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G5366
CHANGE DETAIL:
NEW
ENGINEERING CONTROLLED
No
MANUFACTURER:
LN-25 ACROSS THE ARC MODEL
21
Positive
Voltage
Feedback
TOROI D
21
TOROI D
67
WORK
CLIP
FEEDPLATE
Input
Voltage
Protection
INPUT ELECTRODE
CABLE CONNECTION
N. A. CAVIT Y NUM BERI NG SEQUENCE AS VI EW ED F ROM COM PONENT SI DE OF BOARD.
N. B. CAVIT Y NUM BERI NG SEQUENCE AS VI EW ED F ROM LEAD SI DE OF CONNECTOR.
N. C. T O GGLE SWITCHES AND POTENTI OM ETERS SHOW N F ROM CONNECTI ON SI DE OF SWITCH.
Model
Ranger 8,9
Classic
Ranger 250, 305
Commander 300,400,500
(Common Analog
Controls)
K449
Recommended
Recommended for CV
Recommended for CV
Across the Arc
all CV operation.
operation. (Wire
operation.
Feed Module
Required)
¤ ¤
CODES 11144, 11145, 11146
Gas Solenoid
Circuit
Wire Drive
Circuit
TOROI D
TOROI D
J2
8
7
Meas ur eB t oU
130 Hz @ 50 i n/ mi n
W
B
1. 85 k Hz @ 700 i n/ mi n
GAS
MOT OR /
SOLENOI D
GEARBOX
1
TOROI D
1. 9VDC @ 50 i n/ mi n
2
20. 1VDC @ 700 i n/ mi n
R
3
8s ec av er age Cur r ent l i mi t
U
4
TACH.
Located behind the insulating
=3. 5Amps
B
5
wire drive panel. Remove the
6
( Li mi ti ss of t war es et )
wire drive ably to gain access.
Access this connector
by removing the wire
drive asbly.
Located behind the wire drive
(European Models Only)
MO V ASBLY
Not a PC board; no schemati
c.
GND-S1
1M ohms
1M ohms
GND-S2
GND-S5
.0047/.005 mfd,
.0047/.005 mfd,
1400VDC
1400VDC
WFS
Control
Located behind
Circuit
the glastic panel
next to the motor.
Bus s bar f r om i nput
s t ud t oc ont ac t or
CONTACTOR
300A 60%
250A 100%
578
Coi l meas ur es 4. 4ohms .
507
0VDC Open
Contactor
3. 0VDC Cl os ed
12 VDC c oi l
PW M Cont r ol l ed
V350
DC-400, 600
Square Wave TIG
Miller Inverters
STT II
Note:
(Common Digital
300/355
Controls)
welding processes
perform better using
Recommended for
Recommended
Not recommended
Recommended
Not recommended
constant voltage power
CV operation.
for CV and CC
for CC operation
for CV voltage
for STT operation.
sources. Be sure the
Not recommended
operation.
because the
sense
proper power source is
for use when
customer may
operation.
used for your application.
pulse welding.
experience short
Not
Contactor life may be
contactor life from
recommended
shortened in applications
inductive nature of
for use when
using CC machines with
the power source.
pulse welding.
high OCV.
Not recommended
with high frequency
TIG starting.
This diagram is for reference only. It may not be accurate for all machines covered by this manual.
Input Power
15V-110VDC
+35V
ARC
VOLTAGE
FEEDBACK
21
COM
67
S1
CC
SENSE
COM
+VM
+Vin
POWER
COM
SUPPLY
667
J1-1
+
Vin
.05uF
VOLTM ETER
-
621
J1-3
COM
ISO
(MOTOR FETS ARE
+ VM
COM
BOTH OFF WHEN INPUT
AVERAGE
CURRENT
VOLTAGE DROPS
DRIVE
PWM
LIMITING
BELOW 20V)
MOTOR
CONTROL
PULSE BY PULSE
BRAKE
PEAK CURRENT
Mot or+
541
J4-14
LIMIT
COM
Mot or -
539
J4-13
+35V
Gas Sol enoi d+
552
690
J2-3
.05
Gas Sol enoi d-
691
J2-6
4. 25 VDC when gas f l owi ng
COM
Coi l meas ur es 21 ohms
PW M c ont r ol l ed
COM
553
+13.5V
Located under the cover
13. 5VDC T ac h Suppl y
512
J4-5
at the rear of the feeder
10K
Tac hSig n al
TACHOMETER
555
J4-12
Tach COM
500
J4-7
COM
+5V
WIRE F EED SPEED
10K
CONTROL
Ohms
POT Suppl y
631
J4-9
POTENTI OM ETER
1
W ip e r
632
J4-1
2
3
100K
COM
Located on the case front.
633
J4-8
Remove the wire drive
W i per t oCOM
COM
asbly to gain access.
N. C.
5VDC at 700 i pm
0VDC at 50 i pm
SWITCH
INPUTS
COM
COM
COM
523B
J4-4
+13.5V
522
J4-10
Located on front of case,
J2-1
J14-7
J4-3
J4-11
J14-6
J2-4
above W FS control knob.
523
621
500
509
530 608
The W FS switch shown in low range.
The low W FS range is 50-350 in/min.
The high W FS range is 50-700 in/min.
509
523
MODE
CC
CV
The mode switch is
shown inCC mode.
Located inside case.
COLD
INCH
N. O.
500(B)
530(B)
Located inside case
below voltmeter.
PURGE
N. O.
621
608
Located on rear
of case.
