NORD BU0290 User Manual

GB

BU 0290

PROFINET® bus module

for NORD frequency inverter SK 200E

PROFINET bus module for NORD frequency inverters SK 200E Safety information

N O R D 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.

Drive power converters with the CE mark meet the requirements of
the Low Voltage Directive 2006/95/EEC. The harmonized standards
stated in the Declaration of Conformity are used for the drive power
converters.

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 the safety
functions which are described and for which they have been
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 converters 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 connections

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 information is contained
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 relevant
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!

2 BU 0290 GB-4312

Documentation

Designation of
previous issues

Software
Version

Remarks

BU 0290 GB, October 2012
Part No. 607 2902 / 4312

V 1.1 R0

First issue

NOTE

This supplementary operating manual is only valid in conjunction with the operating manual
supplied for the respective frequency inverter (Manual BU0200).

Designation: BU 0290 GB
Part No.: 607 29 01
Device series: PROFINET IO for SK 200E
Device types: SK TU4-PNT(-C) with SK TI4-TU BUS

Version list

Publisher

Getriebebau NORD GmbH & Co. KG

Rudolf-Diesel-Str. 1  D-22941 Bargteheide  http://www.nord.com/
Tel.: [phone] / 289-0  Fax [phone]

Table of Contents

Intended use of the frequency inverter

Compliance with the operating instructions is essential for fault-free operation and the

acceptance of any 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. Use of SK TU4-EPNT(-C) technology units is also possible
with the SK 500E series. 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 (commencement of the intended use) is not permitted until it has been ensured
that the machine complies with the EMC Directive 2004/108/EEC and that the conformity of
the end product meets the Machinery Directive 2006/42/EEC (observe EN 60204).

 Getriebebau NORD GmbH & Co. KG, 2012

BU 0290 GB-4312 3

PROFINET bus module for NORD frequency inverters SK 200E

1 GENERAL ................................................................................................................................ 6

1.1 The bus system ................................................................................................... 6

1.2 Delivery ................................................................................................................ 7

1.3 Scope of supply ................................................................................................... 7

1.4 Certifications ........................................................................................................ 7

1.4.1 European EMC Directive .......................................................................................... 7

1.4.2 RoHS compliance ..................................................................................................... 7

1.5 Type code / Optional BUS modules .................................................................... 8

1.6 Version with protection class IP55 / IP66 ............................................................ 9

2 ASSEMBLY AND INSTALLATION ....................................................................................... 10

2.1 Installation and assembly .................................................................................. 10

2.1.1 Overview of PROFINET IO modules ...................................................................... 11

2.1.2 Installing the SK TU4-PNT-... technology unit......................................................... 12

2.2 Electrical connection .......................................................................................... 14

2.2.1 Cable gland............................................................................................................. 14

2.2.2 Control connections ................................................................................................ 15

3 DISPLAYS AND DIAGNOSIS................................................................................................ 19

3.1 LED displays ...................................................................................................... 19

3.1.1 Device-specific display versions ............................................................................. 19

3.1.2 Signal status LEDs ................................................................................................. 21

3.2 RJ12 Diagnostic socket ..................................................................................... 23

4 COMMISSIONING .................................................................................................................. 25

4.1 Cabling ............................................................................................................... 25

4.1.1 Topology ................................................................................................................. 25

4.1.2 EMC ........................................................................................................................ 25

4.2 Parameter settings of the frequency inverter .................................................... 26

4.2.1 Parameter settings of the SK 200E frequency inverter ........................................... 26

4.2.2 Parameter settings of the SK 500E frequency inverter ........................................... 26

4.3 Configuration in the Bus system (example SIMATIC Manager) ........................ 27

5 COMMUNICATION ................................................................................................................ 29

5.1 Process data ...................................................................................................... 29

5.1.1 Process data structure ............................................................................................ 29

5.1.2 Control word ........................................................................................................... 31

5.1.3 Status word ............................................................................................................. 32

