I/O ARC WELD SCREENS


I/O ARC WELD SCREENS

1.  I/O ARC WELD IN SCREEN

The I/O Weld monitor screen displays the items in Table 1, " I/O Weld Screen Items " .

Table 1.  I/O Weld Screen Items

ITEM DESCRIPTION

WELD SIGNAL

This item displays the different kinds of weld signals.

TYPE

This item displays the port type.

#

This item displays the port number.

SIM

This item displays whether the I/O weld signal is simulated or unsimulated.

STATUS

This item displays the kind of status of the I/O weld signal.

Table 2, " Arc Welding Input Signals " lists and describes each arc welding input signal.

Table 2.  Arc Welding Input Signals

input signal description

Voltage

Not available for Lincoln STT welding equipment

This item is an analog signal feedback to the controller that causes the display of the actual voltage the weld interface and power supply are using to weld.

Current

Not available for Lincoln STT welding equipment

This item is an analog signal feedback to the controller that causes the display of the actual current the weld interface and power supply are using to weld.

Wire feed speed

This item is an analog signal to the controller that causes the display of the actual wire feed speed the weld interface and power supply are using to weld.

Arc detect

This item is an input from the weld equipment to the controller. It indicates that the arc has been detected and welding is in process. This signal is monitored at an Arc Start.

The Arc Detect signal must be ON before the weld will continue. . If it is not ON at the start of the weld, the error message "ARC-013 Arc start failed" could appear.

The Arc Detect input signal is also monitored during welding if the arc loss function is set to enabled on the SETUP Weld System screen. If the Arc Detect signal turns OFF, the arc has been lost. This is reported as an error, the robot is stopped, and the program is paused. The error message is "ARC-018 Lost arc detect during welding."

Gas fault

This item is a fault input from the weld equipment to the controller. It indicates a lack of shielding gas.

The Gas Fault signal is usually connected to a pressure or flow switch. This signal is monitored if the gas shortage function is set to enabled on the SETUP Weld System screen. The error message, "ARC-005 Gas fault" could appear.

Wire fault

This item is a fault input from the weld equipment to the controller. It indicates either a problem in feeding the wire or the lack of wire on the spool. You must set up a switch to monitor the wire.

The Wire Fault signal is monitored during welding if the wire shortage function is set to enabled on the SETUP Weld System screen. If a wire fault occurs, it must be corrected before program execution can continue. The error message, "ARC-006 Wire fault" could appear.

Water fault

This item is a fault input from the weld equipment or torch cooler equipment to the controller. It indicates a problem with the water cooler or hoses. It is typically connected to a customer-supplied flow switch. This signal is monitored during welding if coolant shortage is set to enabled on the setup weld screen. The error message, "ARC-007 Water fault" could appear. Refer to the Error Code Manual for more information.

Power fault

This item is a fault input from the weld equipment to the controller. It indicates a power supply failure or loss of power. This is monitored during welding if the power supply failure function is set to enabled on the setup weld screen. The error message, "ARC-008 Power supply fault" could appear. Refer to the Error Code Manual for more information.

Wire Stick

This item is an input to the controller that indicates that the weld wire is fused to the work piece after the arc is extinguished.

Arc enable

This item is an input to the controller used to enable or disable welding. It is active only during remote operations (REMOTE is ON). This signal is typically connected to a remote keyswitch or CMND ENBL on a remote operator panel. By default, this input is not assigned. It can be assigned to a digital input using the I/O Weld In screen.

Remote inch fwd

This item is an input to the controller used to inch the wire forward.

Remote inch bwd

This item is an input to the controller used to inch the wire backward.


2.  I/O WELD OUT SCREEN

You can use the I/O Weld Out screen to

  • View the status of the output signals

  • Simulate output signals

  • Force output signals. You can force an output signal that is either simulated or not simulated. If the output signal is simulated, forcing the output has no affect on weld equipment. If the output signal is not simulated, the weld equipment turns on and off when forced.

  • Add a description or name to an unused input signal

  • Change the pre-assigned port number or port type

Arc welding output signals are pre-assigned when you select the welding equipment during installation. . If you are using a Lincoln Electric PowerWave x55/R series power supply connected via ArcLink, you can only re-assign the Gas Start output.

Note

The analog (AO[] and digital (DO[]) outputs displayed on the weld output screen are also displayed on the analog and digital I/O screens.

Note

During testing, you can use the TEST CYCLE screen to enable or disable arc welding signals. If you enable these signals, and then later disable them, you must unsimulate the signals using the I/O Weld Out screen or the UNSIM ALL I/O item on the FCTN menu.

The output signals will vary depending on the kind of weld equipment you are using. Table 3, " Arc Welding Output Signals " lists and describes each arc welding output signal.

Table 3.  Arc Welding Output Signals

Analog Output Signal Description

Voltage (only present if you have selected General MIG (Volts & Wire Feed Speed) welding equipment or you are using a Lincoln Electric PowerWave x55/R power source with a CV (Constant Voltage) process mode.)

This item is an analog output from the controller to the weld equipment that controls the welding voltage. It is scaled to the range of the power supply.

Current (Only present if you have selected General MIG (Amps & Volts) welding equipment or TIG equipment.)

This item is an analog output from the controller to the weld equipment that controls the welding current. It is scaled to the range of the power supply.

Wire Feed (This item will appear with General MIG equipment (Volts & Wire Feed Speed) or CV process modes. In some Lincoln Electric process modes this is known as “Workpoint”.)

This item is an analog output from the controller to the weld equipment that controls the speed of the wire feeder. It is scaled to the range of the power supply.

Trim (Present for Pulsed GMAW welding power supplies)

This item is an analog output from the controller to the weld equipment that controls the welding trim. (Trim is generally a reference parameter for arc length.) It is scaled to the range of the power supply.

Peak Current

This item is an analog output from the controller to the weld equipment that controls the welding peak current. It is scaled to the range of the power supply.

Back Current

This item is an analog output from the controller to the weld equipment that controls the welding background current. It is scaled to the range of the power supply.

Tailout (Only present for Lincoln Electric STT II process)

This item is a reference parameter controlling the time to decay from peak pulse to background pulse current.

Hot Start (Only present for Lincoln Electric STT II process)

This item is a reference parameter that controls the STT process mode re-strike current.

Digital Output Signal Description

Weld start

This item is an output from the controller to the weld equipment to start welding.

Gas start

This item is an output from the controller to the weld equipment to cause a gas valve to open and gas flow to begin.

Inch forward

This item is an output from the controller to the weld equipment to advance the wire when you press the WIRE+ key on the teach pendant.

Inch backward

This item is an output from the controller to the weld equipment to retract the wire when you press the WIRE- key on the teach pendant.

Wire stick alarm

This item is an output from the controller to the weld equipment to indicate a wire stick is detected.

Feed Forward

This item is an output from the controller to the weld equipment to advance the wire during welding .

Feed Backward

This item is an output from the controller to the weld equipment to retract the wire during welding .

Program Select 1

Program Select 2

Program Select 3

These items define three outputs that determine which weld controller program is selected.


3.  I/O WELD CONFIG SCREEN

You can use the I/O Weld Config screen to configure weld input and output signals.

Table 4.  I/O Weld Config Screen Items

ITEM DESCRIPTION
Selected Weld Input or Output Signal This item is an analog or digital input or output signal from the controller to the weld equipment.