Nord Drivesystems NORDAC PRO SK 500P Specification sheet

BU 0600 –en
NORDAC PRO (SK 500P)
Manual with installation instructions

NORDAC PRO (SK 500P) – Manual with installation instructions
2 BU 0600 en-3221
Circuit diagram
1 Power supply suitable for device (see
Technical Data) 8 Alternative example “Digital input power supply via external power source (24 V DC)”
2
Connection message “FI Ready” (default)
9
Alternative example “PTC connected to D15”
3
Electromechanical brake connection (default)
10
Optional braking resistor
4
Top view
11
Bottom view
5
Slot for option modules SK CU5 -…, SK TU5-
CTR
M
Motor
6
Setpoint (e.g. speed)
12
Customer unit (NORDCON, Bluetooth stick,
ControlBox)
7
Actual value (e.g. speed)
Important: Please note the detailed description of the control terminals in the manual.

Documentation
BU 0600 en-3221 3
Documentation
Designation:
BU 0600
Part No.: 6076002
Series: NORDAC PRO
Device
series: SK 500P, SK 510P, SK 530P, SK 550P
Device types: SK 5xxP-250-123- ... SK 5xxP-221-123- (0.25 … 2.2 kW, 1~ 230 V, Out: 3~ …230 V)
SK 5xxP-250-340- ... SK 5xxP-551-340- (0.25 … 5.5 kW, 3~ 400 V, Out: 3~ …400 V)
Version list
Title,
Date
Order number Software
version of
device
Remarks
BU 0600,
June 2019
6076002 / 2319
V 1.0 R1
Field test version
BU 0600,
March 2020
6076002 / 1020
V 1.1 R1
First edition
BU 0600,
July 2021
6076002 / 3021
V 1.1 R1
• Update of “Standards and Approvals”
• Update of EU Declaration of Conformity
• Supplementation of data according to the Ecodesign
Directive
BU 0600,
August 2021
6076002 / 3221
V 1.3 R0
• Circuit diagram integrated
• Parameters revised
– Indication of visibility via mains voltage
– Setting values / Arrays amended
• Operating status messages revised
• Rotor position identification via dwell method for
PMSM
• Motor chokes supplemented
• Supplements to EMC kits
Table 1: Version list
Copyright notice
As an integral component of the device described here, this document must be provided to all
users in a suitable form.
Any editing or amendment or other utilisation of the document is prohibited.
Publisher
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]
Member of the NORD DRIVESYSTEMS Group

