Lincoln Electric IM613 POWER FEED 11 SemiAutomatic Cabinet WIRE FEEDER - Manual (Page 12)

A-4 INSTALLATION
POWER FEED 11
A-4
WORK CABLE CONNECTIONS
Connect a work lead of sufficient size and length (per
the following table) between the proper output termi-
nal on the power source and the work. Be sure the
connection to the work makes tight metal-to-metal
electrical contact.
To avoid interference problems with other equipment
and to achieve the best possible operation, route all
cables directly to the work or wire feeder. Avoid
excessive lengths, bundle the electrode and ground
cables together where practical, and do not coil
excess cable.
Minimum work and electrode cables sizes are as fol-
lows:
When using an inverter type power source, Use the
largest welding (electrode and ground) cables that are
practical. At least 3/0 (85 mm
2 ) copper wire — even if
the average output current would not normally require
it. When pulsing, the pulse current can reach very
high levels. Voltage drops can become excessive,
leading to poor welding characteristics, if undersized
welding cables are used.
WIRE DRIVE GEAR RATIO (HIGH
OR LOW SPEED)
The speed range capability and drive torque of the
Power Feed 11 wire drive can be easily and quickly
changed by changing the external drive gear. The
Power Feed 11 is shipped with both a high speed and
a low speed gear. As shipped from the factory, the
high speed (low torque) gear is installed on the feed-
er. If this is the desired gear ratio, no changes need
to be made.
SELECTING THE PROPER GEAR RATIO
See the Technical Specifications at the front of this
section for feed speed and wire size capabilities with
high and low speed gear ratios. To determine whether
you should be using the high or low speed ratio use
the following guidelines:
- When operating at wire feed speeds above 625 IPM
(15.9 m/m), you must have the high speed gear
(large 30 tooth, 1.6 inch diameter gear) installed.
- When operating at wire feed speeds below 625 IPM
(15.9 m/m), you must have the low speed gear
(small 17 tooth, .95 inch diameter gear) installed for
all wire sizes because using the low speed ratio pro-
vides the maximum available wire feeding force.
Note: If you are feeding only .045” (1.2 mm) diame-
ter and smaller wires you may, at your option, use
the factory installed high speed ratio.
CHANGING THE WIRE DRIVE RATIO
Changing the ratio requires a gear change and a PC
board switch change. The Power Feed 11 is shipped
with both a high speed and a low speed gear. As
shipped from the factory, the high speed (low torque)
gear is installed on the feeder. For identification pur-
poses, the low speed (high torque) gear has 17 teeth
and is .95 inches in diameter. The high speed gear
has 30 teeth and is 1.6 inches in diameter. See
Figure A.2.
FIGURE A.2 — CHANGING WIRE DRIVE RATIO.
Minimum Copper Work Cable Size, AWG
Up to 100 ft Length (30m)
Current
60% Duty
Cycle
500 Amps
600 Amps
3/0 (85 mm 2 )
3/0 (85 mm 2 )
DRIVE
GEAR
PHILLIPS
HEAD SCREW
WIRE
FEEDER