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B-26

 

 

OPERATION

B-26

P.0

Press the left button to exit the set-up menu.

P.6

Push Pull Gun, Stall Factor Adjustment. The

 

 

 

 

 

 

stall factor controls the stall torque of the push

P.1

WFS units

 

 

 

motor when using a push-pull gun. The wire

 

Metric = m/min wire feed speed units

 

 

feeder is factory set to not stall unless there is

 

English = in/min wire feed speed units

 

a large resistance to feeding wire. The stall fac-

 

(default)

 

 

 

 

tor can be reduced to stall more easily and

 

 

 

 

 

 

possibly prevent bird nesting.

 

P.2

Arc Display Mode

 

 

 

 

 

Amps = The left display shows Amperage

 

However, low stall factors can cause motor

 

while welding. (default)

 

 

stalling while welding which results in the wire

 

WFS = The left display shows Wire Feed

 

burning back to the tip. If you are experiencing

 

Speed while welding.

 

 

bird nests, check for other feeding problems

 

 

 

 

 

 

before adjusting the stall factor.

P.4

Trigger Memory Recall

 

 

 

 

 

Enable = Selecting memories 2 through 6 with

 

Default value for the stall factor is 75, with a

 

quick trigger pulls is enabled when the option-

 

range of 5 - 100.

 

 

al dual procedure/memory panel is installed.

 

 

 

 

To recall a memory with the gun trigger, quick-

 

To change the stall factor:

 

 

ly pull and release the trigger the number of

 

• Use the VOLTS/TRIM knob to adjust the stall

 

times that correspond to the memory number.

 

factor. Increasing the stall factor raises the

 

For example, to recall memory 3, quickly pull

 

motor torque and decreasing the stall factor

 

and release the trigger 3 times. Trigger memo-

 

lowers the motor torque. Do not increase the

 

ry recall can only be performed when the sys-

 

stall factor more than necessary. A high stall

 

tem is not welding. Disable = Memory selec-

 

factor may increase the occurrence of bird

 

tion is performed only by the buttons on the

 

nesting and a low stall factor may cause the

 

optional

dual

procedure/memory

panel.

 

wire to burn back to the tip.

 

 

(default)

 

 

 

 

• Press the right hand button to save the new

 

 

 

 

 

 

setting.

 

P.5

Procedure Change Method (Three Settings)

 

 

 

 

In order for any of these procedure change methods

 

 

 

 

to function, the "A-Gun-B"switch must be on the

P.7

Push Pull Gun, Gun Offset Adjustment The

 

"Gun" position.

 

 

 

push-pull gun offset calibration adjusts the

 

 

 

 

 

 

wire feed speed calibration of the pull motor.

 

1. "External Switch" (the default value), the

 

The procedure should only be performed when

 

machine will only change the selected procedure

 

other possible corrections do not solve the

 

when the procedure select digital input changes

 

push-pull feeding problems.

A rpm meter is

 

state.

 

 

 

 

required to perform the pull gun motor offset

 

 

 

 

 

 

calibration.

 

 

2. "Quick

Trigger" (the optional value

1), the

 

 

 

 

machine will only change the selected procedure

 

To perform the calibration procedure:

 

when the trigger is released and quickly re-pulled

 

• Release the pressure arm on both the pull

 

while welding in 2-step. Enable=Allows switching

 

and push wire drives.

 

 

between procedure A and procedure B while

 

• Set the wire feed speed to 200 ipm.

 

welding. The exception is that the procedure

 

• Remove wire from the pull wire drive.

 

select digital input is no longer recognized.

 

• Hold the rpm meter to the drive roll in the pull

 

 

 

 

 

 

gun.

 

 

3. "Integral Trigger Procedure" (the optional value

 

• Pull the trigger on the push-pull gun.

 

2), the machine will only change the selected pro-

 

• Measure the rpm of the pull motor. The rpm

 

cedure when the procedure select digital input

 

should be between 115 and 125 rpm. If nec-

 

changes state.

Machine operation is similar to

 

essary, decrease the calibration setting to

 

the "External Switch" selection except that addi-

 

slow the pull motor, or increase the calibra-

 

tional logic prevents procedure A from being re-

 

tion setting to speed

up the motor.

 

selected when the trigger is quickly and com-

 

The calibration range is -30 to +30, with 0 as

 

pletely released at step 2 of the 4-step weld

 

the default value.

 

 

sequence. This selection is intended to be used

 

• Press the right hand button to save the new

 

when a MIG gun with an integral procedure select

 

setting.

 

 

switch built into the trigger (e.g.DS400) is used

 

 

 

 

with 4-step welding.

 

 

 

 

POWER FEED® 25M

Page 44
Image 44
Lincoln Electric SVM185-A service manual Quick