KROHNE BM 70 M User Manual
Page 88
2
BM 70M-EEx/ BM 70Mi-EEx
Part 2: Documentation BM 70 M-EEx / BM 70 Mi-EEx
1
General safety information ....................................................................................................... 3
2
Safety relevant Type Code........................................................................................................ 3
3
Main safety-relevant characteristics........................................................................................ 4
3.1 Signal converter........................................................................................................................... 4
3.1.1
Category / Zone allocation....................................................................................................... 4
3.1.2
Types of ignition protection...................................................................................................... 4
3.1.3
Special lock ............................................................................................................................. 5
3.1.4
I/O functions ............................................................................................................................ 5
3.2 Flange systems............................................................................................................................ 5
3.2.1
Category / Zone allocation....................................................................................................... 5
3.3 Temperature classes, complete device ....................................................................................... 6
3.3.1
General .................................................................................................................................... 6
3.3.2
BM 70 M-EEx with flange system V96 or SA .......................................................................... 6
4
Identifying Marking.................................................................................................................... 8
4.1 Marking – Signal Converter ......................................................................................................... 8
4.1.1
Signal converter without intrinsically safe I/O function ............................................................ 8
4.1.2
Signal converter with intrinsically safe I/O functions ............................................................... 9
4.2 Marking of flange systems ........................................................................................................... 9
5
Assembly and installation ...................................................................................................... 10
5.1 Flange systems.......................................................................................................................... 10
5.1.1
Flange system V96 / SA (optionally with sensor connection) ............................................... 10
5.1.2
Flange system V96 with heating (optionally with sensor connection) ................................... 10
5.1.3
Flange system V96 / SA with purging system and/or sensor connection ............................. 10
5.1.4
Flange system V96 with heating and purging systems ......................................................... 10
5.2 Electrical connection BM 70 M-EEx .......................................................................................... 10
5.2.1
Terminal compartment........................................................................................................... 10
5.2.2
Connecting cables ................................................................................................................. 11
5.2.3
Connection of power and I/O functions ................................................................................. 11
5.2.4
Terminal assignment ............................................................................................................. 12
5.2.5
Terminal assignment - I/O functions...................................................................................... 12
6
Initial start-up ........................................................................................................................... 13
7
Operation.................................................................................................................................. 13
8
Preventive maintenance.......................................................................................................... 13
8.1 Signal Converter ........................................................................................................................ 13
8.2 Flange Systems ......................................................................................................................... 14
9
Dismantling .............................................................................................................................. 14
9.1 Replacement of Signal Converter.............................................................................................. 14
9.2 Replacement of complete device .............................................................................................. 15
10 Maintenance Service ............................................................................................................... 15
11 Approvals ................................................................................................................................. 16