NORD BU0220 User Manual

PROFIBUS DP – Zusatzanleitung für NORD Frequenzumrichter SK 200E Safety information

GB

BU 0220

PROFIBUS DP – Supplementary manual

for NORD Frequency Inverter SK 200E

BU 0220 GB-0912 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.

Unauthorised removal of covers, improper use, incorrect installation
or operation causes a risk of serious personal injury or material
damage.

Further information can be found in this documentation.
All transportation, installation, initialisation and maintenance work

must be carried out by qualified personnel (compliant with
IEC 364, CENELEC HD 384, DIN VDE 0100, IEC 664 or
DIN VDE 0110, and national accident prevention regulations).

For the purposes of these basic safety instructions, qualified
personnel are persons who are familiar with the assembly,
installation, commissioning and operation of this product and who
have the relevant qualifications for their work.

2. Proper use in Europe

Drive power converters are components intended for installation in
electrical systems or machines.

When installed in machines, the drive power converter cannot be
commissioned (i.e. commencement of the proper use) until it has
been ensured that the machine meets the provisions of the EC
Directive 2006/42/EEC (machine directive); EN 60204 must also be
complied with.

Commissioning (i.e. implementation of the proper use) is only
permitted when the EMC directive (2004/108/EEC) is complied with.

CE-labelled drive power converters meet the requirements of the
Low Voltage Directive 2006/95/EEC. The harmonised standards for
drive power converters listed in the declaration of conformity are
used.

Technical data and information for connection conditions can be
found on the rating plate and in the documentation, and must be
complied with.

The drive power converters may only be used for safety functions
which are described and explicitly approved.

3. Transport, storage

Information regarding transport, storage and correct handling must
be complied with.

4. Installation

The installation and cooling of the equipment must be implemented
according to the regulations in the corresponding documentation.

The drive power converter must be protected against
impermissible loads. Especially during transport and
handling, components must not be deformed and/or
insulation distances must not be changed. Touching of
electronic components and contacts must be avoided.

Drive power converters have electrostatically sensitive
components, which can be easily damaged by incorrect
handling. Electrical components must not be mechanically
damaged or destroyed (this may cause a health hazard!).

5. Electrical connection

When working on live drive power converters, the applicable
national accident prevention regulations must be complied
with (e.g. VBG A3, formerly VBG 4).

The electrical installation must be implemented according to
the applicable regulations (e.g. cable cross-section, fuses,
ground lead connections). Further instructions can be found
in the documentation.

Information about EMC-compliant installation – such as
shielding, earthing, location of filters and installation of
cables can be found in the drive power converter
documentation. These instructions must be complied with
even with CE marked drive power converters. Compliance
with the limiting values specified in the EMC regulations is
the responsibility of the manufacturer of the system or
machine.

6. operation

Where necessary, systems where drive power converters
are installed must be equipped with additional monitoring
and protective equipment according to the applicable safety
requirements, e.g. legislation concerning technical
equipment, accident prevention regulations, etc.

The parameterisation and configuration of the drive power
converter must be selected so that no hazards can occur.

All covers must be kept closed during operation.

7. Maintenance and repairs

After the drive power converter is disconnected from the
power supply, live equipment components and power
connections should not be touched immediately, because of
possible charged capacitors. Observe the applicable
information signs located on the drive power converter.

Further information can be found in this documentation.

These safety instructions must be kept in a safe place!

BU 0220 GB-0912 3

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE About this document

Designation of previous versions

Software
Version

Remarks

BU 0220 DE, June 2009
Part No. 607 2201 / 2609

V 1.1 R1

First issue

BU 0220 GB, February 2012
Part No. 607 2201 / 0912

V 1.2 R0

The bus module also recognises the SK 54xE,
Firmware update also possible via the CAN system bus,
Error corrections (e.g. connection via the Profibus data

cables PBA / PBB)
Supplements to Section 7.2.1.7 and 7.2.1.8 (assignment of

functions BIT 8/9 STW or BIT 10/13 ZSW
Parameters (P153) and (P154) supplemented

NOTE

This supplementary operating manual is only valid in conjunction with the operating manual
supplied for the respective frequency inverter.

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

Publisher

Getriebebau NORD GmbH & Co. KG

Rudolf- Diesel- Str. 1  D-22941 Bargteheide  Germany  http://www.nord.com/
Tel.: [phone] / 401-0  Fax [phone] / 401-555

4 BU 0220 GB-0912

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.

The field bus technology options described here are intended for use in combination with
SK 200 E series frequency inverters. The SK 5xxE can only be used with other series by
means of SK TU4-... Technology Units. The use of these technology options with other
devices is not permitted and can lead to their destruction.

The field bus technology options and the associated frequency inverters are devices for fixed
installation on motors or in equipment close to the motor to be operated. All details regarding
technical data and permissible conditions at the installation site must be complied with.

