Leuze electronic MLC 500 Series, Safe Implementation And Operation

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Table of contents
Leuze electronic MLC 520S 3
Table of contents
1 About this document ............................................................................................ 5
1.1 Used symbols and signal words ............................................................................................. 5
1.2 Checklists................................................................................................................................ 6
2 Safety ..................................................................................................................... 7
2.1 Intended use and foreseeable misuse .................................................................................... 7
2.1.1 Intended use........................................................................................................................ 7
2.1.2 Foreseeable misuse ............................................................................................................ 8
2.2 Necessary competencies........................................................................................................ 8
2.3 Responsibility for safety .......................................................................................................... 9
2.4 Disclaimer ............................................................................................................................... 9
3 Device description .............................................................................................. 10
3.1 Device overview of the MLC family....................................................................................... 10
3.2 Connection technology ......................................................................................................... 10
3.3 Cascading ............................................................................................................................. 11
3.4 Display elements .................................................................................................................. 12
3.4.1 Operation indicators on the MLC 520S transmitter/receiver ............................................. 12
4 Functions............................................................................................................. 14
4.1 Start/restart interlock RES .................................................................................................... 14
4.2 EDM contactor monitoring .................................................................................................... 15
5 Applications ........................................................................................................ 16
5.1 Point of operation guarding................................................................................................... 16
6 Mounting.............................................................................................................. 17
6.1 Arrangement of transmitter and receiver .............................................................................. 17
6.1.1 Calculation of safety distance S ........................................................................................ 17
6.1.2 Calculation of safety distance if protective fields act orthogonally to the approach direction.. 18
6.1.3 Minimum distance to reflective surfaces ........................................................................... 21
6.1.4 Preventing mutual interference between adjacent devices ............................................... 22
6.2 Mounting the safety sensor................................................................................................... 23
6.2.1 Suitable mounting locations .............................................................................................. 23
6.2.2 Mounting with O-shaped mounting brackets ..................................................................... 24
6.2.3 Mounting with C-shaped mounting brackets ..................................................................... 25
6.2.4 Mounting with L-shaped mounting brackets ...................................................................... 27
6.2.5 Mounting with L- and C-shaped mounting brackets .......................................................... 29
6.3 Mounting accessories ........................................................................................................... 30
6.3.1 Deflecting mirror for multiple-side guarding....................................................................... 30
6.3.2 Mounting cascading .......................................................................................................... 30
7 Electrical connection.......................................................................................... 33
7.1 Pin assignment transmitter and receiver .............................................................................. 33
7.1.1 MLC 520S transmitter ....................................................................................................... 33
7.1.2 MLC 520S receiver............................................................................................................ 34
8 Starting up the device ........................................................................................ 35
8.1 Switching on ......................................................................................................................... 35
8.2 Aligning the sensor ............................................................................................................... 35
8.3 Minimum distance for cascade system ................................................................................. 37
8.4 Selection of RESTART mode and operation ........................................................................ 37
8.5 Unlocking start/restart interlock ............................................................................................ 39