Lincoln Electric LN-25 SVM179-B Service Manual page 85

G-7
sChEmaTiC - lN-25 prO - COmplETE maChiNE CODEs 11387, 11388 - (G5683) pG2
G5683
(OPTIONAL)
SCHEMATIC =
REVISED LEADS GOING TO P17.
ENGINEERING CONTROLLED CHANGE DETAIL:
No
MANUFACTURER:
TIMER P. C. BOARD CIRCUIT
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.
(LOCATED ON CASE FRONT)
ADJUST KNOB ADJUST KNOB
+5V +5V +5V +5V +5V
CW= +5
CCW= 0V
10K 10K
POSTFLOW PREFLOW
POT. POT.
COM COM
15V SIGNAL
15 ms PULSES
OUTPUT
TOGGLE GAS FLOW
ON/OFF
TIMER KIT
MICROCONTROLLER
5V SIGNAL
GAS FLOW
ENABLE
M21342
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
ElECTriCal DiaGrams
LN-25 PRO WIRE FEEDER
0V = RUN IN ENABLED
TO SWITCH S5 RUN IN
(LOCATED BEHIND WIRE TO REMOTE VOLTS
REEL COVER)
POTENTIOMETER R2
AND POWER SOURCE
ADJUST KNOB
10K
ARC VOLTAGE
BURNBACK
{
POT.
MEASUREMENT
FOR DISPLAY
COM
15V
ARC CURRENT MEASUREMENT
5V FOR DISPLAY & ARC ESTABLISHED
COM
{
J60-8 J60-7 J60-6 J60-5 J60-4 J60-3 J60-2
J60-1
INPUT
CONTROL CABLE
POWER
INPUT POWER
(<18 VAC TO DETECT)
NOT
601
607 608 606A 605 4B 509B
USED
TO CONTROL BD. (VIA P60 plug)
PROPRIETARY & CONFIDENTIAL:
MANUFACTURING TOLERANCE PER E2056
UNLESS OTHERWISE SPECIFIED TOLERANCE:
ON 2 PLACE DECIMALS IS ± .02 in. ( ± 0.5 mm)
ON 3 PLACE DECIMALS IS ± .002 in. ( ± 0.05 mm)
ON ALL ANGLES IS ± .5 OF A DEGREE
MATERIAL TOLERANCE (" ") TO AGREE
WITH PUBLISHED STANDARDS.
DO NOT SCALE THIS DRAWING
PRESET P. C. BOARD CIRCUIT
SCHEMATIC = G4748
(LOCATED ON CASE FRONT)
MOTOR
THERMAL
3 LEDs
WFS/AMPS DISPLAY
7 SEGMENT
{
DISPLAYS
(2 each)
701
J10-10
WFS AMPS
set=WFS
actual = AMPS
SIGNALS TO
702 J10-11
DISPLAY & LED
{
77B J10-16
+
MICROCONTROLLER
-
VOLTAGE
76B J10-14
MEASUREMENT
OF REMOTE
VOLTS
75B J10-15 -
POTENTIOMETER
+
ELECTRODE 67 J10-6
ARC VOLTAGE
FEEDBACK
WORK 21 J10-8
+15V
{
-15V
805 J10-9
J10-4
804
801 J10-1
ARC CURRENT
FEEDBACK
802 J10-2
+4V = +500A
COM
-4V = -500A
41 J12-1
42
J12-4
DETECTION
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.
SCALE:
CONTROL: CLEVELAND
EQUIPMENT TYPE: LN-25 PRO
NONE
DRAWN BY: ddietz
IF PRINTED MACHINE SCHEMATIC
SUBJECT:
@ A2 SIZE
t ENGINEER: ENYEDY
UNITS:
MATERIAL APPROVAL
UF
- 11/16/2007
APPROVED: INCH DATE:
DISPOSITION:
G-7
VOLTS DISPLAY
VOLTS
SERIAL SPI
TO J1
COMMUNICATION
SPI (10 leads)
CONTROL
PC BOARD
SETUP
PUSHBUTTON
SETUP
LED
SETUP
PUSHBUTTON
(BOARDMOUNTED )
J10-12 708
ARC ESTABLISHED OUTPUT
IF V> 10V RELATIVE TO COMMON
0V= ARC NOT ESTABLISHED
TO CONTROL BOARD (VIA P7)
-15V J6-8 707
FROM CONTROL BOARD (VIA P7)
2 2
PAGE ___ OF ___
DOCUMENT DOCUMENT
NUMBER: REVISION:
G5683
REFERENCE: C
PROJECT
CRM39437
-
NUMBER:
I i h
lN-25™ prO