TREND NX Variable Speed Drives - Manual (Page 66)

CABLING AND CONNECTIONS vacon • 49
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6
6.1.5 Installation instructions
1 Before starting the installation, check that none of the components of the
frequency converter is live.
2 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 300 m (units with power
greater than 1.5 kW) and 100 m (units with power from 0.75 to 1.5 kW).
The motor cables should cross other cables at an angle of 90 degrees.
3 If cable insulation checks are needed, see Chapter 6.1.7.
4 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 6-10).
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
frequency converter terminals marked with .
Connect the separate shield of the power cable to the earth
terminals of the frequency converter, 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
between cables
[m]
Shielded
cable
[m]
0.3
≤50
1.0
≤200