Danfoss VLT AutomationDrive FC 302 Operating Manual page 26

Electrical Installation
•
Ensure that motor and brake cables are as short
as possible to reduce the interference level from
the entire system.
•
Avoid placing cables with a sensitive signal level
alongside motor and brake cables.
•
For communication and command/control lines,
follow the particular communication protocol
standards. Danfoss recommends use of shielded
cables.
•
Ensure that all control terminal connections are
PELV.
5 5
NOTICE
EMC INTERFERENCE
Use separate shielded cables for motor and control
wiring, and separate cables for mains wiring, motor
wiring, and control wiring. Failure to isolate power,
motor, and control cables can result in unintended
behavior or reduced performance. Minimum 200 mm (7.9
in) clearance between mains, motor, and control cables is
required.
NOTICE
INSTALLATION AT HIGH ALTITUDE
There is a risk of overvoltage. Isolation between
components and critical parts could be insufficient, and
not comply with PELV requirements. Reduce the risk of
overvoltage by using external protective devices or
galvanic isolation.
For installations above 2000 m (6500 ft) altitude, contact
Danfoss regarding PELV compliance.
NOTICE
PELV COMPLIANCE
Prevent electric shock by using protective extra low
voltage (PELV) electrical supply and complying with local
and national PELV regulations.
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VLT® AutomationDrive FC 302
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