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In direct machine’s protection are TN type, so it doesn’t need any other caution. If connection is different
(TT, IT) or if norms require other protection please provide it taking in consideration:
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Electromagnetic interference precaution can product high frequency electric dissipations.
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Machine can have direct current discharges to the earth.
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The differential switch must resist to high tension of atmospheric rise (EN 61008-1) and test with pulse
8/20 µs > 1000A (VDE 0432 T2).
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Recommended switch SIEMENS 5SZ3466-0KG00 o 5SZ6466-0KG00 following SIEMENS instruction or
other device with the same characteristics.
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For connection tension <= 400 V, electric cabinet is equipped with an automatic isolator for short circuit till
10 KA R.M.S or pick of 17 KA.
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For connection tension > 415 V, automatic isolator can resist tension of short circuit till 4 KA;
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If short circuit tension is higher, it must e decreased.
If there are disturbs of electric net it’s very important to install a magnetic filter.
If disturbs are more than 10% please install a voltage stabilizer.
4.6.2 Ground phase connection
The grounding of all metal parts of the machine is safely ensured by insulated conductors connected to the
earth bar inside the switch board. The grounding has to be in compliance with
CEI 64-8 normative
.
All materials used for the grounding have to be in compliance with the relevant normative and the con-
nections have to be adequately protected.
Make sure that the raceway is as short as possible and that the earth conductors are not subjected to mechani-
cal stress nor to oxidation.
4.7 Pneumatic connection
Provide pneumatic connection of FRL group, positioning on the base.
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The pneumatic connection has to be done by joining the compressed-air pipe of the pneumatic plant to
the connection of the pneumatic group on the machine by means of a hose clip or pipe fitting.
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Pull knob
( A )
till its locking (about 5 mm) to take pressure in the pneumatic plant.
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Turn till the manometer
( B )
shows 6 /7 bar.
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At the end regulation press knob
( A )
to stop the rotation.
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During working process, check and ad just pressure if necessary.
CAUTION
INFORMATION
( A )
( B )