5.1.4 FI Status Machine ................................................................................................... 33

5.1.5 Setpoint and actual values ...................................................................................... 35

5.1.6 Example for switching the frequency inverter on and off ........................................ 36

5.1.7 Timeout monitoring ................................................................................................. 36

5.2 Parameter transfer ............................................................................................. 37

5.2.1 Function of PROFINET Records ............................................................................. 37

5.2.2 Data records ........................................................................................................... 38

5.2.3 Data format ............................................................................................................. 39

5.2.4 Examples ................................................................................................................ 42

6 PARAMETERS ...................................................................................................................... 46

6.1 Parameters for frequency inverter SK200E ....................................................... 46

6.1.1 Basic parameters (P1xx) ........................................................................................ 46

6.1.2 Control terminal parameter (P4xx) .......................................................................... 47

6.1.3 Supplementary parameters (P5xx) ......................................................................... 49

6.1.4 Information parameters (P7xx) ............................................................................... 53

6.2 Parameterisation of the bus module (SK TU4-…) ............................................. 55

6.2.1 BUS module standard parameters (P15x) .............................................................. 55

6.2.2 Parameters specific to PROFINET IO modules (P16x) .......................................... 56

6.2.3 BUS module information parameters, general (P17x) ............................................ 57

6.2.4 Module information parameters specific to the bus (P18x) ..................................... 60

4 BU 0290 GB-4312

Table of Contents

7 ERROR MONITORING AND ERROR MESSAGES ............................................................... 61

7.1 Error monitoring .................................................................................................. 61

7.1.1 Error monitoring details ........................................................................................... 61

7.1.2 PROFINET error monitoring .................................................................................... 62

7.2 Error messages .................................................................................................. 63

7.2.1 Table of possible error messages (caused by the bus) in the frequency inverter ... 63

7.2.2 Table of possible error messages in the bus module .............................................. 64

8 ADDITIONAL INFORMATION ................................................................................................ 65

8.1 Bus Configuration ............................................................................................... 65

8.1.1 Layout of the PROFINET IO bus cable ................................................................... 65

8.1.2 Cable material ......................................................................................................... 65

8.1.3 Cable layout and shielding (EMC measures) .......................................................... 65

8.2 Cable glands and shielding connections ............................................................ 66

8.2.1 Fixed connection (cable gland) ............................................................................... 66

8.2.2 Connection with M12 round plug connectors .......................................................... 67

8.2.3 Round plug connectors ........................................................................................... 67

8.3 System bus ......................................................................................................... 70

8.4 Repairs ............................................................................................................... 71

9 INDEX ...................................................................................................................................... 72

9.1 Keyword Index: ................................................................................................... 72

9.2 Abbreviations used: ............................................................................................ 72

10 LISTINGS .............................................................................................................................. 73

10.1 List of illustrations ............................................................................................. 73

10.2 List of tables ..................................................................................................... 73

10.3 Keyword index .................................................................................................. 74

BU 0290 GB-4312 5

PROFINET bus module for NORD frequency inverters SK 200E

1 General

Modern field bus systems, microcontrollers and communication networks have had a great influence on
automation systems and have resulted in greater flexibility, availability and ultimately, also a reduction in
costs.

The widespread use of PC-based control only became possible with the availability of field bus systems.
With increasing control unit performance, the classic field bus ultimately became the limiting criterion for the
entire system. It was therefore an obvious step to adapt Ethernet technology, which provides high rates of
data transmission in IT applications, to the field of automation.

