Fixing The Power Supply Cable To The Vibrator Terminal Board; Variable Frequency Supply; Section 4: Use Of The Vibrator; Preliminary Checks - ITALVIBRAS GIORGIO SILINGARDI E Serie Guia Tecnica

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DIAGRAM 5C (Fig. 5, page 4)
C) Power supply network
Without terminal block and with 3 leads (1,2,3).
DIAGRAM 3A (Fig. 6, page 4)
A) Lower voltage
B) Higher voltage
C) Power supply network
Without terminal block and with 6 leads: 1=red, 2=black, 3=brown,
4=white, 5=blue, 6=yellow.
DIAGRAM 3C (Fig.7, page 5)
A) Lower voltage
B) Higher voltage
C) Power supply network
Without terminal block and with 9 numbered leads.
DIAGRAM 5F (Fig.8, page 5)
A) Lower voltage
B) Higher voltage
C) Power supply network
E) Control equipment
Without terminal block and with 9 numbered leads.
DIAGRAM 5E (Fig.9, page 5)
A) Lower voltage
B) Higher voltage
C) Power supply network
E) Control equipment
Without terminal block and with 6 leads: 1=red, 2=black, 3=brown,
4=white, 5=blue, 6=yellow.
DIAGRAM 5D (Fig. 20, page 5)
C) Power supply network
On customer request the electric vibrator can be equipped with a 26W
anticondensation heater; the heater can be recommended in case of am-
bient temperature lower than –20°C and intermittent duty in high humidity
ambients, to avoid condensation inside the unit. For electrical connection
of the heater see diagram in page 7.
3.4 FIXING OF THE POWER SUPPLY CABLE TO THE
VIBRATOR TERMINAL BOARD
Follow the sequence of operations as indicated below.
Insert the power supply cable through the cable-gland inside the terminal
box (Fig.2-A, page 5).
Always use eyelet insulated terminal for connections (Fig.21-B,
page 5).
MTF-E (frame sizes 0-0-20-30-40) and VB-E (frame size 73) vibra-
tors series have no terminal block; when connecting the powering cable
use insulated connectors as shown in Fig.23-A, page 5.
Prevent fraying that could cause interruption or short circuits
(Fig.22-A, page 5).
Remember to place the relevant washers before the nuts (Fig.22-B,
pag.5). This prevents loosening with consequent uncertain connec-
tion to the network and possible damage.
Do not overlay the individual cable wires (Fig.23-24, page 5).
Carry out the connection according to the diagrams shown and tighten
the cable-holder fully home (Fig.25-A, page 5).
We recommend to fix the cable not more than 0,5m after the cable
gland, in way that no pull-out force is applied on the cable.
Position the foam rubber block ensuring that all wires are held and as-
semble the cover paying attention not to damage the seals (Fig.25-B,
page 5).
Always check that the network voltage and frequency correspond
to that indicated on the vibrator's identification plate before sup-
plying power (Fig.26A-B, page 5).
All vibrators must be connected to an adequate external overloa-
ding protection, according to the regulations in force.
D) Thermistor
∆ Delta
Y star
YY double star
Y star
YY double star
Y star
D) Thermistor
∆ Delta
Y star
D) Thermistor
D) Thermistor
When vibrators are installed in pairs it is important that each one has
its own external overloading protection and that these protections are in-
terlocked 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.27, page
5), see diagrams A and B (page 6) as examples of power and control
circuits in case of vibrators with thermistors. All vibrators starting from
and including frame size 70 are equipped with a PTC 30°C thermistor
(DIN 4408-44082). The thermistor is accessible in the terminal box and
can be connected to an adequate control equipment for protection of the
vibrator.
Pay attention to the way of fastening the cable in the cable-grip; in
order to guarantee the mechanical protection IP66, please tighten
strictly the metal ring to press the cable inside.
Important!: For the choice of start-up/shutdown and overloading
protection electrical appliances refer to the technical data, electri-
cal features, nominal current and start-up current. Also always
choose delayed magnetic-circuit breakers, to prevent release du-
ring start-up time, which may be longer in low environmental tem-
peratures.
NOTICE FOR ELECTRIC VIBRATOR USER'S:
M3/65-E MTF-E fr.sizes 01-10-20-30 VB-E fr.size 173
After the power supply cable connection it is absolutely essential
to fill entirely the terminal box with SILICON RTV 802 (bicomponent
composed by resin + catalyst) or equivalent product.
Failure to comply with the regulation described above, shall auto-
matically void the guarantee, the Italvibras' liabilities in merit as
well as the Exe certification validity.

3.5 VARIABLE FREQUENCY SUPPLY

All of the vibrators can be powered with a frequency drive (inverter) from
20Hz up to the nominal frequency, with constant torque functioning (ra-
ther with linear course of the Volt-Hertz curve) using a PWM (Pulse Width
Modulation) frequency drive.
SECTION 4 – Use of the vibrator

4.0 PRELIMINARY CHECKS

ATTENTION: Controls must be carried out by specialised staff. Du-
ring disassembly and re-assembly of protective parts (wiring box
cover and weight cover), remove the power supply from the vibra-
tor.
Check current draw :
- Remove the cover from the terminal board compartment.
- Power the vibrator.
- Use an ammeter to verify (Fig.28, page 5), on each phase, that the
input current does not exceed the value indicated on the identification
plate.
The maximum current limit is strictly dependent from the tempera-
ture class T3 or T4 (carefully see point 3.0.1).
If the current draw exceeds that stated on the plate:
- Check the flexible system and the vibrating machine framework are in
compliance with the regulations for correct application.
- Reduce force (centrifugal force) by adjusting the weights. Reduce them
until the value of absorbed current corresponds to that stated on the
identification plate, for the adopted temperature class.
ATTENTION: Avoid touching or allowing anyone to touch live parts
such as the terminal board.
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