PROFIBUS DP – Zusatzanleitung für NORD Frequenzumrichter SK 200E Safety information GB BU 0220 PROFIBUS DP – Supplementary manual BU 0220Frequency GB-0912 for NORD Inverter SK 200E 1
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE Safety information 2 BU 0220 GB-0912
PROFIBUS DP – Zusatzanleitung für NORD Frequenzumrichter SK 200E Safety information NORD frequency inverters Safety and operating instructions for drive power converters (as per: Low Voltage Directive 2006/95/EEC ) 1. General During operation, drive power converters may, depending on their protection class, have live, bare, moving or rotating parts or hot surfaces.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE About this document Documentation Designation: BU 0220 GB Part No.: 607 22 01 Device series: PROFIBUS DP for SK 2xxE Device types: SK CU4-PBR SK TU4-PBR(-C) with SK TI4-TU-BUS SK TU4-PBR-M12(-C) with SK TI4-TU-BUS Version list Designation of previous versions Software Version Remarks BU 0220 DE, June 2009 V 1.1 R1 First issue V 1.2 R0 The bus module also recognises the SK 54xE, Part No.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE zu diesem Dokument Intended use of the frequency inverter The compliance with the operating instructions is necessary for fault-free operation and the acceptance of possible warranty claims. These operating instructions must be read before working with the device! These operating instructions contain important information about servicing. They must therefore be kept close to the device.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 1 GENERAL INFORMATION ...................................................................................................... 8 1.1 Overview .............................................................................................................. 9 1.2 Delivery ................................................................................................................ 9 1.3 Scope of supply ........................................
Table of Contents 7 PROFIBUS DP DATA TRANSFER ........................................................................................58 7.1 Structure of reference data .................................................................................58 7.2 PROFIBUS DP PPO types .................................................................................59 7.2.1 Process data (PZD)................................................................................................. 60 7.2.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 1 General information Various technology options are available for Getriebebau Nord frequency inverters. General information regarding these can be found in the relevant main manual of the frequency inverter series (e.g. Manual BU0200 for the SK 200E frequency inverter series). Further information concerning special technology options (e.g. the field bus module) is included in the relevant supplementary operating instructions.
1 General information 1.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 1.3 Scope of supply Standard version: SK CU4-PBR IP20 or SK TU4-PBR(-M12)(-C) IP55 (optionally IP66) Operating instructions as PDF file on CD ROM including NORDCON, (Windows PC-based parameterisation software) Available accessories: SK TI4-TU-BUS(-C) (bus connection unit, required for SK TU4…) SK TIE4-WMK-TU, wall-mounting kit TU4 M12 round plug connector (Section 8.
1 General information 1.5 Type code / Optional BUS modules BUS = Bus module or I/O extension SK TU4-PBR (-C-M12-WMK-TU) Wall mounting kit: for external technology unit, TU4 M12 system connector: only TU4, alternative to terminals IP protection class: Standard = IP55, C = "coated" IP66 Option type: CAO = CANopen, PBR = Profibus, DEV = DeviceNet, IOE = I/O extension Option series: TU4 = external technology unit CU4 = internal customer unit (...) Options, only implemented if required.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 1.6 Version with protection class IP55 / IP66 The SK 2xxE frequency inverter and the external additional modules are available with protection classes IP55 (Standard) or IP66 (optional) and in all sizes and power ratings. The protection class IP66 must always be stated when ordering! There are no restrictions or differences to the scope of functions in either protection class.
2 Assembly and installation 2 Assembly and installation 2.1 Installation and assembly Internal and external technology modules designed for the SK 2xxE frequency inverter series are available for PROFIBUS DP. Except for the number of digital inputs and outputs, the functionalities of the various PROFIBUS modules are identical. These are used to connect SK 200E series speed regulated drive units to overriding automation systems via the PROFIBUS DP field bus.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE The external technology modules (Technology Unit, SK TU4-...) – designated as the technology unit – are externally attached to the SK 2xxE connection unit and are therefore easy to access. Mounting of the SK TU4-... separate from the frequency inverter is possible by means of the wall mounting kit SK TIE4-WMK-TU. Electrical connection to the SK 2xxE is made via the internal system bus.
