Eaton Ex-Lite N Operating Instructions Manual

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Contents

Eaton Ex-Lite N Operating Instructions Manual Manual pdf 12 page image

12Attention!Only fix laid cable may be used for connec-tion! If cable glands from other manufactur-er are used the instructions regarding strainrelief and clamping capacity must beobserved!Connect the conductors to the terminals L, Nand PE in accordance with the terminal marking(see fig. 3).Remount the LED-printed board into thehousing.Take care not to pinch any conductors.Take care not to pinch any conductors. Installthe protective cover with the four screws(Test torque 2.4 Nm).4.4 Changing of the legendTo install the correct legend open the 4 screws(fig. 4) together with the 2 brackets at the coverframe. Remove the old legend. Put the selectednew legend (fig. 5) onto the protective glaspanel. Fix the legend with the two brackets andscrews on the frame. Close the frame onto theenclosure.5 Function5.1 System modesLuminaires equipped with LED-lightsources areused normally as exit-luminaires due to the lightoutput of the LEDs. Therefore these lightfittings have to be operated continuously(Independent system mode).5.2 DisplayThe luminaire is fitted with a microcomputer forcharging and monitoring and with a displaycomposed of 7 light emitting diodes. The fivegreen LED’s indicate the battery’s charge stateand available capacity. The red LED signalspossible failures, the yellow LED signals theemergency operation (fig. 6).See also page 10: table of LED indicationstatus.5.3 ChargingThe microcomputer controlled charging systemmeasures the charging and discharging currentand transmits it to a capacity meter. Five greenlight emitting diodes indicate in 20%-steps theactual charge state of the battery, see fig. 7.The reduction in the battery capacity due toself-discharge in normal operation is auto-matically recharged controlled by the micro-processor.During the charging process the leadingflashing LED indicates the amount of capacitycharged so far. The LED’s for the capacityalready charged indicate continuously (fig. 7).The charging process is complete when all fivegreen LED’s are illuminated and none isflashing.3 Conformity with standardsThe luminaire is suitable for use in zone 1, 2, 21and 22 hazardous areas acc. toEN/IEC 60079-10-1 and EN/IEC 60079-10-2.The luminaire is conform to the standardsspecified in the EC-Declaration of conformity,enclosed separately.References to standards and directives in theseoperating instructions always relate to the latestversion. Other additions (e.g. details relating tothe year) shall be observed.4 InstallationThe respective national regulations aswell as the general rules of engineeringwhich apply to the installation and opera-tion of explosion protected apparatus willhave to be observed (IEC/EN 60079-14)!Transport and storage of the luminaire ispermitted in original packing and specifiedposition only!4.1 Opening and closing thelight fitting– Unscrew the four recessed head screws ofthe cover– Remove the protective cover4.2 Installation of the fittingThe luminaire shall be fitted by using the fourmounting clips with suitable fixing screws(Ø: 5 mm, fig. 1) onto a suitable surface.Warning:Hazard due to electrostatic charges!Luminaire must not be installed in thevicinity of charge-generating processes.4.3 Mains connectionThe electrical connection of the device mayonly be carried out by skilled staff(IEC/EN 60079-14).After opening the cover unscrew the twoscrews of the LED-printed board (fig.1).In the version Ex-Lite NLT four screws areunscrewed (fig. 1).Turn the printed board downwards using thetwo guided springs (fig. 2).Pass the cable through the certified Ex cableentry M 25 x 1,5. Use sealing inserts1,2 and 3 for cables from 8 to 10 mm Ø,sealing inserts 1 and 2 for cables from 10 to 13 mm Ø andsealing insert 1 for cables from 13.5 to 17.5 mm Ø.When closing the gland with a blanking plug,always use sealing inserts 1+2!In case of unused cable entries, remove theirprotective cover and close the entries with ablanking plug (torque of 3.0 Nm).When closing the gland with a blanking plug,always use both sealing inserts!When metal cable entries are used, theprotective caps of the unused entries are to beremoved and the entries to be closed withcertified Ex blanking plugs IP 66!GBExplosion protected LED-Emergency Exit LuminaireSeries: Ex-Lite N; Ex-Lite NLTThe LED display takes into account the declinein the capacity of the battery: i.e., if theindication does not go beyond the 3rd greenLED even after an extended charging period,the available capacity is between 40 and 60%.This indication is updated again on eachemergency lighting operation until the battery isshut down by the deep discharge protection forthe battery.At temperatures below -5 °C and above +35 °Cthe battery will not be fully charged forelectrochemical reasons.5.4 Ex-Lite NLT for low temperaturesThe Ex-Lite NLT version is equipped with extraheating and insulation. The heating alwaysfunctions if the supply voltage is applied.This way the ExLiteNLT battery module stayssufficiently loaded even in low temperatures(see technical data).5.5 Automatic function test5.5.1 Function test (FT)A function test (FT) is performed automatically.During this process the emergency luminaire isswitched to battery supply for approx. 5 min.and tested.5.5.2 Partial operating time test (TBT)Every 3 months a partial operating time test isperformed.If no emergency lighting operation> 30 min. has occurred during the last3 months. During this test emergency lightingoperation is performed for approx. 35 min.5.6 Emergency lighting operationEmergency lighting operation is automaticallyinitiated by the FT+TBT, by mains failure, ormanually by shutting down the mains supply.During this process the emergency luminairemarked in yellow is switched to batteryoperation.The residual capacity available is indicated bythe 5 green light emitting diodes, see figure 7.