Typical Installation In A Panel Or Other Enclosures - Danfoss AHF 005 Instruction Manual

Typical installation in a panel or other enclosures

To avoid high frequency noise coupling keep a
minimum distance of 150 mm (5.91 inches) to:
a) mains/supply wires
b) motor wires of frequency converter
c) control- and signal wires (voltage range < 48 V)
To obtain low resistive HF-connections, grounding,
screening and other metallic connections (e. g.
mounting plates, mounted units) should have a
surface as large as possible to metallic ground.
Use grounding and potential equalisation wires
1. Panel
2. Mains supply wire
3. Motor wiring
4. Control wiring
5. Wiring between harmonic filter and
frequency converter
6. Mains supply wire of filter module
7. Mounting plate (common star point)
8. Potential equalisation
9. Filter module AHF 0xx
10. Mains connection
11. PLC
12. Frequency converter
13. Mains fuses
14. Mains circuit breaker
MG.80.B2.02 - VLT is a registered Danfoss trademark
AHF 005/010
with a cross section as large as possible (min.
10mm²) or thick grounding tapes.
Use copper or tinned copper screened wires
only, as steel screened wires are not suitable
for high frequency applications. Connect the
screen with metal clamps or metal glands to the
equalisation bars or PE-connections.
Inductive switching units (relay, magnetic contactor
etc.) must always be equipped with varistors,
RC-circuits or suppressor diodes.
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