Lincoln Electric LN-25 SVM179-B Service Manual page 84

G-6
sChEmaTiC - lN-25 prO - COmplETE maChiNE CODEs 11387, 11388 - (G5683) pG1
ElECTriCal DiaGrams
G5683
ENGINEERING CONTROLLED CHANGE DETAIL: REVISED LEADS GOING TO P17.
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
(OPTIONAL) MICROCONTROLLER
5V SIGNAL
GAS FLOW
SCHEMATIC =
ENABLE
M21342
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
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
{ ELECTRODE
POT.
MEASUREMENT
FOR DISPLAY
WORK
COM
15V
ARC CURRENT MEASUREMENT
5V FOR DISPLAY & ARC ESTABLISHED
COM
{
J60-8 J60-4 J60-3
J60-7 J60-6 J60-5 J60-2 J60-1
INPUT
CONTROL CABLE
POWER
INPUT POWER
DETECTION
(<18 VAC TO DETECT)
NOT
607 608 606A 605 4B 509B 601
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
VOLTS DISPLAY
7 SEGMENT
{
DISPLAYS
(2 each)
701
J10-10
WFS AMPS VOLTS
set=WFS
actual = AMPS
SIGNALS TO
702 J10-11
DISPLAY & LED
SERIAL SPI
COMMUNICATION
{
77B J10-16
+
MICROCONTROLLER
-
VOLTAGE
76B J10-14
MEASUREMENT
OF REMOTE
VOLTS
75B J10-15 -
POTENTIOMETER
+
SETUP
PUSHBUTTON
67 J10-6
ARC VOLTAGE
FEEDBACK
21
J10-8
+15V
{
-15V
805 J10-9
804 J10-4
801 J10-1
ARC CURRENT
FEEDBACK
802 J10-2
+4V = +500A
COM
-4V = -500A
41 J12-1
42
J12-4 -15V
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
ENYEDY
t ENGINEER:
UNITS:
MATERIAL APPROVAL PROJECT
UF
- 11/16/2007
APPROVED: INCH DATE:
DISPOSITION: NUMBER:
G-6
TO J1
SPI (10 leads) CONTROL
PC BOARD
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)
J6-8 707
FROM CONTROL BOARD (VIA P7)
2 2
PAGE ___ OF ___
DOCUMENT DOCUMENT
NUMBER: REVISION:
G5683
REFERENCE: C
CRM39437
-
Insight
lN-25™ prO