Electrical Connection; Special Conditions For Safe Use - ITALVIBRAS GIORGIO SILINGARDI CDX Serie Guia Tecnica

Attention: Do not carry out welding to the structure with the
vibrator mounted and connected. Welding could cause damage
to windings and bearings.
Warning: If installation is done in enclosed area, gas level or dust
content must be tested before welding. Welding in an area with
gas or dust may cause an explosion.
Attention: Use new bolts, lock nuts, and lock washers when
installing vibrator. Do not reuse old fasteners. Damage to
vibrator or structure could result.

3.2 ELECTRICAL CONNECTION

All wiring must be made in compliance with the National Standards
and with the Laws in force in the country of use, with particular
reference to the standards and legislations in force for explosive
environments (protection mode "d").
The wiring must be made by specialized electricians.

SPECIAL CONDITIONS FOR SAFE USE

The cable fastening must be made direct near the cable entry.
All accessories associated to the vibrator motor to ensure
smooth operation and safety must provide a recognized
protection type, adapted to their specific use.
The wires making up the power supply cable used to connect the
vibrator to the network must have an adequate section so that the
current density, in each wire does not exceed 4 A/mm
is used exclusively for the connection of the vibrator to earth.
The section of the wires must also be adequate for the length of the
cable used so that a drop voltage along the cable is not caused that
exceeds the values prescribed by the regulation on this subject.
The conductors forming the power supply cable connecting the
motor vibrator to the electricity main, must be of suitable section.
Use a power cable able to withstand temperature exceeding
105°C.
All CDX electric vibrators are equipped with a 130°C thermal
protector with a normally closed (NC) switching contact
(standard IEC/EN 60730); the thermal protector circuit is sized
for a maximum voltage rating of 600 Vac and a maximum
apparent power of 720 VA.
Use a manual momentary start switch.
The thermal protector has to be connected following diagram in
fig.29 page 98.
Alternatively for the frame sizes 35-40-50-60-70-80, only on
specific request, the CDX electric vibrators can be equipped
with a 130°C PTC thermistor, following standards DIN 44081-DIN
44082.
The thermistor eventually requested has to be connected
following diagram in fig.30 page 99.
The terminals of the thermal protector (or thermistor) are also
housed in the terminal box and are marked P1 and P2.
3.3 TERMINAL BOARD WIRING DIAGRAMS
ATTENTION: A tropicalised screw, indicated with the earth
symbol, is situated in the terminal box and on the external
surface (fig.7A page 7). The yellow-green (only green in the
ENGLISH
2
U.S.A.) conductor of the power supply cable must be connected
to this screw which acts as a earth connector for the vibrator.
For three-phase CDX electric vibrators the wiring diagrams is on
the bottom side of the terminal box cover, and is also indicated in
fig.27-28 pages 96-97.
For single-phase CDX electric vibrators (available only on frame
sizes 10-20-30, 2 and 4 poles) the wiring diagrams is indicated in
fig.26 pages 96-97.
NOTE: The single-phase vibrators are supplied without capacitor,
which the user must insert in an area protected from vibrations.
The capacitor value to be used is indicated on the identification
plate (CAP. ì F), for example 10 means that a 10 ì F condenser
must be used, while the indication of 32/12 means that for start-
up 32 ì F are necessary and for normal running 12 ì F are
necessary.
3.4 FIXING OF THE POWER SUPPLY CABLE
TO THE VIBRATOR TERMINAL BOARD
The CDX electric vibrators are supplied without cable gland.
The user has to mount a cable gland in compliance with the Laws
and Standards, for the specific zone of use e per il paese di
installazione ed uso.
Always use eyelet terminal for connections (Fig. 8, page 7).
Prevent progressive disintegration that could cause interruption
or short circuits (A Fig. 9, page 7).
Remember to place the relevant washers before the nuts (B Fig.
9, pag.7). This prevents loosening with consequent uncertain
. One of these
connection to the network and possible damage.
Do not overlay the individual cable wires (Fig.10, page 7).
Carry out the connection according to the diagrams shown and
tighten the cable-holder fully home (A Fig. 11, page 7).
Position the foam rubber block ensuring that all wires are held and
assemble the cover paying attention not to damage the seals (B
Fig. 11, page 7).
Always check that the network voltage and frequency correspond
to that indicated on the vibrator's identification plate before
supplying power (Fig. 13, page 8).
All vibrators must be connected to an adequate external
overloading protection, according to the regulations in force.
When vibrators are installed in pairs it is important that each one
has its own external overloading protection and that these
protections are interlocked together. This is because if a vibrator
accidentally shuts down, the power supply is interrupted to both
vibrators at the same time, so as not to damage the equipment to
which they are applied (Fig. 12, page 7).
See fig. 29, page 98 as example of power and control circuits in the
case of vibrators with thermostat.
See fig. 30, page 99 as example of power and control circuits in the
case of vibrators with thermistor.
Important!: For the choice of start-up/shutdown and overloading
protection electrical appliances refer to the technical data,
electrical features, nominal current and start-up current. Also
always choose delayed magnetic-circuit breakers, to prevent
release during start-up time, which may be longer in low
environmental temperatures.
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