Nord Drivesystems SK 300P Series User manual

BU 0800 – en
NORDAC ON / ON+ (SK 3xxP)
Manual with installation instructions

NORDAC ON / ON+ (SK 3xxP) – Manual with installation instructions
2 BU 0800 en-4521
Documentation
Title:
BU 0800
Order no.:
6078002
Series:
SK 3xxP
Device series:
SK 300P, SK 301P, SK 310P, SK 311P
Device types:
SK 3xxP-360-340-A … SK 3xxP-950-340-A 0.37 kW – 0.95 kW, 3~ 400 V
Version list
Title,
Date
Order number Software version
of device
Remarks
BU 0800,
November 2021
6078002/ 4521
V 1.2 R5
First edition
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 0800 en-4521 3

NORDAC ON / ON+ (SK 3xxP) – Manual with installation instructions
4 BU 0800 en-4521
Table of Contents
1General.........................................................................................................................................................8
1.1 Overview ............................................................................................................................................9
1.2 Delivery ............................................................................................................................................10
1.3 Scope of delivery..............................................................................................................................11
1.4 Presentation conventions.................................................................................................................11
1.4.1 Warning information ...........................................................................................................11
1.4.2 Other information................................................................................................................11
1.4.3 Text markings.....................................................................................................................11
1.5 Safety, installation and application information ................................................................................12
1.6 Warning and hazard information ......................................................................................................17
1.6.1 Warning and hazard information on the product.................................................................17
1.6.2 Warning information on the upper shell..............................................................................17
1.7 Standards and approvals .................................................................................................................18
1.7.1 UL and CSA approval.........................................................................................................18
1.8 Type code / nomenclature................................................................................................................20
1.8.1 Name plate .........................................................................................................................20
2Assembly and installation ........................................................................................................................21
2.1 Installation........................................................................................................................................21
2.2 Dimensions NORDAC ON, motor-mounted .....................................................................................22
2.3 Dimensions NORDAC ON+, motor-mounted ...................................................................................23
2.4 Dimensions NORDAC ON and NORDAC ON+, wall-mounted ........................................................24
2.5 Connections .....................................................................................................................................25
2.5.1 NORDAC ON motor-mounted, Size 1 ................................................................................25
2.5.2 NORDAC ON motor-mounted, Size 2 ................................................................................26
2.5.3 NORDAC ON+ motor-mounted, Size 2 ..............................................................................27
2.5.4 NORDAC ON wall-mounted, Size 1 ...................................................................................28
2.5.5 NORDAC ON and NORDAC ON+, wall-mounted, Size 2...................................................29
2.6 Electrical Connection .......................................................................................................................30
2.6.1 Mains connection................................................................................................................30
2.6.2 Daisy chain connection.......................................................................................................30
2.6.3 Motor connection ................................................................................................................31
2.6.4 Wiring guidelines ................................................................................................................32
2.6.5 Electrical connection of power unit .....................................................................................33
2.6.5.1 Mains connection 33
2.6.5.2 Motor cable 34
2.6.5.3 Braking resistor (optionally with size 2 and above) 34
2.6.5.4 Electromechanical brake (optionally with size 2 and above)) 34
2.6.6 Electrical connection Ethernet communication and digital input/outputs ............................36
2.6.6.1 Control connection details 38
2.7 Diagnostic connection......................................................................................................................39
2.8 Encoder............................................................................................................................................40
3Display .......................................................................................................................................................43
3.1 LEDs ................................................................................................................................................43
3.1.1 Display of M1 and M2 when using EtherCAT.....................................................................43
3.1.2 Display of M1 and M2 when using EthernetIP....................................................................44
3.1.3 Display of M1 and M2 when using PROFINET...................................................................45
3.1.4 Display M3..........................................................................................................................45
3.1.5 Display of M4 and M5.........................................................................................................46
3.2 Diagnostic LED ................................................................................................................................46
4Commissioning .........................................................................................................................................47
4.1 Starting up the device ......................................................................................................................47
4.2 Selecting the operating mode for motor control ...............................................................................48
4.2.1 Explanation of the operating modes (P300) .......................................................................48
4.2.2 Overview of controller parameter settings ..........................................................................50
4.2.3 Motor control commissioning steps ....................................................................................51
5Parameter...................................................................................................................................................52
5.1 Parameter overview .........................................................................................................................55