1.1 The bus system

As a physical transfer medium, PROFINET® transfers many years of experience with PROFIBUS-DP-V1 to
Fast Ethernet. In addition to the conventional open Ethernet communication TCP/IP it enables real time
communication of process data. PROFINET defines three communication classes, which provide different
levels of efficiency and functionality:

 TCP/IP or UDP/IP communication without real time capability
 Real time communication for process data (>1ms) RT
 Isochronous real time communication for synchronised process data  IRT

Features of the SK TU4-PNT(-C)

 PROFINET IO real time communication (RT=Real Time and IRT=Isochronous Real Time)
 Automatic address assignment via the IO controller using DCP (discovery configuration protocol)
 Switched Ethernet
 Autonegotiation (negotiation of transfer parameters)
 Autocrossover (Transmission and reception cables crossed over in the switch)
 Conforms with Class B, C
 PROFINET IO bus cable connection via RJ45 plug - connector
 Connection of I/Os and system bus via screw terminals and optionally via M12 round connectors
 Display of specific PROFINET IO status with 2 LEDs
 Specific DEVICE or FI status display with 2 LEDs
 Eight integrated 24V inputs and two 24V outputs
 Available as a version in a separate housing (optionally IP55 / IP66)
 An interface (RS232/RS485) via an integrated RJ12 socket is available for parameter access by

means of the manual control unit SK PAR-3H or via NORDCON software.

Performance

 Electrically isolated bus interface 500V

eff

 100Mbit/s data communication
 Full duplex transmission
 Transmission of a maximum of five setpoints or actual values to the frequency inverter
 Cyclic parameterisation (PPO 1 + 2) or acyclic parameterisation (Records)
 PROFINET Bus Gateway solution → up to 4 frequency inverters can be connected to a PROFINET

bus module

 Almost unlimited participants in the PROFINET system possible (limited by the controller)

6 Subject to technical amendments BU 0290 GB-4312

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.

1.3 Scope of supply

Standard version: SK TU4-PNT(-C) IP55 (optionally IP66)
Operating instructions as PDF file on CD ROM

including NORD CON, (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, plain text LCD display

1.4 Certifications

1 General

1.4.1 European EMC Directive

If the NORD 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

The bus options described here are designed to be RoHS compliant
according to Directive 2002/95/EEC

BU 0290 GB-4312 Subject to technical amendments 7

PROFINET bus module for NORD frequency inverters SK 200E

SK TU4-PNT (-C-M12-WMK-TU)

Wall mounting kit: for external technology units, TU4
M12 system connectors: only TU4, alternative to terminals (not for PROFINET)
IP protection class: Standard = IP55, C = „coated“ IP66
Option type: CAO = CANopen, PBR = Profibus, PNT = PROFINET

DEV = DeviceNet, IOE = I/O-extension

Option series: TU4 = external Technology Unit
CU4 = internal customer unit (not for PROFINET)

(...) Options, only implemented if required.

Optional external

technology unit, SK TU4-…(Examples)

1.5 Type code / Optional BUS modules

BUS = Bus module or I/O extension

8 Subject to technical amendments BU 0290 GB-4312

1.6 Version with protection class IP55 / IP66

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.

NORD SK 200E frequency inverters and the external additional modules are available in all sizes and
powers in the protection classes IP55 (standard) or IP66 (optional).

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-PNT-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.

1 General

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 connections is therefore no longer available
for a cable gland.

BU 0290 GB-4312 Subject to technical amendments 9

PROFINET bus module for NORD frequency inverters SK 200E

SK 200E with external technology unit SK TU4-…

and BUS connection module SK TI4-TU-BUS

SK TIE4-WMK-TU with BUS connection module SK TI4-TU-BUS

and external technology unit SK TU4-PNT

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-...) cannot be operated without the BUS connection unit
(SK TI4-TU-BUS)!

NOTE

Only one technology unit (SK CU4-... or SK TU4-...) can be connected to a system bus.

2 Assembly and installation

2.1 Installation and assembly

Only external technology units (Technology Units) are available for PROFINET IO. These are tailored to the
NORD SK 200E frequency inverter series.

These are used to connect SK 200E series speed regulated drive units to overriding automation systems via
the PROFINET IO field bus.

