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B-12

 

NOTES

B-12

 

 

 

 

 

P.8

TIG Gas Control (Two Settings)

P.13

Adjust Arc Force

 

1.

"Valve (manual)", the internal solenoid will not

 

Use this menu to adjust Arc Force values for Start,

 

 

actuate while TIG welding, gas flow is manually

 

Weld and Crater. Press the right MSP4 button to

 

 

controlled by an external valve.

 

enter the menu and rotate the knob to choose either

 

2.

"Solenoid (auto)", the internal gas solenoid will

 

Start, Weld or Crater. Press the right MSP4 button

 

 

turn on and off automatically while TIG welding

 

and then rotate the knob to the desired value.

 

 

as follows:

 

Press the left MSP4 button to set the value and exit.

Preflow time will not be accessible from the MSP4.

Postflow time will be available in the MSP4 "End

 

Options" and have a range of OFF to 10.0 sec-

 

Continue to adjust Arc Force for other states, and

 

onds.

 

 

then press the left MSP4 button to exit the menu.

 

• The postflow time value is maintained when

 

 

 

switching between MIG and TIG modes.

P.80

Sense From Studs (two settings)

 

• When machine output on/off is controlled via the

 

1. "False", the voltage sense lead is automatically

 

right encoder, gas flow will not start until the tung-

 

selected based on the DIP switch configuration

 

sten touches, the work piece, gas flow will stop

 

and the selected weld mode. This is the default

 

after the postflow time when the arc is broken.

 

value that is used every time the machine is pow-

 

• When machine output on/off is controlled via an

 

ered up. Note that setting P.80 to "False" does

 

arc start switch or foot Amptrol, gas will begin flow-

 

not preclude voltage sensing from the studs if

 

ing when the output is turned on and stop flowing

 

studs sensing is specified by the selected weld

 

after the postflow period after the output is turned

 

mode (for example stick and TIG weld modes will

 

off.

 

 

still sense voltage at the studs).

P.9

Crater Delay

 

 

2. "True", voltage sensing is forced to "studs"

 

This parameter enables a timer delay for each feed

 

regardless of the DIP switch configuration and

 

head to bypass the Crater option when short tack

 

selected weld mode. Setting P.80 to "True"

 

welds are desired. If the trigger is released before

 

should only be done for troubleshooting purpos-

 

the timer expires, Crater will be bypassed and the

 

es. P.80 will automatically be set back to "False"

 

weld will end. If the trigger is released after the timer

 

the next time the equipment is powered up or can

 

expires, Crater will function as normal (if Crater

 

be manually changed back to "False" via the

 

function is turned on).

 

 

setup menu.

P.11

Set Timers

 

 

In order to control the welding arc, the power source

 

This menu is used to adjust timer values for

 

continually monitors arc current and arc voltage.

 

Upslope, Downslope and Restrike. Press the right

 

Arc current is measured internal to the power

 

button to enter the Set Timer menu. Rotate the

 

source. Arc voltage can be measured as follows:

 

knob to select the timer to adjust and then press the

 

• Voltage internal to the power source ("studs")

 

right button. Adjust the value of the timer by rotating

 

• Voltage at the wire feeder ("67" lead)

 

the knob. Press the left MSP4 button to set the

 

• Voltage at a user-wired sense lead ("21" lead)

 

value and exit. Continue to adjust other timers as

 

 

 

necessary, and then press the left button to exit the

 

Remote voltage sensing (anything other than

 

Set Timer menu.

 

 

"studs") is used to obtain a more accurate voltage

 

 

 

 

measurement since the sense lead is closer to the

P.12

Travel Options

 

 

arc. Remote voltage sensing can involve external

 

This menu is used to change the travel options for a

 

wiring and DIP switch configuration, there is a

 

travel carriage, including starting and ending func-

 

potential for incorrect voltage measurement which

 

tions. The right MSP4 button to enter the Travel

 

can lead to poor arc control or wire burn back.

 

Options menu and rotate the encoder to select

 

 

 

either starting or ending options.

Press the right

P.99

Show Test Modes

 

MSP4 button to select the option.

Press the left

 

Many weld tables include special modes for testing

 

MSP4 button to set the value and exit. Rotate the

 

and servicing the welding system. Set this parame-

 

encoder to select other options, or press the left

 

ter to YES to show all test modes.

 

MSP4 button to exit the menu.

 

 

 

 

 

 

 

When the power source is turned off, the Show Test

 

 

 

 

Modes parameter automatically reverts back to

 

 

 

 

"NO".

POWER FEED 10M SINGLE/DUAL

Page 34
Image 34
Lincoln Electric SVM172-A service manual Actuate while TIG welding, gas flow is manually