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Functional characteristics
Access control
5.6
Access control
The machine control can be locked to secure it against unauthorised or unintentional adjustment. The
access 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 setting the access block are configured in the machine configuration
menu > see 5.9 chapter.
Enabling access block
•
Assign the access code for the access block: Select parameter
999).
•
Enable access block: Set parameter
The access block activation is indicated by the "Access block active" signal light > see 4 chapter.
Disabling access block
•
Enter the access code for the access block: Select parameter
number code (0–999).
•
Disable access block: Set parameter
access block is to enter the selected number code.
5.7
Voltage reducing device
Only machine variants with the (VRD/SVRD/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 4.1.2 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).
5.8
Dynamic power adjustment
This requires use of the appropriate mains fuse.
Observe mains fuse specification!
This function enables aligning the machine to the mains connection fusing to avoid continuous tripping of
the mains fuse. The maximum power input of the machine is limited by an exemplary value for the exi-
sting mains fuse (several levels available).
You can predefine this value in the machine configuration menu > see 5.9 chapter using parameter
The function automatically adjusts the welding power to an uncritical level for the mains fuse.
When using a 25-A mains fuse, a suitable mains plug has to be installed by a qualified electri-
cian.
52
to access block enabled
to access block disabled
and select a number code (0–
.
and enter the previously selected
. The only way to disable the
099-00T501-EW501
.
1.8.2022
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