Operation Manual

5 Electrical connection
The machine drive is supplied from the low voltage network.
Caution!
All work on the electrical equipment of this special sewing
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 t he 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 motor part set obligatorily supplied
with the machine head. The division of the items can be seen in the
parts list.
The low voltage circuit connection will be made according to the
wiring diagram, which is included in the package of the motor part set.
Danger! Risk of injury!
The control unit is intended to be connected to an earthed alternating
current network only.
It must only be connected using a multi-pin plug with a protective
contact.
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