ORDER NUMBER11.....................................................
Rights reserved to alter specifications without notice.
TOCe
- 2 -
GB
1INTRODUCTION
The manual describes use of A32, A33 and A34 control panels.
For general information about operation see user's instructions for the power source.
When mains power is supplied the unit runs a self diagnosis of the
LEDs and the display, the program version is displayed and in this
example the program version is 0.18.
NOTE! Differences in the panel function may occur, depending on in which product it
is installed.
Instruction manuals in other languages can be downloaded from the website,
www.esab.com.
1.1Control panel A32
Display
Knob for setting the current
Choice of welding method MMA or TIG
Setting from panel or connecting remote control unit
Display of VRD function (reduced open-circuit voltage) .
Measured value in the display for welding current A, is arithmetic average value =
rectified average value.
The setting range is dependent on the power source used.
2)
Hidden function
2.2Symbol and Function explanations
1)
xxx100
2)
2)
2)
xx0
xx5
2)
x
2)
x
OFF
MMA welding
MMA welding may also be referred to as welding with coated electrodes. Striking the
arc melts the electrode, and its coating forms protective slag.
Setting current
A higher current produces a wider weld pool, with better penetration into the
workpiece.
Active panel
Settings are made from the control panel.
Remote control unit
Settings are made from the remote control unit.
The remote control unit must be connected to the remote control unit socket on the
machine before activation. When the remote control unit is activated the panel is
inactive.
Hot Start
Increases the welding current during a fixed time at the start of the welding process.
Set the value of the hot start current by using the knob. This reduces the risk of
incomplete fusion at the start of the weld.
Arc force
The arc force is important in determining how the current changes in response to a
change in the arc length. A lower value gives a calmer arc with less spatter.
The VRD function ensures that the open-circuit voltage does not exceed 35 V when
welding is not being carried out. This is indicated by a lit VRD LED.
The VRD function is blocked when the system senses that welding has started.
If the VRD function is activated and the open-circuit voltage exceeds the 35 V limit,
this is indicated by an error message (16) appearing in the display and welding
cannot be started whilst the error message is displayed.
Contact an authorised ESAB service technician to activate the function.
2.3Hidden functions MMA welding
There are hidden functions in the control panel.
To access the functions in A32, use the method button, .
To access the functions in A33 and A34, hold button depressed for 5 seconds.
The display shows a letter and a value. The correct function is selected by pressing
the buttons. The knob is used to change the value of the selected function.
Function letterFunction
CArc Force
HHotstart
dDrop welding
To leave the function in A32, hold the button depressed for 5 seconds. For
A33 and A34, hold the button depressed for 5 seconds.
Arc force
The arc force is important in determining how the current changes in response to a
change in the arc length. A lower value gives a calmer arc with less spatter.
Hot Start
Increases the welding current during a fixed time at the start of the welding process.
Set the value of the hot start current by using the knob. This reduces the risk of
binding defects at the start of the weld.
Drop welding can be used when welding with stainless electrodes. The function
involves alternately striking and extinguishing the arc in order to achieve better
control of the supply of heat. The electrode needs only to be raised slightly to
extinguish the arc.
3TIG WELDING
3.1Settings
FunctionSetting rangeA32A33A34Default
value
Current4 max
Active panelOFF or ONxxxON
Remote control unitOFF or ONxxxOFF
VRD-xxx-
1)
The setting range is dependent on the power source used.
1)
xxx60 A
3.2Symbol and Function explanations
TIG welding
TIG welding melts the metal of the workpiece, using an arc struck from a tungsten elec
trode, which does not melt itself. The weld pool and the electrode are protected by
shielding gas.
”LiveTig start”
With “LiveTig start” the arc strikes when the tungsten electrode is brought into
contact with the workpiece and then lifted away from it.
The remote control unit must be connected to the remote control unit socket on the
machine before activation. When the remote control unit is activated the panel is
inactive.
VRD (Voltage Reducing Device)
The VRD function ensures that the open-circuit voltage does not exceed 35 V when
welding is not being carried out. This is indicated by a lit VRD LED.
The VRD function is blocked when the system senses that welding has started.
If the VRD function is activated and the open-circuit voltage exceeds the 35 V limit,
this is indicated by an error message (16) appearing in the display and welding
cannot be started whilst the error message is displayed.
Contact an authorised ESAB service technician to activate the function.
4WELDING DATA MEMORY
Two different welding data programs can be stored in the control panel memory.
Press button or for 5 seconds to store the welding data in the
memory. The welding data is stored when the green indicator lamp starts to flash.
To switch between the different welding data memories press button or
.
The welding data memory has a back-up so that the settings remain even if the
machine has been switched off.
Fault codes are used to indicate that a fault has occurred in the equipment. It is
indicated in the display by an E followed by a fault code number.
A unit number is displayed to indicate which unit has generated the fault, for example
U 0.
If several faults have been detected only the code for the last occurring fault is
displayed. Press any function button or turn the knob to remove the fault indication
from the display.
NOTE! If the remote control unit is activated, deactivate the remote control unit by
pressing to remove the fault indication.
5.1List of fault codes
Unit number:
U 0= welding data unitU 2= power source
U 4= remote control unit
5.2Fault code descriptions
The fault codes that the user can correct themselves are given below. If a different
code appears, call a service technician.
Fault
code
E 6High temperature
E 14Communication error (bus off)
E 16High open-circuit voltage
E 19Memory error
Description
The thermal overload cut-out has tripped.
The current welding process is stopped and cannot be restarted until the temperature has
fallen.
Action: Check that the cooling air inlets or outlets are not blocked or clogged with dirt.
Check the duty cycle being used, to make sure that the equipment is not being overloaded.
Serious interference on the CAN bus.
Action: Check that there are no faulty units connected on the CAN bus. Check the cables.
Send for a service technician if the fault persists.
Open circuit voltage has been too high.
Action: Turn off the mains power supply to reset the unit. Send for a service technician if
the fault persists.
Content of existing memory is incorrect. Basic data will be used.
Action: Turn off the mains power supply to reset the unit. Send for a service technician if