Vacon nx User Manual

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Vacon nx User Manual Manual pdf 55 page image

CABLING AND CONNECTIONS vacon • 5524-hour support +358 (0)201 212 575 • Email: vacon@vacon.com 66.1.5 Installation instructions1 Before starting the installation, check that none of the components of the frequencyconverter 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 theminimum distancesbetween the motor cables and other cables given in table below. The given distances also apply between the motor cables and signal cables of othersystems. Distancebetween cables[m]Shieldedcable[m]0.3 ≤501.0 ≤200 The total maximum length of motor cables incl. shielded cables should not exceed300m (units with power greater than 1.5 kW) and 100 m (units with power from 0.75to 1.5 kW). If used motor cables exceed these limits contact factory for moreinformation.NOTE: Each parallel cable adds to the total length. NOTE: If you use long motor cables (max. 100m) together with small drives (≤1.5 kW)the motor current measured by the drive can be much higher than the actual motorcurrent due to capacitive currents in the motor cable. Consider this when setting upthe motor stall protection functions. 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 6-7. Remove the screws of the cable protection plate. Do not open the cover of the powerunit! Make holes into and pass the cables through the rubber grommets on the bottom ofthe power unit (see chapter 6.1.4). Note: Use a cable gland instead of the grommet intypes where this is required. Connect the mains, motor and control cables into their respective terminals (seee.g. Figure 6-12). For information on the installation of greater units, please contact the factory oryour local distributor. For Information on cable installation according to UL regulations see Chapter6.1.6. Make sure that the control cable wires do not come in contact with the electroniccomponents of the unit. If an external brake resistor (option) is used, connect its cable to the appropriateterminal. Check the connection of the earth cable to the motor and the frequency converterterminals marked with . Connect the separate shield of the power cable to the earth terminals of thefrequency 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 theframe and the protection plate.