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Danfoss VLT HVAC Drive FC 102 Manual de instalação
Installation

3.3 EMC-compliant Installation

To obtain an EMC-compliant installation, follow the
instructions provided in the relevant frequency converter
Operating Instructions and Design Guide. Refer to the
fieldbus master manual from the PLC supplier for further
installation guidelines.

3.4 Grounding

•
Ensure that all stations connected to the fieldbus
network are connected to the same ground
potential. When there are long distances between
the stations in a fieldbus network, connect the
individual station to the same ground potential.
Install equalising cables between the system
components.
•
Establish a grounding connection with low HF
impedance, for example by mounting the
frequency converter on a conductive back plate.
•
Keep the ground wire connections as short as
possible.

3.5 Cable Routing

NOTICE
EMC INTERFERENCE
Use screened cables for motor and control wiring, and
separate cables for fieldbus communication, motor
wiring, and brake resistor. Failure to isolate fieldbus
communication, motor, and brake resistor cables can
result in unintended behaviour or reduced performance.
Minimum 200 mm (7.9 in) clearance between power,
motor, and control cables is required. For power sizes
above 315 kW, it is recommended to increase the
minimum distance of 500 mm (20 in).
NOTICE
When the fieldbus cable crosses a motor cable or a brake
resistor cable, ensure that the cables cross at an angle of
90°.
MG90U402
Installation Guide
1
1
2
Illustration 3.4 Cable Routing
Danfoss A/S © Rev. 07/2014 All rights reserved.
≥ 200mm
2
Ethernet cable
90° crossing
3
3
7