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2.4.2 General Installation Guide Lines for EU Installations.
•
Be aware that wiring leaving the cabinet where the MMI is installed may be
exposed to interference sources.
•
The installation practices in the individual product installation manuals of other
components in the system must also be followed.
•
Locally applicable grounding safety regulations and machinery directives should
be followed for providing a protective ground to earth. The EMC ground must be a
low impedance, low inductance path to the machine chassis ground.
•
The MMI power supply must be through an IEC-rated isolation transformer.
•
The Power supply to the PLC must be controlled to ensure that it does not
exceed overvoltage category II per EN60204-1 (IEC 240).
•
Other requirements of the Machinery Directive involving displays, languages,
instructions, Emergency Stop functions, machine operation, protective guards and
interlocks are the responsibility of the machine manufacturer.
2.4.3 General Safety Guide Lines for EU Installations.
•
Only qualified personnel should be allowed to specify, apply, install, operate,
maintain or perform any other function related to MMI products. Qualified persons
are defined as follows:
System application and design engineers who are familiar with the safety
concepts of automation equipment. Installation, start-up, and service personnel
who are trained to install and maintain automation equipment. Operating
personnel trained to operate automation equipment and trained on the specific
safety issues and requirements of the particular equipment.
•
Before switching on the equipment, make sure that the voltage range for the
equipment is correct.
•
Emergency tripping devices in accordance with EN60204/IEC204 must be
effective in all operating modes of the automation equipment. Resetting the emer-
gency off device must not result in any uncontrolled or undefined restart of the
equipment.
•
Automation equipment and its operating elements must be installed so that
unintentional operation is prevented.
•
Make sure that operating sequences interrupted by a voltage dip or power supply
failure resume proper operation when the power supply is restored. If necessary,
the equipment must be forced into the “emergency off” state.
•
Install the power supply and signal cables so that inductive and capacitive
interference voltages do not affect automation functions.
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