Electrical Connection; General; Connections Package And Grounding Kit; Checking The Mains Voltage - DURKOPP ADLER 768 Setting Instructions Manual

6.

Electrical connection

6.1

General

6.1.1

Connections package and grounding kit

The electrical connections package and the grounding kit are to be found in the
accessories pack of the special sewing machine.
The electrical connections package contains all parts necessary for the electrical
connection of the sewing machine head to the sewing drive.
The grounding kit serves for the grounding of the sewing machine head, the knee
switch and the mounting plate of the distributor.
6.2

Checking the Mains Voltage

6.3

Connecting the Sewing Drive

The direct-current positioning drive is operated with single-phase-alternating voltage.
By connection with a 3-phase mains of 3 x 380V, 3 x 400V or 3 x 415V the sewing drive
is connected to one phase and the neutral.
By connection with a 3-phase mains of 3 x 200V, 3 x 220V, 3 x 230V or 3 x 240V the
sewing drive is connected to two phases.
When multiple sewing machines are connected to a 3-phase mains, the connections
should be distributed equally among the phases in order to avoid the overburdening of
a phase.
See connection diagram 9800 139001 B
–
Lay the connection cable from the main switch through the cable duct to the sewing
drive and connect to the sewing drive.
–
Lay the mains cable from the main switch through the cable duct and fasten with
the mains lead cleat.
–
Insert the lead from the commutation adjuster into socket b2 of the drive controls.
(Only with a direct-current positioning drive) (See section 6.6)
–
Insert the lead from the set-point adjuster into socket b80 of the drive controls.
(Only with a direct-current positioning drive) (See section 6.6)
16
NOTE !
All work on the electrical equipment of the special sewing
machine may only be conducted by skilled electricians or
appropriately instructed persons.
The mains plug must be pulled out!
It is absolutely necessary to note the Operating
Instructions of the manufacturer, supplied together
with the sewing motor!
NOTE !
The design voltage listed on the rating plate of the sewing
drive and the mains voltage must agree.