7 Maintenance and cleaning .................................................................................................................. 75
8 Troubleshooting................................................................................................................................... 77
8.1 Resetting the device to default settings with the button (in the startup phase).................... 77
8.2 Resetting the device to default settings with the button (during operation)......................... 78
8.3 Load a rmware le via TFTP............................................................................................... 79
9 Technical specications ....................................................................................................................... 81
9.1 SCALANCE XRH334/XRM334 with 8 SFP/SFP+ slots ............................................................. 81
9.1.1 24 V AC/DC device version.................................................................................................. 81
9.1.2 100 to 240 VAC / 110 to 250 VDC device version ................................................................ 84
9.2 SCALANCE XRM334 with 12 SFP/SFP+ slots ........................................................................ 87
9.2.1 24 V AC/DC device version.................................................................................................. 87
9.2.2 100 to 240 VAC / 110 to 250 VDC device version ................................................................ 90
9.3 Mechanical stability (in operation) ..................................................................................... 93
9.4 Cable lengths..................................................................................................................... 94
9.5 Switching properties.......................................................................................................... 94
10 Dimension drawings............................................................................................................................ 97
10.1 Dimension drawings SCALANCE XRM-300 .......................................................................... 97
10.2 Mounting brackets for use on ships .................................................................................... 98
11 Approvals........................................................................................................................................... 101
Index .................................................................................................................................................. 109
Table of contents
SCALANCE XRH-300/XRM-300
Equipment Manual, 10/2022, C79000-G8976-C546-01 5