Telwin INVERSPOTTER 13500 smart aqua Manuel D'instructions page 7

Pre-heat time (Pre-spot): time during which the current is kept at a lower
level than the spot welding current to heat the panels before spot welding.
This parameter is useful for eliminating the panel coating if present
(galvanizing). The parameter can be excluded by setting the value at zero.
Cold time or Pause: (only if the Pre-spot is active or with impulse spot
welding) time between one current impulse and the next one – range from 10
ms to 400 ms.
Slope time: time used by the current to reach the maximum set value. This
time is applied to the first impulse only when in the pneumatic clamp impulse
function – range from 0 to 1 second.
Spot welding time: time during which the spot welding current is kept almost
constant. This time refers to the duration of a single impulse when in the
pneumatic clamp impulse function – range from 10 ms to 1 second.
Number of impulses: (only for impulse spot welding) number of spot
welding current impulses, each one lasting the same time as the set spot
welding time – range from 1 to 10.
Post heating time (Post spot): time during which the current is kept at a
level that is lower than the spot welding current to slow panel cooling after
spot welding. This parameter is useful for increasing the spot seal in high-
resistance panels. The parameter can be excluded by setting the value at
zero.
1 - Selection key for modifying the spot welding parameters
Follow the procedure described in paragraph 6.2.5 to:
a) obtain a sequential display of the spot welding parameters:
power/current issued, squeeze power/time, pre-spot weld time, cold time, slope
time, spot welding time, number of impulses (only in pulsed mode), post spot weld
time.
b) modify the displayed spot welding parameters and personalise a program.
2 - Function and tool selection key
Pneumatic clamp operation with continuous spot welding current:
The spot welding cycle begins with a squeeze time, continues with a pre-spot time and
a pause (these parameters can be excluded), a ramp time (can be excluded), a spot
welding time, and ends with a post-spot time (can be excluded).
Pneumatic clamp operation with "pulsed" spot welding current:
The spot welding cycle begins with a squeeze time, continues with a pre-spot time
(this parameter can be excluded), a pause, a slope time (can be excluded), a spot
welding time, a series of impulses (see "Number of impulses" in this section), and
ends with a maintenance time that cannot be set.
This function improves spot welding capacity on coated panels (galvanized) or on
panels with special protective films.
Studder function (only with studder gun).
This function can only be selected by connecting the studder gun correctly to the outlet
in the standard clamp (see paragraph 5.9 connecting the studder).
The work that can be done with this function is schematized on the control panel (fig.
C) with the following meaning:
Spot welding with suitable electrodes of: plugs, rivets, washers, special
washers, wavy wire.
Spot welding with relative electrode of screws Ø 4 mm.
Spot welding with suitable electrode of: screws Ø 5÷6 mm and rivets Ø
5 mm.
Spot welding with suitable electrode on only one side of the panel.
Panel tempering with carbon electrode.
Panel upsetting with relative electrode.
Intermittent spot welding with relative electrode for patching on sheet.
3 - "Cursor" keys:
Move the cursor inside the Display.
4 - Double function encoder:
a) BASIC FUNCTION: variation of the selected values.
Rotate the knob: to select a value from among those available for a given function.
b) SPECIAL FUNCTION: "ENTER" – confirms the selected value
Press the knob: to confirm the selected value.
5 - Double function key:
a) BASIC FUNCTION: "MODE" - sequential key.
When pressed in sequence, this key activates these modes:
SEMI-AUTOMATIC MODE (8-pin plug of the clamp disconnected from the outlet
shown in fig. B-4);
- EASY: two equal panels;
- PRO: two equal or different panels;
- MULTI: three equal or different panels;
AUTOMATIC MODE (8-pin plug of the clamp connected to the outlet shown in fig.
B-4);
- SMART AUTO: all the parameters are automatically set by the machine;
MANUAL MODE (see paragraph 6.2.5):
- CUST(*): Custom = List of personalised spot welding programs.
MAINTENANCE: electrode squeeze without current, automatic or manual force
setting, arm length and electrode (**) setting, flat (type a), point (type b), or
spherical (type c).
NOTES:
(*) The "CUST" and "MAINTENANCE" modes can only be accessed if the
"ADVANCED MENU" function is active. Refer to paragraph 4.2.2 "Special
key combinations".
(**) The sizes and shape of the electrodes comply with the ISO 5821 Standard.
In any case, refer to the spare parts list.
b) Special FUNCTION: "MENU".
