nord NORDAC SK 200E User manual

Intelligent Drivesystems, Worldwide Services
MANUAL BU 0200 GB
NORDAC SK 200E
FREQUENCY INVERTER
BU 0200 GB
Getriebebau NORD GmbH & Co. KG
Rudolf-Diesel-Straße 1
D-22941 Bargteheide
Tel.: +49 45 32 - 40 10
Fax: +49 45 32 - 40 12 53

NORDAC SK 200E Manual
2 BU 0200 GB

NORDAC SK 200E Manual Safety information
BU 0200 GB 3
NORDAC SK 200E Frequency Inverter
Safety and operating instructions for drive power converters
(as per: Low Voltage Directive 73/23/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 89/392/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 (89/336/EEC) is complied with.
The drive power converters meet the requirements of the Low
Voltage Directive 73/23/EEC. The harmonised standards in prEN
50178/DIN VDE 0160, in association with EN 60439-1/VDE 0660
Part 500 and EN 60146/VDE 0558 were used for the drive power
converter.
Technical data and information for connection conditions can be
found on the rating plate and in the documentation, and must be
complied with.
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 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.
Modifications to the drive power converter using the
operating software are permitted.
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.
All covers must be kept closed during operation.
7. Maintenance and repairs
The manufacturer documentation must be complied with.
These safety instructions must be kept in a safe place!

NORDAC SK 200E Manual Concerning this document
4 BU 0200 GB
Documentation
Designation: BU 0200 GB
Part No.: 607 20 01
Device series: SK 205E, SK 215E, SK 225E, SK 235E
Device types: SK 2xxE-250-112-O ... SK 2xxE-750-112-O, 0.25 - 0.75kW, 1~ 100-120V, 230V Output
SK 2xxE-250-123-O ... SK 2xxE-111-123-A, 0.25 - 1.1kW, 1~ 220-240V
SK 2xxE-250-323-O ... SK 2xxE-401-323-A, 0.25 - 4.0kW, 3~ 220-240V
SK 2xxE-550-340-O ... SK 2xxE-751-340-A, 0.55 - 7.5kW, 3~ 380-480V
Version list
Designation of
previous versions
Software
Version
Comments
BU 0200 GB, March 2009
Mat. No. 607 2001 / 1009
V 1.1 R1 First version based on BU 0500 DE / 2008
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

NORDAC SK 200E Manual Concerning this document
BU 0200 GB 5
Intended use of the frequency inverter
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.
SK 200E frequency inverters are devices for industrial and commercial plants for operating
three-phase asynchronous motors with squirrel-cage rotors. These motors must be suitable
for operation with frequency inverters. Other loads must not be connected to the devices.
SK 200E frequency inverters 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 89/336/EEC and that the
conformity of the end product meets the Machinery Directive 89/392/EEC (observe EN
60204).
Getriebebau NORD GmbH & Co. KG, 2009

