13Publication 1769-UM020A-EN-P - December 2009 13
Chapter
2
Installation and Wiring
Introduction
General Considerations
The Compact I/O system is suitable for use in an industrial
environment when installed in accordance with these instructions.
Specifically, this equipment is intended for use in clean, dry
environments (Pollution degree 2
(1)
) and to circuits not exceeding
Over Voltage Category II
(2)
(IEC 60664-1).
(3)
Topic Page
General Considerations 13
Assemble the Compact I/O System 16
Mounting the Module 17
Replace a Single Module Within a System 19
Grounding the Module 20
System Wiring Guidelines 21
Label the Terminals 23
Remove the Finger-safe Terminal Block 23
Wire the Finger-safe Terminal Block 24
Wire the Modules 25
(1) Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except that
occasionally a temporary conductivity caused by condensation shall be expected.
(2) Over Voltage Category II is the load level section of the electrical distribution system. At this level, transient
voltages are controlled and do not exceed the impulse voltage capability of the product’s insulation.
(3) Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC)
designations.
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