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1070 080 067-101 (2001.03) GB
PSI 6XXX.350 L1
Program 255 is used for <Current scaling>. This program cannot be used for normal
operation in production because Start-Inhibit is permanently ON. The program defaults
allow automatic <Current scaling> in most cases. However, they must be reviewed by
the operator prior to performing <Current scaling>. The fade-out time is 40 ms and trail
current measurement is disabled.
It is an essential prerequisite for creating a weld program for <Current scaling> on the
basis of the weld programs entered previously and assigned to an electrode that all those
weld programs have been entered correctly. Any weld programs currently not in use and
containing incorrect data will corrupt <Current scaling>.
NOTE
<Current scaling> alters the toroid sensitivity. Afterwards the toroid sensitivity must not
be altered by another input.
CAUTION!
Make sure that the electrode gun is properly closed. Otherwise, there is danger of
welding splashes!
Automatic <Current scaling> sequence without base metal:
Prerequisites:
-
The external weld current meter must be connected to the V24 interface.
-
The secondary current meter must be connected.
Sequence:
-
The electrode to be selected must be entered in the I/O field
-
The respective welding gun must be closed.
-
The current scaling input signal must be set.
-
The V24 log is switched over to the welding current meter log.
Now, the timer is in current scaling mode. No start commands or program selections en-
tered in the I/O field are accepted.
The program in the timer assigned to current scaling is program 255 where significant
parameters, e.g. run times, Weld/No weld internal ON, Start-Inhibit OFF, have been pre-
set. With this setting, the operator can now carry out a current scaling operation. How-
ever, to ensure scaling accuracy, reviewing such values values/parameter settings as
Weld Time, Measuring Time Window (fade-out time) and Differential Current Measure-
ment (trail current) and scaling them to the external weld current meter is crucial.
-
The electrode number selected is now automatically assigned to program
255.
-
Next, program 255 is started automatically by the software, without any ac-
tion required on the part of the operator, and the welding operations neces-
sary to carry out current scaling are executed.
Electrical connection
7-25
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