Compressed Air; Automatic Purge; Arc Voltage Signal - Helvi PC EVO 76 Manual De Instrucciones

COMPRESSED AIR

A source of clean, dry air or nitrogen must be
supplied to your plasma cutting unit.
The supply pressure must be between 6 and 8 bar.
The flow rate is approximately 330l/min for EP-126
torch and 240 l/min for H.70 and EPT-106.
Air Ttube diameter: Min. 10mm for EP-126 torch and
8mm for H.70 and EPT-106.
Failure to observe these precautions could
result in excessive operating temperatures
or damage to the torch.
An air regulator is included with the unit with
optimum pressure setting set to 5.5 Bar.
Note: the regulator should never be
set above 8 bar.
CONNECTION OF THE MACHINE TO THE CNC
The machine is ready for the connection to
the robotic machines.
• Ensure unit is off and unpluged from the po-
wer receptacle.
• The machine is provided of a 14-pin male
connector located on the back panel. Con-
nect the power contact of the robotic machine
to a 14-pin female connector suitable for the
connector mounted on the machine by fol-
lowing the here shown diagram.
• Connect the male connector to the machine.
Figure 12
Note: LEDs on the front panel of the unit
will show if the input air pressure is not
correctly adjusted.

AUTOMATIC PURGE

Oil in the air is a severe problem and must be
avoided.
The unit is also equipped with an air filter which
captures water and oil vapor.
Water contained in the filter glass gets drained au-
tomatically by disconnecting compressed air by the
unit.

ARC VOLTAGE SIGNAL

AUTION! ELECTRIC SHOCK CAN KILL
Following operation should be carried out
by trained personnel who are aware of the
risks caused by the high voltage.
Carefully read the instructions and speci-
fications of the CNC machine before pro-
ceeding.
By default, the reduction of the output voltage is
equal to 1:50. In the case that the cutting table to be
connected requires a different voltage, it is possible
to set a 1:20 reduction. FIG. 13
• Remove the tin bridge on PS1: 50.
• Tin solder the two points of PS1: 20
Figure 13
EN-8