Nord Drivesystems NORDAC PRO User manual

BU 0600 – en
NORDAC PRO (SK 500P)
Users Manual forFrequency Inverters

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
2 BU 0600 en-2319
Documentation
Designation:
BU 0600
Material No.: 6076002
Series: NORDAC PRO
Frequency inverter series: SK 500P, SK 510P, SK 530P, SK 550P
Frequency inverter types: SK 5xxP-250-123- ... SK 5xxP-221-123- (0.25 - 2.2 kW, 1~ 230 V,
output 3~ 230 V)
SK 5xxP-250-340- ... SK 5xxP-551-340- (0.25 - 5.5 kW, 3~ 400 V,
output 3~ 400 V)
Version list
Title,
Date
Order number FI software
version
Remarks
BU 0600,
June 2019
6076002 / 2319 V 1.0 R1 First issue.
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

Publisher
BU 0600 en-2319 3

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
4 BU 0600 en-2319
Table of Contents
1General.........................................................................................................................................................8
1.1 Device characteristics ........................................................................................................................9
1.2 Delivery ............................................................................................................................................12
1.3 Scope of delivery..............................................................................................................................12
1.4 Safety, installation and operating instructions..................................................................................16
1.5 Explanation of markings...................................................................................................................20
1.6 Warning information on the product .................................................................................................21
1.7 Standards and approvals .................................................................................................................22
1.7.1 UL and CSA approval.........................................................................................................22
1.8 Type code / nomenclature................................................................................................................23
1.8.1 Type plate...........................................................................................................................23
2Assembly and installation ........................................................................................................................25
2.1 Frequency inverter installation .........................................................................................................26
2.2 Braking resistor (BR)........................................................................................................................27
2.2.1 Electrical data for braking resistors.....................................................................................28
2.2.2 Dimensions of bottom-mounted braking resistor SK BRU5 ................................................29
2.2.3 Dimensions of chassis BR SK BR2 ....................................................................................29
2.2.4 Monitoring of the braking resistor .......................................................................................30
2.2.4.1 Monitoring with a temperature switch 30
2.2.4.2 Monitoring with current measurement and calculation 30
2.3 Chokes.............................................................................................................................................31
2.3.1.1 Input choke SK CI1-… 31
2.3.2 Output choke SK CO1 ........................................................................................................33
2.4 Line filter ..........................................................................................................................................34
2.4.1 Mains filter SK HLD ............................................................................................................34
2.5 Electrical Connection .......................................................................................................................35
2.5.1 Overview of connections ....................................................................................................36
2.5.2 Wiring guidelines ................................................................................................................38
2.5.3 Electrical connection of power unit .....................................................................................39
2.5.3.1 Electromechanical brake 40
2.5.3.2 Mains connection (PE, L1, L2/N, L3) 40
2.5.3.3 Motor cable (U, V, W, PE) 41
2.5.3.4 Braking resistor (B+, B-) 42
2.5.3.5 DC coupling (B+, DC-) 42
2.5.4 Electrical connection of the control unit ..............................................................................45
2.6 Colour and contact assignments for encoders .................................................................................51
2.7 RJ45 WAGO connection module .....................................................................................................53
3Options.......................................................................................................................................................54
3.1 Overview of option modules.............................................................................................................54
3.2 SK TU5-CTR ....................................................................................................................................56
3.2.1 Control keys........................................................................................................................56
3.2.2 Display................................................................................................................................57
3.2.2.1 Displays 57
3.2.2.2 Operation 57
3.2.2.3 Status displays 58
3.2.3 Control................................................................................................................................58
3.2.4 Parameterisation ................................................................................................................59
3.3 Frequency addition and subtraction via control boxes .....................................................................61
3.4 Connection of multiple devices to one parametrisation tool .............................................................61
4Commissioning .........................................................................................................................................62
4.1 Factory settings................................................................................................................................62
4.2 Selecting the operating mode for motor control ...............................................................................64
4.2.1 Explanation of the operating modes (P300) .......................................................................64
4.2.2 Overview of control parameter settings ..............................................................................66
4.2.3 Motor control commissioning steps ....................................................................................67
4.3 Minimum configuration of control connections .................................................................................68
4.4 Temperature sensors.......................................................................................................................69