NORDAC PRO (SK 500P) – Manual with installation instructions
4 BU 0600 en-3221

Table of Contents
BU 0600 en-3221 5
Table of Contents
1General.........................................................................................................................................................9
1.1 Device characteristics......................................................................................................................10
1.2 Delivery............................................................................................................................................13
1.3 Scope of delivery .............................................................................................................................13
1.4 Safety, installation and application information ................................................................................17
1.5 Explanation of markings...................................................................................................................21
1.6 Warning information on the product.................................................................................................22
1.7 Standards and approvals .................................................................................................................23
1.7.1 UL and CSA approval.........................................................................................................23
1.8 Type code / nomenclature................................................................................................................25
1.8.1 Rating plate ........................................................................................................................25
2Assembly and installation........................................................................................................................27
2.1 Frequency inverter installation .........................................................................................................28
2.2 EMC kit ............................................................................................................................................29
2.3 Braking resistor (BR)........................................................................................................................32
2.3.1 Electrical data for braking resistors.....................................................................................33
2.3.2 Monitoring of the braking resistor .......................................................................................34
2.3.2.1 Monitoring with a temperature switch 34
2.3.2.2 Monitoring with current measurement and calculation 34
2.4 Chokes.............................................................................................................................................35
2.4.1 Mains chokes......................................................................................................................35
2.4.1.1 Mains choke SK CI5 35
2.4.2 Motor choke SK CO5..........................................................................................................37
2.5 Electrical Connection .......................................................................................................................38
2.5.1 Overview of connections ....................................................................................................39
2.5.2 Wiring guidelines................................................................................................................41
2.5.3 Electrical connection of power unit .....................................................................................42
2.5.3.1 Electromechanical brake 43
2.5.3.2 Mains connection (PE, L1, L2/N, L3) 43
2.5.3.3 Motor cable 44
2.5.3.4 Braking resistor (B+, B-) 45
2.5.3.5 DC coupling (B+, DC-) 45
2.5.4 Electrical connection of the control unit ..............................................................................48
2.6 Incremental encoder ........................................................................................................................56
2.7 Fans.................................................................................................................................................58
2.7.1 Removing the fan ...............................................................................................................58
2.7.2 Installing the fan .................................................................................................................58
3Options.......................................................................................................................................................59
3.1 Overview of option modules.............................................................................................................59
3.2 ControlBox SK TU5-CTR.................................................................................................................61
3.2.1 Control keys........................................................................................................................61
3.2.2 Display................................................................................................................................62
3.2.2.1 Displays 62
3.2.2.2 Operation 62
3.2.2.3 Status displays 63
3.2.3 Control................................................................................................................................63
3.2.4 Parameterisation ................................................................................................................64
3.3 Frequency addition and subtraction via control boxes .....................................................................66
3.4 Connection of multiple devices to one parametrisation tool.............................................................66
4Commissioning .........................................................................................................................................67
4.1 Factory settings................................................................................................................................67
4.2 Selecting the operating mode for motor control ...............................................................................69
4.2.1 Explanation of the operating modes (P300) .......................................................................69
4.2.2 Overview of controller parameter settings ..........................................................................71
4.2.3 Motor control commissioning steps ....................................................................................72
4.3 Minimum configuration of control connections .................................................................................73
4.4 Temperature sensors.......................................................................................................................74

NORDAC PRO (SK 500P) – Manual with installation instructions
6 BU 0600 en-3221
5Parameter...................................................................................................................................................76
5.1 Parameter overview.........................................................................................................................80
5.1.1 Operating display................................................................................................................83
5.1.2 DS402 parameter...............................................................................................................85
5.1.3 Basic parameter .................................................................................................................98
5.1.4 Motor data / characteristic curve parameters....................................................................106
5.1.5 Control parameters...........................................................................................................117
5.1.6 Control terminals ..............................................................................................................127
5.1.7 Additional parameters.......................................................................................................156
5.1.8 Positioning........................................................................................................................183
5.1.9 Information........................................................................................................................184
6Operating status messages ...................................................................................................................201
6.1 Display of messages......................................................................................................................202
6.2 Messages.......................................................................................................................................205
7Technical data .........................................................................................................................................217
7.1 General Data..................................................................................................................................217
7.2 Technical data for determining the energy efficiency level.............................................................218
7.3 Electrical data ................................................................................................................................219
7.3.1 Electrical data 230 V.........................................................................................................219
7.3.2 Electrical data 400 V.........................................................................................................221
8Additional information............................................................................................................................224
8.1 Setpoint processing........................................................................................................................224
8.2 Process controller ..........................................................................................................................226
8.2.1 Process controller application example ............................................................................227
8.2.2 Process controller parameter settings ..............................................................................228
8.3 Electromagnetic compatibility (EMC) .............................................................................................229
8.3.1 General Provisions ...........................................................................................................229
8.3.2 EMC evaluation................................................................................................................229
8.3.3 EMC of device..................................................................................................................230
8.3.4 EU Declaration of Conformity...........................................................................................233
8.4 Reduced output power...................................................................................................................234
8.4.1 Increased heat dissipation due to pulse frequency...........................................................234
8.4.2 Reduced overcurrent due to time .....................................................................................235
8.4.3 Reduced overcurrent due to output frequency .................................................................236
8.4.4 Reduced output current due to low voltage ......................................................................237
8.4.5 Reduced output current due to the heat sink temperature................................................237
8.5 Operation on the FI circuit breaker.................................................................................................237
8.6 NORD system bus .........................................................................................................................238
8.6.1 Description........................................................................................................................238
8.6.2 NORD system bus participants.........................................................................................240
8.6.3 Physical structure.............................................................................................................240
8.7 Options for optimising the energy efficiency...................................................................................241
8.8 Scaling of set point/actual values...................................................................................................242
8.9 Definition of setpoint and actual value processing (frequencies) ...................................................243
9Maintenance and servicing information................................................................................................244
9.1 Maintenance Instructions ...............................................................................................................244
9.2 Service notes.................................................................................................................................245
9.3 Abbreviations .................................................................................................................................246

