nord BU 0135 User manual

Additional information to BU 0135, V2713
NOTICE Modification of BU 0135
Please regard the additional information attached at the end of the document concerning:
•UL – Gruppenabsicherung / group fusing (TI 80_0013)
Bargteheide, 08.12.2014
Getriebebau NORD GmbH & Co. KG
Getriebebau-Nord-Straße 1 •22941 Bargteheide, Germany •http://www.nord.com/
Fon +49 (0) 45 32 / 289-0 •Fax [phone]

GB
BU 0135
SK 105E…175E
Motor Starter Manual

SK 105E…175E Motor Starter Manual Safety information
2 BU 0135 GB-2713
NORD Motor Starters
(Starters, Sort Starters, Reverse Starters)
Safety and operating instructions
for motor starters
(as per: Low Voltage Directive 2006/95/EEC)
1. General
During operation, motor starters 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 per-
sonnel are persons who are familiar with the assembly, installation,
commissioning and operation of this product and who have the rele-
vant qualifications for their work.
2. Proper use in Europe
Motor starters are components intended for installation in electrical
systems or machines.
When installed in machines, the drive power converter must not be
commissioned (i.e. commencement of the proper use) until it has
been ensured that the machine meets the provisions of the EC Di-
rective 2006/42/EEC (Machinery Directive); EN 60204 must also be
complied with.
Commissioning (i.e. implementation of the proper use) is only per-
mitted if the EMC directive (2004/108/EEC) is complied with.
CE-labelled motor starters meet the requirements of the Low Volt-
age 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 motor starters 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 motor starter must be protected against impermissible
loads. Especially during transport and handling, compo-
nents must not be deformed and/or insulation distances
must not be changed. Touching of electronic components
and contacts must be avoided.
Motor starters have electrostatically sensitive components,
which can be easily damaged by incorrect handling. Electri-
cal components must not be mechanically damaged or de-
stroyed (this may cause a health hazard!).
5. Electrical connections
When working on live drive components, the applicable na-
tional accident prevention regulations must be complied with
(e.g. BGV A3, formerly VBG 4).
The electrical installation must be implemented according to
the applicable regulations (e.g. cable cross-section, fuses,
earth 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 ca-
bles can be found in the drive power converter documenta-
tion. These instructions must be complied with even with CE
marked motor starters. Compliance with the limiting values
specified in the EMC regulations is the responsibility of the
manufacturer of the system or machine.
6. Operation
Systems in which motor starters are installed must be
equipped, where necessary, with additional monitoring and
protective equipment as per the applicable safety require-
ments, e.g. legislation concerning technical equipment, ac-
cident prevention regulations, etc.
The parameterisation and configuration of the motor starter
must be selected so that no hazards can occur.
All covers must be kept closed during operation.
7. Maintenance and repairs
After the motor starter is disconnected from the power sup-
ply, 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!

SK 105E…175E Motor Starter Manual Concerning this document
BU 0135 GB-2713 3
Documentation
Designation: BU 0135 GB
Part No.: 607 1302
Device series: SK 105E, SK 115E, SK 125E, SK 135E, SK 145E, SK 155E, SK 165E, SK 175E
Device types: SK 1x5E-301-340-A, SK 1x5E-751-340-A, 0.25 - 7.5kW, 3~ 200-500V
Version list
Designation of
previous issues
Software
Version
Comments
BU 0135 GB, July 2013
Part No. 607 1302 / 2713
V 1.0 R0
First version based on BU 0200 DE / 2011
Publisher
Getriebebau NORD GmbH & Co. KG
Rudolf-Diesel-Str. 1  D-22941 Bargteheide  http://www.nord.com/
Tel.: [phone] / 289-0  Fax [phone]
Intended use of the motor starter:
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.
SK 1x5E motor starters are devices for industrial and commercial plants for operating
three-phase asynchronous motors with squirrel-cage rotors.
SK 1x5E motor starters are devices for fixed installation on motors or in the vicinity of the
motors 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, 2013

