Danfoss VLT HVAC User Manual

Unsuccessful AMA
1. The frequency converter 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 frequency converter entered alarm mode. This number along with the
description of the alarm will assist troubleshooting. If contacting Danfoss Service, make
sure to mention number and alarm description.
NB!
Unsuccessful AMA is often caused by incorrectly entered 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.
Minimum Reference par. 3-02
Maximum Reference par. 3-03
Motor Speed Low Limit par. 4-11 or 4-12
Motor Speed High Lim-
it
par. 4-13 or 4-14
Ramp-up Time 1 [s] par. 3-41
Ramp-down Time 1 [s] par. 3-42
4. Electrical installation VLT
®
HVAC Drive Operating Instructions
40 MG.11.A4.02 - 09.10.06. VLT
®
is a registered Danfoss trademark
4

Danfoss VLT HVAC Specifications

General

Enclosure Rating	IP20, IP21, IP54, IP55, IP66
Storage Temperature Range	-25°C to +70°C
Output Voltage Range	0-100% of supply voltage
Communication Protocols	Modbus RTU, BACnet, Ethernet/IP, Profibus DP
Ambient Temperature Range	-10°C to +50°C (without derating)
Relative Humidity	5% to 95% non-condensing
Altitude	Up to 1000 m without derating
Cooling Method	Air cooled
Application	HVAC systems, Pumps, Fans, Compressors
Voltage Range	200-240 V, 380-500 V, 525-600 V
Frequency Range	0 Hz to 590 Hz