Table of Contents
BU 0800 en-4521 5
5.1.1 Operating displays..............................................................................................................58
5.1.2 Basic parameters................................................................................................................60
5.1.3 Motor data ..........................................................................................................................65
5.1.4 Speed control .....................................................................................................................75
5.1.5 Control terminals ................................................................................................................83
5.1.6 Additional parameters.........................................................................................................94
5.1.7 Information........................................................................................................................108
6Operating status messages ...................................................................................................................117
6.1 Display of messages......................................................................................................................117
6.2 Messages.......................................................................................................................................118
6.3 FAQ operational problems .............................................................................................................130
7Technical data .........................................................................................................................................131
7.1 General frequency inverter data.....................................................................................................131
7.2 Technical data for determining the energy efficiency level.............................................................132
7.2.1 Electrical data 3~400 V.....................................................................................................133
7.2.1.1 NORDAC ON, Size 1 133
7.2.1.2 NORDAC ON, Size 2 133
7.2.1.3 NORDAC ON+, Size 2 133
8Additional information ............................................................................................................................134
8.1 Electromagnetic compatibility (EMC) .............................................................................................134
8.1.1 General Provisions ...........................................................................................................134
8.1.2 EMC evaluation ................................................................................................................135
8.1.3 EMC of device ..................................................................................................................136
8.1.4 EU Declaration of Conformity ...........................................................................................138
8.2 Reduced output power...................................................................................................................139
8.2.1 Derating depending on the pulse frequency .....................................................................139
8.2.2 Reduced overcurrent due to time .....................................................................................140
8.2.3 Reduced overcurrent due to output frequency..................................................................141
8.2.4 Reduced output current due to low voltage ......................................................................142
8.2.5 Reduced output current due to the heat sink temperature................................................142
8.3 Operation on the FI circuit breaker.................................................................................................142
8.4 Options for optimising the energy efficiency...................................................................................143
8.5 Scaling of set point/actual values...................................................................................................144
8.6 Definition of set and actual value processing (frequencies) ...........................................................145
8.7 Connection accessories .................................................................................................................146
8.7.1 Motor cable.......................................................................................................................146
8.7.2 Low voltage cable.............................................................................................................146
8.7.3 Daisy chain cable .............................................................................................................146
8.7.4 Encoder cables.................................................................................................................146
9Maintenance and servicing information................................................................................................147
9.1 Maintenance information................................................................................................................147
9.1.1 Replace upper part of the device......................................................................................148
9.1.1.1 Dismantle upper part of the device 149
9.1.1.2 Mount upper part of the device 149
9.1.1.3 Replacement material 150
9.2 Service notes .................................................................................................................................151
9.3 Abbreviations .................................................................................................................................152

NORDAC ON / ON+ (SK 3xxP) – Manual with installation instructions
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List of illustrations
Figure 1: Installation positions, motor with mounted frequency inverter ................................................................ 21
Figure 2: Explanation of parameter description ..................................................................................................... 57
Figure 3: Heat losses due to pulse frequency ..................................................................................................... 139
Figure 4: Reduced output current due to low voltage .......................................................................................... 142
Figure 5: Energy efficiency due to automatic flux optimisation ............................................................................ 143

List of tables
BU 0800 en-4521 7
List of tables
Table 1: Warning and hazard information on the product...................................................................................... 17
Table 2: Standards and approvals......................................................................................................................... 18
Table 3: FAQ operational problems..................................................................................................................... 130
Table 4: EMC comparison between EN 61800-3 and EN 55011......................................................................... 135
Table 5: Overview according to product standard EN 61800-3 .......................................................................... 137
Table 6: Overcurrent relative to time ................................................................................................................... 140
Table 7: Overcurrent relative to pulse and output frequency ............................................................................... 141
Table 8: Set and actual value processing in the frequency inverter..................................................................... 145

NORDAC ON / ON+ (SK 3xxP) – Manual with installation instructions
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1 General
The SK 300P 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 0,37 kW to 0,95 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 ...).
The device is either mounted directly on a motor or in the vicinity of the motor (on the wall or on a
machine frame).
All electrical connections (power connections and control connections) are made with plug connectors.
This simplifies the installation of the device.
Parameters can be accessed as follows:
• Via Ethernet connection
The three Ethernet dialects Profinet, EtherNet/IP and EtherCAT are available for this.
• Via the diagnostic port D1
The diagnostic port is designed as an RJ12 port and offers the possibility of using the following via
an internal RS232/RS485 interface
– an optional SimpleBox or ParameterBox, or
– the NORDAC ACCESS BT (SK TIE5 BT stick), or
– a PC with the installed NORDCON software.
The parameter settings modified by the operator are backed up in the integrated, non-volatile memory
of the device.
The device is configured according to the customer’s individual requirements. The device equipment is
therefore realised ex works. Later retrofitting of options or device conversions are not planned.