List of illustrations
BU 0600 en-3221 7
List of illustrations
Figure 1: Installation spacings............................................................................................................................... 27
Figure 2: Frequency inverter with bottom-mounted braking resistor SK BRU5-... ................................................. 32
Figure 3: Illustration of a DC-coupling ................................................................................................................... 46
Figure 4: Diagram of a DC coupling with an input/feedback unit........................................................................... 47
Figure 5: ControlBox menu structure..................................................................................................................... 65
Figure 6: Motor type plate...................................................................................................................................... 68
Figure 7: Explanation of parameter description..................................................................................................... 79
Figure 8: Setpoint processing.............................................................................................................................. 225
Figure 9: Process controller flow diagram ........................................................................................................... 226
Figure 10: Wiring recommendation...................................................................................................................... 232
Figure 11: Heat losses due to pulse frequency.................................................................................................... 234
Figure 12: Reduced output current due to low voltage ........................................................................................ 237
Figure 13: Example of the structure of a NORD system bus............................................................................... 239
Figure 14: Energy efficiency due to automatic flux optimisation.......................................................................... 241

NORDAC PRO (SK 500P) – Manual with installation instructions
8 BU 0600 en-3221
List of tables
Table 1: Version list................................................................................................................................................. 3
Table 2: Overview of FI characteristics.................................................................................................................. 12
Table 3: Warning symbols on the product ............................................................................................................. 22
Table 4: Standards and approvals......................................................................................................................... 23
Table 5: Technical data bottom mounted braking resistor SK BRU5-.................................................................... 33
Table 6: Technical data chassis braking resistor SK BR2-.................................................................................... 33
Table 7: Technical details of the braking resistor temperature switch ................................................................... 33
Table 8: Tools........................................................................................................................................................ 42
Table 9: Connection data ...................................................................................................................................... 42
Table 10: Colour and contact assignments for NORD TTL / HTL incremental encoders....................................... 57
Table 11: EMC comparison between EN 61800-3 and EN 55011....................................................................... 230
Table 12: EMC, max. shielded motor cable length with regard to compliance with the limit value classes ......... 231
Table 13: Overview according to product standard EN 61800-3 ........................................................................ 231
Table 14: Overcurrent relative to time ................................................................................................................. 235
Table 15: Overcurrent relative to pulse and output frequency............................................................................. 236
Table 16: Scaling of set/actual values (selection)................................................................................................ 242
Table 17: Processing of setpoints and actual values in the frequency inverter ................................................... 243

