Hitachi EW4400 [8/44] Inverter functions and connections

Hitachi EW4400 [8/44] Inverter functions and connections
8
5.0 INVERTER FUNCTIONS AND
CONNECTIONS
1 Adjusting welding current potentiome-
ter
2 Stick / Tig Selector (only for the mo-
dels which have it)
3 Green Led indicating power ON
Led ON = Power ON
Led OFF = Power OFF
Overvoltage Protection Intervention (reset
!>##!@
!>3
4 Yellow Led
Led ON = indicating temperature limits are

.     ! . 
!!
Led ON = indicating alarm condition due to
"'
case of protection intervention due to a cur-
1
2
5
6
34
rent peak the unit will revert to working, if not

5 Dinse positive socket
6 Dinse negative socket
7 Input Cable
8 ON/OFF Switch
6.0 STICK WELDING
General information
The electric arc may be described as a
source of bright light and strong heat;
!"#$&&'*+9<9"*=*$&>$$?>>*!&!&'*
gas atmosphere which surrounds the
electrode and the workpiece determines
the radiation of electromagnetic waves
that can be perceived as light and/or
heat depending on their wave length. At
an unperceivable level, the arc also pro-
duces ultra-violet and infra-red light; io-
nizing rays have never been noted. The
heat produced by the arc is used in the
welding process to melt and join metal
parts. The necessary electric current is
supplied by special equipment common-
ly called welding machine.
- Connect the earth cable to the negative
pole of the Inverter and the earth clamp to the
!/
- Connect the welding cable to the positive
'
- Select the welding current using the poten-
"!-
rent should be chosen following the instruction
given by the electrodes manufacturer on the
electrode box, but the following indications
may be useful as general information:
< +!  ' "!
the front panel will be respectively the green
= lit and the yellow = off (for more details see
3+/!-
!
RETEMAIDEDORTCELETNERRUCGNIDLEW
mm5.1A04-A03
mm0.2A56-A05
mm5.2A001-A07
mm52.3A041-A001
mm0.4A061-A041
8
7

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5 0 INVERTER FUNCTIONS AND CONNECTIONS 3 4 rent peak the unit will revert to working if not so please contact your service centre 5 Dinse positive socket 6 Dinse negative socket 7 Input Cable 8 ON OFF Switch 6 0 STICK WELDING General information The electric arc may be described as a source of bright light and strong heat in fact the flow of electric current in the gas atmosphere which surrounds the electrode and the workpiece determines the radiation of electromagnetic waves that can be perceived as light and or heat depending on their wave length At an unperceivable level the arc also pro duces ultra violet and infra red light io nizing rays have never been noted The heat produced by the arc is used in the welding process to melt and join metal parts The necessary electric current is supplied by special equipment common ly called welding machine Connect the earth cable to the negative pole of the Inverter and the earth clamp to the workpiece Connect the welding cable to the positive pole of the Inverter Select the welding current using the poten tiometer on the front panel The welding cur rent should be chosen following the instruction given by the electrodes manufacturer on the electrode box but the following indications 1 Adjusting welding current potentiome may be useful as general information ter 2 Stick Tig Selector only for the mo dels which have it 3 Green Led indicating power ON Led ON Power ON Led OFF Power OFF Overvoltage Protection Intervention reset the unit by switching it OFF wait 20 seconds then switch the unit ON 4 Yellow Led 8 Led ON indicating temperature limits are exceeded Warning Let unit to cool down When ready the yellow led will automatically shut off Led ON indicating alarm condition due to over current Turn unit off and then on In the case of protection intervention due to a cur ELECTRODE DIAMETER WELDING CURRENT 1 5mm 30 A 40A 2 0mm 50 A 65 A 2 5mm 70 A 100 A 3 25mm 100 A 140 A 4 0mm 140 A 160 A Switch the Inverter on The two leds on the front panel will be respectively the green lit and the yellow off for more details see page before Select the stick welding throu gh the switch placed on the front panel

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