Commissioning (implementation of the intended use) is not permitted until it has been
ensured that the machine complies with the EMC directive 204/108/EEC and that the
conformity of the end product meets the machine directive 2006/42/EEC (note EN 60204).

 Getriebebau NORD GmbH & Co. KG, 2012

BU 0220 GB-0912 5

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 ................................................................................................. 10

1.4 Certifications ...................................................................................................... 10

1.4.1 European EMC Directive ........................................................................................ 10

1.4.2 RoHS compliance ................................................................................................... 10

1.5 Type code / Optional BUS modules .................................................................. 11

1.6 Version with protection class IP55 / IP66 .......................................................... 12

2 ASSEMBLY AND INSTALLATION ....................................................................................... 13

2.1 Installation and assembly .................................................................................. 13

2.1.1 Overview of the PROFIBUS DP modules ............................................................... 15

2.1.2 Installing the Customer Unit SK CU4-PBR ............................................................. 16

2.1.3 Installing the SK TU4-PBR-… technology unit ........................................................ 17

2.2 Electrical connection .......................................................................................... 19

2.2.1 Cable gland............................................................................................................. 19

2.2.2 Control connections ................................................................................................ 20

2.2.3 Configuration .......................................................................................................... 27

3 DISPLAYS AND DIAGNOSIS................................................................................................ 29

3.1 LED displays ...................................................................................................... 29

3.1.1 Device-specific display versions ............................................................................. 29

3.1.2 Signal status LEDs ................................................................................................. 31

3.2 RJ12 Diagnostic socket ..................................................................................... 34

4 COMMISSIONING .................................................................................................................. 36

4.1 GSD file ............................................................................................................. 36

4.2 Hardware configuration: Configuration of the PROFIBUS DP Technology Unit 36

4.2.1 DP slave slot assignment ....................................................................................... 37

4.2.2 Definition of PPO types ........................................................................................... 38

4.2.3 Timeout monitoring ................................................................................................. 40

5 PARAMETERISATION .......................................................................................................... 41

5.1 Parameterisation of frequency inverter SK 200E .............................................. 41

5.1.1 Basic parameters (P100) ........................................................................................ 41

5.1.2 Control clamp parameter (P400) ............................................................................. 42

5.1.3 Supplementary parameters (P500) ......................................................................... 44

5.1.4 Information parameters (P700) ............................................................................... 48

5.2 Parameterisation of the bus module (SK CU4-… or SK TU4-…) ...................... 50

5.2.1 BUS module standard parameters (P150) .............................................................. 50

5.2.2 BUS module information parameters, general (P170) ............................................ 51

5.2.3 Module information parameters specific to the bus (P180) ..................................... 54

6 ERROR MONITORING AND ERROR MESSAGES .............................................................. 55

6.1 Error monitoring ................................................................................................. 55

6.2 Error messages ................................................................................................. 56

6.2.1 Table of possible error messages (caused by the bus) in the frequency inverter ... 56

6.2.2 Table of possible error messages in the bus module .............................................. 57

6 BU 0220 GB-0912

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

7.2.2 The status machine ................................................................................................. 66

7.2.3 Parameter area (Parameter code value PKW) ........................................................ 68

7.3 Example telegrams ............................................................................................. 72

7.3.1 Switch-on disabled → Standby ............................................................................... 72

7.3.2 Enable with 50% setpoint ........................................................................................ 74

7.3.3 Writing a parameter................................................................................................. 75

8 ADDITIONAL INFORMATION ................................................................................................ 76

8.1 Bus Configuration ............................................................................................... 76

8.1.1 Laying the PROFIBUS DP cable ............................................................................. 76

8.1.2 Cable material ......................................................................................................... 76

8.1.3 Cable layout and shielding (EMC measures) .......................................................... 77

8.1.4 Recommendations of the PROFIBUS users´ association ....................................... 78

8.2 Cable glands and shielding connections ............................................................ 79

8.2.1 Fixed connection (cable gland) ............................................................................... 79

8.2.2 Connection with M12 round plug connectors .......................................................... 80

8.2.3 Round plug connectors ........................................................................................... 80

8.3 PROFIBUS DP technology and protocol ............................................................ 84

8.3.1 Overview /Protocol architecture .............................................................................. 84

8.3.2 Device types ........................................................................................................... 85

8.3.3 Performance levels ................................................................................................. 87

8.3.4 Terminology (selection) ........................................................................................... 88

8.4 System bus ......................................................................................................... 94

8.5 Repairs ............................................................................................................... 95

9 INDEX ...................................................................................................................................... 96

10 KEYWORD INDEX ................................................................................................................ 98

BU 0220 GB-0912 7

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.

This PROFIBUS DP documentation contains supplementary descriptions concerning the PROFIBUS DP
options for the SK 200E frequency inverter series.

