Section 12
Configuration
59
Seam pre-heat only
Pre-heat can be used in situations when a spot weld is required. The following example shows how to use the
pre-heat to produce a spot weld.
Parameter
Setting
Description
Sequence timing
Presqueeze
ms
The time for the electrodes to close onto the work piece.
Squeeze
ms
The time between the initial application of the electrode force
and the first application of welding current
Pre-heat
ms
The pre-heat welding current is applied
Main heat
0
The main welding current is not used
Hold
ms
Electrode force continues after the welding current has
finished
Current control
Pre-mode
P/W – CCu – CCC Operating mode of the Pre-heat interval
Pre-heat
%
The % heat used during the Pre-heat interval
Pre-current
kA
The current used during the Pre-heat interval
Pre-monitor
1
yes/no
The current can be tested between limits
Low limit
1
%
Current low limit
High limit
1
%
Current high limit
Options
Pre-heat
yes
Enable the Pre-heat parameters
Post-heat
no
Disable the Post-heat parameters
1
optional
Start input
1
EOS output
WAV output
Motor output
2
Force
Current
Int
e
rval
S
q
ueez
e
Pre-h
eat
Hold
1
The Pre-heat interval is interlocked.
2
The operation of the motor output is determined by the 2
nd
stage test (Section 12
Configuration
).