2 Assembly and installation 2.1.1 Overview of the PROFIBUS DP modules Bus Module Description Profibus module SK CU4-PBR Part No. 275271000 (IP20) This option enables control of the SK 2xxE via PROFIBUS DP. This option is integrated into the connection unit of the frequency inverter. Profibus module *) SK TU4-PBR(-C) This option enables control of the SK 2xxE via PROFIBUS DP. Part No. 275281100 (IP55) Part No. 275281150 (IP66) This option is installed externally to the frequency inverter.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 2.1.2 Installing the Customer Unit SK CU4-PBR WARNING Installation must be carried out by qualified personnel only, paying particular attention to safety and warning instructions. Modules must not be inserted or removed unless the device is free of voltage. The slots may only be used for the intended modules. Installation of the SK CU4-... customer unit remote from the frequency inverter is not permitted.
2 Assembly and installation 2.1.3 Installing the SK TU4-PBR-… technology unit WARNING Installation must be carried out by qualified personnel only, paying particular attention to safety and warning instructions. Modules must not be installed or removed unless the device is free of voltage. The slots may only be used for the intended modules. Mounting of the external technology unit remote from the frequency inverter is possible with the additional wall-mounting kit (SK TIE4-WMK-TU).
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 2.1.3.3 Mounting the SK TI4-TU-BUS on the SK 200E The screw fittings and seals required for installation are enclosed with the modules or are fitted to the intended locations. Mounting of the technology unit on the SK 200E must be carried out as follows: 1. Switch off the mains. 2. Remove the two M25 caps on the required side of the frequency inverter (right / left). 3.
2 Assembly and installation 2.2 Electrical connection WARNING THE DEVICES MUST BE EARTHED. Safe operation of the devices requires that is installed and commissioned by qualified personnel in compliance with the instructions provided in this Manual. In particular, the general and regional installation and safety regulations for work on high voltage systems (e.g. VDE) must be complied with as must the regulations concerning correct use of tools and the use of personal protection equipment.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 2.2.2 Control connections The PROFIBUS DP modules must be provided with a 24V DC (±20%, 100mA) control voltage. Wire end sleeves must be used for flexible cables. Name Data Rigid cable cross-section 0.14 … 2.5mm² Flexible cable cross-section 0.14 … 1.5mm² AWG standard AWG 26-14 Tightening torque (for screw terminals) 0.5 … 0.6Nm Within the terminal box (unshielded cable section) the data cables (e.g.
2 Assembly and installation 2.2.2.1 Control connections SK CU4-PBR The terminal bar of the customer unit SK CU4-PBR is divided into two potential levels.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE Control connection details Terminal/ Function Data Description / wiring suggestion Parameter Name 44 24V 24V supply (Module, field and system bus level) 40 GND / 0V C1 DIN1 Reference potential for digital signals 24VDC ±20% ≈ 90mA reverse polarity protected max. permissible current load: 2A Digital input 1 Low 0V ... 5V (I/O PROFIBUS DP DIN1) High 15V ... 30V Ri = 8.
2 Assembly and installation 2.2.2.2 Control connections of the SK TU4-PBR(-...) The double spring-loaded terminal bar of the bus connection unit is colour coded, and therefore indicates the three different potential levels. Terminals 1 and 2 have the same potential as the 24V terminals of the system bus level (e.g. Terminal 11). However, electrical connection between these terminals is only implemented by mounting the bus module onto the bus connection unit.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE NOTE The data cables (Terminals 3/4 or Terminals 5/6) or the Terminals 1 and 2 to Terminal 11 are only contacted by mounting the bus module. NOTE Looping of the 24V supply voltage or GND is possible (except for Terminals 1 and 2), however a maximum current load of 3A for the SK TU4-PBR(-…) must not be exceeded. Only adjacent terminals (e.g.: X5:11/12) may be used for looping.
2 Assembly and installation Control connection details Terminal/ Function Data Description / wiring suggestion 24V supply 24VDC ±20% (Module, field and system bus level) ≈ 90 mA reverse polarity protected Parameter Name 1 24V 2 Max. permissible current load: 500mA Connection of the sensor supply voltage via DC/DC converter to Terminal 11.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE Terminal/ Function Data Description / wiring suggestion GND Reference potential for digital signals As for terminal 15 24V supply As for terminal 1 (Module, field and system bus level) However, max. permissible current load: 3A Digital input 2 Low 0V ... 5V High 15V ... 30V Ri = 8.