SK 105E…175E Motor Starter Manual
4 BU 0135 GB-2713
1 GENERAL INFORMATION ...................................................................................................... 6
1.1 Overview .............................................................................................................. 7
1.2 Delivery ................................................................................................................ 7
1.3 Scope of supply ................................................................................................... 8
1.4 Safety and installation information ...................................................................... 9
1.5 Certifications ...................................................................................................... 10
1.5.1 European EMC Directive ........................................................................................ 10
1.5.2 UL and cUL approval(in preparation) ...................................................................... 10
1.5.3 C-Tick labelling ....................................................................................................... 11
1.5.4 RoHS compliance ................................................................................................... 11
1.6 Nomenclature / type codes ................................................................................ 12
1.6.1 Type code for basic unit .......................................................................................... 13
1.6.2 Type codes / Adapter unit - Technology Unit .......................................................... 13
1.6.3 Type codes / Optional modules .............................................................................. 13
1.7 Version with protection class IP55 / IP66 .......................................................... 15
2 ASSEMBLY AND INSTALLATION ....................................................................................... 16
2.1 Installation and assembly .................................................................................. 16
2.1.1 Mounting the housing box ....................................................................................... 17
2.1.2 Adapters for different motors .................................................................................. 18
2.1.3 Installation of the motor starter ............................................................................... 19
2.1.4 Option locations in the device ................................................................................. 20
2.2 Dimensions of the motor starter ........................................................................ 20
2.2.1 Power rating / Motor size ........................................................................................ 20
2.2.2 SK 1x5E mounted on motor .................................................................................... 21
2.2.3 SK 1x5E for wall-mounting...................................................................................... 22
2.3 Wiring guidelines ............................................................................................... 23
2.4 Electrical Connection ......................................................................................... 24
2.5 Electrical connection of the power unit .............................................................. 25
2.5.1 Mains connections (L1, L2, L3, PE) ........................................................................ 26
2.5.2 Motor cable (U, V, W, PE)....................................................................................... 26
2.5.3 Electro-mechanical brake ....................................................................................... 27
2.6 Electrical connection of SK 1x5E control unit .................................................... 28
2.6.1 SK 1x5E control terminal versions .......................................................................... 29
2.6.2 Details of the SK 1x5E control connections ............................................................ 30
2.6.3 Control connections for SK 1x5E communication ................................................... 31
2.7 Plug connectors ................................................................................................. 32
2.7.1 Plug connectors for power connections .................................................................. 32
2.7.2 Plug connectors for control connection ................................................................... 33
2.8 ATEX Zone 22 for SK 1x5E (in preparation) ..................................................... 35
2.8.1 Modified SK 1x5E for compliance with Category 3D ............................................... 36
2.8.2 Options for ATEX Zone 22 3D ................................................................................ 36
2.8.3 Commissioning information..................................................................................... 38
2.8.4 EC Declaration of Conformity (in preparation) ........................................................ 39
2.9 Outdoor installation ............................................................................................ 40
3 DISPLAY AND CONTROL .................................................................................................... 41
3.1 Diagnostic LEDs on the motor starter ............................................................... 42
3.2 Overview of external control devices ................................................................. 43
4 COMMISSIONING .................................................................................................................. 44
4.1 Factory settings ................................................................................................. 44
4.2 Commissioning the motor starter....................................................................... 44
4.2.1 Connection.............................................................................................................. 44
4.2.2 Configuration .......................................................................................................... 45
4.3 AS Interface ....................................................................................................... 49
4.3.1 The bus system ...................................................................................................... 49