The technology units (Technology Unit, SK TU4-...) are externally attached to the SK 200E 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. The electrical connection to the SK 200E is made via the
internal system bus. Optionally, 4 or 5 pin M12 round connectors are available (for installation on the BUS
connection unit SK TI4-TU-BUS), which can be used for connection of the digital I/Os and the system bus
cables.

10 Subject to technical amendments BU 0290 GB-4312

2.1.1 Overview of PROFINET IO modules

Bus Module

Description

Data

PROFINET IO module*)

SK TU4-PNT(-C)

Part No. 275281115 (IP55)
Part No. 275281165 (IP66)

This option enables control of the SK 200E via
PROFINET IO.

This option is installed externally to the frequency
inverter.

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

Supported profile:
CoE
Baud rate:
up to 100 MBaud
Connection:
36 pin spring terminal bar
of the “BUS connection unit”*
8x Digital inputs:
 Low: 0-5V, High: 11-30V
2x Digital outputs:
0/24V
System bus

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 connection of the technology unit to
the SK 200E 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 200E.

*)

in order to use the TU4 modules, a suitable

SK TI4-TU-BUS connection unit must always be available!

2 Assembly and installation

Table 1 Overview of PROFINET IO modules

BU 0290 GB-4312 Subject to technical amendments 11

PROFINET bus module for NORD frequency inverters SK 200E

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 technology unit remote from the frequency inverter is possible with the
additional wall mounting kit SK TIE4-WMK-TU.

136

58

External BUS connection unit SK TI4-TU-BUS

2.1.2 Installing the SK TU4-PNT-... technology unit

Together with the BUS connection unit SK TI4-TU-BUS(-C) the technology unit SK TU4-PNT-…(-C) forms a
stand-alone functional unit. This can be attached to the SK 200E frequency inverter or installed separately by
means of the optional SK TIE4-WMK-TU wall-mounting kit.

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

The optional wall-mounting kit has the following dimensions.

Fig. 1 Wall-mounting kit SK TIE4-WMK-TU, dimensions

2.1.2.2 BUS connection unit SK TI4-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 upper left screw-on cover is not used.

12 Subject to technical amendments BU 0290 GB-4312

2 Assembly and installation

Technology unit SK TU4-PNT BUS Connection Unit SK TI4-TU-BUS

Mounting an external technology unit on the SK 200E (example)

Wall-mounting kit SK TI4-WMK-TU

Wall-mounting kit SK TI4-WMK-TU with field bus technology unit

2.1.2.3 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 TI4-TU-BUS with the enclosed seal on
the SK 200E using the 4 enclosed bolts.

5. Screw in both of the enclosed M25 to M12
reductions from the inside of the connection unit of
the frequency inverter. (Purpose: to avoid damage to the

internal wiring in the area of the junction of the
SK TI4-TU-...(connector unit for optional external modules) to the
SK TI4-… (frequency inverter connector unit))

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

7. Fit and screw on the SK TU4 module.

2.1.2.4 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 200E should not be longer than 30m.

1. Mount the SK TI4-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.

BU 0290 GB-4312 Subject to technical amendments 13

PROFINET bus module for NORD frequency inverters SK 200E

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:

 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.

Fig. 2 Cable gland on the BUS module / connection unit

14 Subject to technical amendments BU 0290 GB-4312

Specification

PROFINET IO

Max. baud rate 100 MBaud

Electrical isolation 500V

eff

Bus connection

2  RJ45

Bus termination

Performed automatically by the SK TU4-… technology unit

Cable

Ethernet CAT-5 or better

Max. cable length

100m between two Ethernet bus modules

Supply voltage

24V  20%, current consumption ≈ 100mA
Reverse polarity protected

Status display

4 LEDs

Device address

via the PROFINET IO controller or parameterisation

PE

Connection via plug pins under the 24V supply

Shield

The shields of the two RJ sockets are connected together and connected to PE with a
high resistance and capacitance.