2 Assembly and installation 2.2.3 Configuration The configuration for all PROFIBUS DP module versions is identical. All necessary settings are made using the hardware via a DIP switch element (3+8 part switching block).
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE NOTE For the termination of the PROFIBUS DP both termination resistors "PB Term" must be set to "ON". PPO-Type The PPO type used by the bus master is automatically detected by the PROFIBUS DP modules (SK CU4-PBR und SK TU4-PBR-…). Configuration example A PROFIBUS participant SK TU4-PBR is connected to an SK 200E series frequency inverter via a BUS connection unit SK T14-TU-BUS. The field bus address (PROFIBUS DP address) is to be "14".
3 Displays and diagnosis 3 Displays and diagnosis Various diagnosis possibilities are available, depending on the device. Operating conditions or errors are visualised by means of LEDs. PC-based communication or the connection of a parameterisation unit is possible via an RS232 interface (RJ12 diagnostic socket).
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 3.1.1.2 Customer unit SK CU4-PBR LEDs BR (or BS) and BE The dual LEDs BR (BUS Ready) and BE (BUS Error) indicate the communication status of the PROFIBUS DP. LEDs DS and DE The dual colour LEDs DS (Device State) and DE (Device Error) indicate the status of the module and the status of the system bus.
3 Displays and diagnosis 3.1.2 Signal status LEDs This manual only describes the LED signal statuses of the PROFIBUS DP modules. Information for the frequency inverter LEDs (SK 2xxE) can be found in the relevant manual (BU0200). 3.1.2.1 Module-specific displays The status of the technology unit or the system bus is indicated by the LEDs DS and DE. LED (green) DS Device State LED (red) DE Device Error Meaning ... Slow flashing = 2Hz (0.5s cycle) … Rapid flashing= 4Hz (0.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 3.1.2.2 PROFIBUS DP displays The status of the PROFIBUS DP module is indicated by the BR and BE LEDs. LED (dual colour) BR Bus Ready OFF LED (dual colour) Meaning ... Slow flashing = 2Hz (0.5s cycle) BE Bus Error OFF Technology unit not ready, no control voltage or system error is indicated Details: LED flashing code: DS and DE (Section 3.1.2.1 "Module-specific displays").
3 Displays and diagnosis 3.1.2.3 I/O Displays The status of additional digital inputs and outputs on the BUS module is indicated by corresponding LEDs (except for SK TU4-PBR(-C)).
3.2 RJ12 Diagnostic socket All participants which are coupled via a common system bus (field bus module / frequency inverter (up to 4 devices)) can be read out and edited/parameterised via an RJ12 diagnostic socket. Either the diagnostic socket of the frequency inverter or that of the BUS connection units can be used. This provides users with a convenient facility to perform diagnosis and parameterisation from a central point, without having to access the particular frequency inverter at its location.
3 Displays and diagnosis Alternatively, diagnosis can be performed via a Windows PC with the aid of NORD CON software (available free of charge from www.nord.com). The necessary connection cable (RJ12 - SUB D9) is available from Getriebebau Nord GmbH as part number 278910240. If necessary, an interface converter from SUB D9 to USB2.0 is commercially available.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 4 Commissioning In order to operate the SK 200E frequency inverter with the PROFIBUS DP protocol, in addition to the bus connection to the master, the PROFIBUS DP modules must be implemented in the automation concept. This section describes the hardware planning and network structure on the basis of a SIMATIC S7 project with diagrams from the planning tool STEP 7.
4 Commissioning Configuration steps The following items must be configured in the planning of an SK CU4-… or SK TU4-PBR(-M12) technology unit: PROFIBUS address Setting the PROFIBUS DP with DIP switches (Section 2.2.3 "Configuration ") Integration of the DP slave (technology unit) on the PROFIBUS DP Select the components from the catalogue and integrate them into the PROFIBUS DP string.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE The system modules SFB 52 "RDREC" (read record) and SFB 53 "WRREC" to be used for acyclic data traffic in the PLC program sequence access Slot 0 via the "diagnosis address" of the PROFIBUS DP technology unit. The "diagnosis address" can be read out via the "object properties" of the DP slave.