Table of Contents
BU 0135 GB-2713 5
4.3.2 Features .................................................................................................................. 50
4.3.3 Bus structure and technology .................................................................................. 50
4.3.4 Commissioning of the AS Interface ......................................................................... 52
4.3.5 Technical data for AS interface ............................................................................... 55
4.3.6 Functions of the ASI I/O bits ................................................................................... 55
4.4 PROFIBUS ................................................... Fehler! Textmarke nicht definiert.
4.4.1 Features .................................................................................................................. 56
4.4.2 Connection .............................................................................................................. 56
4.4.3 Addressing .............................................................................................................. 57
4.4.4 Displays .................................................................................................................. 58
4.4.5 Process data ........................................................................................................... 59
5 PARAMETERISATION ........................................................................................................... 60
5.1 Parameter ........................................................................................................... 61
5.1.1 Operating displays .................................................................................................. 62
5.1.2 Basic parameters .................................................................................................... 63
5.1.3 Motor and characteristic curve parameters ............................................................. 66
5.1.4 Control terminals ..................................................................................................... 67
5.1.5 Additional parameters ............................................................................................. 69
5.1.6 Information .............................................................................................................. 72
6 OPERATING STATUS MESSAGES ...................................................................................... 77
6.1 SimpleBox display .............................................................................................. 77
6.2 Table of possible error messages ...................................................................... 78
6.3 Table of possible warning messages ................................................................. 79
6.4 Table of possible reasons for the operating status "switch-on disabled" ........... 79
7 TECHNICAL DATA ................................................................................................................. 80
7.1 General data forSK 1x5E motor starter series ................................................... 80
7.2 Motor starter electrical data ................................................................................ 81
7.3 Electromagnetic compatibility ............................................................................. 82
7.4 EMC limit value classes ..................................................................................... 83
7.5 Operation with FI circuit breakers ....................................................................... 83
8 ADDITIONAL INFORMATION ................................................................................................ 84
8.1 Maintenance and servicing information .............................................................. 84
8.1.1 Maintenance Instructions ........................................................................................ 84
8.1.2 Repair information ................................................................................................... 84
8.2 Abbreviations in this manual .............................................................................. 85
9 KEYWORD INDEX .................................................................................................................. 86

SK 105E…175E Motor Starter Manual
6 Pre-series version BU 0135 GB-2713
1 General information
The SK 1x5E series is based on the tried and tested NORD platform. These devices feature a compact
design with optimum characteristics.
Due to dual phase control, not only a pure motor start, but also a soft start is possible. The phase control
process was selected so that the resulting harmonic torques are kept as low as possible. A comprehensive
spectrum of monitoring functions rounds off the range.
This series of devices can be adapted to individual requirements by means of extension modules.
Due to the numerous setting options, these inverters are capable of operating all three-phase motors.
The power range is from 0.25kW to 7.5kW. The device is equipped with an integrated mains filter.
This manual is based on the device software V1.0 R0 (see P707) of the motor starter. If the motor starter
uses a different software version, this may cause differences. If necessary, the latest manual should be
downloaded from the Internet (www.nord.com).
For the various versions of the device series SK 105E…SK 175E there are differences in functions, the
integrated AS interface or the integrated PROFIBUS interface.
Typically, this series of devices is installed directly on a three-phase asynchronous motor. Alternatively,
optional accessories are available for mounting the devices close to the motor, e.g. on the wall or on a
machine frame.
In the simplest configuration, even without a PC or control box, all of the most important parameters can be
set using up to four potentiometers and the four DIP switches. LEDs are provided for the diagnostics of the
operating status. The use of a control module is therefore not absolutely necessary.
In order to gain access to all parameters, the internal RS232 PC interface (RJ12) can be used, or an
optional SimpleBox or ParameterBox may be used. In this case, the parameter settings which are changed
by the user are saved in the flash memory of the device.
A permanent connection via the RS 232 interface is not intended for normal operation.