1 General
BU 0800 en-4521 9
Information
The device does not need to be opened at any time during its service life. All mounting, installation
and commissioning works are only done on the closed device.
• Assembly is done via freely accessible mounting holes.
• Electrical connection is exclusively established via plug connectors.
• Operational settings are made via parameter adjustments.
• B
lind plugs may only be removed for works in connection with commissioning and must be
properly replaced afterwards.
• Diagnostic LEDs for displaying switching and operating states are externally visible.
• The cover cap of the diagnostic port D1 only requi
res removal for the connection of
parameterisation tools such as a PC or ParameterBox.
After successful parameterisation, the
cover cap must be replaced.
1.1 Overview
Basic characteristics of the NORDAC ON
• High starting torque and precise motor speed control by means of sensorless current vector control
• Mounting on the motor or close-to-motor mounting as wall mounting
• Permissible ambient temperature -30°C to 40°C (pay attention to technical data)
• Integrated EMC mains filter
• External 24 V supply
• Four separate online switchable parameter sets
• Four digital inputs, two of them usable as digital outputs
• LEDs for diagnosis (including signal statuses DIs/DOs)
• RS232/RS485 interface via RJ12 port
• Operation of three-phase asynchronous motors (ASM)
• Integrated PLC BU 0550
• Integrated Industrial Ethernet Interface BU 0820
• Optional: Connection facility for functional safety (only size 2 and higher)
• Optional: Internal braking resistor (only size 2 and higher)
Basic characteristics of the NORDAC ON+
• IE5+ motors operation
• All basic characteristics of the NORDAC ON
• In addition: RS 485 encoder interface for positioning tasks
• Optional: nsd tupH surfaces for the food industry
Optional features
The FI can be individually adapted to the drive task. For this, a comprehensive selection of interfaces,
plug connections and control elements are available, which can be used during the manufacture of the
FI according to the customer's requirements.
Depending on the configuration, the meaning of the individual LEDs, function or assignment of
individual plug connectors or the function of control elements (e.g. switches) may differ. The possible
combinations will be illustrated and explained in the course of this manual. The individual configuration
of the FI can be identified using the type plate and can be compared with the details in the manual.

NORDAC ON / ON+ (SK 3xxP) – Manual with installation instructions
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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 General
BU 0800 en-4521 11
1.3 Scope of delivery
NOTICE
Defect in the device
Use of impermissible accessories and options (e.g. also options for other inverter series) may result in
defects of interconnected components.
• Only use accessories and options which are explicitly intended for use with this device and stated
in this manual.
Standard version: • IP55 version
• Operating instructions as PDF file on CD ROM including NORDCON, (PC
parametrisation software)
1.4 Presentation conventions
1.4.1 Warning information
Warning information for the safety of users are marked as follows:
DANGER
This warning information warns of danger to persons that results in severe injuries or death.
WARNING
This warning information warns of danger to persons that could result in severe injuries or death.
CAUTION
This warning information warns of danger to persons that could usually result in moderate injuries.
NOTICE
This warning information warns of material damage.
1.4.2 Other information
Information
This information shows tips and important information.
1.4.3 Text markings
The following markings are used to differentiate between various types of information:

NORDAC ON / ON+ (SK 3xxP) – Manual with installation instructions
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Text
Type of information Example Marking
Instructions
1.
2.
Instructions whose sequence must be complied with
are numbered sequentially.
Bullet points
•
Bullet points are marked with a dot.
Parameter
P162
Parameters are indicated by a “P” prefix, a three-
digit number and bold lettering.
Arrays [-01] Arrays are indicated by square brackets.
Factory settings
{ 0.0 }
Factory settings are indicated by curly brackets.
Software descriptions
“Cancel”
Menus, fields, windows, buttons and tabs are
indicated by quotation marks and bold lettering.
Numbers
Type of information Example Marking
Binary numbers
100001b
Binary numbers are indicated by the suffix “b”
Hexadecimal numbers 0000h Hexadecimal numbers are indicated by the suffix “h”
Symbols used
Type of information Example Marking
Cross-reference

Chapter
Internal cross-reference: A mouse click on the text
calls up the stated point in the document.
Supplementary
manual
External cross-reference
Hyperlink
http://www.nord.com/
References to external websites are indicated in
blue and underlined. A mouse click calls up the
website.
Type designations
Designation Description
SK 1x0E
Frequency inverter of SK 180E series
SK 2xxE
Frequency inverter of SK 200E series
SK 2x0E-FDS
Frequency inverter of SK 250E-FDS series
SK 3xxP Frequency inverter of SK 300P series
SK 5xxE
Frequency inverter of SK 500E series
SK 5xxP
Frequency inverter of SK 500P series
1.5 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 (e.g.
blind plugs for cable glands). Otherwise, there is a risk of serious injury or death from electric shock or
rupture of electrical components, e.g. high power capacitors.