4 Commissioning 4.2.2.4 Profibus I/O Modules This setting variant is exclusively reserved for the PROFIBUS DP module SK CU4-PBR or SK TU4-PBR…) which is connected to the system bus. This setting enables the DP master to directly access the digital I/Os of the module. In this 1 byte module, the digital outputs must be set as "output byte" and the digital inputs as "input byte". The "Profibus module I/O" must always be set to Slot 1 in the DP slave.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 4.2.3 Timeout monitoring There are two different communication monitoring variants. 4.2.3.1 Access monitoring of DP master Access monitoring is a monitoring function which is controlled by the PROFIBUS DP master. With this, the DP master communicates a calculated time interval to each DP slave, within which a communication step must take place.
5 Parameterisation 5 Parameterisation In order to enable communication via PROFIBUS DP, the frequency inverter and the PROFIBUS DP technology Unit must be parameterised accordingly. With the PROFIBUS DP protocol, the inverter parameters are mapped in the range 1000 to 1999, i.e. for parameterisation via the bus in cyclic data traffic (PPO type 1 or 2) 1000 must be added to the parameter numbers (e.g. (P508) - (P1508). 5.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 5.1.2 Control clamp parameter (P400) Parameter {Factory setting} … [-01] ... … [-04] P420 0 ... 77 Setting value / Description / Note Device Parameter set Supervisor Digital inputs 1 to 4 { [-01] = 01 } In the SK 200E, up to 4 freely programmable digital inputs are available. The only restriction is with the versions SK 215E and SK 235E. Here, the fourth digital input is always the input for the function "Safe Stop".
5 Parameterisation Parameter {Factory setting} P480 ... [-01] ... ... [-12] 0 ... 77 Setting value / Description / Note Device Supervisor Parameter set Function Bus I/O In Bits The Bus I/O In Bits are perceived as digital inputs. They can be set to the same functions (P420). { [-01] = 01 } { [-02] = 02 } These I/O bits can also be used in combination with the AS Interface (SK 225E or SK 235E) or the I/O extension (SK CU4-IOE or SK TU4-IOE).
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 5.1.3 Supplementary parameters (P500) Parameter {Factory setting} P509 Setting value / Description / Note Device Source Control Word 0 ... 4 Parameter set Supervisor S Selection of the interface via which the FI is controlled. 0 = Control terminals or keyboard control** with the SimpleBox (if (P510)=0), the ParameterBox or via BUS I/O Bits.
5 Parameterisation Parameter {Factory setting} P514 Setting value / Description / Note Device Supervisor CAN baud rate (system bus) 0 ... 7 Parameter set S Setting of the transfer rate (transfer speed) via the system bus interface. All bus participants must have the same baud rate setting.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE Parameter {Factory setting} P546 … [-01] ... … [-03] Setting value / Description / Note Device Supervisor Function Bus setpoint 1 ... 3 Parameter set S P 0 ... 32 In this parameter, a function is allocated to the output setpoint during bus actuation.
5 Parameterisation Parameter {Factory setting} P552 … [-01] … [-02] 0 / 0.1 … 100.0 ms {0} Setting value / Description / Note Device System bus master cycle time Supervisor Parameter set S In this parameter, the cycle time for the system bus master mode and the CAN open encoder is set (see P503/514/515): … [01] = Cycle time for system bus master functions … [02] = Cycle time for system bus absolute value encoder With the setting 0 “Auto” the default value (see table) is used.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 5.1.4 Information parameters (P700) Parameter Setting value / Description / Note P700 Device Supervisor Parameter set Actual error 0.0 ... 21.4 Actual error present. Further details are described in the frequency inverter manual (BU0200). SimpleBox: Descriptions of the individual error numbers can be found in the point Error messages.
5 Parameterisation Parameter P741 Setting value / Description / Note ... [-01] ... Device Process data bus Out Supervisor Parameter set S ... [-10] 0000 ... FFFF (hex) This parameter provides information about the actual status word and the actual values that are transferred via the bus systems. ... [-01] = Status word Status word ... [-02] = Actual value 1 (P543 [-01]) ... [-03] = Actual value 2 (P543 [-02]) ... [-04] = Actual value 3 (P543 [-03]) ...