1 General
BU 0600 en-3221 9
1 General
The NORDAC PRO (SK 500P - SK 550P) series is based on the tried and tested NORD platform. The
frequency inverters are characterised by their compact design and optimum control characteristics,
and have uniform parametrisation.
The frequency inverters have sensorless current vector control with a wide range of settings. In
combination with suitable motor models, which always provide an optimised voltage/frequency ratio,
all three-phase asynchronous motors that are suitable for inverter operation and permanently excited
synchronous motors can be driven. For the drive unit, this means very high starting and overload
torques with constant speed.
The power range is from 0.25 kW to 22 kW.
This series of frequency inverters can be adapted to individual requirements by means of modular
assemblies.
This manual is based on the device software as stated in the version list (see P707). If the frequency
inverter uses a different software version, this may cause differences. If necessary, the current manual
can be downloaded from the Internet (http://www.nord.com/).
Additional descriptions exist for optional functions and bus systems (http://www.nord.com/).
Information
Accessories
The accessories that are mentioned in the manual are also subject to changes. Current details of
these are included in separate data sheets, which are listed under www.nord.com under the heading
Documentation → Manuals → Electronic drive technology → Techn. Info / Data sheet. The data
sheets available at the date of publication of this manual are listed by name in the relevant sections
(TI ...).
Information
As of firmware version 1.3R0, only processors with large memories are supported. This version is
therefore not compatible with older devices and hardware status AAA (Chap. 1.8.1 "Rating plate").

NORDAC PRO (SK 500P) – Manual with installation instructions
10 BU 0600 en-3221
1.1 Device characteristics
The NORDAC PRO series is available in various versions. The following gives an overview of the
essential characteristics of the particular versions.
Characteristic SK … 500P/510P 530P 550P Additional information
Operating manual BU 0600
Legend
x = Present - = Not present O = Optionally available
Sensorless current vector control
(high starting torque and precise
control of motor speed) x x x
Asynchronous motor operation x x x
Operation of PMSM synchronous
motors
(Permanent Magnet Synchronous
Motor)
x x X
Operation permissible on network
types: TN, TT, IT1) x x x (Chap. 2.5.3.2)
DC coupling / Link voltage coupling
x
x
x
(Chap. 2.5.3.5)
Brake management for mechanical
holding brake x x x (Chap. 2.5.3.1)
Brake chopper (braking resistor
optional) x x x (Chap. 2.5.3.4)
Integrated EMC mains filter for
Class A1 / Category C2 limits x x x (Chap. 8.3)
Can be mounted next to each other
without additional spacing x x x (Chap. 2)
Extensive monitoring functions
x
x
x
(Chap. 7)
Status LEDs (FI / Bus)
x / x
x / x
x / x
(Chap. 6.1)
Status LEDs ((Industrial Ethernet)
-
-
x

BU 0620
Stator resistance measurement
x
x
x
(Chap. 5.1.4), P220
Automatic optimisation of precise
motor data x x x
Internal 24 V power supply unit to
supply the control board x x x2)
An additional power supply
is required for the bus
communication.

1 General
BU 0600 en-3221 11
Characteristic SK … 500P/510P 530P 550P Additional information
Operating manual BU 0600
Legend
x = Present - = Not present O = Optionally available
External connection for the control
board voltage 24 V DC supply with
automatic switch-over between the
internal and external 24 V DC
power supply and supply for the
Ethernet interface.
Note: Note the restrictions for
individual parameters
– x x
(Chap. 2.5.4)
RS-232 / -485 diagnostic interface /
-485 via RJ12 connection x x x
RS-232 diagnostic interface via
USB-C connection3) – x x
USS and Modbus RTU on board
x
x
x
(CANopen ) on board x x x
Industrial Ethernet on board
–
–
x

BU 0620
Plug in data storage via microSD
card (for exchange of parameters) – x X
See "microSD-card X18"
/ "P550"
Parameters pre-set with standard
values x x x (Chap. 5)
4 switchable parameter sets
x
x
x
Parameterisation with
NORDCON-Software,
NORDCON APP or external
ParameterBox SK …-3H / -3E via
RJ12
x x x
Parameterisation possible with
NORDCON software via USB
interface without mains connection
or 24 V DC power supply 3).
– x x
Programmable direct current
braking x x x (Chap. 5.1.3), P108
Energy-saving function (automatic
load-dependent flux optimisation) x x x (Chap. 8.7)

