Hardware Overview
1-11
SIMATIC PCS 7 OSx 4.0.0 Hardware (PA RISC)
The
OSx system requires an isolated AC power source. For the personal
safety of the operator, as well as for proper operation, you must ground the
system by plugging the power cord into a mating three-prong grounded
receptacle. The receptacle must be grounded in accordance with the
National Electric Code, as well as local codes and ordinances.
!
WARNING
Do
not cut the grounding prong from the plug. Y
ou must ground the system by
plugging the power cord into a mating three-prong grounded receptacle.
Attempting to use a receptacle or extension cord that does not accommodate a
three-conductor plug could result in death or serious injury to personnel and/or
damage to equipment.
The receptacle must be grounded in accordance with the National Electric
Code, as well as local codes and ordinances.
If
your site does not have a properly-wired wall receptacle, you must have
one installed by a qualified electrician. Any of the following conditions could
cause a safety hazard or result in a system malfunction.
•
Open safety ground
•
Safety ground connected to neutral conductor in the receptacle —
connect at service entrance only
•
Safety ground connected to conduit only
•
Hot and neutral connections reversed in the receptacle
NOTE:
Install an Uninterruptible Power Supply (UPS) to maintain
operational capability during abnormal power loss. Refer to
Appendix C
for
a description of a typical UPS application that includes cabling
instructions.
NOTE:
OSx requires a dedicated power source (free of use by other
equipment). This is particularly important if the other equipment uses large
amounts of power
, resulting in AC waveform distortion.
AC Power
Requirements
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