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 5.2 Parameterisation of the bus module (SK CU4-… or SK TU4-…) The following parameters affect the bus modules. 5.2.1 BUS module standard parameters (P150) Parameter Setting value / Description / Note {Factory setting} P150 Device Supervisor Parameter set Set relays 0 ... 4 0 = Via bus 3 = Output 2 to (DO2) {0} 1 = Outputs OFF 4 = Outputs 1 and 2 ON 2 = Output 1 to (DO1) P151 Timeout for external bus 0 ...
5 Parameterisation 5.2.2 BUS module information parameters, general (P170) Parameter P170 Setting value / Description / Note ... [-01] ... [-02] 0 ... 9999 Device Supervisor Parameter set Actual error Further details in Section 6.2 "Error messages".
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE Parameter P173 0 ...
5 Parameterisation Parameter P176 Setting value / Description / Note ... [-01] ... Device Supervisor Parameter set Process data bus In ... [-17] -32768 ...
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 5.2.3 Module information parameters specific to the bus (P180) Parameter Setting value / Description / Note P180 Device Supervisor Parameter set Profibus address 3 ... 125 Shows the PROFIBUS address which is set with the DIP switch. Setting of the address is only carried out via the DIP switch (see Section 2.2.3 ).
6 Error monitoring and error messages 6 Error monitoring and error messages 6.1 Error monitoring The majority of bus module and frequency inverter functions and operating data are continuously monitored and simultaneously compared with limiting values. If a deviation is detected, the bus module or inverter reacts with a warning or an error message. For basic information, please refer to the relevant main manual of the frequency inverter.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 6.2 Error messages 6.2.1 Table of possible error messages (caused by the bus) in the frequency inverter The following error messages concern bus-related messages which are indicated on the frequency inverter. A complete list of error messages for the frequency inverter (SK 200E) can be found in the relevant manual (BU0200). Display in the SimpleBox Group Details in P700[-01] / P701 E010 10.
6 Error monitoring and error messages 6.2.2 Table of possible error messages in the bus module The following error messages concern bus-related messages, which are indicated on the PROFIBUS DP module (SK CU4-PBR or SK TU4-PBR(-…)).
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 7 PROFIBUS DP data transfer 7.1 Structure of reference data This section describes the cyclic data traffic between the DP master and the frequency inverter. The reference data is divided into two sections: PKW section (Parameter Code Value (parameterisation level)) PZD section (Process data (process data level)) Parameter values can be read and written via the PKW section of the reference data.
7 PROFIBUS DP data transfer 7.2 PROFIBUS DP PPO types For cyclic data traffic, the Parameter- Process data Object (PPO) with which the process data (PZD) and parameters (PKW) are transferred from the DP master to the frequency inverter is defined. The frequency inverter can process PPO types 1, 2, 3 or 4.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 7.2.1 Process data (PZD) In the process data area (PZD), control words and setpoints are transferred from the master to the slave (frequency inverter) and in return, status words and actual values are sent from the slave to the master.
7 PROFIBUS DP data transfer 7.2.1.1 Control word (STW) The control word (STW) is the first word transferred to the frequency inverter in the process data section in an order telegram. For example, a control word "Ready for switch-on" corresponds to 047E(hex). The FI is ultimately enabled with 047F(hex).
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 7.2.1.2 Status word (ZSW) In the inverter response telegram, in the area of the process data the status word (ZSW) is transferred as the first word. For example, the status word "Ready for switch-on" corresponds to 0B31(hex). For example, the status word "Inverter operating" corresponds to 0B37(hex).
7 PROFIBUS DP data transfer 7.2.1.3 Setpoint 1 (SW1) The function of the first setpoint is set in the parameter "Function bus setpoint 1" (SK 200E: (P546[01]) or SK 500E: (P546)) (see relevant frequency inverter manual). In the order telegram, setpoint 1 follows immediately after the control word. Setpoint 1 is pre-set to the transfer of a setpoint frequency (16 bit value).
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE Example If a position setpoint is to be transferred (Prerequisite: posicon inverter functionality) this can be performed either as a 16 bit or 32 bit value. The resolution is always 0.001 rotations/step. A value range of +32767 (= 32.767 revolutions) to -32768 (= -32.768 revolutions) is possible as a 16 Bit value. Here, exactly one PZD word is required in order to transfer the position. The full position range of +/- 50000.
