Siemens SIMATIC NET PROFIBUS Provozní pokyny stáhnout pdf (Strana 453)

100

101

Installation and Startup

5-3

PROFIBUS Optical Bus Terminal (OBT)

C79000-G8976-C122-02

5.2 Installation

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.

S Select the installation location so that the climatic limit values listed in the

technical specifications can be adhered to.

S Make sure there is enough space for connecting the bus and power supply

cables.

S Install 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

S Fit 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.

S The module is removed by pulling down the locking bar.

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

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