Ferrites; Harsh Enclosure Cable Openings - Mettler Toledo IND570 Manual Del Usuario

2.4.1.

Ferrites

In order to meet certain electrical noise emission limits and to protect the IND570 from external
influences, it is necessary to install a ferrite core on each cable connected to the terminal. There are
two ferrite cores included with the basic terminal and additional ferrites are supplied with each of
the options.
To install ferrites, simply route the cable through the center of the core and then take one wrap
around the outside of the core and route the cable through again. Either the complete cable or the
individual wires can be wrapped through the ferrite. This should be done as close to the enclosure
as possible. See Figure 2-18.
2.4.2.

Harsh Enclosure Cable Openings

Figure 2-19 and Table 2-1 show the uses of the glands and other openings on the rear of the harsh
enclosure.
2-12 METTLER TOLEDO IND570 Weighing Terminal Installation Manual
SPECIAL REQUIREMENTS APPLY TO THE TYPE OF CABLE THAT CAN BE USED IN AN IND570xx
WITH THE ATEX AND IECEX APPROVALS. THE CFMUS APPROVED VERSION MUST USE CONDUIT
FOR ALL INCENDIVE CONNECTIONS. REFER TO THE IND570xx DIVISION 2, ZONE 2/22
INSTALLATION MANUAL (30205321) FOR DETAILS.
Figure 2-18: Installing the Ferrite Cores
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Figure 2-19: Harsh Enclosure Cable Opening Assignments
WARNING
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30205319 | 04 | 08/2016