Danfoss FC 102 Operating Manual page 24

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. For example, USB must use shielded
cables, but RS-485/ethernet can use shielded UTP
or unshielded UTP cables.
•
Ensure that all control terminal connections are
5 5
PELV.
NOTICE
EMC INTERFERENCE
Use shielded cables for motor and control wiring, and
separate cables for mains input, 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 input, motor, and control
cables is required.
NOTICE
INSTALLATION AT HIGH ALTITUDE
There is a risk for overvoltage. Isolation between
components and critical parts could be insufficient, and
may not comply with PELV requirements. Reduce the risk
for 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® HVAC Drive FC 102
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