Lincoln Electric IM463-A manual SMAW Stick Operation, Operation with an LN-9or NA-5Wire Feeder, 17

SMAW (Stick) Operation

If welding electrode positive connect the electrode cable to the “+” output studs, and connect the work cable to the “-” studs labeled “SMAW,SAW”. If welding electrode negative, reverse the connections. Do not make any connections to the center pair of output studs.

Set the control panel switches as follows:

------------------------------------------------------------------------

Mode: SMAW

------------------------------------------------------------------------

Output Local or Remote (See “Output Control

Control: Switch”)

------------------------------------------------------------------------

LN-9/NA-5: Off

------------------------------------------------------------------------

Wire Feeder Has no effect in the SMAW mode.

Voltmeter:

------------------------------------------------------------------------

Output

Terminals: On

------------------------------------------------------------------------

If using Local output control, preset the desired welding voltage using the Output Potentiometer and the voltmeter. If using Remote output control, preset the welding voltage using a remote control.

Set the Arc Force potentiometer according to the arc characteristics desired. With certain electrodes, such as low hydrogen alloy electrodes, it is beneficial to set the Arc Force to a high setting. This gives a more forceful arc, less prone to sticking and stubbing. Setting this control too high can lead to excessive spatter. It is often best to start stick welding with the Arc Force set to minimum, and if sticking is a problem, raise the setting until the electrode runs smoothly.

The output terminals will always be “hot”. Before an arc is struck, the ammeter will display the preset current. When an arc is struck, the ammeter will display the actual output current. In the SMAW mode, the voltmeter always displays the output voltage present at the output studs of the DC-650 PRO.

Operation with an LN-9 or NA-5 Wire Feeder

NOTE: Conversion Kits are required for LN-9’s and NA-5’s used with the DC-650 PRO.

For LN-9 and LN-9GMA model codes above 9100 order K442-1.

For LN-9 models below code 9100 order K442-2. For NA-5 models below code 9100, order K442-3. For NA-5 models above code 9100, order K442-4.

Setup and Operation

These wire feeders are called presettable wire feeders. The welding voltage is set on the wire feeder, and then maintained throughout the weld by circuitry in the wire feeder. It makes continuous adjustments during the weld to maintain the proper arc voltage. Because the wire feeder takes control of the arc voltage, the DC-650 PRO must be told that an LN-9 or NA-5 is in control. This is done by setting the LN-9/NA-5 On/Off switch to the “On” position.

To use an LN-9 or NA-5, the Output Control switch must be set to “Remote”. Output voltage control is now done through the terminal strip, or through the wire feeder receptacle, rather than with the front panel Output potentiometer. Additionally, the LN-9/NA-5 switch must be set to “On”. This tells the DC-650 PRO that an LN-9 or NA-5 is in control. The DC-650 PRO Voltmeter will no longer display the preset welding voltage. The preset welding voltage must be read at the LN-9 or NA-5. The DC-650 PRO Voltmeter will display “---” when not welding.

When welding, the Voltmeter displays the welding voltage, as measured on the output studs of the DC- 650 PRO.This voltage may be higher than that displayed on the LN-9 or NA-5, due to voltage drops in the cables and cable connection points. The ammeter displays the actual welding current.

Connection of the Work Lead (21)

In some applications, very precise arc voltage sensing is required. This requires that the wire feeder arc voltage sensing lead, number 21, be extended directly to the workpiece. Instructions follow for extending that lead.

When using the Wire Feeder Receptacle, extend the

21 lead to the workpiece as follows:

1.Turn the input power off.

2.Open the terminal strip door. When installing the wire feeder, do not connect the lead marked 21 coming from the wire feeder control cable to the

– 17 –