Installation Instructions - Vacon NX_ 0003 5 User Manual

CABLING AND CONNECTIONS
6.1.5

Installation instructions

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Before starting the installation, check that none of the components of the AC
drive is live.
Place the motor cables sufficiently far from other cables:
Avoid placing the motor cables in long parallel lines with other cables
If the motor cables runs in parallel with other cables, note the minimum
distances between the motor cables and other cables given in table below.
The given distances also apply between the motor cables and signal
cables of other systems.
The maximum length of the motor cables is 984 ft (units with power
greater than 2.01 HP) and 328 ft (units with power from 1 to 2.01 HP).
NOTE: If you use long motor cables (max. 328 ft) together with small
drives ( 2.01 HP) the motor current measured by the drive can be much
higher than the actual motor current due to capacitive currents in the
motor cable. Consider this when setting up the motor stall protection
functions .
The motor cables should cross other cables at an angle of 194
Fahrenheit.
If cable insulation checks are needed, see Chapter 6.1.7.
Connect the cables:
Strip the motor and mains cables as advised in Table 6-6 and Figure 6-6.
Remove the screws of the cable protection plate. Do not open the cover
of the power unit!
Make holes into and pass the cables through the rubber grommets on
the bottom of the power unit (see chapter 6.1.4). Note: Use a cable gland
instead of the grommet in types where this is required.
Connect the mains, motor and control cables into their respective
terminals (see e.g. Figure 6-11).
For information on the installation of greater units, please contact the
factory or your local distributor.
For Information on cable installation according to UL regulations see
Chapter 6.1.6.
Make sure that the control cable wires do not come in contact with the
electronic components of the unit.
If an external brake resistor (option) is used, connect its cable to the
appropriate terminal.
Check the connection of the earth cable to the motor and the AC drive
terminals marked with
Connect the separate shield of the power cable to the earth terminals of
the AC drive, motor and the supply centre.
Attach the cable protection plate with the screws.
Ensure that the control cables or the cables of the unit are not trapped
between the frame and the protection plate.
Distance Shielded
between cables cable
[ft] [ft]
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vacon • 53
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