1 General
BU 0135 GB-2713 Pre-series version 7
1.1 Overview
This manual describes all of the possible functions and equipment. The equipment and functions are limited
according to the type of device (SK 105E…175E). Type SK 175E devices have the maximum configuration
level.
Basic features of the SK 1x5E:
 2 digital inputs
 2 digital outputs
 Temperature sensor input (TF+/TF-)
 Control and connection of an electromechanical brake
 Motor overload protection (I2t triggering characteristic according to EN 60947)
 Mains and motor phase failure monitoring
 Flux monitoring (monitoring of minimum current)
 Automatic phase sequence detection
 Can be installed directly on, or near to the motor
 Permissible ambient temperature -25°C to 50°C (please refer to the technical data)
 Integrated EMC line filter for limit curve category C1
 4x DIP switches and up to four potentiometers for configuration
 LEDs for diagnostics
 RS232 interface via RJ12 plug
Additional features:
Differences between the individual versions (SK 105E / … SK 175E) are summarised in the following table
and will be described in this manual.
Additional features
Feature
105E
115E
125E
135E
145E-
155E-
165E-
175E-
Soft start function
x
x
x
x
Reversing function
x
x
x
x
Two additional digital inputs
x
x
x
x
AS interface (4I / 4O)
ASI
ASI
ASI
ASI
PROFIBUS-DP (4I / 4O)1
PBR
PBR
PBR
PBR
SK 145E … SK 175E devices are available as (-ASI) versions with an integrated AS interface and as (-PBR)
versions with integrated PROFIBUS DP. The version with integrated PROFIBUS DP is only available on
request.
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
Only available on request and as an alternative to the ASI interface.

SK 105E…175E Motor Starter Manual
8 Pre-series version BU 0135 GB-2713
1.3 Scope of supply
Standard version: IP55 (optionally IP66)
Operating instructions as PDF file on CD-ROM
including NORD CON (PC parameterising software)
Available accessories: Matching RJ12 to SUB-D9 adapter cable to connection to a PC
(Selection) RS485-RS232 conversion for connecting control boxes
SK CSX-3H, SimpleBox, 4-digit 7-segment LED display
SK PAR-3H, ParameterBox, plain text LCD display
Expansion module:
internal SK CU4-24V-123-B, internal 24V mains unit 1~ 230V
SK CU4-24V-140-B, internal 24V mains unit 1~ 400V
SK CU4-REL, internal setpoint converter with 2 relays
SK TIE4-SWT, direction selector switch module
External SK TU4-PBR, external PROFIBUS® module
2
SK TU4-CAO, external CANopen® module2
SK TU4-DEV, external DeviceNet™ module2
SK TU4-ECT, external EtherCAT® module2
SK TU4-PNT, external PROFInet® module2
SK TU4-POL, external POWERLINK® module2
SK TU4-EIP, external Ethernet/IP™ module2
SK TU4-24V-123-B, external 24V mains unit 1~ 230V
SK TU4-24V-140-B, external 24V mains unit 1~ 400V
SK TI4-TU-BUS or NET or MSW, connection unit TU4
SK TIE4-WMK-TU, wall-mounting kit TU4
SK TU4 MSW, external maintenance switch
NOTE: Details for the use of the relevant bus systems can be found in the applicable supplementary bus manual.
> www.nord.com <
2
External bus modules can be used to control the motor starter via their additional digital inputs and outputs.
Parameterisation via the field bus modules is not possible!

