5. Electrical connection
The machine drive is supplied from the low voltage network.
Caution!
All work on the electrical equipment of this special s ewing
machine may only be carried out by qualified electricians or
other appropriately trained persons.
The mains plug must be removed.
5.1 Electric connection of machine to low voltage network
According to the selected type the machine drive has a one-phase or
three-phase supply. If the drive has the three-phase supply, it has an
asynchronous motor. In that case it is necessary to adjust the
connection of the coils in the motor terminal board (star or triangle) to
the voltage of the local electric network.
Caution!
The mains voltage must agree with the rated voltage specified
on the model-identification plate.
The low voltage circuit includes the following items:
–
Supply plug
–
Main switch (with the drive on the machine head the main switch is
incorporated in the drive)
–
Drive
–
Sewing lamp transformer (option)
–
Cables
Part of these items is included in the drive package. The other part is
included in the package of the set of parts for motor obligatorily
supplied with the machine head. The division of the items can be seen
in the catalog of spare parts. The low voltage circuit connection will be
made according to the wiring schedule, which is included in the
package of the set of parts for motor.
Caution! Risk of electric current injury!
The drives may be operated only with a safety conductor connected
to the functional protective system in accordance with the regulations
and rules to avoid personal injuries by electric current or fire.
The drive operation will become dangerous if the safety conductor
inside or outside the drive is disrupted. The protection must not be
disrupted with e. g. an extension cord w ithout the protective c onductor.
15
GB
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