NORDAC PRO (SK 500P) – Manual with installation instructions
12 BU 0600 en-3221
Characteristic SK … 500P/510P 530P 550P Additional information
Operating manual BU 0600
Legend
x = Present - = Not present O = Optionally available
Load monitor
x
x
x
(Chap. 5.1.7), P525-P529
Lifting gear functionality x x x (Chap. 5.1.3), P107, P114
Process controller / PID controller
x
x
x
(Chap. 8.2)
Safe pulse block (STO / SS1-t)4),
two channel 5) –5) O O BU 0630
PLC functionality x x x BU 0550
Integrated POSICON positioning
control x x x BU 0610
2 x Industrial Ethernet via RJ45 plug
–
–
x

BU 0620
CANbus/CANopen interface via
connection terminals x x x (Chap. 2.5.4)
HTL encoder connection6.7)
x
x
x
(Chap. 2.5.4)
Speed feedback via incremental
encoder input (TTL)6) – x x
CANopen absolute encoder
evaluation x x x
BU 0610
Universal encoder interface (SSI,
BISS, Hiperface, EnDat and
SIN/COS)8) – O O
Number of digital inputs / outputs9)
5 / –
6 / 2
6 / 2
(Chap. 2.5.4)
Number of analogue inputs /
outputs 2 / 1 2 / 1 2 / 1
Number of relay messages
2
2
2
PTC input with potential
isolation 10) – 1 1
Removable control panel
(SK TU5-CTR) O O O (Chap. 3.2)
Function extension with customer
unit SK CU5-… 11) - x x (Chap. 3.1)
1)
IT network; manual adaptation of hardware configuration required
2)
Connection terminal X6 for external 24-V-supply
3) No access to Ethernet parameters without external 24-V-supply
4)
Optional SK CU5-STO or CU5-MLT interface
5)
SK 510P: STO and SS1-t, single channel, on board
6)
for speed control and/or positioning (POSICON)
7) Max. length 10 m for ASM and PMSM
8)
Optional SK CU5-MLT interface
9)
PTC evaluation via digital input (DI5) possible
10)
PTC evaluation via digital input (DI5) also possible
11) 1 x per FI
Table 2: Overview of FI characteristics

1 General
BU 0600 en-3221 13
1.2 Delivery
Examine the frequency inverter for transport damage or loose components immediately on delivery /
unpacking.
In case of damage, contact the carrier immediately and arrange for a careful survey.
Important! This also applies if the packaging is undamaged.
1.3 Scope of delivery
NOTICE
Defect in the device
Use of unauthorised accessories and options, e.g. options for other inverter series, may result in
defects of connected components.
• Only use accessories and options which are explicitly intended for use with this inverter and which
are stated in these instructions.
Standard version: • IP20
• Integrated brake chopper
• Integrated EMC mains filter for limit curve A1, Category C2
• Blank cover for technology unit slot
• Covering for the control terminals
• Standard control connection shielding plate (fitted)
• Standard motor connection shielding plate (enclosed for SK 530P and higher)
• Operating instructions on CD

NORDAC PRO (SK 500P) – Manual with installation instructions
14 BU 0600 en-3221
Available accessories:
Designation Example Description
Control and parametrisation
options
Technology units for
attachment to the inverter
For commissioning, parametrisation and control
of the inverter,
SK TU5-CTR
(Chap. 3.2)
Technology units for installation
in the control cabinet
For commissioning, parametrisation and control
of the inverter,
SK CSX-3E
BU 0040
Hand-held control boxes
For controlling the inverter,
Model SK POT- …
BU 0040
NORDCON
MS Windows ® - based software
For commissioning, parametrisation and control
of the inverter
www.nord.com
NORDCON
NORDAC ACCESS BT
NORDAC ACCESS BT in combination with the
NORDCON APP is used for the mobile
parameterisation of the device.
BU 0960
NORDCON APP
MicroSD card, 128 MB
Part No.:
275292200
Plug-in data storage for parameter exchange
SK TIE5-SD-Card-IND1
USB cable
Part No.:
275292100
Connects the frequency inverter to a PC
SK CE-USB-C-PC-USB-3m

