TECNA
S.p.A.
ITEM
TE700 Instruction
Manual
2.2
- CONSTANT CURRENT OPERATING MODE (IK)
When the weld control unit works in constant current mode, the current value which to carry
out the welding with may be set directly. During the welding procedure, the control unit
measures the real effective value (RMS) of the welding current every mS and maintains the
set current according to a mathematical correction algorithm. The max welding current value
that may be set is restricted automatically to the max current than can be supplied by the
welding transformer set in the
FEATURES INVERTER
menu
.
In addition to simplifying the programming operations, this WORKING MODE also permits to
keep the desired welding current even if some factors change such as: mains voltage,
welding circuit dimensions and impedance, conditions of the welding tools or surface
condition of the materials being processed.
The above image shows the welding current maintained by the constant adjustment
mathematical algorithm. Notice that the current slicing (RO) of the inverter changes during the
welding operation to keep the welding current constant.
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