Adjustment Of Welding Parameters - navod 255 Bedienungsanweisung

•
if you use gas carbon dioxide, it is suitable to plug in gas heating (during
the flow less than 6 litres/ min. the heating is not necessary)
•
plug in the cable of heating into the socket (pic. 1A pos. 10, 1B pos. 7) on
the machine and into the connector at cylinder pressure regulator, pola‐
rity is not important
•
unplug the holding‐down mechanism of wire feed and press the button
of the torch (only for 280 Standard)
•
turn the adjustment screw on the bottom side of pressure valve until
flow indicator shows required flow, then release the button of the torch
(only for 280 Standard)
•
press GAS TEST button, turn adjustment screw on the bottom side of
pressure valve until flow indicator shows required flow, then release the
button (for Processor and Synergic machines)
•
if the machine was not used for a longer time, or after entire change of
welding torch, it is recommended to blow ways by fresh gas before you
start welding
Adjustment of welding parameters
FUNCTION FACTORY CONFIGURATION
Function Factory configuration allows setting original parameters of the ma‐
chines from the manufactory centre. It serves fast initial setting. It is carried
out when the machine is switched off ‐ we press and hold the button SET and
we shall start the machine using the main switch. Initial ‐ so called factory
configuretion is set automatically for all values ‐ speed of wire feed, pre‐blow,
after‐blow, soft start, burn out, spot, pulse.
PRINCIPLE OF MIG/MAG WELDING
Welding wire is lead from the roller into the flow drawing tie with the use of
the feed. Arc joins thawing wire electrode with welding material. Welding
wire functions as a carrier of the arc and as the source of additional material
at the same time. Protective gas flows from the spacer which protects arc and
the whole weld against the effects of surrounding atmosphere (pic. 3).
ADJUSTMENT OF WELDING PARAMETERS OF VOLTAGE AND SPEED WIRE
Adjustment of main welding parameters of welding voltage and speed of wire
shift is carried out with a potentiometer of wire speed and a voltage switch
(pict. 1A pos.2 and 3, pict. 1B pos. 1). You shall always allocate speed of wire
shift to adjusted voltage (switch position 1‐20). Adjusted parameters depend
on used protective gas, wire diameter, applied wire type, size and position of
a weld etc.
Reference setting of wire speed and switch positions can be found in pages
55 ‐ 60.
FOR INSTANCE: Machine 255, used protective gas MIX (82% Argon and 18%
CO ) and used wire diameter 0,8 mm can be found in a chart (program No 4).
2
Adjusted va‐lues will be then ‐ switch position A1 and adjusted speed of wire
shift will be 2 m/min.
MACHINES PROCESSOR AND SYNERGIC
Table 4 ‐ range of value settings
time approac
time of start
duration hing
of wire shift
of gas wire
speed
fore‐blow speed
(s) (m/min)
PROCESSOR
255, 280, 285,
0‐3 0,5‐20
305, 351, 354,
384, 405, 389
PROCESSOR
0‐3 ‐ 0,5‐20
309
SYNERGIC
255, 280, 285, 0‐3 ‐ 0,5‐20
305
SYNERGIC
351, 354, 384, 0‐3 ‐ 0,5‐20
405
Setting speed of wire shift
Press button SET until you switch on LED marked in the picture.
Use the potentiometer to set up required value of shift speed within range
0.5‐20 m/min.
Speed of spott response burning
wire shift time time out
(s) (m/min) (s) (s) (s)
0‐5 0,5‐20 0,5‐5 0,2‐2 0,00‐0,99
0,5‐20 0,5‐5 0,2‐2 0,00‐0,99
0,5‐20 0,5‐5 0,2‐2 0,00‐0,99
0,5‐20 0,5‐5 0,2‐2 0,00‐0,99
NOTE 1: Speed of wire shift can also be adjusted and changed during welding.
Either a potentiometer or a remote control UP/DOWN can be used. During
welding (turning the potentiometer).
NOTE 2: Bottom display shows speed of wire shift only if red LED SETTING and
LED "m/min" are on.
ADJUSTMENT OF OTHER WELDING PARAMETERS
Controlling electronics of machines PROCESSOR and SYNERGIC enables ad‐
justment of the following welding parameters:
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Time duration of gas fore‐blow (time of protective gas fore‐blow before
the beginning of welding process).
•
Time of start of wire shift speed ‐ function SOFT START (time of start
from minimum shift speed up to value of adjusted welding wire speed).
•
Approaching wire speed (table 4)
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Speed of wire shift m/min (speed of wire shift during welding).
•
Time of switching off interval of welding voltage on arc opposite wire
shift: „burning out" of wire towards the torch top.
•
Time of gas afterblow after finishing welding process.
Setting gas fore‐blow
Press button SET until you switch on LED marked in the picture.
Use the potentiometer to
Adjustment of wire burning out
Press button SET until you switch on LED marked in the picture.
Use the potentiometer to set up required value of wire burning out within sec.
time of
Setting of gas afterblow
gas
afterblow
Press button SET until you switch on LED marked in the picture.
(s)
0,1‐10
0,1‐10
0,1‐10
0,1‐10
Use the potentiometer to set up required value of gas afterblow time 0‐5 sec.
ADJUSTMENT OF THE START OF WIRE SPEED ‐ THE FUNCTION SOFT‐START
Adjustment of the function SOFT‐START which secures an error‐free start of
the welding process SOFT‐START enables adjustment of the following para‐
meters:
•
the start time of welding wire speed from minimum speed up to adjustt‐
ed welding speed
•
approaching wire speed before welding arc ignition
Both the functions work in a different way. For a softer start approaching wire
speed is recommended ‐ the second option.
‐ 27 ‐
set up required value of gas fore‐blow time within sec.