The description of other optional modules (e.g. CANopen) is dealt with in other supplementary documentation.
In order to set up communication with PROFIBUS DP, either an internal Customer Unit or an external

PROFIBUS DP Technology Unit (according to the particular application) must be installed and connected.

The PROFIBUS DP bus system
A large number of different automation devices can exchange data with frequency inverters using

PROFIBUS DP. 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 DP 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 standardised and 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.

8 Subject to technical amendments BU 0220 GB-0912

1 General information

1.1 Overview

Features of the PROFIBUS DP modules

 Electrically isolated bus interface
 Transfer rate: 12Mbit/s
 Easy connection, optionally via M12 round plugs or screw terminals
 Looping of the PROFIBUS DP via the module
 Integrated bus terminating resistor (switchable)
 PROFIBUS DP-specific status indication with 2 LEDs on the internal (Customer Unit) and external

(Technology Unit) technology option

 DEVICE or FI-specific status indication with 2 LEDs on the internal (Customer Unit) and external

(Technology Unit) technology option

 PROFIBUS DP basic functionality as per DP-V0
 Acyclic data traffic as per DP-V1
 Up to four 24V inputs and two 24V outputs are integrated into the bus module
 Direct connection of up to 4 sensors and 2 activators via M12 round plug connectors on the

SK TU4-PBR-M12(-C) version. Visualisation of signal status via LEDs

 Transmission and reading of process and parameter data
 PROFIBUS DP Gateway solution → up to 4 frequency inverters can be connected to a

PROFIBUS DP module

 Up to 122 PROFIBUS DP modules can be connected to the bus. This enables the operation of up to

488 frequency inverters on one bus.

 Automatic detection of baud rate and PPO type by the PROFIBUS DP module
 "Simultaneous" access by up to 4 PROFIBUS DP masters (1 x DPM1 and up to 3 x DPM2) possible.

The DPM2 masters do not need to be permanently connected to the PROFIBUS DP network for
communication.

 Interface (RS232/RS485) for parameter access by means of the SK PAR-3H manual control unit or

NORDCON software via RJ12 connector (Except for SK CU4-PBR. Here parameter access via the
SK 2xxE frequency inverter is possible)

 Available as versions for installation in the inverter (IP20) or in a separate housing (optionally

IP55 / IP66)

1.2 Delivery

Check the equipment immediately after delivery/unpacking for transport damage such as deformation or
loose parts.

If there is any damage, contact the carrier immediately and carry out a thorough assessment.

Important! This also applies even if the packaging is undamaged.

BU 0220 GB-0912 Subject to technical amendments 9

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 8.2 "Cable glands and shielding connections")
Matching RJ12 to SUB-D9 adapter cable to connection to a PC
ParameterBox: SK PAR-3H, ParameterBox, plain text LCD display

1.4 Certifications

1.4.1 European EMC Directive

If the SK 2xxE frequency inverter or its options are installed according to the
recommendations in this instruction manual, it meets all EMC directive
requirements, as per the EMC product standard for motor-operated systems
EN 61800-3. (see also Section 8.1.3 "Cable layout and shielding (EMC
measures)")

1.4.2 RoHS compliance

SK 200E series frequency inverters or their options are designed to be RoHS
compliant according to Directive 2002/95/EEC

10 Subject to technical amendments BU 0220 GB-0912

1.5 Type code / Optional BUS modules

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.

Optional internal

customer unit, SK CU4-…

Optional external

technology unit, SK TU4-…

BUS = Bus module or I/O extension

1 General information

BU 0220 GB-0912 Subject to technical amendments 11

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE

NOTE

The modules for the IP66 design are identified by an additional "-C" and are modified
according to the following special measures!

NOTE

For all versions, care must be taken that the cable and the cable gland are carefully
matched. This is essential to ensure that the required protection class is maintained.

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. In order to

differentiate the protection classes, modules with protection class IP66 are given an extra "-C" (coated 
coated PCBs) in their type designation.

e.g. SK TU4-PBR-C

IP55 version:
The IP55 version of the external technology units is the standard version. Both versions (inverter-mounted –

as a supplement to the frequency inverter or wall mounted on the wall bracket) are available.

IP66 version:
In contrast to the IP55 version the IP66 version is a modified option. With this design, both versions

(inverter-mounted or wall-mounted) are also available. The modules available for the IP66 version (adapter
units, technology units and customer units) have the same functionalities as the corresponding modules for
the IP55 version.

Special measures:

Impregnated PCBs, coated housing
Diaphragm valve for pressure compensation on temperature changes.
Low pressure test

 A free M12 screw connection is required for low pressure testing. After successful testing, a

diaphragm valve is inserted here. This screw connection is therefore no longer available for
a cable gland.

12 Subject to technical amendments BU 0220 GB-0912

2 Assembly and installation

SK TI4-… with integrated technology unit

SK CU4-…

SK 200E with external technology unit SK TU4-...

and BUS connection module SK T14-TU-BUS

SK TIE4-WMK-TU

with BUS connection module SK T14-TU-BUS and

external technology unit SK TU4-... or SK TU4-...-M12

Optional internal

customer units, SK CU4-…

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.

