Danfoss VLT AutomationDrive FC 360 Design Manual page 72

Design Guide | VLT® AutomationDrive FC 360
RFI filters
The goal is to obtain systems that operate stably without radio frequency interference between components. To achieve a high level of
immunity, use drives with high-quality RFI filters.
RADIO INTERFERENCE
In a residential environment, this product can cause radio interference, in which case supplementary mitigation measures may be
required.
PELV and galvanic isolation compliance
All drives control and relay terminals comply with PELV (excluding grounded Delta leg above 400 V).
Galvanic (ensured) isolation is obtained by fulfilling requirements for higher isolation and by providing the relevant creepage/clearance
distances. These requirements are described in the EN 61800–5–1 standard.
Electrical isolation is provided as shown (see the following illustration). The components described comply with both PELV and the
galvanic isolation requirements.
7 6
8
5
Figure 34: Galvanic Isolation
1
Current transducers
3
Gate drive for the IGBTs
5
Galvanic isolation for the 24 V backup option
7 Internal inrush, RFI, and temperature measurement circuits 8
EMC-compliant Installation
7.13.6
To obtain an EMC-compliant installation, follow the instructions provided in the operating guide. For an example of proper EMC
installation, see the following illustration.
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4 3
2
NOTICE
M
2
Galvanic isolation for the RS485 standard bus interface
4
Supply (SMPS) including signal isolation of V DC, indicating
the intermediate current voltage
6
Opto-coupler, brake module (optional)
Customer relays
AJ435824192086en-000101 / 130R1295