Control Schematic (G3327; Electrical Diagrams - Lincoln Electric PRO-CUT 55 Service Manual

Control Schematic (G3327)

+15V
CUTTING CURRENT
SETPOINT LOCAL
...
X10
J2
TCF6000
6
MAX 4.75K 100K 3
D
CONTROL_POT
J2
CUTTING I R45 R47
8
CONTROL S
POT
P C21
MIN C23
1.0
L
35V
A J2 +5.5V
9
Y
COM
COM
X10
TCF6000
100
J2 2 /PURGE
R52
5
PURGE
C26
PUSHBUTTON B
1.0
O
35V +5.5V
A
R
COM
D
TCF6000
X10
100
J2 5 /SAFETY_RESET
R54
3
RESET
PUSHBUTTON C28
1.0
35V
COM
+5.5V
TCF6000
PSI X10
100
J3 7 /PSI_OK
R56
6
C30
PRESSURE SWITCH
J3
1.0
2
35V
+5.5V
COM
10.0K
R158
1.30K
PRIMARY CAP
OPTOCOUPLER
J5
6 R159
1.21K
J5
2
+15V
CW
1K
R189
OUTPUT
1 NULL NULL 8
BOARD
J3 243 243
3 7
INPUT V CC
R39 R34
5 X6 511 511
2 INPUT OUT 6
R42 R96
C47 4
V NC 5
EE
OP27 C53
C15
0.1
50V
COM
10.0K
J3 243 COM
R38 R37 R93
4
C35
243
COM
+15V
J3
12
COM CW
1K
R192
7.68K
1 NULL NULL 8
J3 243 R40
3 7
INPUT V CC
R33 R36
8 X4
2 INPUT OUT 6
243 R28
C36 4 6
V NC 5 X1
EE 3.32K
OP27 LT1014
C16
0.1 5
50V
10.0K
J3
COM
7 R32 R30 R26
C37
243 243
COM
COM
POWER TO: DISPLAY TO: OUTPUT TO: CT & TO: POWER
SUPPLY BOARD BOARD TSTATS BOARD
J1 J2 J3 J4 J5
1 2 1 5 1 8 1 3 1 4
3 4 6 10 9 16 4 6 5 8
NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not
available from Lincoln Electric. This information is provided for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result
in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.
PRIMARY CURRENT
XFORMER
125:1
+15V 10.0K
R154
10.0K
R152 R155 TCF6000
COM
X10
SHORT = TRIGGER ON 221K
OPEN = TRIGGER OFF
3.74K 4
10.0K
3
TRIGGER CIRCUIT X3
OPTOCOUPLER R156
J3 LM224 1
R153
11
2
10.0K
C39
TRIGGER ON = H
TRIGGER OFF = L
COM COM
10.0K
R165 10.0K
+15V
332
R166
R11
R167 TCF6000
R12
X10
332
221K COM
R13
332 6
12
R14 X3
R17
THERMOSTAT(S) 332 LM224
J4 14
R164 10.0K
1
13
10.0K
SHORT = TEMP OK = H
J4 C13 OPEN = OVERTEMP = L
4
COM COM
10.0K
R160 1 TACH INPUT NC 14
2 13
Ic NC TCF6000
X18
COM C72
12 X16
3 / GND
.0047
50V 4 IBIAS TACH INPUT 11
7
COM COM
5 10
ISOURCE IBIAS
COM
9
6 NC V+
+5.5V
7 ISINK 8
NC
C40 LM2907 10.0K
CW
C71 COM
1.0
COM
35V
COM
150p
C43
50V
SENSE_AMPS
R70 X16
47.5K TCF6000
2
7.68K 6
X1 1
R73
D14
