HSD CPH 400 B, Assembly Instructions Manual

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5 Installation and commissioning
34
HSD S.p.A. © - h0104k02a.fm091115
5.5 Electrical connections SM 141 D/CPH 400 B
Refer to the product rating plate for the installed electric power. See paragraph 3.6 “Identification of
the manufacturer and of the product” .
The electrical connection operations must be performed by specialised and suitably
trained personnel.
Before starting any electrical connection operation make sure that the power supply
has been disconnected and that there is no voltage during operation.
The device must always be protected from dangers of indirect contact and dangers of
overload and overcurrent. Prepare adequate protections during installation, referring
to the technical characteristics of the product.
The device needs two different powers:

one logic power supply: 24 V
DC
;

one power supply: 230 V
AC
(50/60 Hz).
For further information on the technical characteristics of the product, please consult appendix A
“Technical characteristics” .
When running the device the first power that must be supplied is the logical power and then the
power supply. When switching the device off, first disconnect it from the power supply and then
from the logical power .
Do not perform maintenance operations, do not insert/remove modules or
connectors to the powered system.
After isolating the product, wait 60 minutes before carrying out any maintenance work. Some
parts may still be live due to an internal fault.
A connection error could definitively damage the main device and the other ones that
are connected.
Shared DC Bus power supply configurations
Whichever power supply configuration is used, it must not be floating with respect to earth, in order
to avoid risks of excessively high voltages on the capacities of the various filters to earth. If a
transformer is used, one phase of its secondary winding, or its star point, must be earthed.
The various configurations shown below only indicate the secondary winding of the transformer in
the case of a:

single-phase power supply;

three-phase power supply;

mixed power supply.
For other power supply configurations not mentioned, contact the HSD Assistance Service.