DISPLAY WELD DATA SCREENS


DISPLAY WELD DATA SCREENS

1.  DISPLAY WELD DATA SCREEN

You can view weld data from the Display Weld Data screen.

Table 1.  IWC Weld Data Elements

Display Abbreviations Definition Engineering Units Update Rate AC or MFDC

PRI. V

Average primary voltage

Volts

Every Weld

AC

DC Bus

Average DC bus voltage level

Volts

Every Weld

MFDC

PRI. I

Average primary current

Amps

Every Weld

BOTH

SEC. I

Average secondary current

The average secondary current might be a computed value (primary_current * transformer_turns_ration) if the welding power cabinet has no secondary current pickup coil installed. Therefore, for an accurate secondary current calculation it is important to have a properly programmed transformer turns ratio.

Amps

Every Weld

BOTH

AVG. PF

Average power factor

%

Every Weld

AC

ONTIME

Average inverter weld on-time

micro-seconds

Every Weld

MFDC

AIN1

First analog channel's proportional valve feedback channel for monitoring weld head command signal accuracy.

PSI

Once per incoming power line cycle

BOTH

AOUT1

First analog output channel's command signal to a proportional valve for controlling weld head pressure.

PSI

Once per incoming power line cycle

BOTH

SCHD

Sequence number

#

Every Weld

BOTH

%I

Average percent line current fired

% Amps

Every Weld

AC

CYCLES

Number of weld cycles

#

Every Weld

BOTH

CFACT

Computed value equaling 1% of available current during a weld.

Ratio

Every Weld

BOTH

AIN2

Second analog channel's proportional valve feedback channel for monitoring weld head command signal accuracy.

PSI

Once per incoming power line cycle

BOTH

AOUT2

Second analog output channel's command signal to a proportional valve for controlling weld head pressure.

PSI

Once per incoming power line cycle

BOTH

LINE V

Primary line voltage level read from the welding contactor panel.

Volts

Once per incoming power line cycle

BOTH

Z.C. SYNC

TRUE indicates the IWC has proper synchronization with the incoming power line's voltage zero-crossing.

FALSE indicates the IWC is unable to synchronize with the incoming power line's voltage zero crossing. The IWC will not allow welding to occur until synchronized.

Boolean

Once per incoming power line cycle

BOTH


Table 2.  Detailed Weld Data Screen Choices

To perform this operation

Press this function key

Description

WC_NUM

F3

This item allows you to change the IWC (if more than one IWC board is installed).

HELP

F5

This item allows you to display information on how to use the specific menu options.


2.  DISPLAY WELD DATA HISTORY SCREEN

The Display Weld Data History screen, which displays statistical information for up to the last 100 welds, allows you to filter the view based on every weld, part-specific welds only, or by part or weld ID combination.

Table 3.  Weld Data History Screen Choices

To perform this operation

Press this function key

Description

PARTID

F2

This item allows you to access the style table to assist in selecting a part ID

WC_NUM

F3

This item allows you to change the IWC (if more than one IWC board is installed).

SAVE

F4

This item allows you to save weld history information to the default device.

HELP

F5

This item allows you to display information on how to use the specific menu options.


Table 4.  Weld History Definitions

WELD HISTORY ABBREVIATIONS DEFINITIONS

Part ID

This item identifies a specific part (style). The part ID number is the same as the style number in the style table.

Weld ID

This item identifies a particular weld on a part. The weld ID corresponds to the position ID number of a spot statement in a style program.

V

This item identifies the voltage applied to the gun transformer (proportional to the voltage at the work piece).

I

This item identifies the current at the gun transformer (proportional to the current at the work piece).

PF

This item identifies a measure of the power delivered to the work piece. It is not used in MFDC welding.

CF

This item identifies the Cfactor. High values indicate a short. Low values indicate an open circuit. NOTE: First determine what is normal for your installation.

AVG

This item lists the statistical average which is the sum of all values divided by the number of values.

STD

This item lists the statistical standard deviation, square root of variance.

VAR

This item identifies the statistical variance, the average variability of the values about the mean, expressed as the average of the sum of squared deviations.