Basic standard Burst
61000-4-4
Surge
61000-4-5
ESD
61000-4-2
Radiated
61000-4-3
Mains
distortion
VDE 0160
RF CM
voltage
2)
61000-4-6
Acceptance
criterion
B B B A A
Port connection CM DM/CM Field DM CM
Line OK/OK OK
Motor OK
Control lines OK
-/OK
1)
OK
Relay OK -/OK OK
Profibus OK
-/OK
1)
OK
Signal interface
<3 m
OK
Enclosure OK OK
Standard bus OK
-/OK
1)
OK
Basic specifications
Line 2 kV/DCN 2 kV/4kV 10 V
rms
Motor 10 V
rms
Control lines 2 kV/CCC
2 kV/2 Ω
1)
10 Vrms
Relay 2 kV/CCC
2 kV/2 Ω
1)
10 V
rms
Profibus 2 kV/CCC
2 kV/2 Ω
1)
10 V
rms
Signal interface
<3 m
2 kV/CCC
Enclosure 8 kV AD
6 kV CD
10 V/m
Standard bus 2 kV/CCC
2 kV/2 Ω
1)
10 V
rms
Table 5.6 EMC Immunity Data
1) Injection on cable screen
DM: Differential mode
CM: Common mode
CCC: Capacitive clamp coupling (5 kHz)
DCN: Direct coupling network (5 kHz)
5.1.22 Harmonic Current Emission
All 3-phase 380-480 V units comply with EN 61000-3-2.
5.1.23 Aggressive Environments
As all other electronic equipment, a frequency converter
contains a number of mechanical and electronic
components, which to a varying extent are vulnerable to
environmental impact.
CAUTION
Do not install the frequency converter in environments
where liquids, particles 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.
Liquids can be carried through the air and condense in the
frequency converter. In addition, liquids may facilitate
galvanic corrosion of components and metal parts. Steam,
oil and brine may cause corrosion of components and
metal parts. In these areas, fit units in cabinets. As a
minimum, cabinets should be enclosure IP54.
Particles in the air, such as dust particles, may lead to
mechanical, electrical and thermal faults on the frequency
converter. Typical indicators that there are too many
particles in the air are dust particles around the frequency
converter fan. In very dusty areas, cabinet fitting of units is
recommended. As a minimum, cabinets should be
enclosure IP54.
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 converter. These chemical processes
All about VLT 2800 Design Guide
MG27E402 Danfoss A/S © Rev. May/2014 All rights reserved. 135
5 5
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