Lincoln Electric IM915 manual POWER-UP Sequence, Changing Weld Modes, Changing ARC Wave Control

b-8 OPERATION b-8

The 16-character alphanumeric display (Item 5) indi- cates the process type and other information, the exact content of which depends on the selected weld mode. This additional information may include specific electrode type (e.g. 4043) and/or a description of the recommended gas (e.g. HeArCO2).

When the MSP4 is being used to change the value of an attribute, the 7-segment displays show the select- ed attribute’s value. The upper 8-character alphanu- meric display is typically not used while changing an attribute’s value. The lower 8-character alphanumeric display is used to indicate the units of the selected attribute (e.g. seconds, in/min, etc.). The 16-character alphanumeric display is used to display the name of the selected attribute.

The content of the displays while the user interface is being used for advance machine configuration (e.g. limit setting, pass code entering, machine setup, etc.) is described in later sections.

POWER-UP SEQUENCE

When power is first applied to the machine, a lamp test is performed. All discrete LED’s are turned on, all 7-segment displays will show a pattern of "8." and all alphanumeric displays will show a hatch pattern where every-other pixel is illuminated. The lamp test will last for two seconds, after which all displays are turned back off. The 16-character alphanumeric dis- play will show "Initializing…" while waiting for the Weld Sequencer to announce bus available. The MSP4 alphanumeric displays will then display the name of the weld table loaded in the power source while the user interface prepares the machine for operation. After all initialization is complete, the MSP4 will dis- play the weld mode information for the mode number that was selected when the machine was last pow- ered down.

CHANGING WELD MODES

To select a weld mode, press the left MSP4 pushbut- ton until the WELD MODE LED is illuminated. Turn the MSP4 encoder until the desired weld mode num- ber is displayed. As the MSP4 encoder knob is rotat- ed, only the weld mode number is displayed. After 1 second of encoder idle time, the user interface will change to the selected weld mode and the new mode’s electrode type, electrode size and process information will appear.

CHANGING ARC WAVE CONTROL

If the selected weld mode uses any of the four available wave controls, users can press the left MSP4 pushbutton until the ARC CONTROL LED is illuminated. The value, name and units (if applicable) of the available wave con- trols will appear. Note that the name of the control is derived from the weld table and may not necessarily appear as "Wave Control". Repeated pressing of the left MSP4 pushbutton will cycle through all active wave con- trols and then the weld mode. Turning the MSP4 encoder will change the value of the displayed wave control.

CHANGING WELD SEQUENCE bEHAVIOR

Weld sequencing attributes are grouped into two cate- gories, START OPTIONS and END OPTIONS. START OPTIONS may include Preflow Time, Run-in Wire Feed Speed, and Start Time. END OPTIONS may include Spot Timer, Crater Time, Burnback Time and Postflow Time. The attributes that appear in the START and END OPTIONS are weld mode dependent. For example, if a TIG weld mode is selected, Run-in WFS will not appear since it is not relevant to the selected process. Repeated pressing of the right MSP4 pushbutton will cycle through all relevant START and END OPTIONS. Turning the MSP4 encoder will change the value of the selected option.

When the Start Time attribute is set to a value other than OFF, the START OPTIONS LED will blink synchronous with the WFS and VOLTS/TRIM LED’s on the dual-dis- play panel. This blinking is used to indicate that start wire feed speed and voltage/trim can now be set to values dif- ferent from those used while welding. Similarly, if the Crater Time attribute is set to a value other than OFF, the END OPTIONS LED will blink synchronously with the dual-display LED’s, indicating that crater wire feed speed and voltage/trim now can be set to values different from those used while welding.

INFRARED (IR) CONTROL

The MSP4 interface includes an infrared transceiver. This allows wireless machine configuration using a Palm OS based hand held computer. A proprietary Palm OS application, Weld Manager, was developed for this pur- pose. (Contact Lincoln Electric for more information on this feature.)

LOCKOUT/SECURITY

The MSP4 can be optionally configured to prevent the welder from changing selected user interface controls. By default, all user interface controls can be changed. Weld Manager software (for Palm OS or PC) must be used to lock or unlock user interface controls and to set a pass code.

POWER FEED™ 10M SINGLE WIRE FEEDER