7 PROFIBUS DP data transfer 7.2.1.7 BIT8 and BIT9 control word Up to 2 inverter functions can be set directly via the bus master or the PLC by means of the control word. For this, the required digital function (see list in parameter P420) must be assigned to Bit 8 of the control word via parameter (P480 [-11]). The same procedure should be applied to Bit 9 of the control word and the function assigned in parameter (P480 [-12]).
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 7.2.2 The status machine The frequency inverter passes through a status machine. The changes between various states are triggered by the respective control commands in the process data control word. The actual status is returned in the process data status word. After switching on, the frequency inverter is in Switch-on disabled status. This status can only be ended by transmitting the “Shut down (Off 1)” command.
7 PROFIBUS DP data transfer 5 Internal status machine Sw itching on the inverter Bit2 = 0: Fast stop 1 Not on standby 3 4 5 6 6 8 Fast stop active Bit1 = 0: Disable voltage v Bit2 = 0: Fast stop Loading relay applied 2 f = 0 reached (fast stop complete) 2 4 Sw itch-on disabled 5 From all device statuses Bit0 = 0: Shut dow n & Bit1 = 1: Enable voltage & Bit2 = 1: Enable pulses (xxxx x1xx xxxx x110) Bit0 = 0: Shut dow n Fault 3 2 5 7 Error reaction active Standby 5 Bit 3 = 0: Disa
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 7.2.3 Parameter area (Parameter code value PKW) Using the PKW mechanism, parameter processing can be carried out in the cyclical data traffic. For this the master formulates an order and the inverter formulates the appropriate response to this. The parameter area is only used for transfer with PPO type 1 and PPO type 2. In principle, the parameter range consists of a parameter identification, in which the type of order (Write, Read etc.
7 PROFIBUS DP data transfer Meaning of the values sent in the order label: The following table lists all the orders which can be transferred from the master to the inverter. The right-hand column contains the response, which is normally sent (response label positive). Only certain response labels are possible, depending on the order label. In case of error (AK negative) the inverter will always supply the value 7 in the response label (AK) to the master.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE Error messages if the order cannot be executed In the response label "Order cannot be executed" (AK = 7), then an error message is added to the parameter value (PWE2) of the inverter response. The meanings of the transferred values are: 70 No.
7 PROFIBUS DP data transfer 7.2.3.2 Parameter index Sub-index (IND) 15 14 13 1 2 3 4 PKE IND PWE1 PWE2 12 11 10 9 8 P1-P4 Array 1-64 7 6 5 4 3 2 1 0 No information / all 0 P1-P4 Sub-index The structure and function of the parameter index (IND) depends on the type of parameter to be transferred. For values which depend on the parameter set, the parameter set can be selected via Bits 8 and 9 of the Index (IND) (0 = parameter set 1, 1 = parameter set 2, ...).
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 7.3 Example telegrams 7.3.1 Switch-on disabled → Standby A frequency inverter is to be switched from the "Switch-on disabled" status (STW Bit 0 – 0), which is active when the device is switched on, to the "Standby" status (STW Bit 0 = 1). The PPO type 1 (Section 7.2) is used, however only the PZD channel is considered. Procedure: 1) Check last status word (e.g.
7 PROFIBUS DP data transfer 3) Check response telegram (ZSW 0B 31) After changing to Standby status, the frequency inverter delivers the following response telegram: word Byte Designation Value 5 6 8 9 10 ZSW 0B 31 11 IW1 00 00 NOTE The control telegram must be sent cyclically as the frequency inverter may not switch to the required status within the response time of a telegram.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 7.3.2 Enable with 50% setpoint A frequency inverter in the "Standby" status must be enabled for clockwise rotation with 50% setpoint. The PPO type 1 (Section 7.2) is used, however only the PZD channel is considered. Procedure: 1) Check last status word (e.g.
7 PROFIBUS DP data transfer 7.3.3 Writing a parameter When transferring parameter orders, it must be taken into account that the slave does not immediately respond to orders in the parameter channel of the master telegram, but a positive response can be delayed by one or more communication cycles. The master must therefore repeat the required order until the corresponding slave response is received. PPO type 1 or PPO type 2 must be selected (Section 7.2).
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 8 Additional information 8.1 Bus Configuration In an industrial environment the correct installation of the Bus system is particularly important in order to reduce potential interference. The following points are designed to help prevent interference and problems right from the start. The installation guidelines are not complete and applicable safety and accident prevention guidelines must be complied with. 8.1.
