Siemens SIMATIC NET PROFIBUS manual Installation, Installing the Profibus OBT

Installation and Startup

5.2Installation

Installing the PROFIBUS OBT

PROFIBUS OBT can be installed either on a 35 mm standard rail with a height of 15 mm in compliance with DIN EN 50 022 – 35 x 15 or directly on a level surface.

SSelect the installation location so that the climatic limit values listed in the technical specifications can be adhered to.

SMake sure there is enough space for connecting the bus and power supply cables.

SInstall the modules only on a low-resistance and low-inductance grounded standard rail or mounting plate. If you secure the modules on a mounting plate, make sure that as short a cable as possible leads from the ground terminal of the OBT to the nearest possible ground point.

Installation on a Standard rail

SFit the upper catch of the module onto the standard rail and push in the lower part of the module as shown in Figure 5-1 until it audibly clicks into position.

SThe module is removed by pulling down the locking bar.

Figure 5-1 Installation of a Module on a Standard Rail

PROFIBUS Optical Bus Terminal (OBT)	5-3
C79000-G8976-C122-02