Table of Contents
BU 0600 en-2319 5
5Parameter...................................................................................................................................................71
5.1 Parameter overview .........................................................................................................................75
5.1.1 Operating display................................................................................................................78
5.1.2 Basic parameter .................................................................................................................80
5.1.3 Motor data / characteristic curve parameters......................................................................88
5.1.4 Control parameters.............................................................................................................98
5.1.5 Control terminals ..............................................................................................................108
5.1.6 Additional parameters.......................................................................................................137
5.1.7 Positioning........................................................................................................................162
5.1.8 Information........................................................................................................................163
6Operating status messages ...................................................................................................................178
6.1 Display of messages......................................................................................................................179
6.2 Messages.......................................................................................................................................181
7Technical data .........................................................................................................................................191
7.1 General Data..................................................................................................................................191
7.2 Electrical data ................................................................................................................................192
7.2.1 Electrical data 230 V.........................................................................................................192
7.2.2 Electrical data 400 V.........................................................................................................194
8Additional information ............................................................................................................................196
8.1 Setpoint processing........................................................................................................................196
8.2 Process controller ..........................................................................................................................198
8.2.1 Process controller application example ............................................................................199
8.2.2 Process controller parameter settings ..............................................................................200
8.3 Electromagnetic compatibility (EMC) .............................................................................................201
8.3.1 General Provisions ...........................................................................................................201
8.3.2 EMC evaluation ................................................................................................................201
8.3.3 EMC of device ..................................................................................................................202
8.3.4 EU Declaration of Conformity ...........................................................................................204
8.4 Reduced output power...................................................................................................................205
8.4.1 Increased heat dissipation due to pulse frequency...........................................................205
8.4.2 Reduced overcurrent due to time .....................................................................................206
8.4.3 Reduced overcurrent due to output frequency..................................................................207
8.4.4 Reduced output current due to mains voltage ..................................................................208
8.4.5 Reduced output current due to the heat sink temperature................................................208
8.5 Operation on the FI circuit breaker.................................................................................................208
8.6 Energy Efficiency ...........................................................................................................................209
8.7 Standardisation of setpoint / target values .....................................................................................210
8.8 Definition of setpoint and actual value processing (frequencies) ...................................................211
9Maintenance and servicing information................................................................................................212
9.1 Maintenance Instructions ...............................................................................................................212
9.2 Service notes .................................................................................................................................213
9.3 Abbreviations .................................................................................................................................214

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
6 BU 0600 en-2319
List of illustrations
Figure 1: Installation spacings ............................................................................................................................... 25
Figure 2: Frequency inverter with bottom-mounted braking resistor SK BRU5-... ................................................. 27
Figure 3: Illustration of mounting the BRU5 on the frequency inverter .................................................................. 29
Figure 4: Illustration of a DC-coupling ................................................................................................................... 43
Figure 5: Diagram of a DC coupling with an input/feedback unit ........................................................................... 44
Figure 6: ControlBox menu structure..................................................................................................................... 60
Figure 7: Motor type plate...................................................................................................................................... 63
Figure 8: Explanation of parameter description ..................................................................................................... 74
Figure 9: LEDs – status displays on the device................................................................................................... 179
Figure 10: Setpoint processing............................................................................................................................ 197
Figure 11: Process controller flow diagram ......................................................................................................... 198
Figure 12: Wiring recommendation...................................................................................................................... 203
Figure 13: Heat losses due to pulse frequency ................................................................................................... 205
Figure 14: Output current due to mains voltage................................................................................................... 208
Figure 15: Energy efficiency due to automatic flux optimisation .......................................................................... 209

List of tables
BU 0600 en-2319 7
List of tables
Table 1: Version list................................................................................................................................................. 2
Table 2: Overview of FI characteristics.................................................................................................................. 11
Table 3: Warning information on the product......................................................................................................... 21
Table 4: Standards and approvals......................................................................................................................... 22
Table 5: Technical data bottom mounted braking resistor SK BRU5-.................................................................... 28
Table 6: Technical data chassis braking resistor SK BR2-... ................................................................................. 28
Table 7: Technical data, temperature switch for chassis braking resistor SK BR2-… ........................................... 28
Table 8: Dimensions of bottom-mounted braking resistor SK BRU5-... ................................................................. 29
Table 9: Dimensions of chassis brake resistor SK BR2-... .................................................................................... 29
Table 10: Input choke data for SK CI1-..., 3~ 480 V .............................................................................................. 32
Table 11: Output choke data for SK CO1-..., 3~ 240 V.......................................................................................... 33
Table 12: Output choke data for SK CO1-..., 3~ 480 V.......................................................................................... 34
Table 13: Mains filter HLD-.................................................................................................................................... 34
Table 14: Tools...................................................................................................................................................... 39
Table 15: Connection data .................................................................................................................................... 39
Table 16: Colour and contact assignments for NORD TTL / HTL incremental encoders....................................... 52
Table 17: RJ45 WAGO connection module........................................................................................................... 53
Table 18: Overview of technology units, ControlBox ............................................................................................. 54
Table 19: Overview of technology units, interfaces ............................................................................................... 54
Table 20: Overview of technology units and other option modules........................................................................ 54
Table 21: Temperature sensors, adjustment ......................................................................................................... 69
Table 22: EMC comparison between EN 61800-3 and EN 55011....................................................................... 202
Table 23: EMC, max. shielded motor cable length with regard to compliance with the limit value classes ......... 203
Table 24: Overview according to product standard EN 61800-3 ........................................................................ 203
Table 25: Overcurrent relative to time ................................................................................................................. 206
Table 26: Overcurrent relative to pulse and output frequency ............................................................................. 207
Table 27: Scaling of setpoints and actual values (Selection)............................................................................... 210
Table 28: Processing of setpoints and actual values in the frequency inverter ................................................... 211

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
8 BU 0600 en-2319
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 5.5 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 ...).