1 General
BU 0800 en-4521 13
Unauthorised removal of covers, improper use, incorrect installation or operation causes a risk of
serious personal injury or material damage.
Depending on its protection class, the devices may have live, bare, moving or rotating parts or hot
surfaces during operation.
The device is operated with hazardous 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 master mains switch and is thus always live when connected to
mains voltage. Voltages may therefore be connected to a connected motor at standstill.
A connected motor may also rotate if the drive is disconnected from the mains and possibly generate
hazardous 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 device and any power plug connectors must not be disconnected while a voltage is applied to the
device. Failure to comply with this may cause arcing, which in addition to the risk of injury, also may
result in a risk of damage or destruction of the device.
The fact that the status LED or other indicators are not illuminated does not safely 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 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 low-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.
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.

NORDAC ON / ON+ (SK 3xxP) – Manual with installation instructions
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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. 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.

1 General
BU 0800 en-4521 15
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 all contacts of the power plug connections or the connection terminals 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 installations 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. This information must always be observed even with 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.
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.

NORDAC ON / ON+ (SK 3xxP) – Manual with installation instructions
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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).

1 General
BU 0800 en-4521 17
1.6 Warning and hazard information
Under certain circumstances, hazardous situations may occur in association with the frequency
inverter. In order to give explicit warning of possibly hazardous situations, clear warning and hazard
information can be found on the device and in the relevant documentation.
1.6.1 Warning and hazard information on the product
The following warning and hazard information is used on the product.
Symbol Supplement to
symbol 1) Meaning
DANGER
Device is live
> 5min after
removing mains
voltage
Danger
Electric shock
The device contains powerful capacitors. Because of this, there may be a
hazardous voltage for more than 5 minutes after disconnection from the mains.
Before starting work, check that the device is free of voltage at all power
contacts by means of suitable measuring equipment.
It is essential to read the manual in order to prevent hazards!
CAUTION
Hot surfaces
The heat sink and all other metal components as well as the surfaces of plug
connectors may heat up to temperatures in excess of 70°C.
• Danger of injury due to local burns on contact.
• Heat damage to adjacent objects
Allow sufficient cooling time before starting work on the device. Check the
surface temperatures with suitable measuring equipment. Maintain an
adequate distance to adjacent components or provide protection against
contact.
NOTICE
EDS
The device contains electrostatically sensitive components, which can be
easily damaged by incorrect handling.
Avoid all contact (indirect contact by tools or similar, or direct contact) with
PCBs and their components.
1) Texts are written in English.
Table 1: Warning and hazard information on the product
1.6.2 Warning information on the upper shell
Important information regarding danger of electric shock and hot surfaces can be found at the side of
the upper shell of the device.

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1.7 Standards and approvals
All devices across the entire series comply with the standards and directives listed below.
Approval Directive Applied
standards Certificates Label
CE
(European
Union)
Low Voltage 2014/35/EU
EN 61800-5-1
EN 60529
EN 61800-3
EN 63000
EN 61800-9-1
EN 61800-9-2
C310001_0921
EMC 2014/30/EU
RoHS 2011/65/EU
Delegated directive
(EU) 2015/863
Ecodesign 2009/125/EC
Regulation (EU)
Ecodesign 2019/1781
UL
(USA) UL 61800-5-1 E171342
CSA
(Canada) C22.2 No.274-13 E171342
RCM
(Australia) F2018L00028 EN 61800-3 ------
EAC
(Eurasia)
TR CU 004/2011,
TR CU 020/2011 IEC 61800-5-1 IEC 61800-3 EA-----
Table 2: Standards and approvals
1.7.1 UL and CSA approval
File No. E171342
The categorisation of protective equipment approved by the UL according to United States standards
for the devices described in this manual is listed below, basically with the original wording. The
categorisation of the individually relevant fuses or circuit breakers can be found in the “Electrical Data”
section of this manual.
All devices have a parameterisable motor overload protection (see P533, P535). UL recognised
(7.2.1).
Conditions UL/CSA according to report
Information
• “Integral solid state short circuit protection does not provide branch circuit protection. Branch circuit protection
must be provided in accordance with the Manufacturer Instructions, National Electrical Code and any
additional local codes”.
CSA: For Canada: “Integral solid state short circuit protection does not provide branch circuit protection.
Branch circuit protection must be provided in accordance with the Canadian Electrical Code, Part I”.
• “Use 60 °C Copper Conductors Only”, or “Use min. 60°C rated Copper Conductors Only”, or equivalent.
• “For use in Pollution Degree 2 and Overvoltage Category III environments only”, or equivalent.
• “Maximum Surrounding Air Temperature 40°C.”
• “The source shall be derived from a non-corner grounded type TN or IT AC source not exceeding 277 V
phase to earth”, or equivalent.