1 General
BU 0135 GB-2713 Pre-series version 9
1.4 Safety and installation information
SK 1x5E motor starters are equipment for use in industrial high voltage systems and are operated at
voltages that could lead to severe injuries or death if they are touched.
 Installation and other work may only be carried out by qualified electricians and with the
device disconnected. The operating instructions must always be available to these
persons and must be strictly observed.
 Local regulations for the installation of electrical equipment and accident prevention
must be complied with.
 For safe isolation from the mains, all poles of the supply cable to the motor starter must
be disconnected.
 Even during motor standstill (e.g. caused by an electronic block, blocked drive or output
terminal short circuit), the line connection terminals, motor terminals and braking resistor
terminals may still conduct hazardous voltages. A motor standstill is not identical to
electrical isolation from the mains.
 Warning, under certain settings the motor starter can start automatically after the mains
are switched on.
 The motor starter is only intended for permanent connection and may not be operated
without effective earthing connections that comply with local regulations for large
leakage currents (> 3.5mA). VDE 0160 stipulates the installation of a second earthing
conductor or an earthing conductor cross-section of at least 10 mm2.
 SK 1x5E motor starters are maintenance free in normal operation. The cooling surfaces
must be regularly cleaned with compressed air if the ambient air is dusty.
CAUTION
The heat sink and all other metal components can heat up to temperatures above 70°C.
When mounting, sufficient distance from neighbouring components must be maintained.
When working on the components, allow sufficient cooling time beforehand
Protection against accidental contact may need to be provided.
ATTENTION
DANGER TO LIFE!
Under certain circumstances, the motor starter can continue to carry voltages for up to 1
minute after being switched off at the mains. Starter terminals, motor cables and motor
terminals may carry voltage!
Touching open or free terminals, cables and equipment components can lead to severe injury
or death!
Work may only be carried out by qualified specialist electricians and with the electrical supply
to the equipment disconnected!
CAUTION
Children and the general public must be kept away from the equipment!
The equipment may only be used for the purpose intended by the manufacturer.
Unauthorised modifications and the use of spare parts and additional equipment which has
not been purchased from or recommended by the manufacturer of the device may cause fire,
electric shock and injury.
Keep these operating instructions in an accessible location and give them to all operators!
WARNING
This product is intended for use in an industrial environment and is subject to sales
restrictions according to IEC EN 60947-4-2. In a domestic environment, this product can
cause high frequency interference, in which case the user may be required to take
appropriate measures.
An appropriate measure would be the inclusion of a recommended mains filter.

SK 105E…175E Motor Starter Manual
10 Pre-series version BU 0135 GB-2713
1.5 Certifications
1.5.1 European EMC Directive
If the SK 1x5E is installed according to the recommendations in this manual,
it meets all EMC directive requirements, as per the EMC product standard
for semiconductor motor control devices EN 60947-4. (see also Section 7.3,
Electromagnetic Compatibility [EMC].)
1.5.2 UL and cUL approval (in preparation)
At present the approvals are in the process of preparation.
All SK 1x5E motor starters include motor overload protection. Further technical details can be found in
Section 7.2.
NOTE
"Integral solid state short circuit protection does not provide branch circuit protection. Branch
circuit protection must be provided in accordance with the National Electric Code and any
additional local codes."
NOTE
“The device has to be mounted according to the manufacturer instructions.”
"Use 80°C Copper Conductors Only"
(only refers to connection cables (mains and motor cables but not control cables)
"These products are intended for use in a pollution degree 2 environment"
cUL Approval - File No. E171342
“Suitable For Use On A Circuit Capable Of Delivering Not More Than 100000 rms
Symmetrical Amperes, 500 Volts maximum and when protected by RK5 class or faster
fuses as indicated in chapter 7.2.”
“Suitable For Use On A Circuit Capable Of Delivering Not More Than 10000 rms Symmetrical Amperes, 500 Volts
maximum and when protected by Circuit Breaker (inverse time trip type) in accordance with UL 489”, current and
voltage ratings according to instruction manual.
„The torque value for the field wiring terminals for mains circuit terminals, motor terminals, break terminals and breaking
resistor terminals must be 11 … 15 lb-in (1.2 … 1.5Nm). The torque value for the field wiring terminals for control circuit
terminals must be 4.4 … 5.3 lb-in (0.5 … 0.6Nm).”

