Siemens ESM - Manual (Page 68)

Installation, Commissioning, Cleaning and Maintenance
Industrial Ethernet OSM/ESM
64 C79000-Z8976-C068-10
5.2 Installation
OSMs/ESMs can be installed in several ways:
• Installation on a 35 mm standard rail
• Installation on a SIMATIC S7-300 rail
• Installation in pairs in a 19" cubicle
• Wall mounted
Note
Remember that the OSM/ESM must only be installed horizontally (ventilation slits
top/bottom see Figure 25). To ensure adequate convection, there must be a
clearance of at least 5 cm above and below the ventilation slits. You should also
make sure that the permitted ambient temperature is not exceeded.
Preparations
1. Before installing, check whether the switch setting of the DIP switches is correct
for your application. (see Section 4.2.4.1)
2. Remove the terminal block for power supply and signaling contact from the
OSM and wire up the power supply and signal lines as described in Section
4.1.7.
3. Only for OSMs/ESMs with digital inputs:
When necessary, remove the terminal blocks for the digital inputs from the
OSM/ESM and wire the input signals as described in Section 4.1.8.