Ln-25 pro wire feeder, Electrical diagrams, Preset p. c. board circuit – Lincoln Electric LN-25 SVM179-B User Manual
Page 85: Timer p. c. board circuit
ElECTriCal DiaGrams
G-7
lN-25™ prO
sChEmaTiC - lN-25 prO - COmplETE maChiNE CODEs 11387, 11388 - (G5683) pG2
G5683
LN-25 PRO
MACHINE SCHEMATIC
NONE
-
DO NOT SCALE THIS DRAWING
EQUIPMENT TYPE:
SUBJECT:
UF
CRM39437
2
PAGE ___ OF ___
2
ENGINEERING CONTROLLED
MANUFACTURER:
No
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OWNED BY LINCOLN GLOBAL, INC. AND MAY NOT BE DUPLICATED, COMMUNICATED
TO OTHER PARTIES OR USED FOR ANY PURPOSE WITHOUT THE EXPRESS WRITTEN PERMISSION OF LINCOLN GLOBAL, INC.
PROPRIETARY & CONFIDENTIAL:
REVISED LEADS GOING TO P17.
t
MATERIAL TOLERANCE (" ") TO AGREE
WITH PUBLISHED STANDARDS.
ON ALL ANGLES IS ± .5 OF A DEGREE
ON 3 PLACE DECIMALS IS ± .002 in. (± 0.05 mm)
ON 2 PLACE DECIMALS IS ± .02 in. (± 0.5 mm)
UNLESS OTHERWISE SPECIFIED TOLERANCE:
MANUFACTURING TOLERANCE PER E2056
CHANGE DETAIL:
REFERENCE:
SCALE:
MATERIAL
DISPOSITION:
APPROVAL
DATE:
PROJECT
NUMBER:
DOCUMENT
NUMBER:
DOCUMENT
REVISION:
UNITS:
IF PRINTED
@ A2 SIZE
INCH
11/16/2007
ddietz
ENYEDY
-
DRAWN BY:
ENGINEER:
CLEVELAND
APPROVED:
CONTROL:
C
G56
83
I
i h
LN-25 PRO WIRE FEEDER
MICROCONTROLLER
SETUP
PUSHBUTTON
SERIAL SPI
COMMUNICATION
TO J1
CONTROL
PC BOARD
VOLTAGE
MEASUREMENT
OF REMOTE
VOLTS
POTENTIOMETER
ARC VOLTAGE
FEEDBACK
ARC CURRENT
FEEDBACK
+
-
+
-
J10-12
J12-4
J12-1
J10-14
J10-16
J10-15
J10-11
J10-6
J10-8
J10-1
J10-2
J10-9
J10-4
-15V
+15V
COM
{
+4V = +500A
-4V = -500A
0V = RUN IN ENABLED
TO SWITCH S5 RUN IN
77B
76B
75B
{
TO REMOTE VOLTS
POTENTIOMETER R2
AND POWER SOURCE
ELECTRODE
WORK
41
42
67
21
PRESET P. C. BOARD CIRCUIT
(LOCATED ON CASE FRONT)
SCHEMATIC = G4748
804
802
801
805
{
{
702
701
{
J10-10
WFS/AMPS DISPLAY
VOLTS DISPLAY
7 SEGMENT
DISPLAYS
(2 each)
SIGNALS TO
DISPLAY & LED
VOLTS
WFS
AMPS
MOTOR
THERMAL
3 LEDs
set=WFS
actual = AMPS
SPI (10 leads)
708
SETUP
PUSHBUTTON
(BOARDMOUNTED )
J6-8
707
-15V
INPUT
POWER
SETUP
LED
CONTROL CABLE
INPUT POWER
DETECTION
(<18 VAC TO DETECT)
ARC CURRENT MEASUREMENT
FOR DISPLAY & ARC ESTABLISHED
ARC VOLTAGE
MEASUREMENT
FOR DISPLAY
Timer Board Summary
Has potentiometers for Burnback, Preflow and Postflow.
Preflow range from 0ms to 10s.
Burnback range from 0 to 250 ms.
Postflow range from 50ms to 10 s.
Receives “Gas Flow Enable” signal.
Outputs 16 ms pulses to turn Gas Flow On / Off.
TIMER KIT
(OPTIONAL)
SCHEMATIC =
M21342
J60-6
601
509B
605
607
608
606A
J60-5
J60-8
J60-7
J60-1
J60-2
5V
COM
(LOCATED BEHIND WIRE
REEL COVER)
(LOCATED ON CASE FRONT)
TIMER P. C. BOARD CIRCUIT
POSTFLOW
POT.
PREFLOW
POT.
TOGGLE GAS FLOW
ON/OFF
5V SIGNAL
GAS FLOW
ENABLE
MICROCONTROLLER
J60-4
15V
OUTPUT
15V SIGNAL
15 ms PULSES
+5V
COM
+5V
COM
4B
TO CONTROL BD. (VIA P60 plug)
BURNBACK
POT.
ADJUST KNOB
COM
10K
CW= +5
CCW= 0V
+5V
+5V
10K
+5V
10K
ADJUST KNOB
ADJUST KNOB
ARC ESTABLISHED OUTPUT
IF V> 10V RELATIVE TO COMMON
0V= ARC NOT ESTABLISHED
TO CONTROL BOARD (VIA P7)
FROM CONTROL BOARD (VIA P7)
NOT
USED
J60-3
G-7
NOTE:
This diagram is for reference only. It may not be accurate for all machines covered by this manual.