FISCHER FT90, Operating Manual

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FISCHER Mess- und Regeltechnik GmbH Table of contents
BA_EN_FT90 iii/108
Table of contents
1 Safety instructions .......................................................................................................... 6
1.1 General................................................................................................................................... 6
1.2 Personnel Qualification........................................................................................................... 6
1.3 Personnel Qualification........................................................................................................... 6
1.4 Risks due to Non-Observance of Safety Instructions ............................................................. 6
1.5 Safety Instructions for the Operating Company and the Operator ......................................... 6
1.6 Safety Instructions for the Operating Company and the Operator ......................................... 7
1.7 Unauthorised Modification ...................................................................................................... 7
1.8 Inadmissible Modes of Operation ........................................................................................... 7
1.9 Safe working practices for maintenance and installation work ............................................... 7
1.10 Pictogram explanation ............................................................................................................ 8
2 Product and functional description ............................................................................... 9
2.1 Delivery scope ........................................................................................................................ 9
2.2 Intended use........................................................................................................................... 9
2.2.1 Explosion hazard area classification.......................................................................................... 9
2.3 Function diagram.................................................................................................................... 10
2.4 Design and mode of operation ............................................................................................... 10
2.5 Device versions ...................................................................................................................... 11
2.5.1 Process connection.................................................................................................................... 11
2.5.2 Electrical connection .................................................................................................................. 11
2.5.3 ATEX model............................................................................................................................... 12
2.5.4 Type plate .................................................................................................................................. 12
3 Assembly.......................................................................................................................... 14
3.1 General................................................................................................................................... 14
3.2 Mounting in explosive areas ................................................................................................... 14
3.3 Process connection ................................................................................................................ 15
3.3.1 Replacement plates ................................................................................................................... 15
3.3.2 Cutting ring screw connections .................................................................................................. 16
3.4 Electrical connections............................................................................................................. 17
3.4.1 Operation in areas at risk of explosion....................................................................................... 17
3.4.2 Devices only with switch outputs ............................................................................................... 18
3.4.2.1 Circuit ......................................................................................................................................... 18
3.4.2.2 M12 connector 1: auxiliary energy and analogue output............................................................ 19
3.4.2.3 M12 connector 2: switch outputs ................................................................................................ 19
3.4.2.4 M12 connector 3: Sensor input................................................................................................... 19
3.4.3 Devices with switching and analog outputs ............................................................................... 20
3.4.3.1 Circuit ......................................................................................................................................... 20
3.4.3.2 M12 connector 1: auxiliary energy and analogue output............................................................ 21
3.4.3.3 M12 connector 2: switch outputs ................................................................................................ 21
3.4.3.4 M12 connector 3: Sensor input................................................................................................... 21
3.4.4 Device with Modbus................................................................................................................... 22
3.4.4.1 Connection to an existing Modbus RTU network ....................................................................... 22
3.4.4.2 Auxiliary energy supply............................................................................................................... 23
3.4.4.3 M12 plug 1: Modbus IN .............................................................................................................. 24
3.4.4.4 M12 plug 2: Modbus OUT .......................................................................................................... 24
3.4.4.5 M12 connector 3: Sensor input................................................................................................... 24