NARGESA 2020-240, Instruction Book, Page: 13 / 54

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SECTION BENDING MACHINE MC650
IMPORTANT: This machine must be connected to an electrical outlet with earthing contact.
4.4 Instructions for connecting to the power supply
The MC650 bending machine has a three - phase 230V/400V, 3 Kw motor to move the rollers and a three –
phase 230V/400V, 0.75 Kw motor to govern the hydraulic piston, both prepared to connect to a 400V
power supply. The machine must be connected through the the installed connector to a compatible power
supply complying with the specified requirements.
If you wish to connect the machine to 230V three - phase, it is necessary to carry out some modification in
the electric panel, which are:
- Change the main motor coil connection
- Change the hydraulic motor coil connection
- Adjustment of intensity range of motor keeper at the hydraulic.
- Change of motor keeper at the main engine.
Changing the motor connection:
When the power supply is 400 V three - phase, connect in Star form (as preinstalled at the factory).
If the power supply is 230 V three - phase, proceed to connect in Triangle form. As indicated in the
illustration.
The connections are modified in the motor connection box, located inside the machine, changing the
configuration of the plates according to the mains voltage.
Figure 7. Change of engine connections
Triangle figure
For voltage 230V
Star figure
(Default)
For voltage 400V
Before making any changes to the wiring of the motor bobbins or electrical panel, it is essential
to check that the machine is not connected to any power source.