NORDAC SK 200E Handbuch
6 BU 0200 GB
1 GENERAL INFORMATION...................................................................................................... 9
1.1 Overview............................................................................................................ 10
1.2 Delivery.............................................................................................................. 11
1.3 Scope of supply ................................................................................................. 11
1.4 Safety and installation information .................................................................... 12
1.5 Certifications...................................................................................................... 13
1.5.1 European EMC guideline........................................................................................ 13
1.5.2 UL Approval - File No. E171342 (in preparation).................................................... 13
1.5.3 C-Tick labelling ....................................................................................................... 13
1.5.4 RoHS compliance ................................................................................................... 13
1.6 Type code / device design................................................................................. 14
1.7 Type code /Connection unit............................................................................... 15
1.8 Type code / Optional BUS modules .................................................................. 16
1.9 Type code / Optional NET modules .................................................................. 17
1.10 Version with protection class IP55 / IP66 ........................................................ 18
2 ASSEMBLY AND INSTALLATION ....................................................................................... 19
2.1 Installation and assembly .................................................................................. 19
2.1.1 Mounting the adapter unit ....................................................................................... 20
2.1.2 Adaptation to motor size .....................................Fehler! Textmarke nicht definiert.
2.1.3 Installation of the SK 200E ..................................................................................... 22
2.2 Dimensions: SK 200E........................................................................................ 23
2.2.1 Matching of power/size .......................................Fehler! Textmarke nicht definiert.
2.2.2 SK 200E mounted on motor ................................................................................... 24
2.2.3 SK 200E Wall-mounting.......................................................................................... 25
2.3 Brake resistor (BR) ............................................................................................ 26
2.3.1 Internal brake resistor SK BRI4-….......................................................................... 26
2.3.2 External brake resistor SK BRE4-… ....................................................................... 27
2.3.3 External brake resistor dimensions......................................................................... 27
2.3.4 Brake resistor, electrical data.................................................................................. 28
2.4 Wiring guidelines ............................................................................................... 29
2.5 Electrical connection.......................................................................................... 30
2.6 Electrical connection of power unit .................................................................... 31
2.6.1 Mains connections (X1 - L1, L2, L3, EARTH) ......................................................... 32
2.6.2 Motor cable (X2 - U, V, W, earth)............................................................................ 33
2.6.3 Brake resistor connection (X2 - +B, -B) .................................................................. 33
2.6.4 Mains adaptation jumper ........................................................................................ 34
2.6.5 Internal switching of the jumper ..........................Fehler! Textmarke nicht definiert.
2.7 Electrical connection of SK 200E control unit.................................................... 36
2.7.1 Control terminals, SK 2x5E versions ...................................................................... 37
2.7.2 Details of the SK 2x5E control connections ............................................................ 38

Table of Contents
BU 0200 GB 7
3 SK 200E DISPLAYS AND CONTROL ...................................................................................41
3.1 SK 200E modular components...........................................................................42
3.2 Overview of external control devices .................................................................43
3.2.1 SimpleBox, SK CSX-3H..........................................................................................44
3.2.2 ParameterBox, SK PAR-3H ....................................................................................49
3.2.3 ParameterBox parameters ...................................................................................... 55
3.2.4 ParameterBox error messages ...............................................................................57
3.3 Customer Unit Overview ....................................................................................61
3.3.1 Installation of Customer Units .................................................................................62
3.3.2 Profibus Module, SK CU4-PBR...............................................................................63
3.3.3 CANopen Module, SK CU4-CAO............................................................................64
3.3.4 DeviceNet Module, SK CU4-DEV ...........................................................................65
3.3.5 I/O Extension, SK CU4-IOE ....................................................................................66
3.3.6 24V Module, SK CU4-24V-1xx-B ............................................................................68
3.4 Potentiometer adapter, SK CU4-POT ................................................................69
3.5 Technology Unit Overview .................................................................................71
3.5.1 Mounting the technology unit ..................................................................................74
3.5.2 Profibus Module, SK TU4-PBR, ...-M12..................................................................77
3.5.3 CANopen module, SK TU4-CAO, ...-M12 ...............................................................77
3.5.4 DeviceNet module, SK TU4-DEV, ...-M12...............................................................78
3.5.5 IO-Extension, SK TU4-IOE, ...-M12 ........................................................................78
3.5.6 PotentiometerBox, SK TU4-POT-... ........................................................................79
3.5.7 Mains Unit, SK TU4-24V-… ....................................................................................80
4 COMMISSIONING, SK 200E..................................................................................................81
4.1 Minimal configuration without options ................................................................81
4.1.1 DIP switch configuration..........................................................................................82
4.1.2 Potentiometers P1 and P2 and diagnostic LEDs ....................................................84
4.2 Factory settings ..................................................................................................87
5 PARAMETERISATION...........................................................................................................88
5.1 Operating display ...............................................................................................90
5.2 Basic parameters ...............................................................................................92
5.3 Motor data / characteristic curve parameters.....................................................98
5.4 Control parameters...........................................................................................104
5.5 Control terminals ..............................................................................................107
5.6 Additional parameters ......................................................................................121
5.7 Positioning ........................................................................................................133
5.8 Information........................................................................................................134
5.9 Parameter overview, User settings ..................................................................142