8 Additional information NOTE The lower the shielding resistance of the PROFIBUS DP cable, the better the EMC quality. The electromagnetic compatibility (EMC) describes the normally required state, that technical devices do not interfere with each other due to electrical or electromagnetic effects. 8.1.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 8.1.4 Recommendations of the PROFIBUS users´ association Under www.profibus.com/pb/ important information in association with PROFIBUS can be found in the Internet, including: "Installation guidelines for PROFIBUS-DP/FMS", September 1998, Order No. 2.111 Guideline Assembling, Version 1.06, Order Number 8.021/8.022 Guideline Commissioning, Version, 1.02, Order Number 8.031/8.032 Planning recommendations: www.profibus.
8 Additional information 8.2 Cable glands and shielding connections Nowadays, field bus systems are a normal part of plant technology. The sensitivity of these systems to electromagnetic interference (EMC) means that it is essential to protect bus systems from outside interference by means of uninterrupted or complete screening. Therefore the use of shielded cables and metal screw couplings or plug connectors has become standard. Assuming correct installation (e.g.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 8.2.2 Connection with M12 round plug connectors In order to implement detachable connections, the cable connections for the field and system bus and for sensors and actuators, as well as for the 24V supply voltage can be designed with plug-in connectors. Here, freely adjustable M12 flanged connectors with metric M16 x 1.5 threads should be used for installation in the relevant housing ((SK TI4-…(-BUS)).
8 Additional information 8.2.3.1 M12 flanged connector The following flanged plugs and flanged couplings are available for installation in devices. System components Description Data System bus A-coded, 5-pin SK TIE4-M12-SYSS Part. No. 275274506 M12 flanged plug to connect the incoming system bus cable PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 n. c. +24V GND Sys-H Sys-L (brown) (blue) (black) (gray) Plastic body in light blue A-coded, 5-pin SK TIE4-M12-SYSM Part. No.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 8.2.3.2 M12 round plug connector (cable connector) The following plug connectors are recommended by Getriebebau NORD GmbH. Plug connectors with a socalled Part No. can also be supplied by Getriebebau NORD GmbH. M12 connector B coded A-Leitung/ A cable B-Leitung/ B cable Article No. / Part No. Supplier Name straight angled M12 plug, 7…8.8mm, 3-pin, cutting type, IP67, shielded 7000-14201-0000000 / MURR Elektronik M12 plug, 6...
8 Additional information 8.2.3.3 Assembly tools The observance of the tightening torques for making plug connections is of vital importance. For M12 plug connectors, the optimum torque is 0.6Nm. Suitable assembly tools are commercially available. M12 wrench Supplier Name Part no. MURR Elektronik M12 wrench set for M12 round connectors with calibrated torque of 0.6Nm Franz Binder GmbH M12 torque wrench for M12 round connectors with calibrated torque of 0.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 8.3 PROFIBUS DP technology and protocol The PROFIBUS (Process Field Bus) is the fastest standardised (open) bus system for field use. This technology enables consistent communication down to the lowest field level and is widely used in production, process and building automation systems. PROFIBUS is standardised in the international standard IEC 61158.
8 Additional information 8.3.2 Device types PROFIBUS DP is an acronym for "Process Field Bus for Decentralised Peripherals" i.e. for the simple, rapid, cyclic and deterministic exchange of process data between a PROFIBUS DP master and the assigned PROFIBUS DP slaves connected to the field bus.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 8.3.2.1 PROFIBUS master PROFIBUS masters are field devices, which take the initiative for the exchange of data with field devices which operate as slaves. A master has the sole access right to slaves on the bus and determines the data transfer on the bus. The master may send out messages without request if it has an access right (token).
8 Additional information 8.3.2.2 PROFIBUS slave PROFIBUS DP slaves are peripheral devices such as I/Os, drive units, HMIs, valves, measurement transponders, frequency inverters. The DP slaves do not receive any access rights, i.e. they can only confirm messages from the master or send messages to the master when requested. DP slaves are designated as passive participants. A slave reads in input information and sends out output information to the peripherals.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 8.3.3.2 PROFIBUS DP-V1 Amongst other things, DP-V1 contains additions for process automation and a series of event-related functions, in particular acyclic data traffic. Acyclic exchange of process data for parameterisation, operation, observation and alarm processing of intelligent field devices in parallel with the cyclic reference data traffic.
