Telwin SUPERIOR TIG 422 AC DC HF LIFT - Инструкция по эксплуатации - Страница 6

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-  Manual remote control with 2 potentiometers.

-  Pedal remote control.

-  MMA welding kit.

-  TIG welding kit.

-  Self-darkening mask: with fixed or adjustable filter.

-  Gas connector and pipe for hook-up with Argon bottle.

-  Pressure reducing valve with gauge.

-  Torch for TIG welding.

3. TECHNICAL DATA

3.1 DATA PLATE (FIG. A)

The most important data regarding use and performance of the welding machine are 

summarised on the rating plate and have the following meaning:

1-

   Protection rating of the covering.

2-  

Symbol for power supply line:

     1~: single phase alternating voltage;

     3~: three phase alternating voltage.

3- 

Symbol 

S

:  indicates  that  welding  operations  may  be  carried  out  in  environments 

with heightened risk of electric shock (e.g. very close to large metallic volumes).

4-  

Symbol for welding procedure provided.

5-  

Symbol for internal structure of the welding machine.

6- 

EUROPEAN  standard  of  reference,  for  safety  and  construction  of  arc  welding 

machines.

7- 

Manufacturer’s serial number for welding machine identification (indispensable for 

technical assistance, requesting spare parts, discovering product origin).

8-  

Performance of the welding circuit:

  - U

0

  :

 maximum no-load voltage (open welding circuit).

  - I

2

/U

2

:

 current and corresponding normalised voltage that the welding machine can 

supply during welding.

  -  X  : 

Duty  cycle:  indicates  the  time  for  which  the  welding  machine  can  supply 

the corresponding current (same column). It is expressed as %, based on a 10 

minutes cycle (e.g. 60% = 6 minutes working, 4 minutes pause, and so on).

    If the usage factors (on the plate, referring to a 40°C environment) are exceeded, 

the thermal safeguard will trigger (the welding machine will remain in standby until 

its temperature returns within the allowed limits).

  -  A/V-A/V:

  shows  the  range  of  adjustment  for  the  welding  current  (minimum  

maximum) at the corresponding arc voltage.

9-  

Technical specifications for power supply line:

  - U

1

: 

Alternating voltage and power supply frequency of welding machine (allowed 

limit ±10%).

  -  I

1 max

:

 Maximum current absorbed by the line.

-  I

1eff

:

 Effective current supplied.

10- 

:

Size of delayed action fuses to be used to protect the power line.

11- 

Symbols  referring  to  safety  regulations,  whose  meaning  is  given  in  chapter  1 

“General safety considerations for arc welding”.

Note: The data plate shown above is an example to give the meaning of the symbols 

and  numbers;  the  exact  values  of  technical  data  for  the  welding  machine  in  your 

possession must be checked directly on the data plate of the welding machine itself.

3.2 OTHER TECHNICAL DATA

- WELDING MACHINE:  see table 1 (TAB.1).

- TORCH:    

see table 2 (TAB.2).

The welding machine weight is shown in table 1 (TAB. 1).
4. DESCRIPTION OF THE WELDING MACHINE  

4.1 BLOCK DIAGRAM

The welding machine consists basically of power and control modules made on PCB’s 

and optimised to achieve perfect reliability and reduced maintenance.

This  welding  machine  is  controlled  by  a  microprocessor  that  allows  a  large  number 

of parameter settings so as to achieve perfect welding in any condition and with any 

material.  However,  to  make  the  best  use  of  its  properties  it  is  necessary  to  be  fully 

aware of its possibilities.

Description (FIG. B)

1-  Single phase power supply input, rectifier unit and levelling capacitors.

2-  Transistor (IGBT) switching bridge and drivers; 

commutes the rectified power 

supply  voltage  to  high  frequency  alternating  voltage  and  adjusts  the  power 

according to the required welding current/voltage.

3-  High  frequency  transformer;

  the  voltage  converted  by  block  2  powers  the 

primary  winding;  its  function  is  to  adjust  the  voltage  and  current  to  the  values 

needed  for  the  arc  welding  procedure  and  at  the  same  time  to  form  galvanic 

separation of the welding circuit from the power supply line.

4-  Secondary rectifier bridge with levelling inductance; 

commutes the alternating 

voltage / current supplied by the secondary winding into very low ripple direct

current / voltage.

5-  Transistor  (IGBT)  switching  bridge  and  drivers; 

transforms  the  secondary 

output current from DC to AC for TIG AC welding (if present).

6-  Control  and  adjustment  electronics; 

controls  the  welding  current  value 

instantaneously and compares it with the operator’s setting; modulates the control 

impulses from the IGBT drivers that make the adjustment.

7-  Welding machine operation control logic;

 sets the welding cycles, controls the 

actuators, supervises the safety systems.

8-  Settings panel 

and display of parameters and operating modes.

9-

HF strike generator 

(if present)

.

10-  Protective gas solenoid valve EV.

11-  Welding machine cooling fan.