NORDAC SK 200E Handbuch
8 BU 0200 GB
6 ERROR MESSAGES........................................................................................................... 152
6.1 SimpleBox display ........................................................................................... 152
6.2 Table of possible error messages ................................................................... 153
7 TECHNICAL DATA.............................................................................................................. 158
7.1 General Data SK 200E .................................................................................... 158
7.2 General data for mains/setpoint modules........................................................ 159
7.3 Electrical data 1~115V .................................................................................... 160
7.4 Electrical data 1~230V .................................................................................... 161
7.5 Electrical data 3~230V .................................................................................... 162
7.6 Electrical data 3~400V .................................................................................... 164
7.7 Electrical data for UL certification.................................................................... 166
8 ADDITIONAL INFORMATION............................................................................................. 168
8.1 Electromagnetic compatibility.......................................................................... 168
8.2 EMC limit value classes................................................................................... 168
8.3 Reduced output power .................................................................................... 170
8.3.1 Increased heat dissipation due to pulse frequency ............................................... 170
8.3.2 Reduced overcurrent due to time.......................................................................... 171
8.3.3 Reduced overcurrent due to output frequency...................................................... 172
8.3.4 Reduced output current due to mains voltage ...................................................... 173
8.3.5 Reduced output current due to the heat sink temperature.................................... 173
8.4 Operation with FI circuit breakers.................................................................... 174
8.5 Maintenance and servicing information........................................................... 174
8.6 Abbreviations in this Manual............................................................................ 175
9 KEYWORD INDEX............................................................................................................... 176
10 REPRESENTATIVES / BRANCHES................................................................................. 178

1 General
BU 0200 GB Subject to technical alterations 9
1 General information
The NORDAC SK 200E is based on the tried and tested NORD platform. These devices feature a compact
design with optimum control characteristics.
These devices are provided with sensorless vector current control which in combination with asynchronous
three-phase motor types constantly ensures an optimised voltage-to-frequency ratio. This has the following
significance for the drive: Peak start-up and overload torques at constant speed.
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 with an integrated mains filter.
This manual is based on the device software V1.7 R1 (see P707) of the SK 200E. If the frequency inverter
used has a different version, this may lead to some differences. If necessary, you can download the current
manual from the Internet (http://www.nord.com/).
For the SK 215E/225E/235E there are additional descriptions for functional safety (BU 0230), the integrated
AS interface (BU 0200, Section 2.7) and the positioning system (BU 0210). These contain all the necessary
additional information for start-up.
If a bus system is used for communication, a corresponding description (BU 0250) is provided, or this can
be downloaded from the Internet (http://www.nord.com/).
A typical feature of this series of devices is their installation directly on a three-phase asynchronous motor.
Alternatively, optional accessories are available for installation in the vicinity of the motor, e.g. on a wall or
on the frame of the machine.
In the simplest configuration, even without an EEPROM, there is the possibility of setting all important
parameters via two potentiometers and eight DIP switches. LEDs are provided for the diagnosis 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 have been
changed by the operator are stored in the plug-in EEPROM. The EEPROM must then always remain
plugged in during operation.
AS interface features (SK 225E/235E):
Electrically isolated bus interface.
Status indication with LED.
Slave profile 7.0 with cyclical 4 Bit I/O data.
Optional M12 connection.
Up to 4 digital SK 225/235E inputs can be integrated.
Up to 31 frequency inverters on one bus conductor (A-slave technology)
Cycle time ≤5ms

