Nord Drivesystems SK 180E Series, Руководство пользователя

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2 Assembly and installation
BU 0180 en-4118 47
As delivered, the device is configured for operation in TN or TT networks. With this, the mains filter
has its normal effect and leakage current. A network that is earthed in the neutral point must be used,
and with single-phase devices a zero conductor must be used!
Adaptation to IT networks – (from size 2 )
WARNING
Unexpected movement in case of mains faults
In case of a mains fault (short circuit to earth) a frequency inverter which is switched off may switch on
automatically. Depending on the parameterisation, this may cause the drive unit to start automatically.
• Danger of injury due to automatic start
Secure the system against unexpected movement (block, decouple mechanical drive, provide protection against
falling, etc.)
NOTICE!
Operation on IT network (Size 2 and above )
If a mains fault (short-circuit to earth) occurs in an IT network, the link circuit of a connected frequency inverter
may become charged. This results in destruction of the link circuit capacitors due to overcharging.
• Connect a brake resistor to dissipate excess energy.
For operation on the IT network, simple adaptations must be carried out by relocating the jumpers
(C
Y
=OFF). which may result in impairment of the radio interference suppression.
The insulation resistance of the frequency inverter must be taken into consideration when operating on
an insulation monitor (

Section 7 "Technical data").
(1) Jumper, left side (2) Jumper, right side
Figure 7: Jumpers for mains adaptation
Use with differing supply networks or network types
The frequency inverter may only be connect to and operated in supply networks which are explicitly
stated in this section (

Section 2.4.2.1 "Mains supply (L1, L2(/N), L3, PE)")). Operation in deviating
network types may be possible, but must be explicitly checked and approved by the
manufacturer in advance .
2.4.2.2 Motor cable (U, V, W, PE)
The motor cable may have a
total length of 50 m
if it is a standard cable type (take EMC into
consideration). If a screened motor cable is used, or if the cable is laid in a well-earthed metal conduit,
the total length should not exceed 20 m (connect cable shield to PE, on both sides).