To access the "MENU" function, keep the "MODE" key pressed for at least 3
seconds.
To exit from "MENU", keep the key pressed again for 3 s.
Use the key to access these secondary functions:
- VERSION of the current software.
- LANGUAGE (user language setting).
- DATE (current date setting).
- TIME (current time setting).
c) Special FUNCTION: "MENU" with USB flash drive inserted or PC connected
to the machine.
To access this function, keep the "MODE" key pressed for at least 3 seconds.
To exit from "MENU", keep the key pressed again for 3 s.
Use the key to access these additional functions, but ONLY IF the USB drive or the
PC is connected to the machine.
- SAVE RECORD (saves a spot welding operation).
- EXPORT PROGRAMS (exports the CUSTOM programs to an external memory).
- IMPORT PROGRAMS (imports the CUSTOM programs to an external memory).
- UPDATE FIRMWARE.
Note: for a more in-depth description refer to the quick guide for the "MENU"
functions.
6 - "ESC" key:
Use to exit from the active selection and return to the initial display without saving any
modifications that have been made.
ATTENTION! Pressing "ESC" and "MODE" simultaneously when the
machine is started recalls the factory settings; the personalised programs will
be cancelled!
7 - Display:
Shows all the information needed by the user to set spot welding according to the
functions used.
8 - "START" key:
To start the machine for normal operation or after an alarm situation.
NOTE: The display shows the operator, when necessary, that the "START" pushbutton
must be pressed in order to use the machine.
9 - General alarm LED, spot welding LED, recording LED:
Yellow general alarm LED
overvoltage, undervoltage, no phase, no air, no liquid, accidental spot welding short
circuit alarms cut in.
Red "spot welding" LED
Red "REC" (recording) LED
parameters of the spot to be carried out.
NOTE: The information is ONLY recorded in the USB flash drive.
4.2.2 Special key combinations
- Keep first START, then the Left cursor
EFFECT: activation/disabling of the protected mode that stops the machine when
any warning signal or alarm (see TAB. 1) is displayed. Reset the machine by
pressing the START push-button.
- Keep the Left cursor,
seconds.
EFFECT: activation/disabling of the ADVANCED MENU, which can be used to
access the CUST (Custom) and MAINTENANCE modes.
NOTE: in both combinations the user state is saved and maintained, even when
the machine is switched off and back on again.
4.2.3 Pressure adjustment group and manometer (fig. B-10)
Use to adjust the pressure applied at the pneumatic clamp electrodes using the
adjustment knob (only for pneumatic clamps in the "Manual" mode).
4.3 SAFETY AND INTERLOCK FUNCTIONS
4.3.1 Safeguards and alarms (TAB. 1)
a) Thermostatic safeguard:
It cuts in if the spot welder becomes too hot because there is no cooling liquid or if
the liquid flow rate is not sufficient, or if a work cycle exceeds the permitted limit.
The yellow LED on the control panel lights up when this safeguard cuts in.
The alarm is shown on the display by:
AL 1 = thermal safety alarm.
AL 2 = clamp thermal alarm.
AL 8 = studder thermal alarm.
EFFECT: movement stopped, electrodes opened (cylinder to discharge); current
stopped (welding impeded).
RESET: manual ("START" pushbutton pressed after the limits have returned within
those permitted – the yellow LED
b) Main switch:
- Position "O" = open and lockable (see chapter 1).
WARNING! The internal terminals (L1+L2+L3) for connecting the power cable
are live when the main switch is at "O".
- Position "I" = off: spot welder powered but not operating (STAND BY –the
"START" pushbutton needs to be pressed).
- Emergency function
While the spot welder is operating, opening (pos. " I "=>pos "O" ) determines a
stop in safety conditions:
- current inhibited;
- electrode opening (cylinder to discharge);
- automatic restarting inhibited.
WARNING! PERIODICALLY MAKE SURE THE SAFETY STOP IS
OPERATING CORRECTLY
c) Cooling system safeguard
This is triggered in the event of no or loss of cooling liquid pressure;
The alarm event is signalled on the display by AL 7 = no liquid alarm.
EFFECT : all movement is blocked, electrodes open (cylinder discharged); power
is shut down (welding disabled).
RESTART : top-up with cooling liquid then switch off and reboot the machine (see
- 7 -
: lights up when the thermostatic safeguards, the
: remains lit during the whole spot welding cycle.
: lights up when the machine is set to record the
pressed for at least three seconds.
then the Right cursor pressed for at least three
switches off).