Access Control; Voltage Reducing Device - EWM T 4.01 Operating Instructions Manual

5.5

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
sequence 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 5.7 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.
5.6

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 4 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).
099-00T401-EW501
21.06.2018
Functional characteristics
to access block enabled
to access block disabled
Access control
and select a number code (0–
.
and enter the previously selected
. The only way to disable the
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