3 LT1014 C18
R72 .47
50V
1.50K
COM
COM
TCF6000
X16
4
I_SET
GAIN = 80.0 V_PWM
1V = 12.50 A
2.43K
CW
10
10K X1
221 221 R98
47.5K LT1014
8
R35 R24 R48
7 9 D21
1.0A
C17 C31
30V
C44
150p
COM COM 50V COM
C45
+15V
R89
100K 2700p
50V
18.2K
221K
1.30K
R83
TCF6000
X16
COM 5
5 10.0K
X3
100K
R84
12 7
1V = 68.07mA LM224
X1
R80
LT1014
14 6
R78
C4
13 R81
C22 .47
1.21K
10.0K D23 50V
150p
COM 50V COM
COM
R79
221K

ELECTRICAL DIAGRAMS

J4
3
D15 D16
C56
.15 1N4936 1N4936
100V
J4
6
D17 D18
1N4936 1N4936
26.7 26.7
R121
R122
R112
3.32K
+5.5V
8.0MHz 4.75K
130
R137
Y1 Vdd
C46
X11
10p RES
100V
S-8054HN
+5.5V Vss
C52
10p
100V
COM
+5.5V
COM
1
52
Vss VRH
C14
2 6
MODB R/W
19 /IRQ VRL 51
18 5
/XIRQ E
COM
8 XTAL /RESET 17
/OUTPUT
7 X5 PA4 30
EXTAL
TRIGGER
R178 10 29 AIR_SOLENOID
PC1 PA5
PILOT_SWITCH
10.0K 16 PC7 PA6 28
COM
THERMOSTAT OK
14 35 ELECTRODE_SOLENOID
PC5 PB7
CONTROL_POT
47 27 PRIMARY_POWER
PE2 PA7
/PURGE READY
12 PC3 PB0 42
/SAFETY_RESET
9 41 SAFETY
PC0 PB1
/PSI_OK
AIR_LOW
13 PC4 PB3 39
PRIMARY VOLTAGE THERMAL
43 PE0 PB4 38
31 44
PA3 PE4
34 PA0 PA1 33
ELECTRODE_AMPS
45 4
PE1 AS
/RETRACT_ARC
32 20
PA2 PD0
/PIP
15 PC6 PD1 21
I_SET
36 3
PB6 MODA
+5.5V
X15 40 PB2 PB5 37
GND
5 /CLR 4
23 PD3 (MOSI) PC2 11
R95 VOUT
SDI
6 3
24 46
511 PD4 (SCK) PE5
+5.5V VDD CLK
7 2
25 PD5 (CS_D/A) PE6 48
C29 VREF
/LD
8 1
MS-001BA 22 50
PD2 (MISO) PE7
26 49
Vdd PE3
68HC711E9
COM C74
SENSE_AMPS
COM
COM COM
TCF6000
X16
3 10
10.0K
/RETRACT_ARC 7.68K
8 X2
R104
33074A 9
18.2K
COM
COM
SENSE_AUX +15V
POWER SUPPLY
D5 D6
7805
1.0 5W LM350
X7 X8
R1
IN OUT
IN OUT
S18647 ASSY S18395-13 ASSY
D2
ADJ
D1
GND
AUX XFMR J1
1
C1
TP1 3300
C3
50V 50V
18VAC 1000 NOTE:
15J
35V RESISTORS MAY NOT BE PRESENT
CT J1
2
C7 C9
D8
TP2
50 27
18VAC
50V GND
50V 35V
15J
-15V
IN X9 OUT
J1
7915
4
D3
D7
D4
3
1
X2
33074A
2
5
+15V +15V
7
X2
33074A
6
7 C68 C69 7 4 C63 C64 4 4
COM
X6 X4 X1 X2 X3
10
X3
OP27 COM OP27 LT1014 COM LM224
33074A
8
LM224
9 4 C2 C8 4 11 C65 C66 11 11
COM -15V
16 15
14 1 13
J3 J3 J3 J3 J3
X16
2 NOTES :
3 1 2 5 4 8
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
J1 J2 J4 J4 J5 J5 WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
NUMBER.
