Westweld FLG-200HD, Manual Instruction

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Note: the cable must be with 360°shield to ensure the two terminals of the shield connect with the
machine cover, to get best shield.
Table 4-5 Control cable pin signals of plasma power source to CNC
Plasma power
source
Signal name Function
CNC
Plug Pin Input/
Output
Input/
Output
1 Grounding Cable shield ground connect
2
3
Input
RX-
RX+ RS-422 receiver
RS-422 receiver
Output
4
5
Output
TX-
TX+ RS-422 transmitter
RS-422 transmitter
Input
6
7 RS-422 reference
Not use RS-422 ground cable
No
8
9
Output
Action 1E(-)
Action 1C(+) Inform CNC arc transferred already, default action
1 signal
Input
10
11
Output
Error E(-)
Error C(+)
Inform CNC some errors Input
12
13 Not use
Not use
14
15
Output
Not ready E(-)
Not ready C(+)
Inform CNC plasma cutting system not ready Input
16
17
Output
Move 2E(-)
Move 2C(+) Inform CNC arc transferred already, default action
1 signal
Input
18
+24VDC
reference
19
20
Output
Move 3E(-)
Move 3C(+) Inform CNC arc transferred already, default action
1 signal
Input
21
22
Output
Move 4E(-)
Move 4C(+) Inform CNC arc transferred already, default action
1 signal
Input
23
24
Input
Corner (-)
Corner (+)
CNC inform plasma power source approach the
corner,to decrease current(Default reduce 50% of
the cutting current)
Output
25
26
Input
Piercing finish(-)
Piercing )
CNC inform plasma power source keep the shield
gas preflow, until CNC send out signal again.
This function use for cutting shield gas cutflow less
than preflow, need to keep big preflow shield gas
for piercing; it’s also used for shield gas control
under other special situations.
Output