Harmonic Current Emission; Aggressive Environments - Danfoss VLT 2800 Design Manual

All about VLT 2800
Basic standard
61000-4-4
Acceptance
criterion
Port connection
Line
Motor
Control lines
Relay
Profibus
Signal interface
<3 m
Enclosure
Standard bus
Basic specifications
Line 2 kV/DCN
Motor
Control lines 2 kV/CCC
Relay 2 kV/CCC
Profibus 2 kV/CCC
Signal interface 2 kV/CCC
<3 m
Enclosure
Standard bus 2 kV/CCC
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.
MG27E402
Design Guide
Burst Surge
61000-4-5
B B
CM DM/CM
OK/OK
OK
OK
-/OK 1)
OK -/OK
OK 1)
-/OK
OK
OK
-/OK 1)
2 kV/4kV
1)
2 kV/2 Ω
1)
2 kV/2 Ω
1)
2 kV/2 Ω
8 kV AD
6 kV CD
2 kV/2 Ω 1)
Danfoss A/S © Rev. May/2014 All rights reserved.
ESD Radiated
61000-4-2 61000-4-3
B A
Field
OK OK
10 V/m
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
Mains RF CM
distortion
voltage 2)
VDE 0160
61000-4-6
A
DM CM
OK
OK
OK
OK
OK
10 V
rms
10 V
rms
10 Vrms
10 V
rms
10 V
rms
10 V
rms
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