Section 6
Weld control
31
Spot sequence timing
The weld programs contain the following timing parameters.
Parameter
Units
Range
Description
Presqueeze
ms
0 - 1999
The time for the electrodes to close onto the work piece.
Squeeze
ms
0 - 1999
The time between the initial application of the electrode force and
the first application of welding current
Pre-heat
1
ms
0 - 1999
The pre-heat welding current is applied
Cool1
1
ms
0 - 1999
The material is allowed to cool with electrode force applied
Upslope
ms
0 - 1999
Welding current is increased during this time
Main heat
ms
0 - 1999
The main welding current is applied
Cool2
2
ms
0 - 1999
The material is allowed to cool with electrode force applied
Downslope
ms
0 - 1999
Welding current is decreased during this time
Post-heat
3
ms
0 - 1999
The post-heat welding current is applied
Hold
ms
0 - 1999
Electrode force continues after the welding current has finished
Off
4
ms
0 - 1999
Electrode force is released until the next sequence begins
1
Pre-heat program option must be enabled to use this feature
2
Pulsations program option must be greater than 1 to use this feature
3
Post-heat program option must be enabled to use this extended feature
The diagram shows how the parameters control the sequence. The Presqueeze and Cool2 intervals are
not shown.
Start input
EOS output
WAV output
Force
Current
Int
e
rval
Squ
eez
e
Pre-h
e
at
Cool
1
Ups
lope
Mai
n
he
a
t
Do
wn
sl
o
pe
Post
heat
Hold
Off
Upslope
can be used on hard, irregular shaped, oxidized and aluminium materials
Downslope
can be used to reduce marking and embrittlement
