Fronius Acerios, Operating Instructions Manual

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Stray Currents If the following instructions are not observed, stray currents may occur, which
pose a risk of the following:
- Fire
- Overheating of components connected to the workpiece
- Destruction of ground conductors
- Damage to the device and other electrical equipment
Ensure a proper connection between the hosepack and the plasma power source.
Ensure a proper connection between the plasma nozzle and the plasma torch.
If the floor is electrically conductive, ensure that there is sufficient insulation
between the device and the floor.
EMC Device
Classifications Devices in emission class A:
- Are only designed for use in industrial settings
- Can cause line-bound and radiated interference in other areas
Devices in emission class B:
- Satisfy the emissions criteria for residential and industrial areas. This is also
true for residential areas in which the energy is supplied from the public low-
voltage grid.
EMC device classification as per the rating plate or technical data.
EMC Measures In certain cases, even though a device complies with the standard limit values for
emissions, it may affect the application area for which it was designed (e.g., when
there is sensitive equipment at the same location, or if the site where the device
is installed is close to either radio or television receivers).
If this is the case, then the operating company is obliged to take appropriate ac-
tion to rectify the situation.
Test and assess the immunity of equipment in the vicinity of the device in ac-
cordance with national and international provisions. Examples of interference-
prone equipment that could be affected by the device:
- Safety devices
- Grid power lines, signal lines, and data transfer lines
- IT and telecommunications equipment
- Devices for measuring and calibrating
Supporting measures to avoid EMC problems:
1
. Grid power supply
- If electromagnetic interference occurs despite a grid connection that
complies with regulations, take additional measures (e.g., use a suitable
grid filter).
2 . Route the hosepack far away from other lines
3 . Equipotential bonding
4 . Workpiece grounding
- If necessary, establish grounding using suitable capacitors.
5 . Shield, if necessary
- Shield other devices in the vicinity
- Shield the complete system
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