NORDAC SK 200E Manual
10 Subject to technical alterations BU 0200 GB
1.1 Overview
Features of the basic device SK 205E:
High starting torque and precise motor speed control setting with sensorless current vector control
Can be installed directly on, or near to the motor.
Permissible ambient temperature range -25°C to 50°C (refer to the technical data)
Integrated EMC mains filter for limit curve A Category C2 or C3 (not for 115V devices)
Automatic measurement of the stator resistance for precise determination of motor data
Programmable direct current braking
External 24V supply voltage
Integrated brake chopper for 4 quadrant operation, optional brake resistors (internal/external)
4x digital inputs (DIN1-4), 1x digital output (DO1), temperature sensor input (TF+/TF-)
Evaluation of an incremental encoder possible via digital inputs
NORD System bus for connection of additional modules
Electromagnetic brake control (MB+/MB-)
Four separate online switchable parameter sets
2x potentiometers and 8x DIP switches for minimal configuration
LEDs for diagnosis
RS232/RS485 interface via RJ12 plug
Plug-in EEPROM data storage
Integrated Posicon positioning control (Manual BU 0210)
CANopen absolute value encoder via the NORD System bus
Additional features of the SK 215E compared with the SK 205E:
Integrated Safe Pulse Block (Manual BU 0230)
However, only 3 free digital inputs available
Additional features of the SK 225E compared with the SK 205E:
ASI, integrated AS interface (4I/4O)
Additional features of the SK 215E compared with the SK 205E:
Integrated Safe Pulse Block (Manual BU 0230)
However, only 3 digital inputs
ASI, integrated AS interface (4I/4O)
NOTE: The features of the particular basic devices are different for the series SK 205E/215E/225E/235E.
These differences will be pointed out in the course of this description (Section 2.7.1).

1 General
BU 0200 GB Subject to technical alterations 11
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: IP55 (optionally IP66)
Integrated brake chopper
Integrated EMC mains filter for limit curve A Category C2 or C3
(not for 115V devices)
Operating instructions as pdf file on CD ROM
including NORD CON, PC parameterisation software
Available accessories: Braking resistor, required for energy feedback Section 2.4
Matching RJ12 to SUB-D9 adapter cable to connection to a PC
SK CSX-3H, SimpleBox, 4-digit 7-segment LED display
SK PAR-3H, ParameterBox, plain text LCD display
Extension modules:
internal SK CU4-IOE, internal I/O extension
SK CU4-PBR, internal Profibus module
SK CU4-PBR, internal CANopen module
SK CU4-DEV, internal DeviceNet module
SK CU4-24V-123-B, internal 24V mains unit 1~ 230V
SK CU4-24V-140-B, internal 24V mains unit 1~ 400V
SK CU4-POT, potentiometer adapter: internal potentiometer/switch module
external SK TU4-IOE, external I/O extension
SK TU4-PBR, external Profibus module
SK TU4-CAO, external CANopen module
SK TU4-DEV, external DeviceNet module
SK TU4-24V-123-B, external 24V mains unit 1~ 230V
SK TU4-24V-140-B, external 24V mains unit 1~ 400V
SK TU4-POT-123-B, external 24V and potentiometer/switch module 1~ 230V
SK TU4-POT-140-B, external 24V and potentiometer/switch module 1~ 400V
SK TI4-TU-BUS or NET, connection unit TU4
SK TIE4-WMK-TU, wall-mounting kit TU4
NOTE: An additional Bus manual BU 0250 is available … > www.nord.com <