Signal

Name

RJ45 Pin

TX+

Transmission Data +

1

TX-

Transmission Data -

2

RX+

Receive Data +

3

RX-

Receive Data -

6

Designation

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

Pin 1

Pin 8

2.2.2 Control connections

2.2.2.1 Field bus (PROFINET IO)

2 Assembly and installation

Table 2 Electrical specifications of the SK TU4-PNT

The field bus cable must only be connected to the two RJ45 sockets mounted on the front.

Table 3 RJ45 socket connections

2.2.2.2 Peripherals (system bus and IOs)

The PROFINET IO 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 (system bus) must be installed as short as
possible and of equal length. Associated data cables (e.g.: Sys+ and Sys-) must be twisted.

BU 0290 GB-4312 Subject to technical amendments 15

PROFINET bus module for NORD frequency inverters SK 200E

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

Digital inputs

System bus level and digital inputs

Digital outputs

24V DIN 5 DIN 6 0V 24V

(as

for 1)

24V

(as

for 1)

24V

(as

for 1)

0V

0V

DIN 1

0V

24V

(as

for 1)

DIN 2

0V

24V

(as

for 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

for 1)

DIN 7 DIN 8 0V 24V

(as

for 1)

24V

(as

for 1)

Sys +

Sys -

0V

DIN 3

0V

24V

(as

for 1)

DIN 4

0V

24V

(as

for 1)

24V 2

DO 2

0V 2

SK 205E... - bus connection unit (SK TI4)

SK TU4-ECT... - bus connection unit (SK TI4-TU-BUS)

Voltage

source

24V DC

NOTE

Looping of the 24V supply or GND is possible, however the maximum current load of 3A
must not be exceeded with the module.

Only adjacent terminals (e.g.: 11/12) may be used for looping.
Terminals 1/2 are preferentially for use with sensors and with maximum loads of 500mA.

1

Illustration of the terminal bar of the bus connection unit
SK TI4-TU-BUS with allocation of functions

Potential level: system bus

Potential level: system bus

Potential level: DOs

The double spring terminal bar is divided into 2 potential levels (system bus and digital outputs).
A separate power source should be used for the supply of the DOs. However, by bridging 24V 2 and 0V 2 to

one of the terminals of the system bus level (24V and 0V) it is possible to implement the supply of the DOs.
However, in this case it should be noted that there is an increased risk of introducing interference into the bus
cables.

Connection of up to 8 sensors and 2 actuators is made via the terminal bar.

Connection example: SK TU4-PNT to SK 200E

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.

16 Subject to technical amendments BU 0290 GB-4312

Control connection details

Terminal/
Designation

Function

Data

Description /
wiring suggestion

Parameter

1 24V

2

9

10

24V supply

(Module and system bus
level)

24VDC ±20%
≈ 100 mA

reverse polarity protected

Max. permissible current
load: 500mA

Connection of supply voltage
for module and 24V source for
supply of the digital inputs
(DIN1 to DIN8)

via DC/DC converter to
Terminal 11.

-

3 DIN5

Digital input 5

(I/O PROFINET DIN5)

Low 0V ... 5V
High 15V ... 30V
Ri = 10k

Input capacitance 10nF
Scan rate 1 ms

Inputs as per
EN 61131-2 Type 1

Each digital input has a
reaction time of 3 ms.

P174

4 DIN7

Digital input 7

(I/O PROFINET DIN7)

P174

5 DIN6

Digital input 6

(I/O PROFINET DIN6)

P174

6 DIN8

Digital input 8

(I/O PROFINET DIN8)

P174

7 0V

8

GND
Reference potential
for digital signals

As for terminal 15

GND for system bus and digital
inputs (DIN1 to DIN8)

via connection of DC/DC
converter to Terminal 15

-

11 24V

12

13

24V supply

(Module 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 DIN8)

-

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 PROFINET 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 3 ms.