The internal technology modules (Customer Unit, SK CU4-...) – designated as the customer unit – are
integrated into the connection unit of the SK 2xxE. Electrical connection to the SK 2xxE is made via the
internal system bus. The connection to external peripheral devices is made via screw terminals. The use of the
optionally available 4 or 5 pin M12 round plug connector, installed in the connection unit of the SK 2xxE,
provides a possible interface for connection to the field bus. A maximum of one customer interface (including
any 24V module) can be installed in the SK 2xxE frequency inverter.

BU 0220 GB-0912 Subject to technical amendments 13

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE

NOTE

Modules should not be inserted 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). However, a maximum cable length of 30m
should not be exceeded.

The external technology units (SK TU4-...(-M12) cannot be operated without the BUS
connection unit (SK T14-TU-BUS)!

NOTE

Only one field bus module (e.g. SK CU4-PBR or. SK TU4-PBR) can be connected to a
single system bus.

Optional external

technology unit, SK TU4-…

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. 4 or 5 pin M12 round plug
connectors (for installation in the BUS connection unit SK TI4-TU-BUS) are available as an option for
connection of the field bus cable. The external modules are also available as a version with integrated M12
round plug connectors (SK TU4-xxx-M12). These enable the connection of up to 4 digital inputs and 2 digital
outputs.

14 Subject to technical amendments BU 0220 GB-0912

2.1.1 Overview of the PROFIBUS DP modules

Bus Module

Description

Data

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.

Protocol:
DP-V0 (cyclical data traffic)
DP-V1 (acyclic data traffic)
Baud rate:
up to 12 MBaud
Connection:
16-terminal screw terminal bar
2x digital inputs:
Low: 0-5V, High: 11-30V
System bus

Profibus module *)

SK TU4-PBR(-C)

Part No. 275281100 (IP55)
Part No. 275281150 (IP66)

This option enables control of the SK 2xxE via
PROFIBUS DP.

This option is installed externally to the frequency
inverter.

According to the installation location, at least one
"BUS connection unit"* is required.

Protocol:
DP-V0 (cyclical data traffic)
DP-V1 (acyclic data traffic)
Baud rate:
up to 12 MBaud
Connection:
36 pin spring terminal bar of the

“BUS connection unit” *

4x digital inputs:
Low: 0-5V, High: 11-30V
2x Digital outputs:
0/24V
System bus

Profibus module with M12 *)

SK TU4-PBR-M12(-C)

Part No. 275281200 (IP55)
Part No. 275281250 (IP66)

This option enables control of the SK 2xxE via
PROFIBUS DP.

This option is installed externally to the frequency
inverter.

According to the installation location, at least one
"BUS connection unit"* is required.

As SK TU4-PBR, but with:
6x M12 socket for the connection

of up to 4 sensors and 2
actuators via 5 pin M12 round
plug connectors (A coded)

Connection unit for TU4

SK TI4-TU-BUS

Part No. 275280000 (IP55)
Part No. 275280500 (IP66)

The connection unit is always required in order to
use an external technology unit (SK TU4-...). This
implements the mechanical and electrical
connection of the Technology Unit to the SK 2xxE
or the wall-mounting kit.

Connection:
36 pin spring terminal bar
36x 2,5mm2
AWG 26-14
Spring terminals

TU4 Wall-mounting kit

SK TIE4-WMK-TU

Part. No. 275274002

With the wall mounting kit, a technology unit can be
used/installed separately from the SK 2xxE.

*)

in order to use the TU4 modules, a suitable SK TI4-TU-BUS connection unit must always be available!

2 Assembly and installation

BU 0220 GB-0912 Subject to technical amendments 15

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE

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.
This must be mounted directly in the connection unit of the SK 2xxE frequency inverter.

SK TI4-… with integrated technology unit

SK CU4-PBR

internal customer unit SK CU4-PBR

Bag enclosed with internal customer unit

Function

Terminal label

Cable colour

Power supply

(between frequency inverter and customer unit)

44

24V

brown

40

GND

blue

System bus

77

SYS+

black

78

SYS-

grey

NOTE

Set the termination resistors of the system bus!

see Section 2.2.3 "Configuration")

2.1.2 Installing the Customer Unit SK CU4-PBR

The installation of customer units is carried out in the connection unit SK T14-…of the SK 2xxE underneath the
control terminal bar. Fastening is by means of the terminal bar of the frequency inverter and two M4x20 screws
(bag enclosed with the customer unit). Only one customer unit per FI is possible!

The pre-assembled cables for connection to the frequency inverter (SK 2xxE) are also included in the bag
enclosed with the customer unit. Connections are made according to the following table:

16 Subject to technical amendments BU 0220 GB-0912

2 Assembly and installation

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).