1 General
BU 0600 en-3221 15
Designation Example Description
Braking resistor
Chassis-mounted braking resistor
Dissipates generated energy from the drive
system by conversion into heat, e.g. during
braking
Type SK BR2…
(Chap. 2.5.3.4)
Bottom-mounted braking resistor
Dissipates generated energy from the drive
system by conversion into heat, e.g. during
braking
Type SK BRU5…
(Bottom mounting)
(Chap. 2.5.3.4)
Choke
Motor choke
Reduces interference (EMC) from the motor
cable and compensates for cable capacitances
Type SK CO5…
(Chap. 2.4.2)
Mains choke
Reduces current harmonics and charging
currents on the mains side
Type SK CI5…
(Chap. 2.4.1.1)
EMC kit
Facilitates EMC-compliant installation and
connection
Type SK HE5-…
TI 2752923xx
Electronic brake rectifier
Directly controls electro-mechanical brakes
SK EBGR-1
TI059_19140990

NORDAC PRO (SK 500P) – Manual with installation instructions
16 BU 0600 en-3221
Designation Example Description
IO extension
External IO extension (analog and digital)
SK EBIOE-2
TI 275900210
Signal converter ± 10 V
In preparation
Adapter module V/F converter
Signal converter for conversion of the 0 – 10 V
analogue signals from a potentiometer into pulse
signals for evaluation at the digital input of the
frequency inverter
Type connection module V/F converter
TI 278910310
Software (Free download)
NORDCON
MS Windows ® - based
software
For commissioning, parametrisation and control
of the inverter
www.nord.com
NORDCON
NORDCON APP
The NORDCON APP in combination with the
NORDAC ACCESS BT is used for mobile
commissioning and control of the inverter.
BU 0960
ePlan macros
Macros for producing electrical circuit diagrams
www.nord.com
ePlan
Device master data
Device master data / device description files for
NORD field bus options
www.nord.com
NORD field bus files
S7- standard module for
PROFINET IO
Standard modules for NORD frequency
converters
www.nord.com
S7_Files_NORD
Standard modules for the TIA
portal for PROFINET IO Standard modules for NORD frequency
converters
Available on request.

1 General
BU 0600 en-3221 17
1.4 Safety, installation and application information
Before working on or with the device, please read the following safety instructions extremely carefully.
Please pay attention to all other information from the device manual.
Non-compliance can result in serious or fatal injuries and damage to the device or its surroundings.
These safety instructions must be kept in a safe place!
1. General
Do not use defective devices or devices with defective or damaged housings or missing covers.
Otherwise there is a risk of serious or fatal injuries caused by electric shock or bursting electrical
components such as powerful electrolytic capacitors.
Unauthorised removal of covers, improper use, incorrect installation or operation causes a risk of
serious personal injury or material damage.
During operation, depending on their protection class, devices may have live bare components as well
as hot surfaces.
The device operates with a dangerous voltage. Dangerous voltage may be present at the supply lines,
contact strips and PCBs of all connecting terminals (e.g. mains input, motor connection), even if the
device is not working or the motor is not rotating (e.g. caused by electronic disabling, jamming of the
drive or a short circuit at the output terminals).
The device is not equipped with a mains switch and is therefore always live when connected to the
power supply. Voltages may therefore be connected to a connected motor at standstill.
Even if the drive unit has been disconnected from the mains, a connected motor may rotate and
possibly generate a dangerous voltage.
If persons come into contact with dangerous voltage such as this, there is a risk of an electric shock,
which can lead to serious or fatal injuries.
The fact that the status LED or other indicators are not illuminated does not indicate that the device
has been disconnected from the mains and is without voltage.
The heat sink and all other metal components can heat up to temperatures above 70°C.
Touching parts such as this can result in local burns to the body parts concerned (cooling times and
clearance from neighbouring components must be complied with).
All work on the device, e.g. transportation, installation, commissioning and maintenance work must be
carried out by qualified personnel (observe IEC 364 or CENELEC HD 384 or DIN VDE 0100 and
IEC 664 or DIN VDE 0110 and national accident prevention regulations). 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.
During all work on the device, take care that no foreign bodies, loose parts, moisture or dust enter or
remain in the device (risk of short circuit, fire and corrosion).
Further information can be found in this documentation.
Triggering of a circuit breaker
If the device is secured by a circuit breaker and if this was triggered, this may indicate that a residual
current was interrupted. A component (e.g. device, cable or plug connector) in this circuit may have
caused an overload (e.g. short circuit or earth fault).
A direct reset of the circuit breaker may lead to the circuit breaker not being triggered afterwards
although the fault cause is still present. As a result, any current flowing into the fault location may
cause overheating and ignite the surrounding material.

