NORD Drivesystems BU0290 - Manual (Page 6)

PROFINET bus module for NORD frequency inverters SK 200E
6 Subject to technical amendments BU 0290 GB-4312
1 General
Modern field bus systems, microcontrollers and communication networks have had a great influence on
automation systems and have resulted in greater flexibility, availability and ultimately, also a reduction in
costs.
The widespread use of PC-based control only became possible with the availability of field bus systems.
With increasing control unit performance, the classic field bus ultimately became the limiting criterion for the
entire system. It was therefore an obvious step to adapt Ethernet technology, which provides high rates of
data transmission in IT applications, to the field of automation.
1.1 The bus system
As a physical transfer medium, PROFINET® transfers many years of experience with PROFIBUS-DP-V1 to
Fast Ethernet. In addition to the conventional open Ethernet communication TCP/IP it enables real time
communication of process data. PROFINET defines three communication classes, which provide different
levels of efficiency and functionality:

TCP/IP or UDP/IP communication without real time capability

Real time communication for process data (>1ms) RT

Isochronous real time communication for synchronised process data  IRT
Features of the SK TU4-PNT(-C)

PROFINET IO real time communication (RT=Real Time and IRT=Isochronous Real Time)

Automatic address assignment via the IO controller using DCP (discovery configuration protocol)

Switched Ethernet

Autonegotiation (negotiation of transfer parameters)

Autocrossover (Transmission and reception cables crossed over in the switch)

Conforms with Class B, C

PROFINET IO bus cable connection via RJ45 plug - connector

Connection of I/Os and system bus via screw terminals and optionally via M12 round connectors

Display of specific PROFINET IO status with 2 LEDs

Specific DEVICE or FI status display with 2 LEDs

Eight integrated 24V inputs and two 24V outputs

Available as a version in a separate housing (optionally IP55 / IP66)

An interface (RS232/RS485) via an integrated RJ12 socket is available for parameter access by
means of the manual control unit SK PAR-3H or via NORDCON software.
Performance

Electrically isolated bus interface 500V
eff

100Mbit/s data communication

Full duplex transmission

Transmission of a maximum of five setpoints or actual values to the frequency inverter

Cyclic parameterisation (PPO 1 + 2) or acyclic parameterisation (Records)

PROFINET Bus Gateway solution → up to 4 frequency inverters can be connected to a PROFINET
bus module

Almost unlimited participants in the PROFINET system possible (limited by the controller)