Danfoss VLT User Manual

Unsuccessful AMA
1. The adjustable frequency drive enters into alarm mode. A description of the alarm can be found in the
Troubleshooting section.
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
par.3-03 Maximum Reference
par.4-11 Motor Speed Low Limit [RPM] or par.4-12 Motor Speed
Low Limit [Hz]
par.4-13 Motor Speed High Limit [RPM] or par.4-14 Motor Speed
High Limit [Hz]
par.3-41 Ramp 1 Ramp-up Time Ramp-up Time 1 [s]
par.3-42 Ramp 1 Ramp-down Time Ramp-down Time 1 [s]
See the section How to program the adjustable frequency drive, Quick Menu Mode for easy set-up of these parameters.
VLT
®
HVAC Drive Instruction Manual 4 Electrical installation
MG.11.A9.22 - VLT
®
is a registered Danfoss trademark 4-31
4

Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)