Electrical Connection; Connection To The Terminal Box; Connecting The Power Supply Cable To The Vibrator's Terminal Block; Connecting The Power Supply Cable To The Main - ITALVIBRAS GIORGIO SILINGARDI MVSS Guide Technique

Warning: Do not make welds on the support structure with the
motorised vibrator installed and electrically connected. Welding
could damage the windings and bearings.
3.2 ELECTRICAL CONNECTION (Fig. 11)
The conductors forming the power supply cable connecting the
electric rotary vibrator to the electricity main must be of suitable
section. They must ensure that the current density in each conductor
never exceeds 4 A/mm . One of these conductors must exclusively
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be used to earth the vibrator.
The section of the conductors must be suited to the length of the
utilized cable itself since there must be no voltage drops along the
cable beyond the values prescribed by the Provisions in merit.
Always use flexible cables with an outer diameter corresponding to
the «Technical Features» Tables. This will ensure that the cable
gland in the terminal box securely grips the power supply cable.

3.3 CONNECTION TO THE TERMINAL BOX

ATTENTION: The terminal box has a tropicalized screw bearing a
plate stamped with symbol
only in the USA) conductor of the power supply cable must be
connected to this screw which acts as a earth connector for the
vibrator.
The wiring diagram is affixed to the terminal strip compartment. The
pertinent wiring diagram is that with a reference corresponding to
that indicated on the identification plate.
LAYOUT 2A (Fig. 13)
A) Lower voltage
B) Higher voltage
C) Electricity main
For THREEPHASE connection
LAYOUT 2C (Fig. 14)
A) Lower voltage
B) High voltage
C) Electricity main
For THREEPHASE connection
LAYOUT 2D (Fig. 15)
C) Electricity main
LAYOUT 5A (Fig. 16)
A) Lower voltage
B) Higher voltage
C) Electricity main
E) Control equipment
For THREEPHASE connection
With thermistor thermic protection
LAYOUT 5B (Fig. 17)
A) Lower voltage
B) Higher voltage
C) Electricity main
D) Thermistor
E) Control equipment
For THREEPHASE connection
With thermistor thermic protection.
LAYOUT 1A (Fig. 18)
C) Electricity main
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(Fig. 12). The yellow-green (green
¢ ¢ ¢ ¢ ¢ delta
Y star
YY double star
Y star
¢ ¢ ¢ ¢ ¢ delta
Y star
D) Thermistor
YY double star
Y star
F) To invert the rotation direction
For SINGLE-PHASE connection
LAYOUT 1B (Fig. 19)
C) Electricity main
F) To invert the rotation direction
For SINGLE-PHASE connection.
LAYOUT 1E (Fig. 20)
C) Electricity main
F) To invert the rotation direction
For SINGLE-PHASE connection.
3.4 CONNECTING THE POWER SUPPLY CABLE TO
THE VIBRATOR'S TERMINAL BLOCK
Comply with the below indicated sequence:
Push the power supply cable through the cable grip inside the
terminal box (A Fig. 21).
Always use eyelet terminals for connection (B Fig. 21).
Prevent fraying, which could cause interruptions or short-
circuits (A Fig. 22).
Always remember to insert the washers before the nuts in order
to prevent slackening, uncertain mains connection and possible
damage (B Fig. 22).
Make the connections according to the relative diagrams and fully
tighten the cable grip (A Fig. 23).
Insert the foam rubber block, checking that it completely presses
down the conductors. Mount the cover, taking care to prevent
damage to the seal (B Fig. 23).
3.5 CONNECTING THE POWER SUPPLY CABLE
TO THE MAIN
The power supply cable must be connected to the electricity
main by an installer, in compliance with the current safety
provisions.
It is essential to ground the electric rotary vibrator using the
yellow-green conductor (green in the USA).
Always check that the mains voltage and frequency values
correspond to those indicated on the vibrator identification
plate before powering the equipment (Fig.24).
When the electric rotary vibrators are installed in pairs, it is
important to ensure that each one has its own external protection
against overloads and that these protections are interlocked together.
Should one vibrator accidentally stop, power supply to both machines
would be inhibited at the same time to prevent damage to the
equipment to which they are connected (Fig. 25) consult diagrams
A and B (page 74) as examples of power and control circuits if the
electric vibrators are fitted with thermistors (standard assembly from
size 70 inclusive).
Important: consult the technical data, electrical characteristics,
rated current and starting power draw when choosing the
electrical equipment to start/stop the machine and protect
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