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CS-I User and Maintenance, R.2.8 ENG
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7.6.
Constant Energy, EK, introduction
In Constant energy mode instead of the current parameter 1 will appear as energy
parameter where it sets the energy required for the welding in progress; the time parameter
1 takes the meaning of the welding time maximum after which the power supply will stop,
reporting the anomaly.
In EK the inverter constantly adjusts the current to keep the product VxIxT constant within
the set time limits.
To work that way you will need to carry out a weld test in IK for the correct setting of this
mode
In this mode, the parameter "
VE input
" of voltage probe presence should be set to
"YES" and as with IK mode the calibration of machine is required
The installation of the Rogowski coil, and of the voltage sensor at the tips are required.
This mode is available only in spot cycles
.
7.6.1
Constant Energy, EK, operative notes
EK mode is a special case of control IK, in which the delivery time is defined by the inverter
itself (within limits) depending on the parameters of energy.
1. Defining an optimal operating condition by working in IK mode, preferably without the use of
pulses, repetition. In particular, it is necessary to fix the time of the initial slope up and initial
masking. Note that the value of energy supplied during welding depends on the current
supplied, the voltage measured by the presence of slope up and masking. Changing any of
these items may need to repeat the test working in IK.
2. By analyzing the measured values on good welds, define the energy values that
characterize a good weld quality
3. Bring the program EK mode:
a. Fix the amount of energy required on hot days, a weld 1 and weld 2, Pre and Post
heating continue to be performed in IK mode
b. Set the parameters "T. x Welding Min" and "Welding x T. Max" to the minimum and
maximum time desired for welding, on hot times, 1 and 2 (if used). In particular, as
the maximum time it is suggested to set a value greater than that found in welding IK,
then the algorithm to leave the task to stop welding
Welding now stop automatically when the power output required. The inverter shows the
time actually spent in welding, highlighting where it reached the level of energy required or,
conversely, when the weld is the minimum time period, although it had already been
achieved energy set.
For the next development, remember that:
•
The change in the current set point, with the same energy required, reduce delivery
time
•
The times of the initial slope-up and masking, change the window measure and then
read the amount of energy. Therefore requires a new verification in IK mode
.
•
Any repositioning of the probe voltage can significantly change the energy values,
and request a new set-up parameters.