enabled.
Function:
NOTICE
[ 0 -
500 %
See description of parameter 1-70 Start
]
Mode for an overview of the relation
between the PM Flying Start
parameters.
The value range and function depend on
parameter 1-10 Motor Construction:
[0] Asynchronous: [0–500%]
Control the percentage of the frequency for
the pulses used to detect the motor direction.
Increasing this value reduces the generated
torque. In this mode, 100% means 2 times the
slip frequency.
[1] PM non-salient: [0–10%]
This parameter defines the motor speed (in %
of nominal motor speed) below which the
parking function (see parameter 2-06 Parking
Current and parameter 2-07 Parking Time)
becomes active. This parameter is only active
when parameter 1-70 Start Mode is set to [1]
Parking and only after starting the motor.
MG20OB02