NFS Supra
Page 23
HLS-MN-025 v.04
Installation and Operating Manual
www.honeywelllifesafety.es
www.hoeywelllifesafety.es
4.2 EMC Considerations
Following the above instructions and by using suitable cables EMC
problems will be avoided. In particularly difficult EMC environments,
or where non-preferred cable is used, it is possible to fit additional
ferrite suppressors (sleeves) to cables entering the control panel.
4.2.1 Screen Termination
Cables should be screened or metal coated and the screens must be
earthed within the enclosure.
Multiple earthing of cable screens must be avoided. Six earthing points are
provided for this purpose on the underside of the mounting plate to cover
all the cable entry points.
Use insulation sleeving on the tails between the cable entry position and
the earth post. Run the tails close to the rear wall of the back box.
4.2.2 Ferrite Sleeves (Optional)
In difficult EMC environments, or where non-preferred cables are used,
optional ferrite sleeves should be fitted to all the wiring entries.
The ferrite sleeves (A) are to be fitted over the conductor(s) of each cable
and as close as possible to the entry point of the cable.
The sleeve should be held in place using a cable tie (not supplied).
If more ferrite sleeves are required, please contact your supplier.
Installation
