ESAB PCM-875A Installation, Operation And Maintenance Manual page 97

SECTION 6
230V Schematic Part 2
R13
.82UF 630VDC
K1 K1
1
T3 L3 L2
2
P.A.
3
PCM-875A Plasmarc System
1 2 3
(SEE CHART)
V V
(CONTROL BOARD)
330K ,1W
.01UF,250 VAC
C21
PILOT
K1
ARC
T2 T1 L1
C20 .022UF, 1KV
GND 3
.01UF
1KV
P1-1
H1
X1
1
0.047uf
660V
2500 PF,15KV
H2
P1-6
X2
(+)
P1-2
(-)
P1-3
4 5 6
TB4-1
ARC ON
SIGNAL TO CNC
TB4-2
(+) (-)
TB4-3 START SIGNAL
TB4-4 FROM CNC
TB4-5 VOLTAGE DIVIDER
TB4-6 SIGNAL TO CNC
P2-3
3
2
P2-4
1
6
5
4
P1-12
1 2
P1-11
P6-1
1
P6-2
2
P2-2
1
75mA
2
60V
P2-3
P5-5
+
-
P5-6
P5-1
.022UF
250VAC
P5-2
.022UF
250VAC
A
115 VAC
B
.01UF
1KV
H2
X2
2
2500 PF,15KV
H1
X1
Troubleshooting
1
4T
TORCH SWITCH
2
SHIELD
6-13