Bartec DTL III Ex Operating Manual
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11-8865-7D0001_A-03/2019-288307DTL III Ex Type 17-8865-4.22/2200 3000 Operating manual4.2. Installation The device must be connected in accordance with the wiring diagram with due consideration tothe current/voltage specifications. It is essential to observe the specifications on the type label. If the resistance thermometer that is connected to the device is brought into Dust Ex areas, it mustbe ensured that it has the appropriate approval. In principle, the resistance thermometer must be mechanically and temperature-stably attached to thepoint to be measured in order to ensure reliable thermal coupling. This should be carried out by usingtemperature-resistant aluminium adhesive tape or similar materials. All output circuits connected to the device must be protected by suitable over current protectiondevices (e.g. CB).4.3. CommissioningThe device may only be operated in a clean and undamaged condition. In case of visible damage, the devicemust be deactivated and appropriate repair actions initiated.Commissioning must be carried out in the following steps: Connect the device to electric power Set the limiter alarm setpoint and the pre-alarm setpoint that suits the application. Set the access password for the system parameters (incl. the setpoint for the limiter alarm). If required, set the password for resetting the limiter alarms Note: When controlling Ex heating circuits, the access password for the setpoint limit alarm and thepassword for resetting limiter alarms must be set, since the setting of the DTL III Ex in accordance withEN 60079-7 or EN 60079-30-1 must be “secured” and “sealed” for interaction with explosion-protectedheating circuits.With the DTL III Ex, this is achieved by using separate passwords for- Resetting limiter alarms- Setting the set point Limiter alarm4. Assembly, installation and commissioning3. Safety instructions Before commissioning, please check themarking on the DTL III Ex for suitability forthe intended use. For electrical systems, the relevant installationand operating regulations as well as otherrelevant national regulations must be observed. The operator of an electrical system in ahazardous environment must keep theequipment in good condition, operate andmonitor it properly and do maintenance andrepairs. All generally valid statutory rules and the otherbinding directives on safety at work, accidentprevention and the protection of theenvironment must be adhered to. When using the DTL III Ex to monitor thetemperatures of the heating and heatingcircuits in hazardous areas, the followingpoints must be observed:- The factory setting of the limiter alarmsetpoint is 190 °C (in TemperatureClass T3). If the application requires anotherlimit value, this must be set.- The limiter alarm setpoint setting must beprotected by a password that is accessibleonly to authorised people. The factorysetting of the PAS.2 password (“OFF“) mustbe altered.- The resetting of limiter alarms can beprotected by a password, whereby thefactory setting of the PAS.1 password(“OFF“) must be changed.- The remote reset use (e.g. by using akey switch) may only be made possibleto authorised people.- During commissioning a test of correctfunctioning must be conducted inaccordance with EN 60079-30-2.- The functionality of the DTL III Ex mustbe checked in accordance with thespecified test intervals of the IndustrialSafety Regulation.4.1. AssemblyThe details on the type label and in the EC Type Examination Certificate must be observed. The controlleris fitted into a DIN enclosure with 4 HP (horizontal pitch). The device can be latched onto a mounting rail inany mounting position in a row.In principle, it must be ensured that the device is properly ventilated to ensure that the specified operatingtemperature limits are not exceeded. Avoid use in areas with additional heat sources so that the permissibleambient temperature of the limiter is not exceeded.The device must be installed as far away as possible from sources that could cause strong electromagneticinterference (e.g. from motors).When connecting stranded or fine-stranded conductors, the conductor ends must be adequately prepared.Assembly instructions for assigning the connection terminalsConductor Min. Max. Minimum lengthcross-section cross-section wire end ferrulerigid 0.2 mm² 2.5 mm²with wire end ferrule 0.25 mm² 2.5 mm² 10 mm2 conductors rigid 0.2 mm² 0.75 mm²2 conductors withnon-insulated wire end ferrule 0.2 mm² 0.75 mm² 10 mm2 conductors withTWIN wire end ferrule 0.5 mm² 1.5 mm² 10 mmEN 5/12 |
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