NOTE

The IP protection class is not complied with if the screw connections are not connected
properly. In this case, the module may be damaged by the entry of dirt or moisture.

136

Flan

External BUS connection unit =

SK TI4-TU-BUS

2.1.3 Installing the SK TU4-PBR-… technology unit

Together with the BUS connection unit SK TI4-TU-BUS(-C) the technology unit SK TU4-PBR-…(-C) forms a
stand-alone functional unit. This can be attached to the SK 2xxE frequency inverter or installed separately by
means of the optional SK TIE4-WMK-TU wall-mounting kit.

2.1.3.1 Dimensions of the SK TI4-WMK-TU wall-mounting kit

The optional wall-mounting kit has the following dimensions.

2.1.3.2 BUS connection unit SK T14-TU-BUS(-C)

Various cable glands closed by caps are located on the sides of the BUS
connection unit.

The following holes are available as cable inlets:

 2 x 1 M20 x 1.5 (on sides)
 4 M16 x 1.5 (underside)
 2 M25 x 1.5 (rear side, without caps)

The transparent screw-on cover (M20 x 1.5) on the upper right serves as access to the diagnostic interface
(RJ12 socket, interface RS232/RS485). The top left screw connection is a blank screw cap.

BU 0220 GB-0912 Subject to technical amendments 17

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE

Mounting the external technology unit on the SK 200E

Technology unit SK TU4-PBR (-M12) BUS connection unit SK T14-TU-BUS

Bus Technology Unit with wall-mounting kit

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. Remove the printed circuit board (with terminal
bar) from the BUS connection unit.

4. Install the SK T14TUBUS (with adhered seal) on
the SK 200E using the 4 enclosed bolts.

5. Replace the printed circuit board (See point 3)
and carry out the electrical connections.

6. Fit and screw on the SK TU4 module.

2.1.3.4 Wall-mounting the SK TI4-TU-BUS

The screw fittings (except for anchoring screws) and
seals required for installation are enclosed with the
modules or are fitted to the intended locations.

The connecting cable between the technology unit
and the SK 2xxE should not be longer than 30m.

1. Mount the SK T14-TU-BUS connecting unit with
adhered seal on the wall-mounting kit. To do this:
Insert the 2 x cheese-head screws (enclosed with
wall-mounting kit) into the (countersunk) holes
from the outside and with the 2 x bolts (enclosed
with the wall-mounting kit) securely screw both
components together from the inside (BUS
connection unit).

2. Make a suitable cable connection between the technology unit and the frequency inverter. Take care that
there is appropriate screw fitting and sealing of the modules. The cable sets enclosed with the BUS
connection unit are not used.

3. Fit and screw on the SK TU4 module.

18 Subject to technical amendments BU 0220 GB-0912

2 Assembly and installation

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.

Dangerous voltages can be present at the motor connection terminals of the frequency inverter
even when the inverter is switched off. Always use insulated screwdrivers on these terminal fields.

Ensure that the input voltage source is not live before setting up or changing connections to the
unit.

Make sure that the inverter and motor are specified for the correct supply voltage.

Outgoing cable, fixed
connection e.g. for system
bus or 24V supply

Incoming cable, fixed
connection e.g. for system
bus or 24V supply

Cable gland for system bus cable pair
and 24V supply for direct attachment
to SK 200E

No function,
do not use

Diagnostic access
RJ 12 socket

Cable gland for system bus cable pair
and 24V supply for direct attachment
to SK 200E

M16 cable gland or installation of M12 round plug connection for:

 incoming and outgoing PROFIBUS DP cable
 24V and 24V (for DO) supply
 System bus
 I/O peripherals: sensors and actuators

2.2 Electrical connection

2.2.1 Cable gland

Both the SK 200E connection unit and the bus module provide extensive facilities for the connection of all the
required cables. The cables may enter the housing via cable glands and be connected to the terminal bar.
However, appropriate round plug connections (e.g.: M12 round plug connectors in M16 cable glands) may be
fitted in order to provide a plug-in solution.

BU 0220 GB-0912 Subject to technical amendments 19

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE

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

NOTE

The PROFIBUS DP is already installed in the customer unit with voltage isolation from the
other signal connections.

In case of EMC problems, voltage separation of the field bus supply, the digital inputs and
system bus interface and for the external technology unit also for the two additional digital
outputs should be provided.

NOTE

The cable shielding must be connected to the functional earthing 1 (usually the
electrically conducting mounting plate) in order to prevent EMC interference in the
device.

In order to achieve this, for PROFIBUS DP connections it is mandatory that the metallic
metric EMC screws are used for the connection of the PROFIBUS DP shielding lead to the
frequency inverter or the housing of the technology unit. This ensures a wide area
connection of the functional earthing.

1

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.

