Lincoln Electric LN-25 SVM179-B Service Manual page 91

G-13
sChEmaTiC - lN-25 prO - COmplETE maChiNE CODEs 11746, 11747 - (G5683-3) pG2
ElECTriCal DiaGrams
G5683-3
ENGINEERING CONTROLLED CHANGE DETAIL: A.02, COMPLETELY REVISED
MANUFACTURER: No
TIMER P. C. BOARD CIRCUIT
Timer Board Summary
Has potentiometers for burnback, postflow and preflow.
Preflow range is 0 to 10 sec.
Burnback range is 0 to 0.25 sec.
Postflow range is 0.25 to 10 sec.
Receives "Gas Flow Enable" signal.
Outputs 100 msec pulses to turn Gas Flow On, Gas Flow Off.
(LOCATED ON CASE FRONT)
ADJUST KNOB ADJUST KNOB
+5V +5V +5V +5V +5V
CW= +5
CCW= 0V 10K 10K
PREFLOW
POSTFLOW
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
(LOCATED BEHIND WIRE
REEL COVER)
ADJUST KNOB
10K
BURNBACK
POT.
COM
15V
5V
COM
J60-8
J60-7 J60-6 J60-5 J60-4 J60-3 J60-2 J60-1
NOT
607 606A 601
608 605 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.
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 ANALOG
NONE
DRAWN BY: T. PEARN
IF PRINTED
SUBJECT: MACHINE SCHEMATIC
@ A2 SIZE
t ENGINEER: ENYEDY
UNITS:
MATERIAL APPROVAL PROJECT
NA
1/26/2011
APPROVED: - INCH
DISPOSITION: DATE: NUMBER:
G-13
2 2
PAGE ___ OF ___
DOCUMENT DOCUMENT
NUMBER: REVISION:
G5683-3
REFERENCE: A.02
XM6214-C G5683-2
lN-25™ prO