Description Of Gas Console Pgc1-2 Art. 477; Diagram Of The Gas Console Pgc1-2 Art. 477 Pneumatic System - Cebora PLASMA PROF 164 HQC Service Manual

CEBORA S.p.A.
This system relies on the principle according to which the Power Source output voltage is
greatest, approximately 260 Vdc, while with the pilot arc or transfer arc this voltage is
determined by the cutting conditions (level of current, material to be cut, type of gas, etc.), thus
significantly below 200 Vdc) (approximately 150 - 190 Vdc with pilot arc lit).
The pilot arc has a maximum duration of 1 s, after which if cutting has not begun, thus the
control board (38) has not received from the settings board (58) the signals to switch to transfer
arc, the pilot arc is interrupted until the next start command.
The Unit HV18 contains a microswitch that detects when the safety guard is closed. Its
intervention stops the Power Source, displaying the corresponding error code on the control
panels.

2.6 - Description of Gas Console PGC1-2 art. 477.

2.6.1 - Diagram of the Gas Console PGC1-2 art. 477 pneumatic system.

The PGC1-2 Gas Console is a control station to select the process parameters and select the
gas types and flow.
It is divided into two units:
− PGC1 powered by air, nitrogen N2 and oxygen O2 gases;
− PGC2 powered by gas H35 (blend of 35% hydrogen H2 and 65% argon Ar) and F5 (blend of
5% hydrogen H2 and 95% nitrogen N2).
The Gas Console PGC1 is equipped with an operator panel, the main one in the system, which
makes it possible to choose the type of process, set the operating parameters, enable the test
functions and display the operating status of the system.
Inside are 4 pneumatic circuits configured as shown in the diagram in fig. 2.6.1, each of
which is equipped with a solenoid valve to select the type of gas, pressure regulator to adjust the
gas pressures, and flow detector to detect the gas flow in the circuits.
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