Danfoss VLT Instruction Manual page 49

VLT ® HVAC Drive Instruction Manual
Unsuccessful AMA
1. The adjustable frequency drive 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 adjustable frequency drive entered
alarm mode. This number, along with the description of the alarm, will assist in troubleshooting. If contacting Danfoss Service, make sure to
mention number and alarm description.
NOTE!
Unsuccessful AMA is often caused by incorrectly entered motor nameplate data or too big difference between the motor power size
and the adjustable frequency drive power size.
Step 4. Set speed limit and ramp time
Set up the desired limits for speed and ramp time.
par.3-02 Minimum Reference
Maximum Reference
par.3-03
See the section How to program the adjustable frequency drive, Quick Menu Mode
par.4-11
Low Limit [Hz]
par.4-13
High Limit [Hz]
par.3-41
par.3-42
for easy set-up of these parameters.
MG.11.A9.22 - VLT ® is a registered Danfoss trademark
4 Electrical installation
Troubleshooting
Motor Speed Low Limit [RPM] or par.4-12
Motor Speed High Limit [RPM] or par.4-14
Ramp 1 Ramp-up Time
Ramp-up Time 1 [s]
Ramp 1 Ramp-down Time
Ramp-down Time 1 [s]
section.
4
Motor Speed
Motor Speed
4-31