Fronius MagicWave 2600 Operating Instructions/Spare Parts List page 56

MAINS ON/OFF SWITCH (see Fig.9)
DIGITAL-AMMETER
- Indicator of the main current
ð desired welding current
Command value
ð actual welding current
Actual value
DIGITAL-VOLTMETER
- Indicator of the welding voltage
FUNCTION BUTTON
a) 2-step operation
b) 4-step operation
c) 2-step operation
d) 4-step operation
- Arc force control and hot-start devices are out of action
- When the TR 50mc, TR 51mc and TR 52mc remote-control
units are used, the system switches over to the operating
mode in question automatically
- LED indicators or
e) MANUAL ELECTRODE WELDING
- LED indicator lights up and the digital voltmeter indicates
the open-circuit voltage.
- The welding characteristics are governed by the values for
ARC FORCE and HOT-START which are fixed in the machi-
ne itself.
- It is possible to influence these parameters from outside via
the TPmc remote control unit and the inert menue at function
selector switch position
LED INDICATOR for manual electrode welding
- Select via function button
- LED indicator lights up (for main current I
- Welding current is present in the current sockets
- Welding current is either adjusted with the main current re-
gulator , or via the dial
LED INDICATOR for contact ignition
- Select via function button
- Lights up together with either LED
- To ignite the arc, touch the workpiece with the tungsten
electrode after pressing the torch trigger.
- The short-circuit current flowing when contact is made bet-
ween the electrode and the workpiece corresponds to the
minimum current.
Where to use contact ignition: Whenever the HF used in
contact-free ignition would cause external interference.
LED INDICATOR FOR 4-STEP MODE
4-step mode
4-step mode - without intermediate lowering
- In the manual or automatic welding modes, for flawless
welding joints
- Pre-settable parameters such as gas pre-flow, start arc,
upslope time, main current, downslope time, crater-fill cur-
rent and gas post-flow time
- In the "PRESETTINGS LEVEL ---" program-level (see "Wor-
king with the program-levels"), parameter TIG, the setting
for SFS must be set to "OFF"
Functional sequence (Fig.4):
1. Pull back and hold the torch trigger
- Gas pre-flow time elapses
- Arc ignites at the pre-set value for start-arc current I
HF ignition: HF cuts out automatically after ignition)
- LED indicator lights up
TIG-welding with
}
HF-ignition
+
TIG-welding with
}
contact ignition
+
resp. + or + lights up
) only at welding
H
on the TPmc remote control unit
or LED
2. Release trigger
- Welding current rises via the pre-set upslope to the value set
on dial
- LED lights up
3. Pull back and hold the torch trigger once again
- Welding current drops during the pre-set time (downslope,
dial ) until it reaches the value set for the crater-fill current
I (dial
E
- LED lights up
4. Release the torch trigger
- Arc goes out
- The internally pre-set gas post-flow time elapses
Pull back and hold the torch trigger
Release the torch trigger
Pull back and hold the torch trigger
Release the torch trigger
I
I
S
Fig. 4 Functional sequence in 4-step mode - without intermediate lowering
,
4-step mode - with intermediate lowering (Fig.4a)
- Activated from TIG torch with double-pushbutton function
- Intermediate lowering down to reduced current I
- Facility for lowering the welding current from the main
current to the reduced current I
interrupting the welding sequence
- In the "PRESETTINGS LEVEL ---" program-level (see "Wor-
king with the program-levels"), parameter TIG, the setting
for SFS must be set to "OFF"
Pull back and hold the torch trigger
Release the torch trigger
Push forward and hold the torch trigger
Release the torch trigger
Pull back and hold the torch trigger once again
Release the torch trigger
I
I
S
(with
S
Fig. 4a Functional sequence in 4-step mode - Variant I - with intermediate
lowering
4
for the welding current I
H
, crater-filling)
I
H
I
H
I
E
I
E
t
:
E
and back, without
E
I
H
I
E
t