S.p.A. ITEM TE550 Instruction manual
2.2 - PERCENTAGE ADJUSTMENT OPERATING MODE
WORKING MODE parameter selected in FIX, the working frame is the following one:
PROG. 001 SPOT 12340
WELD CYCLE 01.0 ~
CURRENT RMS 43.26 kA
CONDUCTION DEG 142°
In the FIX percentage adjustment operating mode, it is possible to set the percentage value
one wants to carry the welding process out with. In this mode, the control unit measures the
true efficacious welding current RMS value and, at the end of the welding process, it displays
the current value.
The percentage adjustment operating mode does not foresee any secondary coil feedback
during the welding process; for this reason, it is suitable for being used especially when one
operates in difficult working conditions, beyond the welding tables, as for instance when using
a very short welding time where it would be critical to use one of the more complex working
modes foreseen in this control unit.
The correlation map between the set percentage and the controlled diodes (SCR) closing time
is set in TECNA and might not be perfectly linear; in order to improve the scale linearity, it has
been inserted a parameter in the FEATURES MENU allowing to delay the welding process
start time. For further information check the relevant paragraph.
TABLE PERCENTAGE OPERATING MODE PARAMETERS
PROGRAM DATA
>PROGRAM N. 001
WORKING MODE FIX
CONTROL MODE CUR
PARAMETER VALUE RANGE
PROGRAM N. 001 – 250
WORKING MODE FIX
CONTROL MODE * NO
QUALITY – T * OFF
SQUEEZE 1 00.5 - 99.5 cycles
SQUEEZE 00.5 - 99.5 cycles
PRESSURE 00.5 - 10.0 bar
FORGE DELAY 00 - 99 cycles
FORG.PRESS. 00.5 - 10.0 bar
PRE-WELD 00.0 - 99.5 cycles
PRE-POWER 05 - 99 %
COLD 1 00 - 50 cycles
SLOPE UP 00 - 25 cycles
WELD 00.5 - 99.5 cycles
POWER 05 - 99 %
IMPULSE N. 01 – 09
COLD 2 00 - 50 cycles
SLOPE DOWN 00 - 25 cycles
COLD 3 00 - 50 cycles
POST-WELD. 00.0 - 99.5 cycles
POST-POWER 05 - 99 %
HOLD TIME 00.5 - 99.5 cycles
OFF TIME 00.0 - 99.5 cycles
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