1 General
BU 0600 en-2319 9
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
forms: TN, TT, IT 1) x x x Section 2.5.3.2
DC coupling / Link voltage coupling x x x Section 2.5.3.5
Brake management for mechanical
holding brake x x x Section 2.5.3.1
Brake chopper (brake resistor
optional) x x x Section 2.5.3.4
Integrated EMC mains filter for
Class A1 / Category C2 limits x x x Section 8.3
Can be mounted next to each other
without additional spacing x x x Section 2
Extensive monitoring functions x x x Section 7
Status LEDs (FI / Bus) x / x x / x x / x Section 6.1
Status LEDs ((Industrial Ethernet) - - x BU 0620
Stator resistance measurement
x
x
x
Section 5.1.3, P220
Automatic determination of precise
motor data x x x
Internal 24 V power supply unit to
supply the control board x x x

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
10 BU 0600 en-2319
Characteristic SK … 500P/510P 530P 550P Additional information
Operating manual BU 0600
Legend
x = Present - = Not present O = Optionally available
External 24 V DC supply for the
control board voltage supply with
automatic switch-over between the
internal and external 24 V DC
power supply
– x x
Section 2.5.4
RS-232 diagnostic interface via
RJ12 connection x x x
RS-232 diagnostic interface via
USB-C connection – x x
RS-485 interface via RJ12
connection x 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 µSD card
(for exchange of parameters) – x x Section 2.5.4
Parameters pre-set with standard
values x x x Section 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 ("in the
box")
– x x
Programmable direct current
braking x x x Section 5.1.2, P108
Energy-saving function (automatic
load-dependent flux optimisation) x x x Section 8.6

1 General
BU 0600 en-2319 11
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 Section 5.1.6, P525-
P529
Lifting gear functionality x x x Section 5.1.2, P107,
P114
Process controller / PID controller x x x Section 8.2
Safe pulse block (STO / SS1)2),
two channel3) – O O BU 0630
PLC /SPS functionality
–
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 Section 2.5.4
HTL encoder connection 4) x x x
Section 2.6
Speed feedback via incremental
encoder input (TTL) 4) – x x
CANopen absolute encoder
evaluation x x x
BU 0610
Universal encoder interface (SSI,
BISS, Hiperface, EnDat and
SIN/COS)
– O O
Number of digital inputs / outputs 6)
5 / –
6 / 2
6 / 2
Section 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 7)
–
1
1
Removable control panel
(SK TU5-CTR) O O O Section 3.2
Function extension with customer
unit SK CU5-… 8) - x x Section 3.1
1) IT network; manual adaptation of hardware configuration required
2)
Optional SK CU5-STO interface
3)
SK 510P: STO and SS1, single channel, on board
4) for speed control and/or positioning (POSICON)
5) Optional SK CU5-ENC, SK CU5-MLT interface
6)
PTC evaluation via digital input (DI5) possible
7)
PTC evaluation via digital input (DI5) also possible
8) 1 x per FI
Table 2: Overview of FI characteristics

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
12 BU 0600 en-2319
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 delivery
NOTICE!
Defect in the device
Use of unapproved accessories and options, e.g. options from other device series (SK CSX--0) may
result in defects of the interconnected components.
• Only use accessories and options which are explicitly intended for use with this device and are
stated accordingly in this manual.
Standard version: • IP20
• Integrated brake chopper
• Integrated EMC line filter for limit curve A1, or Category C2
• Blank cover for technology unit slot
• Covering for the control terminals
• Operating instructions on CD

1 General
BU 0600 en-2319 13
Available accessories:
Designation Example Description
Control and parametrisation options
Technology units for
attachment to the inverter
For commissioning, parametrisation and control
of the device.
SK TU5-CTR
Section 3.2
Technology units for
installation in the control
cabinet
For commissioning, parametrisation and control
of the FI.
Type SK CSX-3E, SK PAR-3E
BU 0040
Hand-held control boxes
For controlling the device,
Model SK POT- …
BU 0040
NORDCON
MS Windows ® - based
software
For commissioning, parametrisation and control
of the FI.
www.nord.com
NORDCON
NORDAC ACCESS BT
NORDAC ACCESS BT in combination with the
NORDCON APP is used for mobile
parameterisation of the FI.
BU 0960
NORDCON APP

