Danfoss AKD 2800 Quick Setup Manual page 19

103 Motor voltage U
M,N
(MOTOR VOLTAGE)
Value:
For 200 V units: 50 - 999 V
For 400 V units: 50 - 999 V
Function:
This is where to set the rated motor voltage U
for either star Y or delta
Description of choice:
Select a value that corresponds to the nameplate
data on the motor, regardless of the frequency
converter's mains voltage.
104 Motor frequency f
(MOTOR FREQUENCY)
Value:
24-1000 Hz
Function:
This is where to select the rated motor frequency f
Description of choice:
Select a value that corresponds to the nameplate
data on the motor.
105 Motor current I
M,N
(MOTOR CURRENT)
Value:
0,01 - I
Depends on choice of motor
MAX
Function:
The nominal, rated current of the motor I
part of the frequency converter calculation of features
such as torque and motor thermal protection.
Description of choice:
Set a value that corresponds to the nameplate data
on the motor. Set the motor current I
into account whether the motor is star-connected
Y or delta-connected .
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.28.H2.02 -
230 V
400 V
M,N
.
M,N
50 Hz
.
M,N
forms
M,N
taking
M,N
AKD 2800
106 Rated motor speed
(MOTOR NOM. SPEED)
Value:
100 - f x 60 (max. 60000 rpm)
M,N
Depends on parameter 102 Motor power, P
Function:
This is where to set the value that corresponds
to the rated motor speed n
from the nameplate data.
Description of choice:
Select a value that corresponds to the nameplate
data on the motor.
NB!:
The max. value equals f
in parameter 104 Motor frequency, f
107 Automatic motor tuning, AMT
(AUTO MOTOR TUN.)
Value:
Optimisation off (AMT OFF)
Optimisation on (AMT START)
NB!:
AMT is not possible on AKD 2880-82.
Function:
Automatic motor tuning is an algorithm that measures
stator resistance R without the motor axle turning.
S
This means that the motor is not delivering any torque.
AMT can be used with benefit when initialising units
where the user wishes to optimise adjustment of
the frequency converter to the motor being used.
This is used in particular when the factory setting
does not sufficiently cover the motor.
For the best possible tuning of the frequency converter
it is recommended that AMT is performed on a
cold motor. It should be noted that repeated AMT
runs can cause heating of the motor, resulting
in an increase in the stator resistance R
rule, however, this is not critical.
AMT is performed as follows:
Start AMT:
1. Give a STOP signal.
2. Parameter 107 Automatic motor tuning is set
at value [2] Optimisation on.
3. A START signal is given and parameter 107
Automatic motor tuning is reset to [0] when
AMT has been completed.
M,N
that can be seen
M,N
x 60. f to be set
M,N M,N
.
M,N
[0]
[1]
. As a
S
19