2 Assembly and installation
BU 0200 en-3118 61
Pos: 13 7 /Anlei tung en/El ektr onik/FU und Star ter/2 . Mon tage un d Install atio n/Ele ktrisc her Ans chlus s/SK 1xxE, SK 2xxE, SK xxxE-FDS/L eist ung stei l/E lek tris cher An schl uss L eist ungs teil _T eil 3 - Netz anschluss [SK 2xxE] @ 7\mod_1434537482294_388.docx @ 226531 @ 4 @ 1
2.4.2.1 Mains supply (L1, L2(/N), L3, PE)
No special safety measures are required at the mains input side of the device. It is advisable to use
the normal mains fuses (see technical data) and a main switch or circuit breaker.
Frequency inverter data Permissible mains data
Type Voltage Power 1 ~ 115 V 1 ~ 230 V 3 ~ 230 V 3 ~ 400 V
Connections L/N = L1/L2 L/N = L1/L2 L1/L2/L3 L1/L2/L3
Disconnection from or connection to the mains must always take place with all poles, and must also
be synchronous (L1/L2/L3 or L1/N).
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!
Pos: 13 8 /Anlei tung en/El ektr onik/FU und Star ter/2 . Mon tage un d Install atio n/Ele ktrisc her Ans chlus s/SK 1xxE, SK 2 xxE, S K xxxE-FD S/L eist ung stei l/ Elek tris cher An schl uss L eist ungs teil _T eil 3 - Anpassung an IT-Netze_00 [SK 1x0E,SK 2xxE, SK xxxE-FDS] @ 19\ mod_1511533769988_388.docx @ 2372726 @ 5 @ 1
Adaptation to IT networks – (from size 1)
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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.)
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NOTICE
Operation in IT networks
If a mains fault (short-circuit to earth) occurs in an IT network, the link circuit of a connected frequency inverter
may become charged, even if it is switched off. This results in destruction of the link circuit capacitors due to
overcharging.
• Connect a brake resistor to dissipate excess energy.
• Ensure that the frequency inverter controller is ready for operation as necessary:
– If a device with an integrated mains unit (SK 2x0E) is used, the internal control unit, and therefore all
monitoring functions switch on automatically.
– If a device without an integrated mains unit (SK 2x5E) is used, the 24 V supply of the device must be
switched on before the mains voltage is switched on. The 24 V supply to the device must only be switched
off after the device has been disconnected from the mains voltage.
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