Functional characteristics
Access control
40
099-00T406-EW501
13.07.2017
4.4
Access control
The machine control can be locked to secure it against unauthorised or unintentional adjustment. The ac-
cess block has the following effect:
• The parameters and their settings in the machine configuration menu, Expert menu and operation se-
quence can only be viewed but not changed.
• Welding procedure and welding current polarity cannot be changed.
The parameters for the access block are configured in the machine configuration menu
> see 4.6 chapter
.
Enabling the access block
• Enter the access code for the access block: select the
menu and enter the valid numerical code
(0
–999).
• Enable access block: Set parameter to
.
Disabling the access block
• Enter the access code for the access block: Select the
menu and enter the numerical code (0
–
999).
• Disable access block: Set parameter to
.
The only way to disable the access block is to enter the selected numerical code.
Changing the access block
• Enter the access code for the access block: Select the
menu and enter the numerical code (0
–
999).
• Change the access block: Once the display shows
, assign a new numerical code (0
–999).
• If the entry is incorrect, the display shows
.
The factory setting for the code is
.
4.5
Voltage reducing device
Only machine variants with the (VRD/AUS/RU) code are equipped with a voltage reduction device (VRD).
The VRD is used for increased safety, especially in hazardous environments such as shipbuilding, pipe
construction or mining.
A VRD is mandatory in some countries and required by many on-site safety instructions for power
sources.
The VRD
> see 3 chapter
signal light is illuminated when the voltage reduction device is operating without
fault and the output voltage is reduced to a value specified in the relevant standard (see technical data).
