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Danfoss VLT Drives
Operating Instructions Profibus DP V

Operating Instructions Profibus DP V

Product catalog summary

Introduction
This document provides operating instructions for Danfoss products FCM 300, FCD 300, and VLT 2800 with Profibus DP V1 communication. It includes proprietary information from Danfoss A/S and is intended for use with Danfoss equipment or compatible systems. The manual is protected by copyright laws, and Danfoss disclaims liability for any damages arising from its use.

Quick Start
The quick start section outlines the basic setup for Profibus communication, including parameter settings for frequency converters. Key parameters include the informative data telegram (PPO) setup, station address configuration, and control word/status word selection. The baud rate is automatically adjusted by the devices.

Profibus DP
Profibus DP is a fieldbus standard for fast cyclical communication between a master (e.g., PLC or PC) and slave devices (e.g., frequency converters). It supports features like cyclical data exchange, freeze and synchronize functions, and fixed data structures. The system layout section describes the master-controlled frequency converters and bus topology.

Profibus DP V1
DP V1 extends DP V0 by adding acyclical communication capabilities, allowing both cyclical and acyclical data exchange. Master type 1 (e.g., PLC) and master type 2 (e.g., PC tool) connections are supported, with acyclical connections being dynamically established or removed.

System Layout
The system layout section explains the integration of frequency converters with a master device, detailing the communication process and the role of the master and slave devices. It highlights the importance of adhering to the Profibus standard and the specific requirements for frequency converters.

Features of DP
DP is used for remote peripheral I/O communication, supporting fast cyclical process control. It is suitable for single master operations with a limited number of slave stations, optimizing for speed and efficiency in data exchange.

Data Exchange Principle
The principle of data exchange by Profibus DP V0/DP V1 involves cyclical updates of process data followed by acyclical messages. The document explains the roles of Master Class 1 and Master Class 2 in managing these exchanges.

Profibus Interface
The Profibus interface section provides detailed instructions on cable connections for FCM 300, FCD 300, and VLT 2800, ensuring proper setup for communication.

Parameters and Warnings
The manual includes a comprehensive list of parameters, warnings, and alarm messages, providing guidance on addressing potential issues and optimizing system performance.

Glossary and Index
A glossary and index are provided for quick reference to terms and topics covered in the manual.

Specifications
The document outlines the communication capabilities of the FCM 300, FCD 300, and VLT 2800 with PROFIBUS. The minimum communication time is approximately 100 milliseconds per slave at 3 Mbaud with DP communication using 4 bytes of data. Internal update times vary based on data type, with control word and main reference updates taking a maximum of 26 milliseconds for FCD 300/VLT 2800 and 65 milliseconds for FCM 300.

Procedures
For optimal operation, the PROFIBUS network requires proper cable connections and grounding. The document specifies the need for a low impedance ground connection and recommends using a galvanically isolated bus driver with overvoltage protection. It also emphasizes maintaining a distance of 200 mm between PROFIBUS cables and motor or brake resistor cables to prevent high-frequency noise interference.

Norms and Recommendations
The document provides guidelines for cable specifications, including impedance, resistance, capacity, and damping. It recommends using the same cable type throughout the network to avoid impedance mismatches. Proper termination of the bus line is crucial to prevent data transmission errors.

Key Data from Tables
The document includes tables detailing maximum drop cable lengths and total bus cable lengths based on transmission speed. For example, at 9.6-187.5 kBaud, the maximum cable length for one segment is 1000 meters, while at 3-12 MBaud, it is 100 meters.

LED Indicators
Each device (FCM 300, FCD 300, VLT 2800) has LEDs indicating communication status. LED303/LD851 lights up when the card is initialized, and LED304/LD852 indicates active communication, with brightness affected by baudrate.

Physical Connection and EMC Precautions
The PROFIBUS is connected via specific terminals, and EMC precautions are necessary for interference-free operation. The document advises on proper grounding and cable screen connections to ensure network stability.

PPO Description
The Parameter-Process Data Object (PPO) is a communication object in the PROFIBUS Profile for frequency converters, designed for fast cyclical data transfer. It can carry both process data and parameters. The PPO consists of a parameter part for reading/updating parameters and a process data part with a fixed (4 bytes) and a parametrable part (8 or 16 bytes). The fixed part transfers control word and speed reference to the frequency converter, while status word and actual output frequency feedback are transferred from it.

PCA Handling
The PCA portion of PPO types 1, 2, and 5 manages tasks such as controlling and supervising parameters. Requests and responses follow a handshake procedure, with a maximum data value of 4 bytes. The PCA word includes RC (Request/Response Characteristics), SPM (Toggle-Bit for Spontaneous Messages), and PNU (Parameter Number).

Request/Response Handling
The RC portion defines requests from the master to the slave and the involvement of other PCV portions. The PVA portion transmits parameter values, and the IND carries array subindexes. If a request is rejected, the RC word indicates this with a value of 7, and the fault number is carried by the PVA element.

