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2 Safety
2.1 Safety
When designing AC drives, some residual dangers cannot be avoided constructively. One example is the discharge time, which is
very important to observe to avoid potential death or serious injury. For the Danfoss VLT® drives, the discharge time is from 4–40
minutes depending on the drive size.
For further information on safety precautions, refer to the product-specific Operating Guide.
2.2 Safety Symbols
The following symbols are used in this manual:
D A N G E R
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
W A R N I N G
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
C A U T I O N
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
N O T I C E
Indicates information considered important, but not hazard-related (for example, messages relating to property damage).
2.3 Qualified Personnel
To allow trouble-free and safe operation of the unit, only qualified personnel with proven skills are allowed to transport, store, as-
semble, install, program, commission, maintain, and decommission this equipment.
Persons with proven skills:
Are qualified electrical engineers, or persons who have received training from qualified electrical engineers and are suitably ex-
perienced to operate devices, systems, plant, and machinery in accordance with pertinent laws and regulations.
Are familiar with the basic regulations concerning health and safety/accident prevention.
Have read and understood the safety guidelines given in all manuals provided with the unit, especially the instructions given in
the Operating Guide.
Have good knowledge of the generic and specialist standards applicable to the specific application.
AJ300847815559en-000101 / 130R0337
12 | Danfoss A/S © 2020.09
Safety
VLT® AQUA Drive FC 202
Design Guide