1 General
BU 0135 GB-2713 Pre-series version 11
1.5.3 C-Tick labelling
NORD SK 1x5E series motor starters fulfill all the relevant regulations in
Australia and New Zealand.
1.5.4 RoHS compliance
SK 1x5E series motor starters are designed to be RoHS compliant
according to Directive 2002/95/EEC
N 23134

SK 105E…175E Motor Starter Manual
12 Pre-series version BU 0135 GB-2713
1.6 Nomenclature / type codes
Unique type codes have been defined for the individual modules and devices. These provide individual
details of the device type and its electrical data, protection class, fixing version and special versions.
A differentiation is made according to the following groups:
Group
Example of type code
Basic unit
SK 175E-751-340-A (-C)
Connection unit Technology Unit (optional terminal box module)
SK TI4-TU-MSW (-C-WMK-TU)
Optional modules
SK TU4-MSW (-C)
Extension modules
SK TIE4-M12-INI
The type designation resulting from this type code can be obtained from the name plate which is attached to
or printed on the relevant module.
Optional module
SK TU4-xxx (-…)
Optional terminal
box module
SK 1x5E
motor starter

1 General
BU 0135 GB-2713 Pre-series version 13
1.6.1 Type code for basic unit
SK 175E-751-340-B (-C)
IP protection class: Standard = IP55, C = “coated”
Radio interference filter: B = Class C1
Mains voltage: x40 = 200 - 500V
Number of mains phases: 3xx = 3-phase
Digits before decimal point for power: 0 = 0.xx, 1 = 0x.x0, 2 = 0xx.0
Device nominal power: 301 = 3.0kW, 751 = 7.5kW
Device series: SK 105E, SK 115E, SK 125E, SK 135E,
SK 145E, SK 155E, SK 165E, SK 175E
(...) Options, only implemented if required.
1.6.2 Type codes / Adapter unit - Technology Unit
SK TI4-TU-MSW (-C-WMK-TU)
Wall mounting kit: -1 = Size 1 + 2
IP protection class: Standard = IP55, C = “coated” IP66
Suitable device types: NET = optional net module (e.g. TU4-24V-… )
MSW = maintenance switch (SK TU4-MSW
BUS = optional bus module (e.g. CANopen: TU4-CAO)
Group: TU = Technology unit
Device series: SK TI4 = Adapter unit SK TI4
(...) Options, only implemented if required.
1.6.3 Type codes / Optional modules
For optional modules
SK TU4-24V-123-B (-C)
IP protection class: Standard = IP55, C = “coated” IP66
Radio interference filter: B = Class C1
Mains connection: 123 = 1~ 230V*, 140 = 1~ 400V*
Option type: 24V = 24V power supply, FUSE
Option series: TU4 = external Technology Unit,
CU4 = = internal customer unit
*) The voltage depends on the motor starter used; please also refer to the technical data.
(...) Options, only implemented if required.

SK 105E…175E Motor Starter Manual
14 Pre-series version BU 0135 GB-2713
Optional internal
Customer Unit, SK CU4-…
Optional external
Technology Unit, SK TU4-…

1 General
BU 0135 GB-2713 Pre-series version 15
1.7 Version with protection class IP55 / IP66
The SK 1x5E motor starters and additional modules are available in protection classes IP55 (standard) or
IP66 (optional).
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 differ-
entiate the protection classes, modules with protection class IP66 are given an extra “-C” (coated  coated
PCBs) in their type designation.
e.g. SK 175E-751-340-A-C
IP55 version:
The IP55 version of the SK 1x5E is the standard version. Both versions (motor-mounted, mounted on the
motor or wall-mounted on a wall bracket) are available. In addition, all adapter units, technology units and
customer units are available for this version.
IP66 version:
In contrast to the IP55 version the IP66 version is a modified option. For this version, both variants (motor-
integrated, close to motor) 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.
NOTE
The modules for the IP66 design are identified by an additional "-C" and are modified
according to the following special measures listed below.
Special measures:
Impregnated PCBs,
Powder coating RAL 9006 (white aluminium) for housing
Low pressure test
NOTE
For all versions, care must be taken that the cable and the cable gland are carefully
matched. Wherever possible, the cables should be inserted so that water is deflected away
from the device (if necessary use loops). This is the only way to ensure permanent
compliance with the required protection class.

