Danfoss VLT AutomationDrive FC 300 Programming Guide

Activate the AMA function by pressing [Hand on] after selecting [1] or [2]. See also the section
Automatic Motor Adaptation in the Design Guide. After a normal sequence, the display will read:
"Press [OK] to finish AMA". After pressing the [OK] key the frequency converter is ready for oper-
ation.
This parameter cannot be adjusted while the motor is running.
[0] * Off
[1] Enable complete AMA Performs AMA of the stator resistance R
S
, the rotor resistance R
r
, the stator leakage reactance X
1
,
the rotor leakage reactance X
2
and the main reactance X
h
. Do not select this option if an LC filter is
used between the frequency converter and the motor.
FC 301: The Complete AMA does not include X
h
measurement for FC 301. Instead, the X
h
value is
determined from the motor database. R
S
is the best adjustment method (see 1-3* Adv. Motor Da-
ta
).
T4/T5 E and F Frames, T7 D, E and F Frames will only run a Reduced AMA when the complete AMA
is selected. It is recommended to obtain the Advanced Motor Data from the motor manufacturer to
enter into par. 1-31 through 1-36 for best performance.
[2] Enable reduced AMA Performs a reduced AMA of the stator resistance R
s
in the system only.
Note:
• For the best adaptation of the frequency converter, run AMA on a cold motor.
• AMA cannot be performed while the motor is running.
• AMA cannot be performed on permanent magnet motors.
NB!
It is important to set motor par. 1-2* 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* is changed, par. 1-30
Stator Resistance (Rs) to par. 1-39 Motor Poles , the advanced motor parameters,
will return to default setting.
NB!
AMA will work problem-free on 1 motor size down, typically work on 2 motor sizes down, rarely work on 3 sizes down and never work
on 4 sizes down. Please keep in mind that the accuracy of the measured motor data will be poorer when you operate on motors smaller
than nominal VLT size.
FC 300 Programming Guide 3 Parameter descriptions
MG.33.M8.02 - VLT
®
is a registered Danfoss trademark 49
3

Danfoss VLT AutomationDrive FC 300 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300
Category	DC Drives
Language	English