20 European Union CE Mark
Trident Planning and Installation Guide
European Union CE Mark
The CE Mark ensures electrical safety and the electro-magnetic compatibility
(EMC) of the controller with other electrical/electronic equipment. When properly
installed, the controller is certified to fulfill the requirements of the European
Union EMC Directive No. 89/336/EEC and Low Voltage Equipment Directive No.
72/23/EEC, as defined by the following documents.
For a copy of the EU Declaration of Conformity, see Appendix G, “EU Declaration
of Conformity.”
To ensure maximum reliability and trouble-free operation, install all field wiring in
accordance with best industry practices. For examples, see the EEE Standard
518-1982, IEEE Guide for the Installation of Electrical Equipment to Minimize
Electrical Noise Inputs to Controllers from External Sources, which gives
particular attention to all low-level analog signals, such as thermocouple or RTD
inputs.
Notes To comply with the CE Mark requirement for emissions, the Main
Processor Modules and the Communication Modules must be mounted in a metal
enclosure.
Field and logic power supplies must be approved for use in safety extra-low-
voltage (SELV) circuits according to the requirements of IEC 61010-1.
Standard Number Title
IEC 61131-2:1994/A11:1996 Programmable Controllers Part 2: Equipment
Requirements and Test. Overvoltage Category II is
assumed.
EN 50081-2:1993 Emission Standards for Industrial Environments
IEC 61010-1 Safety Requirements for Electrical Equipment for
Measurement, Control, and Laboratory Equipment,
Part 1: General Requirements
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