7
HOLD
The HOLD parameter is used with the pneumatic gun only. It describes the time elapsing between the end of the welding
process and the opening of the electrode .it enables a shorter cooling of the welding spot and avoids its stress before a
proper cooling. When using a hand-operated gun, set this parameters to 01, even thought it is correct to wait 0,2
÷
1” since
the end of the welding process before opening the electrodes in order to enable the spot to consolidate
COMPENSATION (COMP.ON / COMP. OFF)
By setting this parameter to 01 the secondary current compensation function is turned on. By setting the parameters to 00
the function is shut off. When working, the relevant led shows that this function is activated.
PARAMETERS CONCERNING THE MULTIFUNCTION GUN WORKING CYCLE (YELLOW COLOUR)
WELDING TIME
The WELDING TIME parameter indicates the current flow duration. It will be carried out with the same value of power
indicated in parameter CURRENT.
CURRENT
The value expressed in CURRENT indicates the welding operating power.
HEATING
By setting this parameter to 01 the heating function is turned on. When this function is operating, the welder supplies
current according to the value set in the CURRENT parameter as long as the start cycle device is an activated. Because
of safety reasons, a maximum limit of 4 seconds has been set; If this time is not enough for carrying out the desired
heating, first release and than depress once again the start cycles trigger. When working the relevant led shows that this
function is activated.
WELD / NO WELD
For both working cycles (gun and multifunction gun), the function WELD / NO WELD is always activated.
This function enables to carry out test welding cycles without current flow. With the parameter set to 01 the control unit
will carry out standards welding cycles. When it is set to 00 the control unit will carry out complete test cycles without
welding current even through all the welding time parameters are kept enabled. When working, the relevant led shows
that the function is set to WELD.
SECONDARY CURRENT COMPENSATION FUNCTION
The compensation function of secondary current is available only for the gun and it is used to facilitate the welding
process of oxidised metal and rods.
Oxidation blocks the current flow during the first welding phase, limiting, in a different way depending from the welding
process, the real time of current flow.
The compensation function controls the welding current by means of a coil located inside the secondary circuit. Until the
welding current does not exceed a limit of about 1500÷. 2000A, the welding time is automatically extended up to a limit of
99 cycles. In this way it is possible to carry out welding processes with an always-constant real time of current flow. If,
after having reached the 99 welding periods limit, the current limit has not been exceeded,
the control unit will indicate
that displaying the E4 error has not correctly carried out the welding process, and will block the welder
functioning
. To reset the functioning, press any key.
CONTROL PANEL PILOT LIGHTS
ON
It indicates that the control unit is on
START 2
It indicates that the start cycle device coming from the multifunction gun is
activated
START 1
It indicates that the start cycle device coming from the gun is activated
AUX
It indicates that the block control with pressure only is on. This input is activated
by the “pressure only” device of the pneumatic gun
SOLENOID VALVE
It indicates that the solenoid valve is activated
CURRENT
It indicates that the control unit is generating the control impulse for SCR
