Lincoln Electric IM960 RED-D-ARC LN-25 PRO EXTREME - Manual (Page 20)

B-5 OPERATION B-5
Wire Feed Speed, CC Operation
When Across the Arc models are operated with CC
power sources, the wire feed speed changes as the
arc voltage changes. When the arc voltage increases,
the wire feed speed will increase; and when the arc
voltage decreases, the wire feed speed will decrease.
To preset the wire feed speed on CC power sources:
1. Set the Wire Feed Mode switch inside the LN-
25™ PRO EXTREME to "CC".
2. Refer to the Figure B.1a graph for the setting for
the wire feed speed knob setting. Select the hori-
zontal line representing the Desired Wire Feed
Speed. (See Figure B.1a arrow for 375 in/min.)
3. Select the diagonal line representing the Arc
Volts. (See Figure B.1a for 29 volts.)
4. Determine the vertical line representing the CC
Wire Feed Speed setting where the above two
lines cross. (See Figure B.1a arrow line for 450.)
Set the LN-25™ PRO EXTREME wire feed
speed knob to this value.
CC WFS dial setting = desired WFS x 35
Arc Volts
(See Figure B.1a)
RED-D-ARC LN-25™ PRO EXTREME
50
100
150
200
250
300
350
400
450
500
550
600
650
700
50 100 150 200 250 300 350 400 450 500 550 650 700
35
31
29
27
25
23
21
19
17
15
33
600
V
CC
FIGURE B.1a
A constant voltage (CV) power
source is recommended for flux-
cored arc welding (FCAW) and
gas metal arc welding (GMAW)
to obtain code quality results.
However, this wire feeder may
also be used with a constant cur-
rent (CC) power source to obtain
passable results for noncritical
quality applications.