Danfoss VLT HVAC Design Manual page 106

5 How to Install
Stop the AMA during operation
1. Press the [OFF] key - the frequency converter enters into alarm mode and the display shows that the AMA was terminated by the user.
Successful AMA
1. The display shows "Press [OK] to finish AMA".
2. Press the [OK] key to exit the AMA state.
Unsuccessful AMA
1. The frequency converter enters into alarm mode. A description of the alarm can be found in the
2. "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.
5
Unsuccessful AMA is often caused by incorrectly registered motor name plate data or too big difference between the motor power size and the frequency
converter power size.
Step 4. Set speed limit and ramp time
Set up the desired limits for speed and ramp time.
106
Minimum Reference
Maximum Reference
Motor Speed Low Limit
Motor Speed High Limit
Ramp-up Time 1 [s]
Ramp-down Time 1 [s]
MG.11.B9.02 - VLT ® is a registered Danfoss trademark
®
VLT HVAC Drive Design Guide
Troubleshooting section.
Minimum Reference
par. 3-02
Maximum Reference
par. 3-03
par. 4-11 Motor Speed Low Limit
[RPM] Motor Speed
or par. 4-12
Low Limit [Hz]
Motor Speed High Limit
par. 4-13
[RPM] or par. 4-14 Motor Speed
High Limit [Hz]
par. 3-41 Ramp 1 Ramp Up Time
par. 3-42 Ramp 1 Ramp Down
Time