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. |
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. |