Danfoss FC 100 Series Operating Instructions Manual page 71

How to Programme the Frequ...
Pressing [OK], [Back] or [Cancel] will dismiss the message and
display a new message: "Press [Hand on] to start the motor.
Press [Cancel] to abort". Pressing [Hand on] starts the motor at
5 Hz in forward direction and the display shows: "Motor is
running. Check if motor rotation direction is correct. Press [Off]
to stop the motor". Pressing [Off] stops the motor and resets
par. 1-28 Motor Rotation Check. If motor rotation direction is
incorrect, two motor phase cables should be interchanged.
IMPORTANT:
Mains power must be removed before disconnecting
motor phase cables.
1-29 Automatic Motor Adaptation (AMA)
Option: Function:
The AMA function optimizes dynamic motor
performance by automatically optimizing the
advanced motor parameters par. 1-30 Stator
Resistance (Rs) to par. 1-35 Main Reactance
(Xh)) while the motor is stationary.
[0] Off No function
*
[1] Enable performs AMA of the stator resistance R
complete
rotor resistance R
AMA
reactance X
and the main reactance X
[2] Enable Performs a reduced AMA of the stator resist-
reduced AMA ance R in the system only. Select this option if
s
an LC filter is used between the frequency
converter and the motor.
Activate the AMA function by pressing [Hand on] after select-
ing [1] or [2]. See also the item Automatic Motor Adaptation in
the Design Guide. After a normal sequence, the display will
read: "Press [OK] to finish AMA". After pressing the [OK] key
the frequency converter is ready for operation.
NOTE
•
For the best adaptation of the frequency
converter, run AMA on a cold motor
•
AMA cannot be performed while the motor is
running
NOTE
Avoid generating external torque during AMA.
®
VLT HVAC Drive Operating Instructions
, the
S
, the stator leakage
r
, the rotor leakage reactance X
1 2
.
h
®
MG.11.AD.02 - VLT is a registered Danfoss trademark
NOTE
If one of the settings in par. 1-2* Motor Data is changed,
par. 1-30 Stator Resistance (Rs) to par. 1-39 Motor Poles,
the advanced motor parameters, will return to default
setting.
This parameter cannot be adjusted while the motor is
running.
NOTE
Full AMA should be run without filter only while
reduced AMA should be run with filter.
See section: Application Examples > Automatic Motor Adapta-
tion in the Design Guide.
1-71 Start Delay
Range: Function:
0.0 s [0.0 - 120.0 The function selected in par. 1-80 Function at
*
s] Stop is active in the delay period.
Enter the time delay required before
commencing acceleration.
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.
When par. 1-73 Flying Start is enabled,
par. 1-71 Start Delay has no function.
Search direction for flying start is linked to the
setting in par. 4-10 Motor Speed Direction.
Clockwise [0]: Flying start search in clockwise
direction. If not successful, a DC brake is carried
out.
Both Directions [2]: The flying start will first make a
search in the direction determined by the last
reference (direction). If not finding the speed it will
make a search in the other direction. If not success-
ful, a DC brake will be activated in the time set in
par. 2-02 DC Braking Time. Start will then take place
from 0 Hz.
[0] Disabled Select Disable [0] if this function is not required
*
[1] Enabled Select Enable [1] to enable the frequency converter
to "catch" and control a spinning motor.
1-80 Function at Stop
Option: Function:
Select the frequency converter function after a
stop command or after the speed is ramped
down to the settings in par. 1-81 Min Speed for
Function at Stop [RPM].
[0] Coast Leaves motor in free mode.
*
[1] DC Hold/ Energizes motor with a DC holding current
Motor (see par. 2-00 DC Hold/Preheat Current).
Preheat
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