TM080600TM071343
Installation requirements
Any installation, maintenance and inspection must be car-
ried out by trained persons.
WARNING
Sharp element
Death or serious personal injury
‐Use safety knives and protective gloves when unpack-
ing the product.
WARNING
Heavy lifting
Death or serious personal injury
‐Use proper lifting equipment when handling the prod-
uct.
‐Follow local regulations.
WARNING
Electric shock
Death or serious personal injury
‐Before starting any work on the product, make sure
that the power supply has been switched off at least
for as long as stated below and that it cannot be acci-
dentally switched on.
‐Touching the electrical parts may be fatal, even after
CUE has been switched off.
Safety regulations
• The OFF button of the operating panel does not disconnect
CUE from the power supply and must therefore not be used as
a safety switch.
• CUE must be earthed correctly and protected against indirect
contact according to local regulations.
• The leakage current to protective earth exceeds 3.5 mA.
• Enclosure class IP20/21 must not be installed freely accessible,
but only in a panel.
• Enclosure class IP54/55 must not be installed outdoors without
additional protection against weather conditions and the sun.
• The STO function does not disconnect CUE from the power
supply and must therefore not be used as a safety switch.
• The STO function does not prevent unwanted movement from
external forces on the motor, for example, back pressure, and
the motor shaft must be covered.
Always observe local regulations concerning cable cross-section,
short-circuit protection and overcurrent protection.
The general safety necessitates special considerations as to these
aspects:
• fuses and switches for overcurrent and short-circuit protection
• selection of cables (mains current, motor, load distribution and
relay)
• net configuration (IT, TN, earthing)
• safety on connecting inputs and outputs (PELV).
IT mains
Do not connect 380-500 V CUE frequency converters to
mains supplies with a voltage between phase and protec-
tive earth of more than 440 V.
In connection with IT mains and earthed delta mains, the mains
voltage may exceed 440 V between phase and protective earth.
Aggressive environment
CUE must not be installed in an environment where the air
contains liquids, particles or gases which may affect and
damage the electronic components.
CUE contains a large number of mechanical and electronic
components. They are all vulnerable to environmental impact.
Reduction at low air pressure
At altitudes above 2000 m (6600 ft), the PELV require-
ments cannot be met.
PELV = Protective Extra Low Voltage.
At low air pressure, the cooling capacity of air is reduced, and CUE
automatically reduces the performance to prevent overload.
It may be necessary to select a CUE unit with a higher
performance.
Mechanical installation
The individual CUE cabinet sizes are characterised by their
enclosures. The table in section Enclosure shows the relationship
between enclosure class and enclosure type.
Enclosure types
Products with integrated STO function must be installed in an IP54
cabinet according to IEC 60529 or in an equivalent environment. In
special applications, a higher IP degree may be necessary.
Space requirements and air circulation
CUE units can be mounted side by side, but as a sufficient air
circulation is required for cooling, these requirements must be met:
• Sufficient free space above and below the CUE cabinet. See
table below.
• Ambient temperature up to 50 °C (122 °F).
Required free space above and below the CUE cabinet
Enclosure Space [mm (in)]
B2, C 1 50 (2.0)
6
English (GB)