1 General
BU 0800 en-4521 19
Frame
Size
description
all
“Suitable For Use On A Circuit Capable Of Delivering Not More Than 5000 DC Symmetrical Amperes, 410 Volts
(-123 Devices) or 715 Volts (-340 Devices) Max., When Protected by R/C Semiconductor fuses, type______,
manufactured by _____”, as listed in 1)
all
“Suitable For Use On A Circuit Capable Of Delivering Not More Than ______ rms Symmetrical Amperes, 240 (1-
phase) or 480 (3-phase) Volts Max., When Protected by High-Interrupting Capacity, Current Limiting Class
____Fuses or faster, rated ______Amperes, and ____Volts”, as listed in 1)
all “Suitable for Use On A Circuit Capable Of Delivering Not More Than _______ rms Symmetrical Amperes, ____
Volt maximum” (240V for 1-phase models or 480V for 3-phase models),
“When Protected by Circuit Breaker (inverse time trip type) in accordance with UL 489, rated ______ Amperes,
and _______Volts”, as listed in 1)
1, 2
“Suitable for motor group installation on a circuit capable of delivering not more than 5000 rms symmetrical
amperes, 240 (1-phase) or 480 (3-phase) V max, when Protected by High-Interrupting Capacity, Current Limiting
Class RK5 Fuses or faster, rated max. 15 Amperes.
3
“Suitable for motor group installation on a circuit capable of delivering not more than 5000 rms symmetrical
amperes, 240 (1-phase) or 480 (3-phase) V max, when Protected by High-Interrupting Capacity, Current Limiting
Class RK5 Fuses or faster, rated max. 30 Amperes”.
1
“Suitable for motor group installation on a circuit capable of delivering not more than 20000 rms symmetrical
amperes, 240 (1-phase) or 480 (3-phase) V max, when Protected by High-Interrupting Capacity, Current Limiting
Class J Fuses or faster, rated max. 15 Amperes”.
1, 2
“Suitable for motor group installation on a circuit capable of delivering not more than 5000 rms symmetrical
amperes, 240 (1-phase) or 480 (3-phase) V max, when Protected by Circuit Breaker (inverse time trip type) in
accordance with UL 489, rated 15 Amperes and respectively 240 or 480 Volts min.”.
3
“Suitable for motor group installation on a circuit capable of delivering not more than 5000 rms symmetrical
amperes, 240 (1-phase) or 480 (3-phase) V max, when Protected by Circuit Breaker (inverse time trip type) in
accordance with UL 489, rated 30 Amperes and respectively 240 or 480 Volts min.”.
1 “Suitable for motor group installation on a circuit capable of delivering not more than 5000 rms symmetrical
amperes, DC 715 V max, when Protected by 50 215 26 from SIBA rated max. 20 Amperes”
1) 7.2.1 "Electrical data 3~400 V"

NORDAC ON / ON+ (SK 3xxP) – Manual with installation instructions
20 BU 0800 en-4521
1.8 Type code / nomenclature
1.8.1 Name plate
All of the information which is relevant for the device, including information for the identification of the
device, can be obtained from the name plate. The name plate is located on the front side of the upper
device shell.
Frequency inverter type code
SK 300P–360–340–A –C
IP protection class:
Standard = IP55, (-C) = IP66
Radio interference
suppression:
A= Class A1 (C2)
Mains voltage:
x40 = 400 V
Number of mains
phases:
3xx = 3-phase
Power:
360 = 0.37 kW, in Size 1
370 = 0.37 kW, in Size 2
450 = 0.45 kW, in Size 1
750 = 0.75 kW, in Size 2
950 = 0.95 kW, in Size 2
Frequency inverter
type:
300P = NORDAC ON without functional safety
301P = NORDAC ON with functional safety
310P = NORDAC ON+ without functional safety
311P = NORDAC ON+ with functional safety