40
NOTE
Failure to enter motor nameplate data
accurately could result in erratic or less than
optimum equipment operation. Changing
values in parameter 104,
Motor Frequency
, after
rated motor speed has been entered in
parameter 106, may automatically change the
value in parameter 106.
106
Rated Motor Speed
(MOTOR NOM. SPEED)
Value:
100 through 60000
✭
Depends on parameter 102,
Motor Power
Function:
This is where the value is set that corresponds to the rated motor
speed shown on the motor nameplate.
Description of choice:
Choose a value that corresponds to the motor nameplate data.
107
Automatic Motor Adaptation, AMA
(AUTO MOTOR ADAPT)
Value:
★
Optimization disable (NO AMA)
[0]
Automatic adaptation (RUN AMA)
[1]
Limited AMA (RUN LIMITED AMA)
[2]
Function:
Automatic Motor Adaptation (AMA) is an advanced procedure that
measures electrical characteristics of the motor. This procedure does
not cause the motor to run.
AMA optimizes the adjustment of the drive to the motor. This feature is
particularly useful when the drive-to-motor cable length is long, and
with nonstandard motors or high hp motors. Although it is not necessary
to run AMA, it is highly recommended for optimum operation and
increases the capability of the Automatic Energy Optimization function
selectable in parameter 101,
Torque Characteristics
.
For the best adjustment of the drive, it is recommended to carry out
AMA on a cold motor.
NOTE
Repeated AMA operation may lead to motor
heating that could result in an increase of stator
resistance. This can reduce test accuracy. Run
AMA only on a cool motor.
If an output LC-filter has been connected between the drive and the
motor, select
Limited AMA
. If the complete AMA procedure is desired,
remove the LC-filter, run
Automatic Adaptation
(RUN AMA), and
reinstall the filter.
NOTE
Some motors (such as motors with 6 or more
poles) may be unable to run
Automatic
Adaptation
.
Limited AMA
is a procedure which
can be effective in such cases since results
measure
motors
stator and effects of cable
length. Multiple motor applications cannot use
AMA.
The following must be noted when either AMA function is used:
-
Before running AMA, the correct nameplate data for the motor
must be entered in parameters 102 through 106.
-
Total automatic motor adaptation may take up to 10 minutes.
-
Alarms and warnings will be shown in the display if faults occur
during motor adaptation.
-
AMA can only be carried out if the rated motor current of the motor
is at least 35% of the rated output current of the drive.
Description of choice:
Select
Automatic Adaptation
if the drive is to carry out a complete
automatic motor adaptation procedure.
Select
Limited AMA
if an LC-filter has been placed between the drive
and the motor, for a motor with 6 or more poles, or if
Automatic
Adaptation
was unsuccessful. Some drives may display
Automatic
Adaptation with LC-filter
rather than
Limited AMA
. The functions are
the same.
Procedure for Automatic Motor Adaptation:
1. Set motor parameters 102 through 106 according to motor
nameplate data.
2. Connect 24 VDC from terminal 12, or from external source, to
terminal 27.
3. Select either
Automatic Adaptation
or
Limited AMA
in parameter
107,
Automatic Motor Adaptation.
4. Start drive by pressing Hand Start or connect terminal 18 (start) to
terminal 12 and press Auto Start.
To stop automatic adaptation or limited AMA prior to completion:
Press OFF/STOP key.
After a normal sequence is complete, the display reads: AMA STOP
Press RESET key. Drive is now ready for operation.
NOTE
RESET key must be pressed after AMA
is completed to save results to drive.
If there is a fault, the display reads: ALARM 22
1. Check alarms section in this manual for possible causes of alarm.
2. Press RESET key to clear fault.
If there is a warning, the display reads: WARNING (39 through 42)
1. Check warnings section in this manual for possible causes of
warning.
2. Press CHANGE DATA key and select
Continue
if AMA is to
continue despite warning, or press OFF/STOP key to stop AMA.
✭
I
ndicates factory default setting. Numbers in brackets [ ] represent selection as displayed on the serial bus.