NORDAC PRO (SK 500P) – Manual with installation instructions
18 BU 0600 en-3221
After each triggering of a circuit breaker, all live components within this circuit must thus be visually
checked for defects and flashover tracks. Also check the connections at the device’s connection
terminals.
In case of no faults found or after the replacement of the defect components, switch on the power
supply by resetting the circuit breaker. Carefully observe the components keeping a safe physical
distance. As soon as you observe a malfunction (e.g. smoke, heat or unusual odours), the occurrence
of a new fault or if the status LED on the device does not light up, switch off the circuit breaker
immediately and disconnect the defect component from the mains. Replace the defect component.
2. Qualified specialist personnel
Within the meaning of this basic safety information, qualified specialist personnel are persons who are
familiar with the installation, assembly, commissioning and operation of the product and who have the
qualifications appropriate to their work.
In addition, the device and the accessories associated with it must only be installed and commissioned
by a qualified electrician. A qualified electrician is a person who, because of his/her technical training
and experience, has sufficient knowledge with regard to
• switching on, switching off, disconnection, earthing and labelling of electric circuits and devices,
• correct maintenance and use of protective devices according to specified safety standards.
3. Intended use – general
Frequency inverters are devices for industrial and commercial systems that are used to operate three-
phase asynchronous motors with squirrel-cage rotors and Permanent Magnet Synchronous Motors –
PMSM. These motors must be suitable for operation with frequency inverters, other loads must not be
connected to the devices.
The devices are components intended for installation in electrical systems or machines. They must
only be operated inside an enclosed control cabinet.
Technical data and information for connection conditions can be found on the rating plate and in the
documentation, and must be complied with.
The devices may only be used for safety functions which are described and explicitly approved.
CE-labelled devices fulfil the requirements of the Low Voltage Directive 2014/35/EU. The stated
harmonized standards for the devices are used in the declaration of conformity.
a. Supplement: Intended use within the European Union
When installed in machines, commissioning of the devices (i.e. commencement of proper use)
is prohibited until it has been ensured that the machine fulfils the provisions of EC Directive
2006/42/EC (Machinery Directive); EN 60204-1 must also be complied with.
Commissioning (i.e. start-up of proper use) is only permitted if the EMC directive (2014/30/EU)
has been complied with.
b. Supplement: Intended use outside the European Union
The local conditions of the operator for the installation and commissioning of the device must be
complied with at the usage location (see also “a. Supplement: Intended use within the European
Union”).