Within the terminal box (unshielded cable section) the data cables (e.g. PROFIBUS DP, system bus) must be
installed as short as possible and of equal length. Associated data cables (e.g.: Sys+ and Sys-) must be
twisted.

In systems, electrical equipment is usually connected to a functional earth. This serves as a means to dissipate leakage

and interference currents in order to ensure EMC characteristics and must therefore be implemented according to high
frequency technology aspects.

20 Subject to technical amendments BU 0220 GB-0912

2.2.2.1 Control connections SK CU4-PBR

NOTE

Looping of the 24V supply voltage (terminals 40/44) is possible, however a maximum
current load of 2A for the SK CU4-PBR must not be exceeded.

46

81

82

47

83

46

81

82

44

40

78

77

C2

C1

40

44

PBR A

PBR B

PBR A

PBR B

Sys+

Sys-

GND B

GND B

VP +5V

Incoming
PROFIBUS DP cable

Outgoing
PROFIBUS DP cable

Connection of the 24V power
supply from the SK 2xxE

System bus connection
from the SK 2xxE

Potential level: System bus

Potential level: Field bus

24V

GND

Connection to the

terminal block of the SK CU4-PBR

SK CU4-

SK 2xxE-

The terminal bar of the customer unit SK CU4-PBR is divided into two potential levels.

2 Assembly and installation

Connection of up to 2 sensors is made on the terminal bar (terminals C1 and C2).

BU 0220 GB-0912 Subject to technical amendments 21

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE

Terminal/
Name

Function

Data

Description / wiring suggestion

Parameter

44 24V

24V supply

(Module, field and system
bus level)

24VDC ±20%
≈ 90mA

reverse polarity protected
max. permissible current

load: 2A

Connection of supply voltage for
module and 24V source for supply
of the digital inputs (DIN1 and
DIN2)

-

40 GND / 0V

Reference potential
for digital signals

-

C1 DIN1

Digital input 1

(I/O PROFIBUS DP DIN1)

Low 0V ... 5V
High 15V ... 30V
Ri = 8.1k
Input capacitance 10nF
Scan rate 1 ms

Each digital input has a reaction
time of 1ms.

Inputs as per EN 61131-2 Type 1
P174

C2 DIN2

Digital input 2

(I/O PROFIBUS DP DIN2)

P174

77 Sys H

System bus
data cable +

System bus
interface

-

78 Sys L

System bus
data cable -

-

40 GND / 0V

Reference potential
for digital signals

24VDC ±20%
≈ 90mA

reverse polarity protected
max. permissible current

load: 2A

Connection of supply voltage for
module and 24V source for supply
of the digital inputs (DIN1 and
DIN2)

-

44 24V

24V supply

(Module, field and system
bus level)

­Potential isolation

82 PBR B

(incoming)

Bus +
(red lead)

RxD/TxD-P

RS485 transfer

The use of twisted, shielded two­conductor cable / Type A Profibus
cable is highly recommended

-

81 PBR A

(incoming)

Bus ­(green lead)

RxD/TxD-N

-

46 GND/
0V BUS

Data ground bus

-

83 RTS

Ready to send

-

47 VO/
5V BUS

+5V bus supply
voltage

Internal Profibus voltage
supply

Note: Must not be used externally!

-

82 PBR B

(outgoing)

Bus
(red lead)

RxD/TxD-P

RS485 transfer

The use of twisted, shielded two­conductor cable / Type A Profibus
cable is highly recommended

-

81 PBR A

(outgoing)

Bus
(green lead)

RxD/TxD-N

-

46 GND/
0V BUS

Data ground bus

-

Control connection details

22 Subject to technical amendments BU 0220 GB-0912

2 Assembly and installation

Field bus level
PROFIBUS DP

System bus level and digital inputs

Digital outputs

24V

PB B

IN

PB A

IN

0V-B

RTS

24V

(as 1)

24V

(as 1)

0V

GND

0V

GND

DIN 1

0V

GND

24V

(as 1)

DIN 2

0V

GND

24V

(as 1)

24V 2

DO 1

0V 2

1 3 5 7 9

11

13

15

17

19

21

23

25

27

29

31

33

35 2 4 6 8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

24V

(as 1)

PB B
OUT

PB A

OUT

0V-B

(as 8)

+5V B 24V

(as 1)

Sys +

Sys -

0V

GND

DIN 3

0V

GND

24V

(as 1)

DIN 4

0V

GND

24V

(as 1)

0V 2

DO 2

0V 2

SK 205E…-Connection unit (SK TI4…)

SK TU4-PBR…-Connection unit (SK TI4-TU-BUS)

Voltage
Source

24V DC

PROFIBUS
Subscriber

X-1

PROFIBUS
Subscriber

X+1

Terminal block of the bus Adapter Unit
SK TI4-TU-BUS and assignment of functions

Potential level: Field bus

Potential level: System bus

Potential level: DOs

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. Terminals 1 and 2 must only be used to supply sensors. Looping of a 24V supply must
not be performed via these terminals (1 and 2).

