ABB TTF200 Operating Instruction

Also see for TTF200: Additional instructions Operating instructions

ABB TTF200 Operating Instruction Manual pdf 16 page image

16 TTF200 FIELD-MOUNT TEMPERATURE TRANSMITTER | OI/TTF200-EN REV. A6.3 Electrical connectionsDANGERImproper installation and commissioning of the devicecarries a risk of explosion.For use in potentially explosive atmospheres, observe theinformation in chapter ‘Use in potentially explosiveatmospheres according to ATEX and IECEx’ on page 6 !Observe the following information:— The electrical connection may only be made byauthorized specialist personnel and in accordance withthe electrical circuit diagrams.— The relevant regulations must be observed duringelectrical installation.— The electrical connection information in the manualmust be observed; otherwise, the type of electricalprotection may be adversely affected.— Safe isolation of electrical circuits which are dangerousif touched is only guaranteed if the connected devicessatisfy the requirements of DIN EN 61140(VDE 0140 Part 1) (basic requirements for safeisolation).— To ensure safe isolation, install supply lines so that theyare separate from electrical circuits which aredangerous if touched, or implement additional isolationmeasures for them.— Connections must only be established in a dead-voltagestate.— The transmitter has no switch-off elements. Therefore,overcurrent protective devices, lightning protection, orvoltage disconnection options must be provided at theplant.— The power supply and signal are routed in the same lineand must be implemented as a SELV or PELV circuit inaccordance with the relevant standard (standardversion). For the Ex version, the guidelines stipulated bythe Ex standard must to be adhered to.— You must check that the available supply powercorresponds to the information on the name plate.NOTICEThe signal cable wires must be provided with wire endsleeves.The slotted screws of the connection terminals aretightened with a size 1 screwdriver (3.5 or 4 mm).6.3.1 Protection of the transmitter from damagecaused by highly energetic electricalinterferencesThe transmitter has no switch-off elements. Therefore,overcurrent protective devices, lightning protection, orvoltage disconnection options must be provided at theplant.For the shielding and grounding of the device and theconnection cable, observe the chapter titled ‘Examples ofshielding / grounding’ on page 18 .NOTICEDamage to the temperature transmitter!Overvoltage, overcurrent and high-frequency interferencesignals on the supply connection as well as sensorconnection side of the device can damage the temperaturetransmitter.Fig. 15A Do not weld B No high-frequency interference signals /Switching operations of bulk consumers C No overvoltagescaused by lightning strikesOvercurrent and overvoltage can occur through for examplewelding operations, switching operations of large electricconsumers, or lightning in the vicinity of the transmitter,sensor, as well as connector cables.Temperature transmitters are sensitive devices on thesensor side as well. Long connector cables to the sensor canencourage damaging interference. This can already happenif temperature sensors are connected to the transmitterduring installation, but are not yet integrated into thesystem (no connection to the supply isolator / DCS)!B CM11115A