Vct = 0.0057 Ip
+15V
C57
C55
C54
1.0
1.0
35V
35V
COM
15 Vin OUTA 11
4 14
I+ OUTB
COM
X12
7 10
+5.5V COMP SYNC
C59
13
100p 6 V- Vc
100V
5 12
V+ GND
V_PWM
8 2
12 CT Vref
X2
14 C60 16 1
SHUT CLIM
1.50K C58 33074A
.018
13 9 PWM 3
RT I-
3 50V
SG3846 SG3846
Q5
COM
1
2N4403
2
C48
330p
100V NOTE:
Shutdown Condition:
CW
90 Amps = 0.25V
10K
126 Amps = 0.35V
COM
COM
ELECTRODE_SOLENOID
SENSE_AUX
100K
R183 R188
39.2K
DZ4
5.1V C76
1.0
1W
50V
PRIMARY_POWER
+5.5V
+15V +5.5V -15V
1.30K 475 1.30K
D9
LED1 LED2 LED3
C5
SOME OR ALL OF THESE
100
50V
POWER SUPPLY
COM COM
CALIBRATION
+5.5V
7
C75
X15
MS-001BA
5
+5.5V COM
13 8 8 Vdd 26 9
C25
C20
4.7
C10 C24 GENERAL INFORMATION
C19 X5
X16 X10 35V X18 C73
X12 C41
C34
4.7
ELECTRICAL SYMBOLS PER E1537
TCF6000 TCF6000 68HC711E9 LM2907
35V
SG3846 CAPACITORS =
RESISTORS = Ohms (
Vss
12 1 1 1 12
DIODES =
FILENAME: G3327_2C1
COM COM
REF. DESIGNATORS SKIPPED:
C11,C12,C27,C38,C49,C51,C67,C70
R 15,R16,R25,R41,R50,R60,R64-R66,R71,R74,R75,R86,R90,R92,R148,R150,R151,R161-R163
D24,X17
G-7
+15V
C32
D10
C42 C50 5 0.1
Vin + Vc 3A
0.1 4.7 50V
4 40V
X13
50V 35V OUT GATE DRIVE
3 COM PULSE XFMR
GND
COM 3
2
INV IN J5
D11
1 3A
267 N.I. IN COM
40V
R140
D12
3A
R141
40V
267 1
N.I. IN
X14 4
OUT 7
J5
5
DZ1 Vin + Vc
D13
12V 2 C33
INV IN
1W DZ2 3A
0.1
40V
12V 3
C61 GND 50V
1W
1.8
20V
COM
C62
1.0
35V
+15V
COM 825
R102
3.74K
Q1
R99
2N4401
9
J3
D25
COM
OPTOCOUPLER
4.75K
+15V
AIR SOLENOID
825
R29
-15V
AIR_SOLENOID
3.74K
PILOT_SWITCH Q2
R58
2N4401
3
J3
D26
COM
OPTOCOUPLER
4.75K
+15V
IGBT DRIVE
825
R91
-15V
3.74K
Q3
R100 2N4401
10
J3
D27
COM
OPTOCOUPLER
4.75K
ELECTRODE SOLENOID
+15V -15V
RELAY
10.0 10.0
J5 COILS
R110 R111 1
C6
.0047
D20
1400V
5
J5 PRE-CHARGE
D
DISABLE
Q4
6.81K
G 4A
R109
100V
S
COM
D
R115 7
READY
I
J2
3.32K
S
P
L
R116 10
A PIP
J2
Y
3.32K
R117 2 AIR_LOW
B
J2
3.32K O
A
R
4 THERMAL
R118 D
J2
3.32K
MACHINE OVERVIEW
TRANSFER
SHUNT
CUT
DIODES
CUT
WINDINGS
WORK
NOZZLE
PILOT
WINDINGS
ELECTRODE
L1 SHUNT
PILOT
DIODES
LAST NO. USED
R- 196 X- 18 Y- 1
C- 76 Q- 5 TP- 2
MFD ( .022/50V UNLESS OTHERWISE SPECIFIED)
D- 27 DZ- 4 LED- 3
LABELS
1/4W UNLESS OTHERWISE SPECIFIED)
1A, 400V (UNLESS OTHERWISE SPECIFIED)
SUPPLY VOLTAGE NET
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
FRAME CONNECTION
EARTH GROUND CONNECTION
G3327
9-4-98D
PRO CUT 55