Lincoln Electric IM777 POWER FEED 10M Dual WIRE FEEDER - Manual (Page 37)

B-19 OPERATION B-19
HOT INCH
Hot inch occurs when the trigger is pulled and an arc
is not established. After a 2.5 second period, the
Sequencer will jump to the Weld state and the wire
feeder will run at the preset wire feed speed on the
display. The wire is hot (output is on) at this point.
Start, Upslope, Downslope, Crater, Burnback,
Postflow, etc are all skipped when Hot Inch is activat-
ed.
FOOT AMPTROL
A Foot Amptrol Kit can be installed in order to operate
the output of the machine using a pedal. Located on
the Control Box, the Right encoder turns output on/off
if desired. The left encoder sets the max work point
limit. When the pedal is pressed OCV will be present
and gas will not flow. As soon as the tungsten touches
the work and there is current flow, the gas solenoid
will turn on. If the arc breaks the machine will enter
the postflow state. When the postflow timer expires,
the machine will return to OCV mode and no gas will
flow until the arc is established. If the pedal is
released it turns the machine off, postflow will be
entered until time out. When the postflow timer
expires the machine will return to idle state and wait
for trigger. Preflow will be presettable for external trig-
gers if desired. Triggering machine with encoder will
skip preflow.
WIRE DRIVE -- PC BOARD ADJUSTMENTS
ELECTRODE POLARITY:
The system needs to be aware of the electrode polari-
ty. A DIP switch setting on the Wire Drive PC boards
is used for this purpose. See INSTALLATION Section
“Setting DIP Switches in the Wire Drive”.
GEAR BOX RATIO:
The systems needs to know which gear has been
installed on the Wire Drive, low or high speed. A DIP
switch setting on the Wire Drive PC boards is used for
this purpose. See INSTALLATION section“Wire Drive
Ratio” for information on how to set the DIP Switch.
POWER FEED ® 10M DUAL WIRE FEEDER