Lincoln Electric SVM185-A service manual Quick

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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