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
14 BU 0600 en-2319
Designation Example Description
Braking resistor
Chassis-mounted brake resistor
Dissipation of generated energy from the drive
system by conversion into heat. Energy is
generated e.g. by braking processes,
Type SK BR2- …
Section 2.5.3.4
Bottom-mounted brake resistor
See
Chassis braking resistor,
Type SK BRU5- …
Section 2.5.3.4
Choke
Output choke
Reduction of radiated interference (EMC) from
the motor cable, compensation of cable
capacitances,
Type SK CO1- …
Section 2.3.2
Input choke
Reduction of mains-induced harmonic
components and charging currents,
Type SK CI1…
Section 2.3.1.1
Mains filter
Chassis-mounted mains filter
Reduction of radiated interference (EMC)
Type SK HLD …
Section Fehler! Verweisquelle konnte nicht
gefunden werden.
Electronic brake rectifier
Direct control of electro-mechanical brakes
SK EBGR-1
Link

1 General
BU 0600 en-2319 15
Designation Example Description
IO extension
External IO extension (analogue and digital)
SK EBIOE-2
Link
Signal converter ± 10 V
Signal converter from bipolar to unipolar
analogue signals
Type signal converter ± 10 V
Link
Connection module V/F converter
Signal converter for conversion of the 0 – 10 V
customer unit signals from a potentiometer into
pulse signals for evaluation at the digital input of
the frequency inverter
Type connection module V/F converter
Link
Software (Free download)
NORDCON
MS Windows ® - based
software
For commissioning, parametrisation and control
of the FI.
www.nord.com
NORDCON
NORDCON APP
The NORDCON APP in combination with the
NORDAC ACCESS BT is used for mobile
commissioning, parameterisation and control of
the FI.
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 fieldbus 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

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
16 BU 0600 en-2319
1.4 Safety, installation and operating instructions
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 (e.g.
blind plugs for cable glands). 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. An optional
mains connection outlet is also live.
Even if the drive unit has been disconnected from the mains, a connected motor may rotate and
possibly generate a dangerous voltage.
If you 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.
Power plug connectors must not be pulled out while they are connected to the power supply. Failure to
comply with this may cause arcing, which in addition to the risk of injury, also results in a risk of
damage or destruction of the device.
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 as well as the surfaces of power plug connectors may
heat up to temperatures in excess of 70°C.
Touching these parts 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.

1 General
BU 0600 en-2319 17
2. Qualified experts
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.
Furthermore, the device and the associated accessories may only be installed and started up by
qualified electricians. An electrician is a person who, because of their technical training and
experience, has sufficient knowledge with regard to
• switching on, switching off, isolating, earthing and marking power circuits and devices,
• proper maintenance and use of protective devices in accordance with defined safety standards.
3. Correct purpose of use – general
The frequency inverters are devices for industrial and commercial systems used for the operation of
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.
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: Correct purpose of use within the European Union
When installed in machines, the devices must not be commissioned (i.e. commencement of
proper use) 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: Correct purpose of 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: Correct purpose of use within the
European Union").
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.

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
18 BU 0600 en-2319
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, the equipment may continue to carry hazardous voltages for up to
5 minutes after being switched off at the mains). Before starting work it is essential to check by
measurement that all contacts of the power plug connections or the connection are voltage-free.
The electrical installation must be implemented as per 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 devices and in the technical information
manual TI 80-0011. CE marked devices must also comply with these instructions. 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, insufficient earthing may cause an electric shock with possibly fatal consequences if
the device is touched.
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.
The voltage supply of the device may directly or indirectly put it into operation, or touching electrically
conducting components may then cause an electric shock with possible fatal consequences.
All phases of all power connections (e.g. power supply) must always be disconnected.
Set-up, troubleshooting and commissioning
When working on live devices, the applicable national accident prevention regulations must be
complied with (e.g. BGV A3, formerly VBG 4).
The voltage supply of the device may directly or indirectly put it into operation, or touching electrically
conducting components may then cause an electric shock with possible fatal consequences.
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.

1 General
BU 0600 en-2319 19
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, the equipment may continue to carry hazardous voltages for up to
5 minutes after being switched off at the mains). Before starting work it is essential to check by
measurement that all contacts of the power plug connections or the connection are voltage-free.
For further information, please refer to the manual for the device.
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 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 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).

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
20 BU 0600 en-2319
1.5 Explanation of markings
DANGER
Indicates an immediate danger, which may result in death or very serious injury if it is not avoided.
WARNING
Indicates a dangerous situation, which may result in death or serious injury if it is not avoided.
CAUTION
Indicates a dangerous situation, which may result in minor injuries if it is not avoided.
NOTICE
Indicates a situation, which may result in damage to the product or its environment if it is not avoided.
Information
Indicates hints for use and especially important information to ensure reliability of operation.