Access Control; Voltage Reducing Device - EWM T4.02 Operating Instructions Manual

5.4

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 5.6 chapter.
Enabling the access block
• Enter the access code for the access block: select the
(0–999).
• Enable access block: Set parameter to
Disabling the access block
• Enter the access code for the access block: Select the
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
999).
• Change the access block: Once the display shows
• If the entry is incorrect, the display shows
The factory setting for the code is
5.5

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 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).
099-00T402-EW501
02.07.2020
Functional characteristics
menu and enter the valid numerical code
.
.
, assign a new numerical code (0–999).
.
.
menu and enter the numerical code (0–
menu and enter the numerical code (0–
Access control
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