VLT
®
8000 AQUA
Programming
104 Motor frequency, f
M,N
(MOTOR FREQUENCY)
Value:
50 Hz (50 HZ)
[50]
✭
60 Hz (60 HZ)
[60]
) Global factory setting different from North
American factory setting.
Function:
Select the rated motor frequency f
M,N
.
Description of choice:
Select a value that equals the nameplate
data on the motor.
105 Motor current, I
M,N
(MOTOR CURRENT)
Value:
0.01 - I
VLT,MAX
A
✭
Depends on the choice of motor.
Function:
The rated motor current I
M,N
forms part of the AFD
calculations of torque and motor thermal protection.
Set the motor current I
VLT,N
, taking into account
the star Y or delta
connected motor.
Description of choice:
Set a value that equals the nameplate data
on the motor.
NOTE
It is important to enter the correct value, since
this forms part of the V V C
PLUS
control feature.
106 Rated motor speed, n
M,N
(MOTOR NOM. SPEED)
Value:
100 - f
M,N
x 60 (max. 60000 rpm)
✭
Depends on parameter 102
Motor power, P
M,N
.
Function:
This sets the value that corresponds to the rated
motor speed n
M,N
, from the nameplate data.
Description of choice:
Choose a value that corresponds to the
motor nameplate data.
NOTE
It is important to set the correct value, since this
forms part of the V V C
PLUS
control feature.
The max. value equals f
M,N
x 60. f
M,N
is set
in parameter 104
Motor frequency, f
M,N
.
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 is a test algorithm
that measures the electrical motor parameters
at motor standstill. This means that AMA itself
does not supply any torque.
AMA is useful when commissioning systems, where the
user wants to optimise the adjustment of the AFD to the
motor applied. This feature is used where the factory
setting does not match requirements of the motor.
For the best adjustment of the AFD, it is recommended
to carry out AMA on a cold motor. It must be noted
that repeated AMA runs may lead to a heating of
the motor that will result in an increase of the stator
resistance R
S
. However, this is not normally critical.
It is possible via parameter 107
Automatic motor
adaptation
, AMA to choose whether a complete
automatic motor adaptation
Automatic adaptation
[1]
is to be carried out, or whether reduced automatic
motor adaptation
Limited AMA
[2] is to be made.
It is possible to carry out the reduced test if a
LC-filter has been placed between the AFD and the
motor. If a total setting is required, the LC-filter can
be removed and, after completion of the AMA, it
can be reinstalled. In
Limited AMA
[2] there is no
test of motor symmetry and of whether all motor
phases have been connected. The following must
be noted when the AMA function is used:
-
For AMA to be able to determine the motor
parameters optimally, the correct nameplate data
for the motor connected to the AFD must be
entered in parameters 102 to 106.
-
The duration of a total automatic motor adaptation
varies from a few minutes to approx. 10 minutes
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.80.A7.22 - VLT is a registered Danfoss trademark
95
Rosewood STP ST42 General (Operation and Maintenance Manual - Part 4:
Section 6.3 Manufacturers Manuals 6.3.33 Danfoss VLT Aquadrive 8000) Vendor Manual
QP Id: VM207
Active: 03/09/2013
Page 101 of 208
