Immunity Requirements - Danfoss VLT AutomationVTDrive FC322 Design Manual

2 Introduction to VLT Automation VT Drive

2.8 Immunity Requirements

The immunity requirements for frequency converters depend on the environment where they are installed. The requirements for the industrial environment
are higher than the requirements for the home and office environment. All Danfoss frequency converters comply with the requirements for the industrial
2
environment and consequently comply also with the lower requirements for home and office environment with a large safety margin.
In order to document immunity against electrical interference from electrical phenomena, the following immunity tests have been made on a system
consisting of a frequency converter (with options if relevant), a screened control cable and a control box with potentiometer, motor cable and motor.
The tests were performed in accordance with the following basic standards:
• EN 61000-4-2 (IEC 61000-4-2): Electrostatic discharges (ESD): Simulation of electrostatic discharges from human beings.
• EN 61000-4-3 (IEC 61000-4-3): Incoming electromagnetic field radiation, amplitude modulated simulation of the effects of radar and radio
communication equipment as well as mobile communications equipment.
• EN 61000-4-4 (IEC 61000-4-4): Burst transients: Simulation of interference brought about by switching a contactor, relay or similar devices.
• EN 61000-4-5 (IEC 61000-4-5): Surge transients: Simulation of transients brought about e.g. by lightning that strikes near installations.
• EN 61000-4-6 (IEC 61000-4-6): RF Common mode: Simulation of the effect from radio-transmission equipment joined by connection cables.
See following EMC immunity form.
Voltage range: 200-240 V, 380-480 V
Basic standard Burst Surge
IEC 61000-4-4 IEC 61000-4-5
Acceptance criterion B
Line 2 kV/2 Ω DM
4 kV CM
4 kV/12 Ω CM
Motor 4 kV CM 4 kV/2 Ω
Brake 4 kV CM
4 kV/2 Ω
Load sharing 4 kV CM 4 kV/2 Ω
Control wires 2 kV CM 2 kV/2 Ω
Standard bus 2 kV CM
2 kV/2 Ω
Relay wires 2 kV CM 2 kV/2 Ω
Application and Fieldbus op- 2 kV CM
2 kV/2 Ω
tions
LCP cable 2 kV CM
2 kV/2 Ω
External 24 V DC 0.5 kV/2 Ω DM
2 kV CM
1 kV/12 Ω CM
Enclosure
—
AD: Air Discharge
CD: Contact Discharge
CM: Common mode
DM: Differential mode
1. Injection on cable shield.
Table 2.2: Immunity
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MG.20.X1.22 - VLT
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Automation VT Drive FC322 Design Guide
ESD Radiated electromagnetic field RF common
IEC IEC 61000-4-3 mode voltage
61000-4-2 IEC 61000-4-6
B B A A
10 V
— —
RMS
1) — — 10 V
RMS
1) — — 10 V
RMS
1) — — 10 V
RMS
1) — — 10 V
RMS
1) — — 10 V
RMS
1) — — 10 V
RMS
1) — — 10 V
RMS
1) — — 10 V
RMS
10 V
— —
RMS
8 kV AD
— 10 V/m —
6 kV CD
®
is a registered Danfoss trademark