P174

20 DIN3

Digital input 3

(I/O PROFINET DIN3)

P174

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 DIN8)

-

23 24V

24

24V supply

(Module and system bus
level)

As for terminal 1
However, max. permissible

current load: 3A

-

2 Assembly and installation

BU 0290 GB-4312 Subject to technical amendments 17

PROFINET bus module for NORD frequency inverters SK 200E

Terminal/
Designation

Function

Data

Description /
wiring suggestion

Parameter

25 DIN2

Digital input 2

(I/O PROFINET 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 3 ms.

P174

26 DIN4

Digital input 4

(I/O PROFINET 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 DIN8)

-

29 24V

30

24V supply

(Module 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 PROFINET DO1)

Low = 0V
High: 24V

Rated current: 500mA each

The digital outputs should be
used with a separate 24V
supply
P150
P175

34 DO2

Digital output 2

(I/O PROFINET DO2)

P150
P175

35 0V2

36

GND 2
Reference potential
for digital outputs

Ground for digital outputs (DO1
and DO2)

If necessary, bridge to 0V
terminal

-

Table 4 Connection assignment of BUS connection unit for PROFINET IO

18 Subject to technical amendments BU 0290 GB-4312

3 Displays and diagnosis

RJ12

LEDs
Potentiometers

RJ12

LEDs
Potentiometers

Frequency inverterSK 205E

viewing window (transparent screw-on cover) for

diagnostic interface RJ12, status LEDs, potentiometer

PROFINET Module SK TU4-PNT with

SK TI4-TU-BUS and SK TIE4-WMK-TU

Status LEDs and screw connection for RJ12

diagnostic interface

RJ12

BUS Status BS and BE

Status LED S/E

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 PROFINET modules provide LED status and diagnostic displays
to indicate the various statuses.

A differentiation into 2 categories is made

 Module or module-specific displays (S and E or DS and DE)
 PROFINET-specific displays

(- physical status: L/A in and L/A out

- Process status: RUN and BF)

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 RUN and BF
The dual LEDs RUN (BUS State) and BF (BUS Fault)

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 0290 GB-4312 Subject to technical amendments 19

PROFINET bus module for NORD frequency inverters SK 200E

3.1.1.2 Technology unit SK TU4-PNT

LEDs LINK and ACT
The single colour LINK LEDs indicate the physical connection to

the Ethernet bus.
The single colourACT (Activity) LEDs indicate bus activity (data

transfer).

LEDs RUN and BF
The single colour LEDs RUN (PROFINET RUN) and BF

(PROFINET BUS FAULT) indicate the PROFINET communication
status.

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.

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

20 Subject to technical amendments BU 0290 GB-4312

3 Displays and diagnosis

DS

(Device State)

Green LED

DE

(Device Error)

Red LED

Meaning

long flashing = 0.5 s on / 1 s off
short flashing = 0.25 s on / 1 s off

OFF

OFF

Technology unit not ready, no control voltage

ON

OFF

Technology unit ready, no error, at least one frequency inverter is
communicating via the system bus

ON

Short flashing

Technology unit ready, however
 one or more of the connected frequency inverters has a fault status

(see frequency inverter manual)

Long flashing

OFF

Technology unit ready and at least one further subscriber is connected
to the system bus, but

 No frequency inverter on the system bus (or connection interrupted)
 Address error for one or more system bus participants

Long flashing

Short flashing

Flash interval

1 x - 1s pause

System bus is in status "Bus Warning"

 Communication on system bus interrupted or
 no other participant present on the system bus

Long flashing

Short flashing

Flash interval

2 x - 1s pause

 System bus is in status "Bus off" or
 the system bus 24V power supply was interrupted during operation

Long flashing

Short flashing

Flash interval

3 x - 1s pause

No system bus 24V power supply

(system bus is in status "Bus off")

Long flashing

Short flashing

Flash interval

4 x - 1s pause

 PROFINET error of the technology unit

Details: LED flashing code: RUN and BF
(Section 3.1.2.2 "PROFINET displays"

OFF

Short flashing

Flash interval

1…7 x - 1s pause

System error, internal program sequence interrupted

 EMC interference (observe wiring guidelines!)
 Module faulty

3.1.2 Signal status LEDs

This manual only describes the LED signal statuses of the PROFINET IO modules. Information for the
frequency inverter LEDs (SK 200E) can be found in the relevant manual (BU0200).

