5
16.
The air regulating and filtering device: to adjust the air pressure and filter the water and grease in the air;
17.
Connector of arc voltage output: output 1:1 arc voltage , plug 1 is positive and plug 2 is negative, connect it to the
CNC control system with cabtyre cables which is ≥500VDC.
18.
Controlling signal: to connect with the CNC cutting machine.
Plug 1 and 2 is the signal outputs of arc striking, it is in short circuit after arc stroke, and it can control the
signals which is lower than 125VAC/0.3Aand 30VDC/1A;
Plug 3 and 4 is the control connector to start the plasma cutting machine, this connector can only be
controlled by one group of switches.
19.
The protection grounding terminal: to connect the protection grounding cables.
5
System constitute
LG-125HA is constituted by one LG-125HA plasma power source and a QFK-C arc strike ignition, the arc strike ignition is
installed on the walking part of the CNC machine tool, and it is connected with the plasma power source by control cables.
5.1
Some Necessary Equipment Of Cutting
No.
1
2
3
4
5
6
7
8
Name
Plasma
power
source
Arc strike
ignition
General
control
cables
Plasma
cutting
torch
Distribu
tion box
Input power
cables
Work piece
cable
Compressed
air
Model
LG-125HA
QFK-C
QFK-C
HYC-
125A
3phase
380V
≥6mm
2
×4
≥35mm
2
≥280L/min
Note
：
Note: “The input power cable” is prepared by user according to their actual requirement.
5.2
The cutting system connection please see the
（
figure 3
）
Figure 3
