NORD Drivesystems BU0590 User Manual

Page 13

3 Commissioning

BU 0590 GB-0312

Subject to technical amendments

3 Commissioning

3.1 Cabling

3.1.1

Topology

The SK TU3-PNT PROFINET IO modules can be connected to each other in star, tree, linear or ring
topologies.

Fig. 5: Example of PROFINET IO linear topology

Fig. 6: Example of PROFINET IO star topology with switch

3.1.2

EMC

If EMC measures are not in place, high-frequency interference which is mainly caused by switching
processes or lightning often causes electronic components in the bus participants to be faulty and error-free
operation can no longer be ensured.
Correct laying of the bus cable dampens the electrical influences which may occur in an industrial
environment. The following points must be observed:

 Implement long connections between bus participants by the shortest possible distances.
 Only use plugs with a metal housing.
 For the production of bus cables lay the shielding on as wide an area of the plug as possible.
 With the parallel installation of bus cables, a minimum distance of 20 cm from should be maintained from

other cables carrying a voltage greater than 60V. In particular, this must be observed for cables to
motors or chopper resistors. This applies to lines laid both inside and outside of control cabinets.

 The minimum distances for parallel installation may be reduced by shielding cables carrying voltage or

by means of earthed metal dividers in the cable ducts.

 Connect SK TU3- Ethernet module to the PE (Connection via the plug pin next to the 24V supply).

PROFINET
IO Controller

TU3-PNT

PROFINET
IO Controller

Switch

TU3-PNT