Functional characteristics
Access control
099-5TLPXQ-EW501
29.01.2021
51
5.6 Access control
To prevent people from unauthorised or inadvertent changing of the welding parameters at the machine,
entering values on the control can be blocked by using the key switch.
With the key switch in position , all functions and parameters can be configured without any restriction.
In the key position the following functions or parameters can not be changed:
• No adjustment of the operating point (welding power) in programs 1 - 15.
• No change of welding type or operating mode in programs 1 - 15.
• No welding task switching (JOB block operation P16 is possible).
• No change of special parameters (except P10). Restart is required.
Saving or deleting favourites is locked.
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 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).
