Stel TIG μP 253H AC/DC Manual De Instrucciones página 48

TIG µP 253H AC/DC
TECHNICAL DESCRIPTION
To view the set value at any time, briefly press the PG button.
6) Activating and regulating DC pulse – A first brief press of the F button (ref.11
page 9) selects DC pulse mode.
The ON PULSE led (ref.11A page 9) will start to blink. The right-hand display A
(ref.15 page 9) will start to blink, indicating the value that can be selected with the
encoder (ref.5 page 9); the pulse frequency can be regulated from 0.4Hz to
300Hz .
A second immediate press on the F button will make the left-hand display V (ref.16
page 9) blink, indicating the duty–cycle pulse value, which can be regulated with
the encoder (ref.5 page 9), from 30% to 60%.
In this mode the basic pulse current can be regulated. Pressing the FC button
(ref.9 page 9), the left-hand display V (ref.15 page 9) will start to blink, indicating
the value that can be selected with the encoder (ref.5 page 9) from 10% to 90% of
the final welding current A.
To view the set value at any time, briefly press the F button
To turn off DC pulse, hold down the F button for more than 2 seconds
7) Activating and regulating AC mode – A first brief press of the AC MODE button
(ref.14 page 9) selects AC mode.
The ON AC led (ref.14A page 9) will start to blink. The displays will start to blink.
7a) Regulating the AC conversion Frequency – Turning the regulating encoder F
(ref.13 page 9) varies the AC frequency value from 20Hz to 200Hz; the right-hand
display A (Fac) (ref.15 page 9) indicates the value selected.
7b) Regulating the AC conversion Balance – Turning the regulating encoder B
(ref.12 page 9) varies the balance value from 10% to 90% with reference to the
negative polarity; the left-hand display V (Bac) (ref.16 page 9) indicates the value
selected.
To view the set parameters at any time, briefly press the AC MODE button (ref.14
page 9) or slightly shift one of the encoders F or B
Notes: when AC mode is turned on, the DC pulse regulation (see point 6) is limited
from 0.4Hz to 2Hz.
To turn off AC mode, hold down the AC MODE button (ref.14 page 9) for more
than 2 seconds.
For further information on the characteristics of welding in AC mode, read para-
graph 6.3 page 32 EXPLANATORY NOTES ON WELDING IN AC
8) If you want to work with a remote control (CAD), refer to the chapter on PRE-
PARING THE REMOTE/PEDAL CONTROL on page 20.
48
ENGLISH
COD. 6910000030
STEL s.r.l. – Via del Progresso n° 59 – 36020
Loc. Castegnero (VICENZA) - ITALY
TEL. +39 444 639525 (central.) – +39 444 639682 (comm.)
FAX +39 444 639641 – E-mail:stelgroup.com
http: www.stelgroup.it
TIG µP 253H AC/DC
TECHNICAL DESCRIPTION
To view the set value at any time, briefly press the PG button.
6) Activating and regulating DC pulse – A first brief press of the F button (ref.11
page 9) selects DC pulse mode.
The ON PULSE led (ref.11A page 9) will start to blink. The right-hand display A
(ref.15 page 9) will start to blink, indicating the value that can be selected with the
encoder (ref.5 page 9); the pulse frequency can be regulated from 0.4Hz to
300Hz .
A second immediate press on the F button will make the left-hand display V (ref.16
page 9) blink, indicating the duty–cycle pulse value, which can be regulated with
the encoder (ref.5 page 9), from 30% to 60%.
In this mode the basic pulse current can be regulated. Pressing the FC button
(ref.9 page 9), the left-hand display V (ref.15 page 9) will start to blink, indicating
the value that can be selected with the encoder (ref.5 page 9) from 10% to 90% of
the final welding current A.
To view the set value at any time, briefly press the F button
To turn off DC pulse, hold down the F button for more than 2 seconds
7) Activating and regulating AC mode – A first brief press of the AC MODE button
(ref.14 page 9) selects AC mode.
The ON AC led (ref.14A page 9) will start to blink. The displays will start to blink.
7a) Regulating the AC conversion Frequency – Turning the regulating encoder F
(ref.13 page 9) varies the AC frequency value from 20Hz to 200Hz; the right-hand
display A (Fac) (ref.15 page 9) indicates the value selected.
7b) Regulating the AC conversion Balance – Turning the regulating encoder B
(ref.12 page 9) varies the balance value from 10% to 90% with reference to the
negative polarity; the left-hand display V (Bac) (ref.16 page 9) indicates the value
selected.
To view the set parameters at any time, briefly press the AC MODE button (ref.14
page 9) or slightly shift one of the encoders F or B
Notes: when AC mode is turned on, the DC pulse regulation (see point 6) is limited
from 0.4Hz to 2Hz.
To turn off AC mode, hold down the AC MODE button (ref.14 page 9) for more
than 2 seconds.
For further information on the characteristics of welding in AC mode, read para-
graph 6.3 page 32 EXPLANATORY NOTES ON WELDING IN AC
8) If you want to work with a remote control (CAD), refer to the chapter on PRE-
PARING THE REMOTE/PEDAL CONTROL on page 20.
48
ENGLISH
COD. 6910000030
STEL s.r.l. – Via del Progresso n° 59 – 36020
Loc. Castegnero (VICENZA) - ITALY
TEL. +39 444 639525 (central.) – +39 444 639682 (comm.)
FAX +39 444 639641 – E-mail:stelgroup.com
http: www.stelgroup.it