8 Additional information 8.3.4.2 Transfer rate (baud rate) The processing of all DP slaves describes a cycle. The time required for this depends on the transfer rate, the number of DP slaves and the net data to be sent. Diagram of bus cycle time For the transfer of 512 bit input and 512 bit output data divided over 32 bus participants, the PROFIBUS DP requires approx. 1ms with a transfer rate of 12 Mbit/s. A baud rate of 1.5Mbit/s extends the average cycle time to approx. 6ms. 8.3.4.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 8.3.4.4 Cyclic and acyclic data traffic The PROFIBUS technology units enable field bus access to all parameters and functions of the frequency inverter. Cyclic reference data traffic (process data) enables rapid control of bus participants. Via the standardised process data channel (parameter process data object (PPO)) setpoints (setpoint frequency, position setpoints, current limits etc.
8 Additional information Reading parameters Within the DPM2 master program, the system module SFB52 "RDREC" (read record) is used to read parameters. This system module reads the data set of the addressed component (module) of a DP slave. This may be a central module or a decentralised component (PROFIBUS DP), a technology unit. If an error occurs during data transfer, this is indicated via an output parameter (ERROR and STATUS) of the system module.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 8.3.4.5 Device master data (GSD file) All performance features of the NORDAC PROFIBUS DP module are collated in a device master file (electronic data sheet). The structure, content and coding of the device master file (GSD) are used (standardised in a readable ASCII text file) for simple PROFIBUS DP communication. The GSD file enables the convenient planning of NORDAC frequency inverters via tools from various control unit suppliers.
8 Additional information 8.3.4.7 Consistent data transfer A PLC can normally only consistently transfer double words by means of I/O memory access. For longer data formats (PKW channel always / PZD data with PPO2 or PPO4) system functions (e.g. SFC 14, consistent data reading / SFC15, consistent data writing) must be used. 8.3.4.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 8.4 System bus SK 2xxE series frequency inverters and components communicate with each other via the system bus. This bus system is a CAN bus with CANopen protocol. Up to four frequency inverters and their associated components (field bus module, absolute encoder, I/O modules etc.) can be connected to the system bus.
8 Additional information 8.5 Repairs The device must be sent to the following address if it needs repairing: NORD Electronic DRIVESYSTEMS GmbH Tjüchkampstr. 37 26605 Aurich, Germany For queries about repairs, please contact: Getriebebau NORD GmbH & Co. KG Telephone: 04532 / 401-515 Fax: 04532 / 401-555 If a frequency inverter or accessories are sent in for repair, no liability can be accepted for any added components, e.g. such as line cables, potentiometer, external displays, etc.
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 9 Index Keyword Index: 96 Address Assigned or specified designation of a DP slave. ASIC Integrated circuit specific to the application Baud rate The transmission rate for serial interfaces in bits per second Binary code The designation for a code in which messages are communicated by "0" and "1" signals. Bit / Byte A bit (binary digit) is the smallest unit of information in the binary system. A byte has 8 bits.
9 Index Abbreviations used: BE Bus error (fault) BR Bus ready BS BUS state (status) CU Customer Unit (customer interface - internal technology unit) D, DI, DIN Digital IN EN DEVICE error (fault) DO, DOUT Digital OUT DP Decentralized peripheral DS DEVICE state (status) EMC Electromagnetic compatibility FI Frequency inverters GND Earth HW Hardware IND Index I/O IN / OUT, input and output IW Actual value I&M Identification & Maintenance Functions P parameter which depends on
PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE 10 Keyword index DPM2 ......................................... 85 A Accessories.................................10 Parameterisation ........................ 41 Performance levels (DP-) ........... 87 E Actual value ................................ 64 EMC ..................................... 77, 79 Acyclic data traffic .................37, 90 EMC Directive ............................ 10 Adapter cable RJ12 ....................
10 Keyword index T Termination resistor ................... 27 Timeout ...................................... 40 U USS Time Out ...................... 56, 57 W Watchdog ................................... 40 Write parameter (acyclic) ............ 90 Token ................................... 85, 86 Transfer rate......................... 76, 89 Type code ..................................
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