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6.5.1 Additional Instructions for Cable Installation
• Before starting, make sure that none of the components of the AC drive is live. Read carefully the warnings in Safety section.
• Make sure that the motor cables are sufficiently far from other cables.
• The motor cables must go across other cables at an angle of 90°.
• If it is possible, do not put the motor cables in long parallel lines with other cables.
• If the motor cables are in parallel with other cables, obey the minimum distances (see table 11 ).
• The distances are also valid between the motor cables and the signal cables of other systems.
• The maximum lengths of shielded motor cables are 300 m (984 ft) (AC drives with power greater than 1.5 kW or 2 hp), and 100 m
(328 ft) (AC drives with power from 0.75 kW to 1.5 kW or 1–2 HP). If the used motor cables are longer than these, speak to the
factory to get more information.
Each parallel cable adds to the total length.
NOTICE
If long motor cables are used (maximum 100 m or 328 ft) together with small drives (≤1.5 kW or ≤2.01 hp), the capacitive
current in the motor cable can increase the measured motor current compared to the actual motor current. Think this when
setting up the motor stall protection functions.
• If the cable insulation checks are necessary, see 9.3 Measuring the Cable and Motor Insulation .
Table 11: Minimum Distances between Cables
The distance between ca-
bles [m] The length of the shielded cable
[m] The distance between ca-
bles [ft] The length of the shielded cable
[ft]
0.3 ≤ 50 1.0 ≤ 164.0
1.0 ≤ 300 3.3 ≤ 656.1
6.5.2 Installing the Cables, FR4-FR6
Context:
Follow these instructions to install the cables and cable accessories.
For information on how to comply with the UL regulations in cable installation, see 6.1.2 UL Standards on Cabling .
If it is necessary to connect an external brake resistor, see VACON
®
Brake Resistor Manual. See also 8.7.8.2 Setting the Internal Brake
Resistor Connection .
Prerequisites:
Make sure that the delivery contains all necessary components. For the installation, the contents of the accessories bag is needed, see
4.1 Checking the Delivery .
Open the covers according to instructions in 6.4.1 Get Access and Locate the Terminals for FR4 , 6.4.2 Get Access and Locate the
Terminals for FR5 or 6.4.3 Get Access and Locate the Terminals for FR6 .
Electrical Installation Operating guide | VACON® NXS/NXP Air-cooled
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