163 Product Description3.7.3.3 FN30 power supplyThe power supply unit FN30 can only be used to operate the F300K on an AC mains voltagewithin the scope of EN 60950 or UL 60950.The power supply is available in two versions:• For top-hat rail mounting• As a built-in unit in a housingWhen connecting the F300K to the FN30-00 power supply, not all wires of the connection ca-ble are connected to the power supply connections. Surplus wires must be connected to sep-arate terminals. These terminals are part of the housing.Technical data for this power supply unit can be found in section 14.1 Technical Data.3.7.4 Coupling relaysTo connect the contact outputs of the F300K to voltages higher than 42 V or voltages withoutprotective separation, you have to use coupling relays. These must met the protective sepa-ration requirements. See section 6.1.2 Electrical Safety – Requirements to Be Met by Third-party Manufacturers.In addition, you also require appropriate certification for the coupling relay with a safety con-tact output (flame signal) for the purpose for which it is to be used (e.g. to EN 298 and/or toEN 61508 with SIL III or SIL II).The LAMTEC FN20 and FN30-20 power supply has coupling relays for the flame signal.These meet EN 298 und EN 61508-2 SIL 2 requirements.If you want suitable coupling relays or have any questions, please contact our support staff atvertrieb@lamtec.de or on +49 (0) 6227 6052-33.3.7.5 Adjustable Holder, Cooling-air HousingsYou will find a complete overview of the holders and cooling-air housings for LAMTEC flamescanners in the document "Flame Monitoring Systems and Accessories" (DLT7673).Fig. 3-9 FN30-00 top-hat rail mounting Fig. 3-10 FN30-10 as a built-in unit
