MK Products CobraMig 260 PS/Feeder - Manual (Page 13)

CobraMig 260 Owner's Manual - Page 7
WELD VOLTAGE
The weld voltage knob adjusts the power supply output voltage. It is infi nitely
variable between the ranges. The scale surrounding the WELD voltage
control is a relative scale only; it does not represent actual voltage.
RANGE SWITCH
The “LO” range provides from 12 to 22 volts and the “HI” range provides
from 22 to 32 volts.
POLARITY JUMPER
The polarity jumper allows for easy reversal of the electrode polarity.
For Reverse polarity (DCRP) plug jumper into the plus (+) connector
below jumper plug. For Straight polarity (DCSP) plug jumper into minus(-)
connector below jumper plug. The work cable plugs into whichever connector
is not used for the polarity jumper.
COBRAMATIC CONTROLS
ON/OFF SWITCH
Placing the switch in the “ON” position energizes the feeder circuitry and the
power indicator light.
WIRE SIZE SELECTOR SWITCH
The wire size selector switch changes the torque of the slave motor for the
wire you are using. When in the ".030-.035" aluminum only position, the
slave motor produces approximately 2 lbs. inches and approximately 3 lbs.
inches when in the "all other wires" position.
NOTE:
Operating the cabinet with the switch in the wrong position
will cause wire feed diffi culties.
POSA START CONTROLS
The Posa Start Control selects a Run-in Speed which is slower than the
actual welding speed. After arc initiation, the wire feed speed control is
transfered to the potentiometer in the torch handle. The scale surrounding
the Run-in Speed Control is a relative scale only; it does not represent
actual inches per minute, but a percentage of the speed dialed by the torch
potentiometer.
REMOTE VOLTAGE (See Optional Kits)
This option enables the weld voltage control to be adjusted from a remote
hand pendant.
TIMER KIT (See Optional Kits)
This option provides Spot Welding or Stitch Welding operation from the
Cobramig 260. In the Spot Mode, timing can be adjusted for a welding time
of .5 to 4 seconds and a Burnback time of 0 to .25 seconds. In the Stitch
Mode, the unit can be commanded to "Turn On" from .5 to 4 seconds and
"Turn Off" from .25 to 1 second.
DIGITAL VOLT/AMP METER (See Optional Kits)
The LCD meter provides an alternating display of Volts and Amps during and
after welding for up to 1 minute using a built-in memory.
GAS CONTROL/TRIGGER LATCH (See Optional Kits)
The Gas Purge/Trigger Latch Kit is a dual function kit. The kit includes an
easy to install interface control PC board, a 24VAC solenoid for pre and post
purge control, a modifi ed valve stem for the welding torch and, a front panel
switch for activating the Trigger Latch mechanism.
The gas control times have been preset to 0.5 seconds pre-purge and 1.0
seconds post-purge. This offers an optimum amount of inert gas shielding
prior to striking the arc and after the arc has been extinguished.