Parameter and Data Type Structure
Parameters have attributes like size index and conversion index. Various units and conversion factors are listed, such as time, energy, power, rotation, torque, temperature, voltage, current, resistance, ratio, and frequency.

Data Types Supported
The FCM 300, FCD 300, and VLT 2800 support data types like Integer 16, Unsigned 8/16/32, Byte string, Time difference, Standardized value, and Bit sequence. Time difference is a 32-bit binary value, and standardized values range from -200% to 2000%.

Spontaneous Messages
Activated by parameters 538, 540, or 953, these messages are sent when a parameter value changes. They are stored in a FIFO buffer and transmitted until acknowledged by the master.

Synchronize and Freeze
SYNC/UNSYNC and FREEZE/UNFREEZE are broadcast functions affecting Process Data. SYNC/UNSYNC synchronizes control commands, while FREEZE/UNFREEZE synchronizes feedback from slaves.

Clear Mode/Fail Safe
In case of disturbances, the DP master enters Clear Mode. The drive's reaction depends on parameters 804 and 805. Fail Safe ensures slaves detect a clear state of the master.

Control Word/Status Word
Control words send commands to the frequency converter, while status words inform the master of the converter's condition. Different bit settings in the control word dictate actions like motor coasting, quick-stop, and ramp stop.

Control and Status Words
The document outlines the control and status words used in the FCM 300, FCD 300, and VLT 2800 series. Control words are used to manage the state of the device, with specific bits indicating readiness, fault status, speed reference, and operational mode. Status words provide feedback on the device's current state, such as running status, voltage, torque, and thermal warnings.

Parameter Settings
The document provides detailed instructions on setting parameters for frequency converters, including serial port settings, fieldbus profiles, and process data objects. It explains how to change parameters like ramp-up time and speed reference using PPO type 1.

PROFIBUS Communication
The document describes the PROFIBUS-specific parameters and their functions, such as protocol selection, bus timeout settings, and control word bit functions. It also explains the significance of GSD files for compatibility and configuration.

Parameter Configuration
Parameters specific to PROFIBUS (800-805, 904, etc.) are highlighted, with explanations on how they affect communication and control. The document emphasizes the importance of certain parameters that are not covered in the manual but are crucial for operation.

PPO Types
Different PPO types are described, each with varying byte sizes and functionalities for parameter reading/writing and process data handling. The document provides a detailed description of each PPO type and its application.

Extended Diagnosis
The document mentions the option to expand diagnosis data to 24 bytes, allowing for more detailed alarm and warning information.

Overview
This document provides technical specifications and operational instructions for Danfoss VLT® drives, specifically models FCM 300, FCD 300, and VLT® 2800, with a focus on Profibus DP V1 communication.

Specifications

Data readouts include bus feedback, inverter temperature, alarm, control, warning, and extended status words.
Parameters such as operating hours, kWh counter, number of cut-ins, overtemperatures, and overvoltages are detailed.
Fault logs capture error codes, time, and values.
Nameplate information includes unit type, software version, and identification numbers.

Procedures

Parameter setup allows for individual programming across four setups, with conversion indices for serial communication.
Data types are categorized as integers, unsigned integers, and text strings.

Communication and Connectivity

Bus termination and topology are explained for different models.
Physical connections and cable lengths are specified for FCM 300 and FCD 300.
Control word functions and cyclical transmission are outlined.

Standards and Recommendations

EMC precautions and earth connections are emphasized for safety.
Profibus DP and DP V1 features, including master type connections and data exchange principles, are described.

Warnings and Alarms

Details on alarm and warning messages, including error codes and status words, are provided.

Additional Information

Includes an index of abbreviations, assumptions, and quick start guidelines.
LED indicators for different models are explained.

Catalog excerpts

Operating Instructions

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Contents Introduction Quick Start System layout Warnings and alarm messages Station address Glossary Parameter list Index MG.90.A5.02 - VLT is a registered Danfoss trademark

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FCM 300 / FCD 300 / VLT® 2800 / DP V1 PROFIBUS ■ Introduction Copyrights, Limitation of Liability and Revision Rights. Indicates a high-voltage warning. This publication contains information proprietary to Danfoss A/S. By accepting and using this manual the user agrees that the information contained herein will PROFIBUS is a registered trademark. be used solely for operating equipment of Danfoss A/S ■ About this manual or equipment from other vendors provided that such This manual describes the Profibus communication equipment is intended for communication with Danfoss in the following products:...

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FCM 300 / FCD 300 / VLT® 2800 / DP V1 PROFIBUS The Profibus DP V1 replaces the former Profibus DP V0 functionality. Note: The 3MB and 12MB Profibus option are separate options and have different ordering numbers. ■ What you should already know The DANFOSS PROFIBUS is designed to communicate with any master abiding by the PROFIBUS DP standard. It is therefore assumed that you have full knowledge of the PC or PLC you intend to use as a master in your system. Any questions pertaining to hardware or software produced by any other manufacturer is beyond the scope of this manual and is of no concern...