Inch/Purge/Mode
Most semiautomatic wire
Input Switches
CAVITY NUMBERING SEQUENCE
(COMPONENT SIDE OF P.C. BOARD)
1
2
1
3
J1
J2
3
4
4
6
1
7
J4
J3
8
14
INPUT VOLTAGE
LN-25 FEEDHEAD
MONITOR
P.C. BOARD
Sc hemat i cG4616
+35V
J14-1
4.5 A PEAK
J14-9
CURRENT
LIMIT
+35V
+15V
U
COM
+13.5V
U
+5V
+15V_ISO
+Vin
(667)
J3-10
667
JS
JC
(624)
J3-14
624
+V
MOTOR SUPPLY
JR
VOLTAGE MONITOR
(624)
+V
REMOTE BD
(optional)
J3-6
J3-6
621
621
500
J3-15
COM
COM
+13. 5V
+13. 5V
TIMER BD
(optional)
(512)
J14-4
512
(606)
606
JT
TI MER
J14-8
ACTIVATE
(500)
COM P
500
SOLENOID
J14-2
VIM_PEAK
REF
COM
PWM_DRV
OLD CONTACTOR BD
SOL_DRV
+13. 5V
+13. 5V
+13. 5V
JR
(optional)
PSOC
(512)
+V
J3-13
J3-13
512
512
(606)
J3-1
606
JC
(530)
C LOGI C
JS
530
J3-11
ACTIVATE
COM P
JR
TI MER
FEEDER
REF
TIMER BD
(optional)
(530)
530
J14-10
JS JT
TI MER
530A
J14-5
(530A)
TRI GGER
530A
J3-3
JS
JC
LOGI C
J3-12
530A
JR
WFS POT
OLD
REMOTE BD
(optional)
+V
COM
(622)
(622A)
J3-16
622
JS
JR
J3-5
622A
JC*
COM
J1-4
622A
COM
For programming at LECo
J1-2
500A
factory only.
3.3K
J3-8
500A
JS
JR
Not field reprogrammable.
JC*
J3-7
500
(500A)
(500)
/SS MOSI
DATA SCLK XRES
COM
J2-2
J2-5
J4-6
J3-2
J3-4
-DC
COM
OLD
REMOTE BD
(optional)
Gun Trigger
Circuit
OPTI ON BOARD EXPLANATI ON
Ther ear et hr ee opt i onal boar ds av ai l abl ef or t he LN- 25. The wi r i ng as s oc i at ed
wi t ht hes e boar ds i si ndi c at ed by das hed l i nes . and t he abbr ev i at i ons ar eas
f ol l ows :
J S -St andar dW i r i ng, No Opt i on Boar ds I ns t al l ed. Thi swi r i ng j umper mus t be i ns t al l ed i fr emot ek i ti snot pr es ent .
J C -Opt i onal Cont ac t or Boar d.
J R -Opt i onal Remot eBoar d.
J T -Opt i onal Ti mer Boar d. I ft i mer k i ti snot i ns t al l ed, and r emot eboar di snot pr es ent ,t hen j umper i si ns t al l ed i nJ 11.
I fr emot eboar di spr es ent ,t hen j umper i si ns t al l ed i nJ 6 of r emot eboar d.
The Opt i onal Boar ds ar edi v i ded on t hi spr i nt f or c l ar i t y .
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OWNED BY LINCOLN GLOBAL, INC. AND MAY NOT BE DUPLICATED, COMMUNICATED
PROPRIETARY & CONFIDENTIAL:
TO OTHER PARTIES OR USED FOR ANY PURPOSE WITHOUT THE EXPRESS WRITTEN PERMISSION OF LINCOLN GLOBAL, INC.
MANUFACTURING TOLERANCE PER E2056
DESIGN INFORMATION
REFERENCE:
EQUIPMENT TYPE:
LN-25 (ACROSS THE ARC)
UNLESS OTHERWISE SPECIFIED TOLERANCE:
ON 2 PLACE DECIMALS IS ± .02
DRAWN BY:
G4198-1
ON 3 PLACE DECIMALS IS ± .002
M. DIDION
MACHINE SCHEMATIC
SUBJECT:
ON ALL ANGLES IS ± .5 OF A DEGREE
SCALE:
MATERIAL TOLERANCE (" ") TO AGREE
t
ENGINEER:
M. DIDION
WITH PUBLISHED STANDARDS.
MATERIAL
APPROVAL
PROJECT
NA
CRM36946
APPROVED:
NONE
10/4/2004
DO NOT SCALE THIS DRAWING
DISPOSITION:
DATE:
NUMBER:
GENERAL INFORMATION
ELECTRICAL SYMBOLS PER E1537
1
5
COLOR CODE
J14
B -
BLACK
10
6
WHITE
R -
RED
1
8
U -
BLUE
16
9
NOTE:
OLDER OPTION BOARDS MAY BE LEFT
IN CIRCUIT OR REMOVED. IF REMOVED,
A PROPER JUMPER PLUG NEEDS TO BE
INSTALLED.
OLD
CONTACTOR BD
(optional)
(500)
to Timer Bd
(621)
C L OGI C
(621)
OLD
REMOTE BD
(optional)
(512)
+V
(606)
TI MER
(530)
C LOGI C
(530A)
(530A)
J3
Located on the lower left
A
of the front of the case.
B
C
D
GUN TRI GGER
I NPUT
E
TRI GGER
CONNECTOR
Tr i gger
13. 5VDC when Open,
0VDC when Tr i gger Cl os ed
1
1
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DOCUMENT
DOCUMENT
NUMBER:
REVISION:
G5366
A
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