12-  Remote control.

4.2 CONTROL, ADJUSTMENT AND CONNECTION DEVICES

4.2.1 BACK PANEL (FIG. C)

1- 

Power supply cable (2P + P.E) (1~); (3P + P.E) (3~).

2- 

Main switch  O/OFF  -  I/ON.

3- 

Gas pipe connector (bottle pressure reducing valve  welding machine).

4- 

Remote control connector:

Using the special 14-pin connector on the back, it is possible to attach 3 different 

types of remote control to the welding machine. Each device will be recognised 

automatically and can be used to adjust the following parameters: 

- Remote control with one potentiometer: 

  turning the potentiometer knob will change the main current from the minimum to 

the maximum. The main current is adjusted only and exclusively by the remote 

control.

- Pedal remote control:

  The current value is determined by the position of the pedal. In addition, in TIG 

2-STROKE  mode  pressing  the  pedal  gives  the  start  command  to  the  machine 

instead of the torch button.

- Remote control with two potentiometers:

  the  first  potentiometer  adjusts  the  main  current.  The  second  potentiometer 

adjusts  another  parameter,  depending  on  the  active  welding  mode.  When  this 

potentiometer is turned the display will show the changing value of the parameter 

(which can no longer be controlled with the knob on the panel). The meaning of 

the second potentiometer is: ARC FORCE if in MMA mode and END SLOPE if 

in TIG mode.

4.2.2 Front panel FIG. D1

1- 

Positive (+) quick latch to connect the welding cable.

2- 

Negative (-) quick latch to connect the welding cable.

3- 

Connector for connecting the torch pushbutton cable.

4- 

Fitting for connecting the gas pipe of the TIG torch.

5- 

Controls panel.

6- 

Welding modes selection pushbuttons: 

6a 

REMOTE COMMAND

  Allows  the  transfer  of  the  control  of  the  welding  parameters  to  the  remote 

control.

6b

MMA-TIG LIFT

  Operating  mode:  coated  electrode  welding  (MMA),  and  TIG  welding  with 

contact arc lift strike (TIG LIFT).

7-  Pushbutton for the selection of parameters to be set.

Button 

 selects the parameter to be adjusted through Encoder knob 

(8)

;

the value and unit of measure are visualised respectively on display 

(10)

 and led 

(9)

.

N.B.:

  Setting  of  parameters  is  free.  However,  there  are  value  combinations  that 

have no practical meaning for the welding; in this case the welding machine could 

operate incorrectly.

N.B.:

RE-SETTING OF ALL FACTORY PARAMETERS (RESET)

By  pressing  pushbutton 

(7) 

at  switch-on,  all  welding  parameters  are  returned  to 

default value.

7a 

 HOT START

  In  the  MMA  mode,  this  represents  the  “HOT  START”  initial  over-current 

(adjustment  range  0÷100)  with  indication  on  display  of  the  percentage 

increment of the selected welding current. This adjustment improves start-up.

7b 

 MAIN CURRENT (I

2

)

  In TIG mode, MMA represents the welding current, measured in Amperes.

7c 

 ARC-FORCE

  In  MMA  mode,  it  represents  the  dynamic  “ARC-FORCE”  over-current 

(adjustment  range  0÷100%)  with  indication  on  display  of  the  percentage 

increment  in  relation  to  the  pre-selected  welding  current’s  value.  This 

adjustment improves the weld fluidity, avoids the electrode sticking to the piece 

being welded and allows the use of different types of electrodes.

7d 

 END SLOPE (t

e

)

  In  TIG  mode,  it  represents  the  time  for  the  end  slope  (adjustment  range 

0.1÷10sec.); it avoids the weld seam’s end crater (from I

2

 to 0).

7e 

 POSTGAS

  In TIG mode, it represents the time for postgas in seconds (adjustment range 

0.1÷25sec.); it protects the weld pool from oxidation.

8- 

Encoder  knob  for  setting  the  welding  parameters,  selectable  by  means  of 

pushbutton 

(7)

.

9-

  Red led, indication of the unit of measure.

10-

  Alphanumeric display.

11-

ALARM-signalling LED (the machine is blocked).

Reset is automatic upon cessation of the cause that triggered the alarm.

Alarm messages appearing on display 

(10)

:

- ”AL1”  :

  primary circuit thermal protection tripping.

- ”AL2”  : 

secondary circuit thermal protection tripping.

- ”AL3”  : 

power supply

line protection against over-voltage tripping.

- ”AL4”  : 

power supply

line protection against under-voltage tripping.

- ”AL5”  : 

primary over-temperature protection tripping.

-

”AL6”  :

  protection tripping for power supply

line phase missing.

-

”AL7”  :

  excessive deposit of dust within the welding machine, resetting by:

  - inner cleaning of machine;

  - control panel display button.

- 

”AL8”  :

  Auxiliary voltage out of range.

Upon  switching  off  of  the  welding  machine,  the 

”OFF”

  signalling  could  continue 

for several seconds.