A separate power source can be used for the supply of the DOs. However, it is possible to implement the
supply of the DOs by bridging 24V 2 and 0V 2 to one of the terminals of the system bus level (24V and 0V).
However, in this case it should be noted that there is an increased risk of introducing interference into the bus
cables.

Connection of the sensors and actuators is made via the terminal bar. Alternatively, the SK TU4-PBR-M12
enables the connection of the digital I/Os via the M12 round plug connector (5 pin socket, A-coded) mounted
on the front.

Double use of the inputs via the terminal bar and the M12 round plug connector must be avoided.

Connection example: SK TU4-PBR to SK 205E

BU 0220 GB-0912 Subject to technical amendments 23

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.
Terminals 1/2 are preferentially for use with sensors and maximum loads of 500mA.

Wiring of the M12-plug
connector to
SK TU4-…-M12

Coupling detail

Pin numbering

Details of the M12 connections of the SK TU4-…-M12

The special wiring of the M12 round plug connector enables the connection of both single and double sensors,
which are equipped with normal M12 system connectors in the standard sensor/actuator configuration.

With the use of M12 round plug
connectors, the terminal bar
connectors for the digital inputs
(Terminals 19, 20, 25, 26) must not be
used.

24 Subject to technical amendments BU 0220 GB-0912

Control connection details

Terminal/
Name

Function

Data

Description / wiring suggestion

Parameter

1 24V

2

24V supply

(Module, field and system
bus level)

24VDC ±20%
≈ 90 mA

reverse polarity protected

Max. permissible current
load: 500mA

Connection of the sensor supply
voltage

via DC/DC converter to Terminal

11.

-

Potential isolation

3 PB B

(incoming)

4

(outgoing)

PBR B
Bus + (red lead)

RxD/TxD-N

RS485 transfer

The use of twisted, shielded two­conductor cable / Type A Profibus
cable is highly recommended

-

5 PB A

(incoming)

6

(outgoing)

PBR A
Bus - (green lead)

RxD/TxD-P

-

7 0V-B

8

Data ground bus

Reference potential for
internal Profibus voltage
supply

-

9 RTS

Ready to send

-

10 5V B

5V bus supply
voltage

Internal Profibus voltage
supply

Note: Must not be used externally!

-

Potential isolation

11 24V

12

13

24V supply

(Module, field and system
bus level)

As for terminal 1
However, max.

permissible current load:
3A

Connection of supply voltage for
module and 24V source for supply
of the digital inputs (DIN1 to DIN4)

-

15 0V

17

18

GND
Reference potential
for digital signals

-

14 Sys +

System bus
data cable +

System bus
interface

-

16 Sys -

System bus
data cable -

-

19 DIN1

Digital input 1

(I/O Profibus DIN1)

Low 0V ... 5V
High 15V ... 30V
Ri = 8.1k

Input capacitance 10nF
Scan rate 1 ms

Inputs as per EN 61131-2
Type 1

Each digital input has a reaction
time of 1ms.

P174

20 DIN3

Digital input 3

(I/O Profibus DIN3)

P174

2 Assembly and installation

BU 0220 GB-0912 Subject to technical amendments 25

PROFIBUS DP – Supplementary manualfor NORD Frequency Inverter SK 2xxE

Terminal/
Name

Function

Data

Description / wiring suggestion

Parameter

21 0V

22

GND
Reference potential
for digital signals

As for terminal 15

Connection of supply voltage for
module and 24V source for supply
of the digital inputs (DIN1 to DIN4)

-

23 24V

24

24V supply

(Module, field and system
bus level)

As for terminal 1
However, max.

permissible current load:
3A

-

25 DIN2

Digital input 2

(I/O Profibus DIN2)

Low 0V ... 5V
High 15V ... 30V
Ri = 8.1k

Input capacitance 10nF
Scan rate 1 ms

Inputs as per EN 61131-2
Type 1

Each digital input has a reaction
time of 1ms.

P174

26 DIN4

Digital input 4

(I/O Profibus DIN4)

P174

27 0V

28

GND
Reference potential
for digital signals

As for terminal 15

Connection of supply voltage for
module and 24V source for supply
of the digital inputs (DIN1 to DIN4)

-

29 24V

30

24V supply

(Module, field and system
bus level)

As for terminal 1
However, max.

permissible current load:
3A

-

Potential isolation

31 24V2

24V supply
of digital outputs

24VDC -/+20%
Up to 1A, according to

load
reverse polarity protected

Supply voltage connection for
digital outputs (DO1 and DO2)

If necessary, bridge to 24V terminal

-

32 0V2

GND 2
Reference potential
for digital outputs

Ground for digital outputs (DO1
and DO2)

If necessary, bridge to 0V terminal

-

33 DO1

Digital output 1

(I/O Profibus DO1)

