TECNA
S.p.A.
ITEM
TE700 Instruction
Manual
TH TR. DIODE
This parameter allows the setting of the type of rectifiers installed on the secondary circuit of
the welding transformer. This function may be activated only if the operating frequency of the
inverter equals 1000 Hz. If operating frequencies are greater, the parameter cannot be
modified and the following message is displayed:
FAIL INIT THERMAL
LIM
CHECK PARAM. CONFIG.
ROGOWSKY TEST
It enables the check for the integrity both of the Rogowsky coil and the cable that connects it
to the inverter unit. If the function is activated, the inverter periodically checks that the circuit
of the current sensor is neither open nor short circuited. If a fault occurs, welding is inhibited
and the condition is signalled on the TE700 display. The activation of the Rogowsky test
function leads to a decrease in the max number of spots that the inverter may carry out in one
minute.
N° WELDING TRAFO
This parameter sets the number of welding transformers used with the inverter or alternatively
the number of the different welding tools used. If the operator intends using different tools for
the welding operations but only one welding transformer, set the required number of tools and
set the same turns and max current value, in the following parameters, for all the welding
transformers. If the operator intends using different welding transformers, each transformer
should be characterized by its turns ratio and by the max secondary current that can be
supplied. If the operator uses different welding transformers the Rogowsky integrity test must
not be enabled. If the operator uses more than one transformer or welding tool, the thermal
limit switches cannot be activated at the primary thermal current and at the diodes thermal
switch.
If the operator wishes to use different tools for alternating welds on a single welding
transformer, he/she must set the parameter equal to the number of welding tools used and in
any case the max number is four. Moreover, the operator must set the turns ratio of the
welding transformers to an identical value for all the transformers and equivalent to the turns
ratio of the transformer installed on the spot welder. Even the max supplied current values
from each transformer must all be set to the same value of the max current that is supplied by
the transformer installed on the spot welder.
TURNS TR.1
It sets the number of turns of welding transformer 1.
IMAX TR.1
It sets the max current that may be supplied by welding transformer 1.
TURNS TR.2
It sets the number of turns of welding transformer 2.
IMAX TR.2
It sets the max current that may be supplied by welding transformer 2.
73/128