1 General
BU 0600 en-3221 19
4. Phases of life
Transport, storage
The information in the manual regarding transport, storage and correct handling must be complied
with.
The permissible mechanical and climatic ambient conditions (see technical data in the manual for the
device) must be complied with.
If necessary, suitable, adequately dimensioned means of transport (e.g. lifting gear, rope guides) must
be used.
Installation and assembly
The installation and cooling of the device must be implemented according to the regulations in the
corresponding documentation. The permissible mechanical and climatic ambient conditions (see
technical data in the manual for the device) must be complied with.
The device must be protected against impermissible loads. In particular, components must not be
deformed and/or insulation distances must not be changed. Touching of electronic components and
contacts must be avoided.
The device and its optional modules contain electrostatically sensitive components, which can be
easily damaged by incorrect handling. Electrical components must not be mechanically damaged or
destroyed.
Electrical connection
Ensure that the device and the motor are specified for the correct supply voltage.
Installation, maintenance and repair work must not be carried out unless the device has been
disconnected from the voltage and at least 5 minutes have elapsed since the mains was switched off!
(Due to charged capacitors, hazardous voltages may be present on the device for up to 5 minutes
after being switched off from the mains). Before starting work it is essential to check by measurement
that for all connection terminal contacts the connections are voltage-free.
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
or manual for the device.
Information regarding EMC-compliant installation such as shielding, earthing, location of filters and
routing of cables can be found in the documentation for the device and in the technical information
manual TI 80-0011. This information must always be observed even for devices with a CE label.
Compliance with the limit values specified in the EMC regulations is the responsibility of the
manufacturer of the system or machine.
In case of a fault, inadequate earthing may result in electric shock, possibly with fatal consequences.
The device may only be operated with effective earth connections which comply with local regulations
for large leakage currents (> 3.5 mA). Detailed information regarding connections and operating
conditions can be obtained from the technical Information manual TI 80-0019.
Connection of the supply voltage may directly or indirectly set the device into operation. Contact with
electrically live components may result in electric shock, possibly with fatal consequences.
All poles of cable connections (e.g. power supply) must always be disconnected.
Setup, troubleshooting and commissioning
When working on live devices, the applicable national accident prevention regulations must be
complied with.
Connection of the supply voltage may directly or indirectly set the device into operation. Contact with
electrically live components may result in electric shock, possibly with fatal consequences.

NORDAC PRO (SK 500P) – Manual with installation instructions
20 BU 0600 en-3221
The parametrisation and configuration of the devices must be selected so that no hazards can occur.
With certain setting conditions, the device or the motor which is connected to it may start automatically
when the mains are switched on. The machinery which it drives (press / chain hoist / roller / fan etc.)
may then make an unexpected movement. This may cause various injuries, including to third parties.
Before switching on the mains, secure the danger area by warning and removing all persons from the
danger area.
Operation
Where necessary, systems in which the devices 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.).
All covers must be kept closed during operation.
With certain setting conditions, the device or the motor which is connected to it may start automatically
when the mains are switched on. The machinery which it drives (press / chain hoist / roller / fan etc.)
may then make an unexpected movement. This may cause various injuries, including to third parties.
Before switching on the mains, secure the danger area by warning and removing all persons from the
danger area.
Due to its operation, the device produces noises within the audible frequency range. These noises
may cause long-term stress, discomfort and fatigue, with negative effects on concentration. The
frequency range or the noise can be shifted to a less disturbing or almost inaudible range by
adjustment of the pulse frequency. However, this may possibly result in derating (lower power) of the
device.
Maintenance, repair and decommissioning
Installation, maintenance and repair work must not be carried out unless the device has been
disconnected from the voltage and at least 5 minutes have elapsed since the mains was switched off!
(Due to charged capacitors, hazardous voltages may be present on the device for up to 5 minutes
after being switched off from the mains). Before starting the work, it is essential to check by
measurement that all contacts of the power plug connectors or the connection terminals are voltage-
free.
Disposal
The product and its parts and accessories must not be disposed of as domestic waste. At the end of
its life, the product must be properly disposed of according to the local regulations for industrial waste.
In particular, this product contains integrated semiconductor circuits (PCBs and various electronic
components, including high power electrolytic capacitors). In case of incorrect disposal there is a risk
of formation of toxic gases, which may cause contamination of the environment and direct or indirect
injuries (e.g. chemical burns). In the case of high power electrolytic capacitors, there is also a risk of
explosion, with the associated risk of injury.
5. Potentially explosive environment (ATEX)
The device is not approved for operation or maintenance work in potentially explosive environments
(ATEX).