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relative error code.
The power board (56) receives the temperature signals
from the NTC sensors located the secondary diodes group
dissipater (connected to J7) and module IGBT dissipater
(connected to J8).
The operation of the fans (26) is subject to the conditions
of the generator and are activated in the following condi-
tions:
- when the machine is switched on
- during the welding and in the 3 minutes following the
welding end.
The panel board (47) contains the main power source
microprocessor and supervises management of the
complete power source functions.
On panel board (47) are generated the reference signal
to be sent to the INV board, for the inverter control and
the power supply voltage for the wire feeder motor (11),
adjusted according to the selected welding program
requirements.
The panel board (47) contains the circuit for adjusting
the wire feeder motor (11) speed, which in this case are
provided with speed feedback signal obtained by the
encoder incorporated in the motor (11).
The welding programs predefined by Cebora (synergic
curves) are stored in the panel board (47).
For their update and for the power source firmware
update, on the front panel of the machine there is both the
programming connector BD1-RS232 (5) and USB (6) (see
Fig.3.2.a / b).
The panel board (47) also acts as power source control
panel and contains the display touch (1) and multifunction
knob (2) to perform the supervision and management of
the complete power source (see Instructions Manual).
The power source output terminals are located on the front
panel.
For MIG torch it is predisposed a central adapter (3)
that includes a power socket, two contacts for the start
command and a pneumatic fitting for the gas.
For the ground cable a GIFAS attack (4) is available.
On power source rear panel is located the socket (15),
protected by the fuse (10) and the connector (14) for
cooling unit connection (optional), (see Fig. 3.2.c/d).
2.4
Programming, firmware update.
The power source programming or firmware updating are
possible with "Cebora Device Manager" or the " Power
Source Manager".
"Cebora Device Manager" and " Power Source Manager"
they are programs, downloadable from the Cebora web
site http://www.cebora.it, that has to be installed into a PC
with Windows operating system, equipped with RS232
serial port or appropriate USB adapter.
By connecting the PC to the power source (5) connector,
equivalent to the RS232 connector, is possible to program
3302339/A
the power source, other than performing the diagnostic
capabilities of the program.
In the Cebora web site are available the program files to
install in the equipments (files named *.ceb or *.fwu) and
the Instructions Manual to help in using Cebora Device
Manager.
If you do not have a PC, you only have the possibility to
program it via a USB stick. On the USB stick, create a di-
rectory called "Bin", copy it inside the file "* .fwu", insert
the USB stick into the connector (6). On the touch display
(1) access to the Menu - Settings - USB Management, fol-
low the instructions on the display.
2.5
GRV14 Cooling Unit.
Available as option.
The GRV14 cooling unit is powered with two phases of the
mains voltage, drawn from the power board (56), through
the services transformer (54) primary winding that act as
autotransformer (400/220 Vac).
The power board (56), acts as a connection interface be-
tween the unit components and the actual control circuit,
the panel board (47) of the power source, to which it is
connected (via CAN line with INV board).
More specifically, the "enable cooling unit" signal of the
panel board (48) commands the RL1 relay on the power
board (56), which directly powers the coolant pump (26)
and the fans (2).
The pressure switch (23), inserted in the hydraulic circuit
on the pump (26) delivery, provides the isolated signal for
the fluid pressure to the panel board (47), through the pow-
er board (56).
Upon power source start-up, the panel board (47) checks
whether the cooling unit is connected, by means of the sig-
nal provided by the jumper on terminals 1 and 2 of the
connector (9) on cooling unit (Fig. 3.3.13).
With the connector (9) disconnected, or with the jumper
interrupted, the cooling unit is disabled and the operating
mode selection from control panel is not possible; if the
cooling unit is already enabled, you will have the power
source block with indication of the relative error code.
If set to continuous or automatic mode (see Instructions
Manual), when the unit is switched on the pump (26) and
fans (2) will operate for 30 seconds, to fill the torch tubes
and check the pressurization of the hydraulic circuit; if no
welding command is received from the operator, they will
then stop awaiting a new start command.
If the pressure switch (23) does not detect the appropriate
pressure within 30 seconds after start-up, the panel board
(47) orders the power source block, with appropriate error
indication on control panel.
In automatic mode the pump and fans start running when
welding begins and stop 3 minutes after welding has stopped.
In continuous mode the pump and fans are always kept
running. Only a lack of pressure can stop them, along with
the power source.
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