Welding Transformer Transmission Ratio - Bosch Rexroth PST 6 Serie Betriebsanleitung

1070087088 / 08 | PST 6xxEx
5.3.14

Welding transformer transmission ratio

In order to ensure the proper functioning of the power unit , the technical
data of the welding transformer used must be known in the timer.
• "Transformer transmission ratio":
Transmission ratio primary/secondary.
Transmission ratio = nominal voltage / output voltage
" For transformers with 2 secondary winding, please note whether the
windings are connected in series or in parallel!
Incorrect setting of the transformer transmission ratio
Incorrect current regulation and thus possibility of detrimental
effects on the welding process and the welding system!
" For transformers with tap changers, you must set the new, correct
transformer ratio whenever the tap changer has been modified, or
use a separate electrode/program number for each transformer
tap!
The "Transformer transmission ratio" parameter is needed for the
conversion between primary and secondary current in connection
with the primary current regulation.
Incorrect settings result in a defective current regulation and thus
in detrimental effects on the welding process and the welding sys­
tem.
Parameter setting in BOS:
In "Programming", flag "Electrode", parameter group "Transformer".
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