Danfoss VLT AQUA Programming Manual page 16

1. How to Programme
1
1-29 Automatic Motor Adaptation (AMA)
Option:
[0]
[1]
[2]
Activate the AMA function by pressing [Hand on] after selecting [1] or [2]. See also the section
Automatic Motor Adaptation
AMA". After pressing the [OK] key the frequency converter is ready for operation.
Note:
•
•
See section
1.1.7. Function Setups
The Function Setup provides quick and easy access to all parameters required for the majority of
water and wastewater applications including variable torque, constant torque, pumps, dossing
pumps, well pumps, booster pumps, mixer pumps, aeration blowers and other pump and fan
applications. Amongst other features it also includes parameters for selecting which variables to
display on the LCP, digital preset speeds, scaling of analog references, closed loop single zone
and multi-zone applications and specific functions related to water and wastewater applications.
16
NB!
Max. output frequency cannot exceed 10% of the inverter switching frequency (par.
14-01).
* OFF
Enable complete AMA performs AMA of the stator resistance R
Enable reduced AMA
. After a normal sequence, the display will read: "Press [OK] to finish
For the best adaptation of the frequency converter, run AMA on a cold motor.
AMA cannot be performed while the motor is spinning.
NB!
It is important to set motor par. 1-2* Motor Data correctly, since these form part of
the AMA algorithm. An AMA must be performed to achieve optimum dynamic motor
performance. It may take up to 10 min, depending on the power rating of the motor.
NB!
Avoid generating external torque during AMA.
NB!
If one of the settings in par. 1-2* Motor Data is changed, par. 1-30 to 1-39, the
advanced motor parameters, will return to default setting.
This parameter cannot be adjusted while the motor is running.
Automatic Motor Adaptation
MG.20.O2.02 - VLT
Function:
The AMA function optimizes dynamic motor performance by au-
tomatically optimizing the advanced motor parameters (par.
1-30 to par. 1-35) while the motor is stationary.
No function
R , the stator leakage reactance X
r
X and the main reactance X
2
performs a reduced AMA of the stator resistance R
tem only. Select this option if an LC filter is used between the
frequency converter and the motor.
- application example.
®
is a registered Danfoss trademark
®
VLT AQUA Drive Programming Guide
, the rotor resistance
S
, the rotor leakage reactance
1
.
h
in the sys-
s