NORDAC SK 200E Manual
12 Subject to technical alterations BU 0200 GB
1.4 Safety and installation information
NORDAC SK 200E frequency inverters are devices 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.
The equipment continues to carry hazardous voltages for up to 5 minutes after being
switched off at the mains.
For single phase operation (115/230V) the mains impedance must be at least 100H for
each conductor. If this is not the case, a mains choke must be installed.
For safe isolation from the mains, all poles of the supply cable to the frequency inverter
must be able to be disconnected.
Even during motor standstill (e.g. caused by a release 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: with certain settings, the frequency inverter/motor can start up automatically
after the mains are switched on.
The frequency inverter is only intended for permanent connection and may not be
operated without effective earthing connections which comply with the 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.
Normal FI-circuit breakers are not suitable as the sole protection for three-phase
frequency inverters if the local regulations do not permit a possible DC proportion in the
fault current. According to EN 50178 / VDE 0160, the FI circuit breaker must be an all-
current sensitive FI circuit breaker (type B).
In normal use, NORDAC 200E frequency inverters are maintenance free. 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 installing, sufficient distance from neighbouring components must be maintained. Allow
sufficient cooling time before working on the components.
Protection against accidental contact may need to be provided.
ATTENTION
DANGER TO LIFE!
The power unit can continue to carry voltages for up to 5 minutes after being switched off at
the mains. Inverter 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!

1 General
BU 0200 GB Subject to technical alterations 13
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 intended for use in an industrial environment and is subject to sales restrictions
according to IEC 61800-3. 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.
1.5 Certifications
1.5.1 European EMC guideline
If the NORDAC SK 200E is 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, Electromagnetic Compatibility [EMC].)
1.5.2 UL Approval - File No. E171342 (in preparation)
“Suitable for use on a circuit capable of delivering not more than 5000 rms
symmetrical Amperes, 120 Volts maximum (SK 2xxE-xxx-112), 240 Volts
maximum (SK 2xxE-xxx-323) or 500 Volts maximum (SK 2xxE-xxx-340) and
when protected by J class fuses as indicated.”
Suitable for use with mains with a maximum short circuit current of 5000A (symmetrical), 120V maximum
(SK 2xxE-xxx-112), 240V maximum (SK 2xxE-xxx-323), or 500V maximum (SK 2xxE-xxx-340), and with
protection with a J-class fuse as described in BU 0200 DE Section 7.7.
NORDAC SK 200E frequency inverters include protection against motor overload. Further technical details
can be found in Section 7.7.
1.5.3 C-Tick labelling
NORD SK 200E series frequency inverters fulfil all the relevant regulations in
Australia in New Zealand.
1.5.4 RoHS compliance
SK 200E serried frequency inverters are designed to be RoHS compliant
according to Directive 2002/95/EU.
N 23134

NORDAC SK 200E Manual
14 Subject to technical alterations BU 0200 GB
1.6 Type code / device design
SK 205E-xx0-323-A (-C)
IP protection class: Standard = IP55, C = "coated" IP66
Radio interference filter: O = without, A = Class A1, B = Class B1
Mains voltage: x12 = 115V, x23 = 230V, x40 = 400V
Number of mains phases: 1 = single phase, 3 = 3-phase
Digits before comma for power: 0 = 0.xx, 1 = 0x.x0, 2 = 0xx.0
Device nominal power (xx): 250 = 0.25kW, 370 = 0.37kW, ... 751 = 7.5kW
Device series: SK 205E, SK 215E, SK 225E, SK 235E
(...) Options, only implemented if required.
Electrical connections
Internal
Power/Control
Integrated
LEDs, potentiometers
and DIP switches
Device type plate

1 General
BU 0200 GB Subject to technical alterations 15
1.7 Type code /Connection unit
SK TI4-1-205-1 (-C-WMK-1)
Wall mounting kit -1 = BG I + II, -2 = BG III
IP protection class: Standard = IP55, C = “coated” IP66
Mains connection: 1 = 1~ 115/230V*, 3 = 3~ 230/400V*
Suitable device types: 205 = SK 205E, 215 = SK 215E,
225 = SK 225E, 235 = SK 235E
Size: 1 = BG I, 2 = BG II, 3 = BG III
Device series: SK 2xxE = TI4
*) The voltage depends on the frequency i nverter used; please also refer to the technical data.
(...) Options, only implemented if required.
Electrical connections
Internal
Power/Control
Adapter unit
SK TI4-x-2xx-x-x

NORDAC SK 200E Manual
16 Subject to technical alterations BU 0200 GB
1.8 Type code / Optional BUS modules
BUS = Bus module or I/O extension
SK TU4-CAO (-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
Op tion type: CAO = CANopen, PBR = Profibus,
DEV = DeviceNet, IOE = I/O extension
Option series: TU4 = external Technology Unit
CU4 = internal cu stomer unit
(...)Options, only implemented if required.
Optional internal
Customer Unit, SK CU4-…
Optional external
Technology Unit, SK TU4-...

