User Manual F012-P
Page 26 FW_F012-P_M_v0501-01_EN
Connecting Protective Earth to a non-metallic enclosure
When the F012-P is supplied with a non-metal enclosure (e.g. plastic), the field mount enclosure
meets the requirements of class 2 (double insulated). Therefore any incoming PE conductor can be
terminated with an insulating end cap.
When the F012-P is panel mounted, the installation class and protective earth requirements depend
on the panel or type of cabinet.
Connecting Protective Earth to a metal enclosure
When the F012-P is supplied with a metal enclosure (aluminum or stainless steel), the enclosure
must be grounded in accordance with national and local electrical codes.
To ground the field mounted unit, the PE conductor must be connected to the PE stud which is
located in the metal back cover, as indicated in the image below. To connect the conductor, a screw
(M4 x 6mm) with a serrated washer, a terminal and a washer is used (torque: 2 Nm). The metal front
cover is connected to the Protective Earth by the mounting screws with serrated washers.
To ground the panel mounted unit, the PE conductor must be connected to the metal front cover
through one of the four mounting screws. For this purpose, an additional nut, terminal and washer is
supplied.
Serrated washer ensures PE
connection.
Field mount Panel mount (back side) Front cover.
Fig.13: Protective Earth (PE) connections on metal enclosure
6.4.3 FIELD WIRING CONNECTIONS
● Do ground the aluminum / stainless steel enclosure properly with a PE wire as indicated to the
Protective Earth terminal. It is the responsibility of the installer to install, connect and test the
Protective Earth connections in accordance with the local and (inter)national Rules and
Regulations.
● When a power supply is connected to the field wiring connections, please also consider the
demands for power supply wiring shown in Section 6.4.4: Power supply[»27].
● The installation must comply with (inter)national requirements and local ordinances.
○ Within the Europe Union and the UK, all installations must comply with national regulations.
○ Within Canada all field wiring must conform to Section 18-156 of the Canadian Electrical
Code for installations within Canada.
○ Within the United States all field wiring must conform to the National Electric Code, NFPA
70, Article 501-4(b).
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