ESAB Plasmarc EPP-450 User Manual

58
6.7 E-Stop (Emergency Stop) and Main Contactor (K1A, K1B and K1C) Circuits (continued)
SECTION 6 TROUBLESHOOTING
115 VAC WINDING ON "A" COIL OF MAIN TRANSFORMER
K3
4 7 4 7
4 7 4 7
K15
K7
K33
12
K15
11
69
K33
22
69
A
K3
N
STARTING CONTACTOR
69
H
K2
E-STOP LOOP MUST BE CLOSED FOR POWER SOURCE TO FUNCTION
21
FM
TB8-18
E-STOP
TB8-19
J4-A
J1-E
TO T2-X3 TO CB2-2
A
24 VAC
E-STOP BUTTON
J1-F
J4-B
S5
115 VAC
K2K2K2
E-STOP (EMERGENCY STOP) & MAIN CONTACTOR (K1A, K1B, & K1C) CIRCUITS
E-STOP RELAY
R3
F2
R2
L1 L2 L3
T1 T2 T3
L1 L2 L3 T1 T2 T3
L1 L2 L3 T1 T2 T3
K1A
3 PHASE INPUT POWER
K1A
300W
MAIN TRANSFORMER (T1) ASSY
1
300W
1
300W
1
TB5
K1B K1C
TB6
A
L1 T1
L2 T2
L3 T3
K1B K1C
(MC)(MC)(MC)
A A
15A
15A
TB4
F1
R1
K15

ESAB Plasmarc EPP-450 Specifications

General

Brand	ESAB
Model	Plasmarc EPP-450
Category	Welding System
Language	English