1 General
BU 0200 GB Subject to technical alterations 17
1.9 Type code / Optional NET modules
NET = Mains unit or analog modules
SK TU4-24V-123-B (-C-WMK-TU)
Wall mounting kit for external Technology Unit, TU4
IP protection class: Standard = IP55, C = “coated” IP66
Radio interference filter: B = Class B1
Mains connection: 123 = 1~ 230V*, 140 = 1~ 400V*
Op tion type : 24V = 24V mains unit, PO T = potentiometer/switch module
Option series: TU4 = external Technology Unit,
CU4 = internal Customer Unit
*) The voltage depends on the frequency inverter used;
please also refer to the technical data.
(...)Options, only implemented if required.
Optional internal
Customer Unit, SK CU4-….
Optional external
Technology Unit, SK TU4-…

NORDAC SK 200E Manual
18 Subject to technical alterations BU 0200 GB
1.10 Version with protection class IP55 / IP66
NORDAC SK 200E frequency inverters and the additional modules are available in all sizes and 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 205E-750-340-A-C
IP55 version:
The IP55 version of the SK 200E 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. 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, painted 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.
NOTE
For all versions, care must be taken that the cable and the cable gland are carefully
matched. This is the only way to ensure permanent compliance with the required protection
class.

2 Mounting and Installation
BU 0200 GB Subject to technical alterations 19
2 Assembly and installation
2.1 Installation and assembly
NORDAC SK 200E frequency inverters are available in various sizes depending on their output. Connection
of the SK 200E to the motor or the wall-mounting unit is made by means of the a suitable size of connection
unit SK T14-… The frequency inverter is mounted by means of integrated plug contacts.
The devices require adequate ventilation to protect against overheating. For further details, please refer to
Section 7 “Technical Data”.
Motor-mounted version: Here, the ventilation of the motor is integrated into the cooling concept of the FI.
Mounting must therefore always be carried out as shown in the illustration. For permanently low motor
speeds and self-ventilated motors, a reduction in power similar to the wall-mounted version must be taken
into account.
Wall-mounted version: In continuous operation (S1), mounting away from the motor causes a reduction in
the power of the FI by one power level. This means that relative to the motor, the FU must be selected one
power level larger.
NOTE
For further details of the power reduction and the possible ambient temperatures, please
refer to the technical data in Section 7.

NORDAC SK 200E Manual
20 Subject to technical alterations BU 0200 GB
2.1.1 Mounting the adapter unit
For the supply of a complete drive unit (gear unit + motor + frequency inverter) the SK 200E frequency
inverter and the SK T14-... adapter unit are always completely assembled and tested. The adapter unit can
also be ordered separately for subsequent mounting on an existing motor or to replace a different motor-
mounted frequency inverter.
NOTE
However, the IP66 compliant SK 200E must be mounted by NORD as special measures must
be implemented. IP66 components retrofitted on site cannot ensure that this protection class is
guaranteed.
The “Adapter unit SK T14” includes the following components:
Cast housing, seal (already glued in) and insulation plate
Power terminal block, corresponding mains connection
Control terminal block, corresponding SK 200E version
Screw kit, for mounting on the motor and the terminal bars
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 using the existing screws and seal. Position the cast
housing with the dome facing the A-side of the motor. Check the adaptability for different motor
manufacturers.
4. Attach the insulating plate above the terminal strip. Screw on the power terminal bar above this using the
2 M4x8 screws and the plastic washers.
5. 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.