2.3 Direct connection of PROFIBUS stations

Some PROFIBUS stations provide direct connection to the PROFIBUS cable. The connection methods used are similar to those for installing cable into connectors, for example, screw terminals or insulation displacement connection. However, the design of the connections differs greatly. Always use the manufacturer’s instructions if available. The following section provides only typical installation instructions.

The general steps are as follows:

1. Strip the PROFIBUS cable insulation; ensure that the stripped cable dimensions are applicable to the device.
   
               
   
   
2. Strip the insulation from the cores
   
   
   
   
3. Insert the cores in the contact openings according to the core assignment (A=green, B=red).
   
   
   
   
4. Using an appropriately sized screwdriver, screw the terminals to grip the stripped cable cores (observe the torque).
   
   
   
   
5. Ensure that a good connection is made between the cable shield and the device shield connection. Ensure that there is no contact between the shielding and the cores.
   
   
   
   
6. Fasten the strain relief.
   
   
   
   
7. Close the PROFIBUS station.
   
   
   

The direct connection of the PROFIBUS cable to a PROFIBUS station using the insulation displacement method is similar to the connection of a PROFIBUS station with screw terminals. However, the individual cores should not be stripped of insulation with the insulation displacement method of connection.