Electronic circuit supply:
24 Vac +10% / -20%
50/60 Hz.
Consumption:
7 VA at rest
21 VA when welding
Operative temperature:
5 ÷ 40 °C
according to the type of parameter. The minimum and maximum
limits of each parameter are described in the following table.
* When the pulse function is used, that is when the IMPULSE
NUMBER is other than 0, the welding time should not exceed 25
periods. If this condition is not observed, an error is signaled.
In this way all the parameters are set to the desired value. Please
notice that it is not necessary to press any push-button to confirm
the set value, as this is automatically stored up after the
adjustment. When programming step is over, it is possible to use
the welder without previously confirming the set or the stored data.
PARAMETER RANGE
SQUEEZE 1-99
cycles
WELD TIME
1-99 cycles *
CURRENT 1-99%
HOLD 1-99
cycles
OFF TIME
1-99 cycles
COMPUTER OFF/COMPUTER ON
00-01
SINGLE/REPEAT 00-01
WELD TIME 2
0-99 cycles *
CURRENT 2
0-99%
SLOPE 0-29
cycles
COLD 1-50
cycles
IMPULSE NUMBER
0-9
WELDING CONTROL UNIT TE 90
MAIN FEATURES
TECHNICAL DATA
Synchronous thyristor drive.
Phase shift control for welding current adjustment.
Simplified programming by means of four push-buttons.
Twin pre-setting for time and current, recallable by two
independent
controls.
Slope and pulse functions.
Single and repeat operating mode.
Secondary current compensation function for welding of
oxidized sheets and rods.
Auto-retain disabling for manually operated welders.
First phase shift delay adjustment. It enables the machine
line current best balance.
Control of solenoid valve 24 Vac 7,2 W Max with
protected output against short circuits.
PROGRAMMING THE WELDING CONTROL UNIT
Straight after the control unit is switched on, the display shows the
program version; after a few seconds the TE-90 equipment is set
in a waiting condition enabling the operator either to carry out the
programming or any welding process. The control unit is
programmed through the regulation of all parameters describing
the welding cycle; select the parameters and set the desired
values one by one. (See the relevant paragraph to better
understand the meaning of each parameter.)
TE-90 is a microprocessor welding control unit for single-phase resistance welders. The welding control unit is used to control the welder
parts and, in particular, the thyristors adjusting the welding current. The working cycle carried out by the TE-90 is described through the
programming parameters. The TE-90 can be used for both manual and pneumatic-operated welders.
The parameters are marked with international symbols which are
listed on the left side of the control unit. Each parameter is
combined with a pilot light. Select the parameters by means of
push-buttons
and
, the pilot light corresponding to the
selected parameter lights on and its value is shown on the display.
Use the WELD/NO WELD function to carry out any test cycle
without welding current. By means of
the here shown proper key, it is possible
to enable or disable the welding current.
When the light is on, the control unit is
set to WELD and it carries out standard
welding cycles. When the light is off, the
complete test cycles without welding current, even though all the
time-relevant parameters are preserved.
During the welding cycle the control unit shall display both the
current function and the relevant value.
Change the welding parameters value by means of push-buttons
and
, thus increasing or decreasing the value shown on
the display. The parameters can be set to different values,
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Summary of Contents for te-90
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