Activating The Vrd Device - CEA DIGITECH vision PULSE Series Operator's Manual

PARAMETER DISPLAY S
PARAMETER SELECTION LED - A
PARAMETER SELECTION K
WELDING MODE SELECTION K
WELDING MODE SELECTION LED
PARAMETER DISPLAY S
CREEN
PARAMETER SELECTION LED - A
ENCODER K - A
NOB
HOLD F LED
UNCTION
PARAMETER DISPLAY S
CREEN
PARAMETER SELECTION LED - V
PARAMETER SELECTION K
EY
ENCODER K - V
NOB
SPECIAL FUNCTIONS (F ) K
X EY

6 - ACTIVATING THE VRD DEVICE

The Voltage Reduction Device (VRD) is a safety device that reduces voltage. It prevents voltages forming on the output termi-
nals that may pose a danger to people. The standard settings and those defined beforehand by do not provide for the VRD to be
active on the welding machine and so the VISION S
If the operator wishes to weld in MMA using the VRD device (which must be done with the welding machine switched off), they must:
1) Use a suitable screwdriver to unscrew the 4 screws that fix the DH control panel to the welding machine.
2) Remove the "VRD" JUMPER on the DIGITAL INTERFACE PCB (see figure).
3) Use a suitable screwdriver to tighten the 4 screws that fix the DH control panel to the welding machine.
4) Start the welding machine by turning the switch on the rear panel to position I.
When it switches on, but with the machine in stand-by, the DH control panel shows that the VRD device is active (indication on
the VISION S green colour - see enclosed image: MMA - PRE-SETTING).
CREEN
During the welding phase the VRD device is activated (indication on the VISION S
ing of the welding machine) - see enclosed image: MMA - WELDING) and when welding is ended the voltage will be reduced
within a maximum time of 0,3 seconds.
"HT4" CONTROL PANEL
- A
CREEN
- A
EY
ENCODER K - A
NOB
WIRE K
EY
EY
- A
Displays the value of the parameter WELDING CURRENT ( ).
The LED unit shows the WELDING CURRENT ( ) switched on.
Adjusts the WELDING CURRENT ( ) parameter, interrupting the HOLD Function.
Flashes for a set time, informing the operator that the HOLD Function is active.
- V Shows the parameter indicated by the PARAMETER SELECTION LED - V.
The LED unit indicates the welding parameter selected using the PARAMETER SELECTION K
- V.
Scrolls in succession the parameters HOT START ( ) - WELDING VOLTAGE ( ) - ARC
- V
FORCE ( ) only on the HT4 panel.
In this case the values displayed are those for HOLD (only for the welding voltage).
Adjusts the parameter displayed by the PARAMETER DISPLAY S
Function.
Only enables entering, interrupting the HOLD Function and exit afterwards from the
SPECIAL FUNCTIONS Menu (SET UP Fx) on the HT4 panel and not on the DH panel.
CREEN
does not normally provide any indication.
CREEN
44
HOLD Function LED
PARAMETER DISPLAY S
CREEN
PARAMETER SELECTION LED - V
PARAMETER SELECTION K
EY
ENCODER K - V
NOB
GAS K
EY
SPECIAL FUNCTIONS (F ) K
X
SPECIAL FUNCTIONS (F ) LED
X
- V interrupting the HOLD
CREEN
red colour (does not indicate malfunction-
- V
- V
EY
EY
MMA