NORD Drivesystems BU0020 - Manual (Page 11)

1 Introduction
BU 0020 GB-2612 11
1. Introduction
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1.1 General
This PROFIBUS DP documentation is valid for the NORD series trio SK 300E, SK 500E, SK 700E,
SK 750E. For discontinued device series (e.g. vector mc) which are no longer supplies, the technical
documentation for the Profibus description is available on request (older version of BU0020).
The respective basic devices are delivered with a blank cover for the technology unit slot. The basic
models do not have any components for parameterisation and control.
In order to set up communication with Profibus DP, either a Profibus customer unit or a Profibus
technology unit (according to the particular device series) must be installed and connected.
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1.2 The bus system
Profibus allows the exchange of data between a wide range of automation devices. PLC's, PC's,
operating and monitoring devices can all communicate via a uniform bus in serial bit mode.
PROFIBUS DP is primarily used for communication between sensor and actuator where system
response needs to be very fast. PROFIBUS is used where the time for rapid and complex
communication between the individual devices is critical. PROFIBUS DP is a suitable alternative to
expensive 24-volt parallel signal transmission and transmission of measured values. This type of
PROFIBUS, which is optimised to speed, is used for instance for operating frequency inverters on
automation devices.
PROFIBUS communication is specified in the international standards IEC 61158 and IEC 61784.
Application and planning aspects are specified and documented in the guidelines of the PROFIBUS
users´ organisation (PNO). This ensures intercommunication between devices from different
manufacturers. Data exchange is specified in DIN 19245 Part 1 and 2 and application-specific
upgrades in Part 3 of this standard. Within the European field bus standardisation process,
PROFIBUS is integrated into the European field bus standard EN 50170.
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1.3 PROFIBUS DP with NORD frequency inverters
Features:
• Electrically isolated bus interface
• Standard transfer rate up to 1.5Mbit/s - according to version (with 24V supply) up to 12 MBit/s
• RS485 transfer
• Simple connection to the inverter via a 9-pin sub-D connector, M12 round plug connector, screw
terminals (technology unit) or spring terminals (customer unit)
• Status indication with 2 LEDs (technology unit)
• Easy programming of all frequency inverter parameters
• Frequency inverter control via Profibus connection
• Transfer of setpoint positions with SK 2xxE/ 530E/ 700E/ 750E with PosiCon option
• Basic Profibus functionality as per DP-V0 for all frequency inverter series
• Transfer of the actual frequency inverter status during operation
• Up to 126 frequency inverters on a single bus
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