
Table of contents
1 Introduction...................................................................................................................................................5
2 Safety notices .............................................................................................................................................11
3 Recommendations on network security......................................................................................................13
4 Device description ......................................................................................................................................17
4.1 Product overview....................................................................................................................17
4.2 Product properties and device views .....................................................................................21
4.3 LED display ............................................................................................................................22
4.4 SET/SELECT button ..............................................................................................................26
4.5 C-PLUG..................................................................................................................................27
4.5.1 Area of application and function of the C-PLUG ....................................................................27
4.5.2 Removal and insertion of the C-PLUG (rack devices) ...........................................................28
5 Mounting.....................................................................................................................................................29
5.1 Safety notices for installation .................................................................................................29
5.2 Installation ..............................................................................................................................31
5.3 19" rack mounting ..................................................................................................................31
5.4 Installation of modular devices...............................................................................................36
5.4.1 Installation and removal of media modules............................................................................36
5.4.2 SFP installation in SFP media module...................................................................................40
6 Connecting up ............................................................................................................................................43
6.1 Safety when connecting up ....................................................................................................43
6.2 Notes on commissioning ........................................................................................................43
6.3 Wiring rules ............................................................................................................................44
6.4 Connecting functional ground ................................................................................................45
6.5 Signaling contact....................................................................................................................46
6.6 Diagnostics port .....................................................................................................................47
6.7 Power supply..........................................................................................................................49
6.7.1 Connecting devices with 24 VDC power supply.....................................................................49
6.7.2 Connecting devices with 100 to 240 VAC power supply........................................................52
6.7.2.1 Overview ................................................................................................................................53
6.7.2.2 Fitting the connector for 100 to 240 V AC ..............................................................................54
6.7.2.3 Connecting the 100 to 240 V AC power supply .....................................................................55
7 Technical specifications..............................................................................................................................57
7.1 Construction, installation and environmental conditions ........................................................57
7.2 Connectors and electrical data...............................................................................................59
SCALANCE XR-300M
Compact Operating Instructions, 11/2019, A5E02661171-15 3