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Method MMA - security function V.R.D.
The security system V.R.D. provides a low voltage at the
output of the machine - 15 V. This safe value changes
immediately after contacting the electrode with the
welded material. When the welding process is finished
the output voltage will automatically change to 15 V
again. When the V.R.D. function is turned off the open
circuit voltage is 88 V.
Method MMA - switching ON function V.R.D.
Switch off the machine with the main switch. Press and
hold button MET (pos. 6, pic. 1) on the front panel and
switch on the machine with the main switch. Release
button MET just after switching on. LED „MMA V.R.D.
(pos. 7, pic. 1) is lit up on the panel and sign ON is dis
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played for about 1-2 s. Function V.R.D. is on (signalised
by luminous LED - pos. 7, pic. 1).
Method MMA - switching OFF function V.R.D.
Switch off the machine with the main switch. Press and
hold button MET (pos. 6, pic. 1) on the front panel and
switch on the machine with the main switch. Release
button MET just after switching on. Indicator light LED
„V.R.D.“ is switched off on the front panel and sign OFF
is displayed for about 1-2 s. Function V.R.D. is switched
off.
Options for parameters setting
for TIG method:
• Welding current 10-150 A (serie 160), 10-190 A (serie
200).
• The frequency of pulsation welding current 0-500 Hz.
Undercurrent value (basic current) is about 50 %
upper welding current. The proportion of upper and
lower flow (BALANCE) vin the pulsation period is
50 % on 50 %.
• Declaration time of welding current 0-5 s.
• End current 10-150 A (190 A).
TIG method - setting of the welding current
By rotary encoder (pos. 6, pic. 2) set the desired wel
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ding current.
Method TIG - setting of pulse frequency
of welding current
Press button SET (pos. 9, pic. 1) until LED „PULSE“ (pos.
5, pic. 1) is on as in the picture. Set up required value of
pulse frequency of welding current with a potentiome
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ter. Pulse is switched off with setting-up „0“.
Method TIG - setting of time of welding
current run-out
Press button SET (pos. 9, pict. 1) until LED „SLOPE“ (pos.
7, pict. 1) is on as in the picture. Set up required value
of time duration of welding current run-out with a po
-
tentiometer.
EN
