iv HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07
Symbol Definitions
The following table lists those symbols that may be used in this document to denote certain conditions.
Symbol Definition
This DANGER symbol indicates an imminently hazardous situation, which,
if not avoided, will result in death or serious injury.
This WARNING symbol indicates a potentially hazardous situation, which, if
not avoided, could result in death or serious injury.
This CAUTION symbol may be present on Control Product instrumentation
and literature. If present on a product, the user must consult the
appropriate part of the accompanying product literature for more
information.
This CAUTION symbol indicates a potentially hazardous situation, which, if
not avoided, may result in property damage.
WARNING
PERSONAL INJURY: Risk of electrical shock. This symbol warns the user of a
potential shock hazard where HAZARDOUS LIVE voltages greater than 30 Vrms,
42.4 Vpeak, or 60 Vdc may be accessible. Failure to comply with these
instructions could result in death or serious injury.
ATTENTION, Electrostatic Discharge (ESD) hazards. Observe precautions for
handling electrostatic sensitive devices
Protective Earth (PE) terminal. Provided for connection of the protective earth
(green or green/yellow) supply system conductor.
Functional earth terminal. Used for non-safety purposes such as noise immunity
improvement. NOTE: This connection shall be bonded to protective earth at the
source of supply in accordance with national local electrical code requirements.
Earth Ground. Functional earth connection. NOTE: This connection shall be bonded
to Protective earth at the source of supply in accordance with national and local
electrical code requirements.
Chassis Ground. Identifies a connection to the chassis or frame of the equipment
shall be bonded to Protective Earth at the source of supply in accordance with
national and local electrical code requirements.
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