SK 105E…175E Motor Starter Manual
16 Pre-series version BU 0135 GB-2713
2 Assembly and installation
2.1 Assembly
The motor starters are available in various sizes depending on their output. They only differ with regard to
their possibilities for adaption to the matching motors. The external dimensions of both sizes are
identical. Size 1 is matched to motor size 80-100. Size 2 is matched to motor size 132.
Motor-mounted version
Wall-mounted version

2 Assembly and installation
BU 0135 GB-2713 Pre-series version 17
2.1.1 Mounting the housing box
On delivery of a complete drive unit (gear unit + motor + frequency inverter) SK 1x5E motor starters are
always fully installed and tested.
NOTE
Mounting of an IP66-compliant SK 1x5E must be carried out by NORD as special measures
have to be implemented. IP66 components retrofitted on site cannot ensure that this protection
class is guaranteed.
When delivered separately, the motor starter includes the following components:
 Motor starters
 Screws and contact washers for mounting the motor terminal box.
 Pre-fabricated cable for motor and PTC connections
Procedures:
1. If necessary, remove the original terminal box from the NORD motor, so that only the base of the
terminal box and the terminal strip remain.
2. Set the bridges for the correct motor circuit and connect the pre-fabricated cables for motor and PTC
connections to the respective connection points on the motor.
3. Mount the cast housing on the terminal box base of the NORD motor using the existing screws and seal
as well as the enclosed toothed / contact washers. Position the cast housing with the dome facing the
A-side of the motor (looking towards the A bearing cover). Check the adaptability for different motor
manufacturers.
If necessary, the plastic cover (1) for the electronics must be carefully removed in order to make the
screw fastenings to the base of the terminal box.
4. Connect the motor cables U, V, W to the power terminal block and the PTC cable TF+, TF- to the control
terminal block 38, 39.

SK 105E…175E Motor Starter Manual
18 Pre-series version BU 0135 GB-2713
2.1.2 Adapters for different motors
In some cases, the terminal box attachments are different for different sizes of motor. Therefore it may be
necessary to use an adapter to mount a motor starter.
In order to guarantee the maximum protection class IP55 / IP66 of the entire unit, the protection class of the
motor starter must also correspond to this value.
NORD motor
sizes
Add-on
SK 1x5E Size 1
Add-on
SK 1x5E Size 2
Size 63 – 71
with adapter kit I
not possible
Size 80 – 112
Direct mounting
with adapter kit II
Size 132
not possible
Direct mounting
Overview of adapter kits
Name
Add-on SK 1x5E
Part No.
Adapter kit size 63-71 to KK80-112
(Adapter kit I)
Adapter plate, terminal box frame seal and screws
275119050
SK TI4-3 adapter kit_80-112
(Adapter kit II)
Adapter plate, terminal box frame seal and screws
275274321
Adapter plate
Seal
Motor Size 71
Motor starter SK 1x5E BGI
Example
NOTE
The adaptability of motors from other manufacturers must be checked individually!
Information for the conversion of controlled drive units to the SK 1x5E can be found in BU0320.

2 Assembly and installation
BU 0135 GB-2713 Pre-series version 19
2.1.3 Installation of the motor starter
The housing cover must first be removed in order to make the electrical connections to the SK 1x5E. To do
this, unscrew the 4 fastening screws, so that the housing cover can be removed upwards.
After the electrical connections of the supply cables have been made, the housing cover can be replaced.
To achieve the maximum protection class IP55/IP66, care must be taken that all the fastening screws of the
housing cover are tightened diagonally, step-by-step and with the torques stated in the table below.
For the cable gland of the connecting cable, appropriate screwed connections for cable cross-section must
be used.
Motor starter size
Screw size
Tightening torque
Size I
M5 x 25
3.5Nm ± 20%
Size II
M5 x 25
3.5Nm ± 20%