Electrical Connection; General; Checking Nominal Voltage; Connecting Sewing Motor - DURKOPP ADLER 381 Installation Instructions Manual

6. Electrical connection

6.1 General

Connection package and grounding set
The electrical connection package and the grounding set are included in the
accessories of the special sewing machine.
The connection package includes all parts that are necessary for the electrical
connection of the sewing machine head to the sewing motor.
The grounding set serves for grounding the sewing machine head.
For connecting, see chapter 6.7.

6.2 Checking nominal voltage

The direct current drives, where used, are driven by single-phase alternating voltage.
For avoiding overloading of a single phase when connecting several machines to a
three-phase mains, please note the following:
The connections of the individual machines must be evenly distributed to the phases of
the three-phase mains (for cabling, see the circuit diagram).
6.3 Connecting the sewing motor
–
Pass the incoming cable of the main switch through the cable duct to the sewing
motor.
–
Connect the commutation transmitter and the setpoint generator (pedal).
–
Pass the mains cable of the main switch through the cable duct and through the
holder.
–
Secure the mains cable by a strain relief clamp.
14
NOTE !
Any work on the electrical equipment of the special sewing
machine should be carried out exclusively by qualified
electricians or by accordingly instructed persons.
The mains plug must have been pulled out!
It is absolutely necessary to note the Operating
Instructions of the manufacturer, supplied together
with the sewing motor!
NOTE !
The rated voltage and the nominal voltage, stated on the
rating plate, must agree.