Low = 0V
High: 24V

Rated current: 500mA
each

The digital outputs should be used
with a separate 24V supply

P175

34 DO2

Digital output 2

(I/O Profibus DO2)

P175

35 0V2

36

GND 2
Reference potential
for digital outputs

Ground for digital outputs (DO1
and DO2)

If necessary, bridge to 0V terminal

-

26 Subject to technical amendments BU 0220 GB-0912

2 Assembly and installation

E.g.: SK CU4-PBR

E.g.: SK 200E

PROFIBUS DP module (view of DIP switch)

SK 200E (internal view)

System bus

termination resistor

Field bus (PROFIBUS DP)
termination resistor

System bus
termination resistor

Customer unit SK CU4-PBR

Technology unit SK TU4-PBR

DIP switch 3 + 8 part

BUS termination

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).

Addressing

Note:

 PROFIBUS DP - Address: Setting only via DIP switch in binary code
 Permissible address range: 3 … 125 → other addresses result in an error message
 Address changes: only become effective after switching the BUS module off and

on again

Termination resistor

The termination of the BUS system is made for the first and last participants by connecting the relevant
termination resistors (DIP switch).

BU 0220 GB-0912 Subject to technical amendments 27

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".

Area

Meaning

DIP Switch

ON - OFF

Configuration

example

Addressing

No significance

-

-

Address bit 6

26 = 64 0

Address bit 5

25 = 32 0

Address bit 4

24 = 16 0

Address bit 3

23 = 8 8

Address bit 2

22 = 4 4

Address bit 1

21 = 2 2

Address bit 0

20 = 1 0

Example address:

14

BUS

termination

PB Term.

OFF *

PB Term.

OFF *

S-Bus Term.

ON

* in order to terminate the PROFIBUS DP, both DIP switches must be set to "PB Term".

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". The
PROFIBUS DP subscriber is not a final subscriber. The system bus only includes the frequency inverter and
the PROFIBUS DP module. The termination resistor for the system bus is to be set at the frequency inverter.
The DIP switches on the PROFIBUS DP module must be set as follows:

28 Subject to technical amendments BU 0220 GB-0912

3 Displays and diagnosis

RJ12

LEDs
Potis

RJ12

LEDs
Potis

PROFIBUS DP module SK CU4-PBR

status LEDs

PROFIBUS DP module unit SK TU4-PBR-M12 with

SK TI4-TU-BUS and SK TIE4-WMK-TU
Status LEDs and viewing window (transparent screw-on

cover) for RJ12 diagnostic interface

Frequency inverter SK 200E
viewing window (transparent screw-on cover) for

diagnostic interface RJ12, status LEDs, potentiometer

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).

3.1 LED displays

Both the SK 200E frequency inverter and the CANopen modules provide LED status and diagnostic displays to
indicate the various statuses.

A differentiation into 3 categories is made

 Module or module-specific displays (S and E or DS and DE)
 Displays specific to PROFIBUS DP ((BS)BR and BE)
 Status displays for the additional digital I/Os of the module (D1/2 or DI1...4 and DO1/2)

The possible displays differ according to the device.

3.1.1 Device-specific display versions

3.1.1.1 frequency inverter SK200E

LED S/E
The double LED S/E indicates the operating status of the

frequency inverter by change of colour and different flashing
frequencies. A device error is indicated by cyclic red flashing of
the LED. The frequency of the flashing signals corresponds to
the error number (Manual BU 0200).

LEDs BS and BE
The dual LEDs BS (BUS State) and BE (BUS Error) indicate

the status of the system bus communication module. Various
bus communication errors are indicated by means of different
flashing frequencies.

A detailed description of the LED displays of the frequency
inverter can be found in the main manual (BU0200).

BU 0220 GB-0912 Subject to technical amendments 29

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.

LEDs D1 and D2
The single colour LEDs D1 (DIN 1 (Digital input 1)) and D2 (DIN 2 (Digital input 2)) indicate the signal status of the

digital inputs of the PROFIBUS DP module. The corresponding LED lights up in case of a High signal.

A detailed description of the LED displays for this module can be found in Section 3.1.2 "Signal status LEDs".

3.1.1.3 Technology unit SK TU4-PBR (-M12)

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.

LEDs DI1 to DI4 and DO1 and DO2
The single colour LEDs DI1 (DIN 1 (digital input 1)) to DI4 (DIN 4 (digital input 2)) and DO1 (DOUT 1 (digital

output 1) and DO2 (DOUT 2 (digital output 2)) indicate the signal status of the digital inputs or outputs of the
PROFIBUS DP module. The corresponding LED lights up in case of a High signal.

These LEDs are only available in the PROFIBUS DP module SK TU4-PBR-M12.

A detailed description of the LED displays for this module can be found in Section 3.1.2 "Signal status LEDs".

30 Subject to technical amendments BU 0220 GB-0912