Max. cross section to control wires, rigid wire
1.5 mm
2
/16 AWG (2 x 0.75 mm
2
)
Max. cross section to control cables, flexible cable
1 mm
2
/18 AWG
Max. cross section to control cables, cable with enclosed core
0.5 mm
2
/20 AWG
When complying with EN 55011 1A and EN 55011 1B the motor cable must in certain
instances be reduced. See EMC emission.
Control characteristics:
Frequency range
0.2 - 132 Hz, 1 - 1000 Hz
Resolution of output frequency
0.013 Hz, 0.2 - 1000 Hz
Repeat accuracy of
Precise start/stop
(terminals 18, 19)
± 0.5 msec
System response time (terminals 18, 19, 27, 29, 33)
26.6 msec
Speed control range (open loop)
1:10 of synchronous speed
Speed control range (closed loop)
1:120 of synchronous speed
Speed accuracy (open loop)
150 - 3600 rpm: Max. error of ±23 rpm
Speed accuracy (closed loop)
30 - 3600 rpm: Max. error of ±7.5 rpm
All control characteristics are based on a 4-pole asynchronous motor
Surroundings:
Enclosure
IP 20
Enclosure with options
NEMA 1
Vibration test
0.7 g
Max. relative humidity
5% - 93% during operation
Ambient temperature
Max. 45 °C (24-hour average max. 40 °C)
Derating for high ambient temperature, see special conditions in the Design Guide
Min. ambient temperature during full-scale operation
0 °C
Min. ambient temperature at reduced performance
- 10 °C
Temperature during storage/transport
-25 - +65/70 °C
Max. altitude above sea level
1000 m
Derating for high air pressure, see special conditions in the Design Guide
EMC standards, Emission
EN 61000-6-4, EN 61800-3, EN 55011
EMC standards, Immunity
EN 61000-6-1/2, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN
61000-4-5, EN 61000-4-6, EN 61800-3
See section on special conditions in the Design Guide
Safeguards:
•
Electronic thermal motor protection against overload.
•
Temperature monitoring of the power module ensures that the frequency converter cuts
out if the temperature reaches 100 °C. An overload temperature cannot be reset until
the temperature of the power module is below 70 °C.
1.12 Special Conditions
1.12.1 Aggressive Environments
The frequency converter is not to be installed in environments, where liquids, par-
ticles or gases are in the air that would impact and damage the electronics. Unless
the necessary measures are taken to protect the frequency converter, there is a risk
of stoppages, which reduce the service life of the frequency converter.
Aggressive gases, such as sulphur, nitrogen and chlorine compounds, together with high humidity
and temperature, facilitate possible chemical processes on the components of the frequency con-
verter. These chemical processes quickly impact and damage the electronics. In these areas,
1 Quick Guide
VLT 2800 Quick Guide
32
MG.28.M1.02 - VLT
®
is a registered Danfoss trademark
1