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FCM 300 / FCD 300 / VLT® 2800 / DP V1 PROFIBUS ■ Quick start Details regarding the programming of the usual frequency converter parameters may be gathered from the Design Guide for the FCM 300, the FCD 300 and VLT 2800. The communication is established by setting the parameters indicated below. Details regarding the adjustment of the master are provided by the master manual and by those chapters in this manual that deal with the particulars of the VLT PROFIBUS interface. NB!: The required GSD file is available on the internet at http://www.danfoss.com/drives. ■ Profibus DP Parameter 904 The desired...

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FCM 300 / FCD 300 / VLT® 2800 / DP V1 PROFIBUS ■ Master-controlled frequency converters The PROFIBUS Fieldbus was designed to give you unprecedented flexibility and command over your controlled system. The PROFIBUS will perform as an integrated part of your frequency converter, giving you access to all parameters relevant to your application. The frequency converter will always act as a slave, and together with a master it can exchange a multitude of information and commands. Control signals such as speed reference, start / stop of motor, reverse operation, etc. are transmitted from the master...

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FCM 300 / FCD 300 / VLT® 2800 / DP V1 PROFIBUS ■ Bus topology Single master operation with DP V0 Single master PLC communicates with telegrams of constant length Fits to time critical requirements Cyclical transmission (PLC) 1. Setpoint transmission 2. Actual value feedback 3. New set points computed 4. New set point transmission 5. Parameter Read - using PCV channel 6. Parameter Write - using PCV channel 7. Read parameter description - using PCV channel ■ Features of DP (Distributed Periphery) - Is used by several PLC manufacturers for remote peripheral I/O communication. - Supports cyclical...

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FCM 300 / FCD 300 / VLT® 2800 / DP V1 PROFIBUS ■ Profibus DP V1 The Profibus DP extension DP V1 offers additional to the cyclical data communication an acyclical communication. This feature can be used by a DP master type 1 (e.g. PLC), as well as a DP master type 2 (e.g. PC tool). Features of a Master type 1 connection - Cyclical data exchange (DP V0). - Acyclical read/write on parameters. The acyclical connection is fixed, and can not be changed during operation. Features of a Master type 2 connection: - Initiate / Abort acyclical connection. - Acyclical read/write on parameters. The acyclical...

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FCM 300 / FCD 300 / VLT® 2800 / DP V1 PROFIBUS ■ FCM 300/FCD 300/VLT 2800 response time The update time via the prodibus connection can be divided in two parts: 1) The communication time, which is the time it takes to transmit data from the master to the slave (FCM 300/FCD 300/VLT 2800 with profibus), and 2) the internal update time, which is the time it takes to transmit data between the FCM 300/FCD 300/VLT 2800 control card and the profibus. Communication time (tcom) depends on the actual transmission speed (baudrate) and the type of master in use. The minimum obtainable communication time...

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FCM 300 / FCD 300 / VLT® 2800 / DP V1 PROFIBUS The Profibus Interface The total drop cable length for one segment is limited as stated in the table below. Drop cable length Transmission speed - Resistance: - Capacity: - Damping: Max. drop cable lenth per segment [m] 96 - Cross section: 187.5 kBaud 500 kBaud 1.5 mBaud 3-12 MBaud The length statements in the tables above are valid provided that bus cable with the following properties is used: - Cable type: - Screening: 135 to 165 ohm at a measuring frequency from 3 to 20 MHz < 110 ohm/km < 30 pF/m max. 9 dB over the whole wire length max. 0.34...

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Max. total bus cable length Transmission speed 1 segment: 32 nodes (31 VLT) [m] 9.6-187.5 kBaud 500 kBaud 1.5 MBaud 3 - 12 MBaud MG.90.A5.02 - VLT is a registered Danfoss trademark

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FCM 300 / FCD 300 / VLT® 2800 / DP V1 PROFIBUS ■ Physical connection The PROFIBUS is connected to the bus line via X100, terminals 1 and 2. It is recommended to use a master with a galvanic isolated bus driver and with over voltage protection (e.g. zenerdiode). EMC precautions The following EMC precautions are recommended to obtain interference free operation of the PROFIBUS network. Additional information on EMC can be found in the design guide on the FCM 300 (MG.03.BX.02). Please also consult the manual of the PROFIBUS master for further installation guidelines. earth potential. The earth connection...

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2 = RxD/TxD-N∼ (green cable) It is essential that the bus line is terminated properly. A mismatch of impedance may result in reflections on the line that will corrupt data transmission. - The PROFIBUS is provided with a suitable termination which may be activated by the switches of the RS485 switch block located just to the left of the terminal block X100 (see drawing below). The switches should be on to terminate the bus. NB!: The switches should never be left in opposite positions. They should either both be ON or both be OFF! Most masters and repeaters are equipped with their own termination....

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