6
This section summarizes the precautions on conformance to the EMC Directive of the cabinet con-
structed using this instrument.
However, the method of conformance to the EMC Directive and the judgment on whether or not the cabinet con-
forms to the EMC Directive has to be determined finally by the manufacturer.
1. EMC Standards
The standards applicable to the EMC Directive ( No.89/336/EEC ) are listed below.
(1) Radiated radio frequency emission ----------------------------------- EN61000-6-4/2001
(2) Radiated radio frequency electromagnetic field immunity ------EN61000-6-2/2001
2. Installation (EMC directive)
The instrument is to be mounted on panel of a cabinet.
Therefore, the construction of a cabinet is important not only for safety but also for EMC.
The instrument is examined by the following conditions.
●
Conductive cabinet is used.
●
Six faces of a cabinet have to be ensured conductivity for each other.
●
A cabinet has to be connected to earth by a thick wire of low impedance.
●
Holes on faces of cabinet have to be 10 cm or less in diameter.
●
The terminals for protective earth and functional earth have to be connected to earth by a thick wire of low
impedance. (A terminal for protective earth is important not only for safety but also for EMC.)
●
All connections must be kept inside the cabinet.
●
Wirings outside the cabinet have to be used with the shielded cable.
The following diagram shows how to provide good contact of the shielded cable.
Remove part of the outer cover.
Remove part of the paint musk on the cabinet.
Connect those parts with the clamp.
Protective earth: Maintains the safety of the instrument and improves the noise resistance.
Functional earth: Improves the noise resistance.
Shield section
Paint mask
Shielded cable
Screw
Clamp fitting
EMC Directive Instruction
FG
Содержание ME96NSR
Страница 56: ...56 Installation 1 Dimensions Optional Plug in Module 75 8 61 3 46 8 81 2 25 2 17 1 88 8 ...
Страница 69: ...69 ...