English
Operating instructions
9
5.3
Electrical connection
T
HE
SUPPLY
’
S
VOLTAGE
REQUIRED
BY
THE
MACHINE
IS
HIGH
,
SO
,
IT
IS
PARTICULARLY
DAN
-
GEROUS
. T
HE
WORKS
ON
THE
SUPPLY
’
S
ELECTRICAL
CIRCUITS
MUST
BE
MADE
WORKMANLIKE
BY
QUALIFIED
STAFF
.
T
HE
ELECTRICAL
SAFETY
OF
THIS
MACHINE
IS
REACHED
ONLY
WHEN
THE
SAME
IS
CORRECTLY
CONNECTED
,
BY
QUALIFIED
AND
CERTIFIED
PERSONNEL
,
TO
AN
EFFICIENT
EARTHING
SYSTEM
,
MADE
AS
PROVIDED
FOR
IN
FORCE
SAFETY
REGULATIONS
.
The manufacturer must not be considered responsible for eventual damages
caused by an inadequate electric plant or earthing.
All the machine’s electrical features required for the system’s proportioning are re-
ported on the Technical Data Plate and on the Technical Handbook.
F
OR
THE
PREPARATION
OF
THE
ELECTRICAL
PLANT
WHICH
SUPPLIES
THE
MACHINE
,
IT
IS
COMPULSORY
TO
FOLLOW
THE
PRESCRIPTIVE
STANDARDS
IN
FORCE
.
IN
PARTICULAR
:
-
The electrical capacity of the plant must exactly match the supply’s voltage and frequency required by the machine;
-
the current capacity of the plant must be suitable for the machine’s input;
-
the plant must end with a standard socket (3-pole socket for monophasic 1N input and 5-pole socket for triphasic 3N –
3F input) with electrical and mechanical suitable characteristics. The electrical socket’s poles must be marked with
appropriate letters (phase R or phases R-S-T + neutral N + earth); the earth pole must be properly recognizable;
-
the electrical socket must prevent, through appropriate mechanical measures, the plug’s wrong connection;
-
the electrical socket must have, above or annexed, a knife switch, conformed to the in force safety laws, with an
associated safety breaker positioned near the machine, in a place easily reachable by the operator. It must also be
protected by fuses, above or annexed, with characteristics suited at the current absorbed by the machine.
A
WRONG
CONNECTION
ON
THE
EARTH
TERMINAL
MAY
CAUSE
SERIOUS DANGER.
A plug (3-pole plug for monophasic 1N input and 5-pole plug for triphasic 3N – 3F
input) must be connected to the end of the input cable. This must be suited to the power
supply socket.
The machine’s power supply cable is composed by coloured wires, and eventually
marked with appropriate bands, which must be connected to the relevant plug’s termi-
nals, as shown in the following table.
F
AULTY
WIRING
INSIDE
THE
PLUG
MAY
BE
DANGEROUS
AND
CAUSE
DAMAGE
TO
THE
MACHINE
.
FOR
THE
CONNECTION
,
ONLY
ADDRESS
YOURSELVES
TO
QUALIFIED
AND
AUTHORIZED
TECHNICIANS
.
Kind
Wire
Wire marking band
Code marked near
of supply
colour
(only 3N – 3F)
plug’s terminal
EARTH
GREEN/YELLOW
None
PE or
Phase R (3N – 3F)
BLACK
R or L1
Phase S (3N – 3F)
BROWN
S or L2
Phase T (3N – 3F)
BLACK
T or L3
NEUTRAL
BRIGHT or SKY BLUE
N
Phase (1N)
BROWN
—
L
Before operating machine the initial functional test is required (ref. Par. 5.4).