The statuses indicated by the LED can be read out with the aid of a parameterisation tool from Getriebebau

Nord (NORDCON software ParameterBox) and also of course via the information parameter (P173) “Module

Status” (See Section 6.2.3 "BUS module information parameters, general (P17x)").

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.

Table 5 LED display, DS and GB

BU 0290 GB-4312 Subject to technical amendments 21

PROFINET bus module for NORD frequency inverters SK 200E

RUN

Green LED

Meaning

Flashing = 2.5 Hz (0.4 s cycle  0.2 s on / 0.2 s off)

OFF

Module not in operation
Device switched off or initialisation

Flashing

Waiting for AR (no connection to the PROFINET-IO controller)

 no parameter communication
 no process data communication

ON

AR established (a connection to the PROFINET IO controller has been set up)

 Parameter communication active
 Process data communication active

BF

Red LED

Meaning

Flashing = 2.5 Hz (0.4 s cycle  0.2 s on / 0.2 s off)
Double flash = 2 x brief flashes

OFF

No error

Flashing

Incorrect configuration
General PROFINET configuration error,

can be caused by a false GSDML file.

ON

Ethernet error
 SK TU4-PNT is not (physically) connected to an Ethernet participant

Double Flash

Watchdog - Timeout
 PROFINET or FI timeout (P151)

Link

Green LED

Activity

Yellow LED

Meaning

Off

Off

Port (RJ45 socket) is not connected to the PROFINET network

On

Off

Port (RJ45 socket is connected to the PROFINET network, but there
is no exchange of data

On

On / Flashing

Data exchange via PROFINET active

3.1.2.2 PROFINET displays

The communication status of the PROFINET IO module is indicated by the LEDs RUN and BF.
RUN = PROFINET IO bus status

BF = PROFINET IO bus fault

PROFINET IO status display

Table 6 RUN LED display

PROFINET IO error display

Table 7 BF LED display

The physical status of the field bus system (PROFINET IO) is indicated by the LINK /ACTIVITY LEDs, which
are located directly next to the RJ45 socket on the front panel.

Display of PROFINET Link and Active connections

Table 8 LED display, Link and Activity

22 Subject to technical amendments BU 0290 GB-4312

3 Displays and diagnosis

Terminal/
Designation

Function

Data

Description /
wiring suggestion

Parameter
Diagnostic access / RJ12, RS485/RS232

1 RS485 A

Data cable RS485

Baud rate
9600…38400Baud

Termination
resistor R=120  
to be set by customer at
the final participant.

RS485 _A

RS485 _B

GN D

TXD

RXD

+ 5V

+24V

RJ12: Pin No. 1 … 6

1: RS485_A
2: RS485_B
3: GND
4: RS232_TxD
5: RS232_RxD
6: +24V

P502
...P513

2 RS485 B

3 GND

Reference potential
for BUS signals

0V digital

4 232 TXD

Data cable RS232

Baud rate
9600…38400Baud

5 232 RXD

6 +24V

24V voltage supply
from FI

24V  20%

NOTE

Simultaneous use of several diagnostic sockets with several diagnostic tools may lead to
errors during communication. Therefore, only one diagnostic socket within a system bus
network should be used.

ParameterBox SK PAR-3H

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. This can be either the
diagnostic socket of the frequency inverter or that of the BUS connection units. 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.

Table 9 RJ12 socket connections

The bus speed of the diagnostic interface is 38400 baud. Communication is carried out according to the USS
protocol.

The ParameterBox SK PAR-3H is available as a diagnostic tool.
The necessary connecting cables are included in the scope of

delivery of the ParameterBox. For a detailed description of use,
please refer to Manual BU0040.

BU 0290 GB-4312 Subject to technical amendments 23