Danfoss VLT Series Design Manual page 98

5. How to Install
Stop the AMA during operation
1.
Successful AMA
1.
2.
Unsuccessful AMA
1.
5
2.
Step 4. Set speed limit and ramp time
Set up the desired limits for speed and ramp
time.
98
Press the [OFF] key - the frequency converter enters into alarm mode and the display
shows that the AMA was terminated by the user.
The display shows "Press [OK] to finish AMA".
Press the [OK] key to exit the AMA state.
The frequency converter enters into alarm mode. A description of the alarm can be found
in the Troubleshooting section.
"Report Value" in the [Alarm Log] shows the last measuring sequence carried out by the
AMA, before the frequency converter entered alarm mode. This number along with the
description of the alarm will assist you in troubleshooting. If you contact Danfoss Service,
make sure to mention number and alarm description.
NB!
Unsuccessful AMA is often caused by incorrectly registered motor name plate data
or too big difference between the motor power size and the VLT HVAC Drive power
size.
MG.11.B2.02 - VLT
Minimum Reference
Maximum Reference
Motor Speed Low Limit par. 4-11 or 4-12
Motor Speed High Lim-
it
Ramp-up Time 1 [s]
Ramp-down Time 1 [s] par. 3-42
®
is a registered Danfoss trademark
®
VLT HVAC Drive Design Guide
par. 3-02
par. 3-03
par. 4-13 or 4-14
par. 3-41