Instruction manual
ITEM TE550
S.p.A.
28/92
By setting parameter QUALITY - T to IDENT or to TH+ID, the user activates the
electrode
indentation limits
.
In this case, two new parameters are displayed:
IDENT. MIN lower limit of the electrode indentation at the end of the weld
IDENT. MAX upper limit of the electrode indentation at the end of the weld
and permit setting the electrode indentation limit values at the end of the weld.
PROGRAM DATA
WORKING MODE IK
CONTROL MODE NO
>QUALITY - T IDENT
PROGRAM DATA
>PAUSE 00
IDENT. MIN 1.000mm
IDENT. MAX 1.500mm
When checking electrode indentation (QUALITY - T = IDENT or TH+ID), if the indentation is
less than or greater than the values set in the foregoing parameters, one of the following
messages appears:
ERR 0126
IDENTATION
UNDER LOW LIMIT
ERR 0127
IDENTATION
OVER HIGH LIMIT
SQUEEZE 1
The SQUEEZE 1 time determines the time needed by the electrode to move down.
If a simple pneumatic circuit is present, such time represents the interval of time that elapses
from the beginning of the head descent to the welding process beginning. The set value must
be long enough to allow the electrodes to achieve the proper clamping force, before the
welding process begins.
In a pneumatic circuit with low-pressure squeeze, the SQUEEZE 1 time is combined with the
SQUEEZE time where the SQUEEZE 1 time is the one determining the duration of the
interval of time that elapses from the beginning of the head descent to the application of the
welding pressure. The set value must be long enough to allow the electrodes to reach the
work piece to be welded. During the SQUEEZE 1 time, it is possible to end the cycle by
disabling the start cycle signal.
SQUEEZE
The SQUEEZE time is a wait time like that of the SQUEEZE 1. It is necessary for welding
machines with low-pressure squeeze functions. In this case, such time determines the interval
from the application of the welding force onto the electrodes (energizing of the EV2 valve) to
the beginning of the welding. It should be long enough to allow the electrodes to achieve the
proper clamping force before the welding begins. An inadequate adjustment of such time
produces sparks among the electrodes and the sheet when the welding begins, causing
quality inconsistencies. The squeeze time may be activated by means of the LOW FORCE
SQ parameter in the FEATURES MENU. It is advisable to activate this parameter only if the
welding machine is programmed for a low-pressure squeeze employing a suitable pneumatic
circuit. The SQUEEZE time is added to the SQUEEZE 1 time. If the start cycle signal is
deactivated during the squeeze time, the sequence is interrupted.
