Parker PAC, Installation Manual, Page: 21 / 197

Important: Mount the Controller and PACIO Modules in a suitable tool
accessed, fire enclosure to comply with requirements set forth by
CE Safety directives.
Important: A Limited Power Source (LPS) power supply or circuit according
to IEC 60950-1, or an NEC Class 2 power source must be used to
provide power to the PAC. NEC Class 2 circuits are considered to
be safe from a fire ignition standpoint and provide acceptable
protection against electric shock.

Consider power interruptions or brownouts when developing the I/O program to ensure that a
defined state at restart excludes all dangerous conditions.

Incorporate emergency disconnect circuits to ensure safe and effective machine shutoff.

Comply with local and national safety regulations and precautions for the installation.

Control elements are to be installed in such a way as to exclude unintended operation.

Route control and communication cables in a manner that reduces EMI interference (inductive or
capacitive) which would disturb system operation or functionality. For example, do not run
communication and low-voltage cables in the same raceways with power lines, motor leads, or
similar.

Always attach or remove PACIO Modules in a powered-down state. Damage to the modules or
unintended I/O functionality might occur.