Chapter 3 – Installation
Hardy H6800 Series Application Controllers User Guide
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To ensure that visible damages or faults can be recognized, inspect the HI6800 Series
Application Controller at least once during a shift. Any changes in the operating
performance must be reported immediately to the responsible authorities/persons. If
necessary, stop and secure the HI6800 Series Application Controller until the reported
issues are resolved.
•
If a malfunction occurs, stop and secure the HI6800 Series Application Controller
immediately, and have the fault eliminated immediately.
3.1.6 Electrostatic Discharge
Electrostatic discharge (ESD) can harm the electronic components of the HI6800 Series
Application Controller.
ESD is created when the electrical field surrounding different objects varies and becomes
imbalanced. The spark that is created when contact balances the fields can damage the
HI6800 Series Application Controller.
To minimize possible ESD-induced failures at the installation location:
•
Make sure all equipment and flooring are grounded. Any charge that might build up would
be discharged safely through that common ground.
•
Maintain recommended humidity level and airflow rates. Relative humidity above 40%
reduces the resistance of items that can generate a charge, making it more difficult to
generate an ESD.
•
Store spare electric parts in antistatic bags until the parts are ready to be installed. These
bags are designed to prevent a charge from building.
•
When handling the HI6800 Series Application Controller, wear protective devices like wrist
straps, sole grounders, and conductive shoes. These items help to prevent electrostatic
charge from building.
3.1.6.1 Sources of Electrical Interference
Make sure that the HI6800 Series Application Controller is protected from sources of
electrical interference. The following table provides examples of electrical interference.
Potential Source
Description
Wall outlets
Power outlets for building maintenance and janitorial equipment, such as vacuum cleaners and
floor buffers, must be wired from circuit breakers on a power panel separate from the computer
system panel. The ground wires from these outlets must connect to the normal building
distribution panel and not to the system ground. If a separate power source and separate
ground are not provided, maintenance and janitorial equipment can induce electrical noise that
can affect operation of the HI6800 Series Application Controller. An electrician can verify
whether maintenance outlets are on separate panels.
