Danfoss VLT 2800 Design Manual page 71

Programming
NOTICE
Note that if a value set in the nameplate parameters
102-106 is changed, there is an automatic change of
parameter 108 Stator resistance and parameter 109 Stator
reactance.
Motor power P
102
M,N
Value:
0.25 - 22 kW
Function:
Set a power value [kW] P , corresponding to the motor's
M,N
rated power. The factory sets a rated power value [kW] P
, that depends on the type of unit.
M,N
Description of choice:
Set a value that matches the nameplate data on the
motor. Settings between one size below and one size over
the factory setting are possible.
103 Motor voltage U
Value:
For 200 V units: 50 - 999 V
For 400 V units: 50 - 999 V
Function:
Set the rated motor voltage U
Δ.
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
Value:
24-1000 Hz
Function:
Select the rated motor frequency f
Description of choice:
Select a value that corresponds to the nameplate data on
the motor.
MG27E402
Design Guide
Depends on unit
M,N
230 V
400 V
for either star Y or delta
M,N
M,N
50 Hz
.
M,N
Danfoss A/S © Rev. May/2014 All rights reserved.
105 Motor current I
M,N
Value:
0,01 - I
MAX
Function:
The nominal, rated current of the motor I
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
whether the motor is star-connected Y or delta-connected
Δ.
106 Rated motor speed
Value:
100 - f x 60 (max.
M,N
60000 rpm)
Function:
Set the value that corresponds to the rated motor speed
n that can be seen from the nameplate data.
M,N
Description of choice:
Select a value that corresponds to the nameplate data on
the motor.
NOTICE
The maximum value equals f
parameter 104 Motor frequency, f
107 Automatic motor tuning, AMT
Value:
Optimisation off (AMT off)
Optimisation on (AMT start)
Function:
Automatic motor tuning is an algorithm that measures
stator resistance R without the motor axle turning. This
S
means that the motor is not delivering any torque.
AMT can be used for optimising 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.
Note that repeated AMT runs can cause heating of the
motor, resulting in an increase in the stator resistance R
As a 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] Optimisation
off when AMT has been completed.
Depends on choice of motor
forms part of
M,N
taking into account
M,N
Depends on parameter
104 Motor frequency, f
M,N
x 60. f to be set in
M,N M,N
.
M,N
[0]
[2]
.
S
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