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GENERAL
Kempotig 50 is AC/DC-TIG ignition and control unit. It
includes connections for gas- as well as water-cooled
torches.
Kempotig 50 unit has versatile operation ways. Among
others stepless remote control of welding current with
up- and down slope, Minilog-function as well as time
control of shielding gas use enable even the most
demanding welds.
TECHNICAL DATA
Kempotig 50
Working voltage *)
Rated power
Load capacity
Dimension
Weight
Degree of protection
*) Note! Supply through safety isolating transformer.
The products meet conformity requirements for CE
marking.
CONTROL DEVICES
Main switch
–
in the O-position of the switch, the power source is
directly controlled by the local- or remote control
–
in the I-position of the switch the ignition and control
circuits of the Kempotig 50 are switched on.
Welding and pulse current: remote control devices from
C-series.
Basic current control
Up-slope control
Down-slope control
Spot welding time control
Potentiometer for post gas time 5 –30 s (Automatically
controlled gas valve.)
Torch switch:
–
long signal > 0,7 s
–
short signal < 0,7 s
Selecting switch of control method:
–
continuous welding
–
spot welding
–
Minilog control
OPERATION WAYS
Continuous welding
Immediately the torch switch is depressed the gas flow
begins and the ignition pulse is developed. When the weld-
ing arc is established the welding current increases to a
value set by the remote control at a uniform rate, depend-
ent upon the adjusted up-slope time.
If the arc does not ignite, the switch must be released and
depressed again.
When the switch is released the welding current decreas-
es to zero at a uniform rate dependent upon the adjusted
30 V 50/60 Hz
35 VA
ED 60 %
500 A
ED 100 %
387 A
length
400 mm
width
215 mm
height
400 mm
16 kg
IP 23
1 – 10
0 – 5 s
0 – 10 s
0 – 2 s
down-slope time after which the adjusted post gas flow
time begins.
Spot welding
The opeation is similar with the continuous welding but
the spot time from beginning of up-slope to beginning of
down-slope can be adjusted.
The adjusted time for post gas flow begins when the spot
time is at the end and the switch released.
Minilog control
The Minilog programme is controlled by signals from the
torch switch given by the operator. The signals are termed
a “short signal” and a “long signal”.
When the torch switch is depressed gas flow begins. Af-
ter the long signal time has elapsed the torch switch can
be released, ignition pulses are then developed and a
welding arc is established at a current level dependent
upon the basic current potentiometer setting.
Ashort signal is then required to slope up the adjusted
welding current, determined by the remote control.
The current is changed by means of further short signals
between welding current and basic current settings.
To end the welding operation a long signal must be given
after which the current decreases to zero from the weld-
ing or basic current level over the adjusted down slope
time. The adjusted post gas flow time then begins.
It is posible to check the sequence of operations of the
Minilog programme, with the LED lamps fitted to the facia
panel of the Kempotig 50 unit.
Long pulse
Welding current can be pulsed with the control device
C 100P.
The pulsing also operates during down-slope, however
not when finishing from the basic current.
MAINTENANCE
The amount of use and the working conditions should be
taken into consideration in the maintenance of the Kem-
potig 50 equipment. Careful use and preventive mainte-
nance will ensure troublefree operation without unforesee-
able service interruptions.
The unit can be placed independently or on the transport
trolley of the MULTISYSTEM.
In order to reduce the dust disturbances we recommend
the siting height about 70 cm from the floor.
The unit should be protected against hard rain.
The dust from inside the unit can be blown out with dry
compressed air.
The connectors should be tightened at regular intervals.
When cleaning with dry compressed air, always por-
tect your eyes with proper eye protection!
In case of porblems contact the KEMPPI works or your
KEMPPI-dealer.
9938 / 1927300 /
11
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