NORD BU0300 User Manual
MANUAL
NORDAC trio SK300E
Frequency inverter
SK 300E-370-323-B ... SK 300E-111-323-B
(1~ 200 - 240V, 0.37 - 1.1kW)
SK 300E-370-323-B ... SK 300E-221-323-B
(3~ 200 - 240V, 0.37 - 2.2kW)
SK 300E-550-340-B ... SK 300E-401-340-B
(3~ 380 - 480V, 0.55 - 4.0kW)
DRIVESYSTEMSGmbH & Co. KG
BU 0300 EN
NORDAC trio SK 300E Manual Safety information
NORDAC trio SK 300E Frequency inverter
Safety and operating instructions for frequency inverters
(as per: Low voltage guideline 73/23/EEC )
1. General information
During operation, frequency inverters may have, depending
on their protection class, live, bare, moving or rotating parts or
hot surfaces.
Unauthorised removal of covers, improper use, incorrect
installation or operation leads to the risk of serious personal
injury or material damage.
Further information can be found in this documentation.
All transportation, installation and initialisation and
maintenance work must be carried out by qualified personnel
(compliant with IEC 364, CENELEC HD 384, DIN VDE 0100,
IEC 664 or DIN VDE 0110, and national accident prevention
regulations).
For the purposes of these basic safety instructions, qualified
personnel are persons who are familiar with the erection,
installation, commissioning and operation of this product and
who have the relevant qualifications for their work.
2. Intended use
Frequency inverters are components intended for installation
in electrical systems or machines.
When being installed in machines, the drive power converter
cannot be commissioned (i.e. implementation of the proper
use) until it has been ensured that the machine meets the
provisions of the EC directive 89/392/EEC (machine
directive); EN 60204 must also be complied with.
Commissioning (i.e. implementation of the proper use) is only
permitted when the EMC directive (89/336/EEC) is complied
with.
The frequency inverters meet the requirements of the low
voltage directive 73/23/EEC. The harmonised standards in
prEN 50178/DIN VDE 0160, together with EN 60439-1/VDE
0660 Part 500 and EN 60146/VDE 0558 were applied for the
frequency inverter.
Technical data and information for connection conditions can
be found on the rating plate and in the documentation, and
must be complied with.
3. Transport, storage
Information regarding transport, storage and correct handling
must be complied with.
Climatic conditions in line with prEN 50178 must be complied
with.
These safety instructions must be kept in a safe place!
4. Installation
The installation and cooling of the equipment must be
implemented as per the regulations in the corresponding
documentation.
The frequency inverters must be protected against
impermissible loads. In particular, no components must be
bent and/or the insulation distances changed during transport
and handling. Touching of electronic components and contacts
must be avoided.
Frequency inverters have electrostatically sensitive
components that can be easily damaged by incorrect handling.
Electrical components must not be mechanically damaged or
destroyed (this may cause a health hazard!).
5. Electrical connection
When working on frequency inverters which are connected to
high voltages, the applicable national accident prevention
regulations must be complied with (e.g. VBG 4).
The electrical installation must be implemented as per the
applicable regulations (e.g. cable cross-section, fuses, earth
lead connections). Further information is contained in the
documentation.
Information about EMC-compliant installation – such as
shielding, earthing, location of filters and installation of cables
– can be found in the frequency inverter documentation.
These instructions must also always be observed for drive
frequency inverters CE approval. Compliance with the limit
values specified in the EMC regulations is the responsibility of
the manufacturer of the system or machine.
6. Operation
Systems where frequency inverters are installed must be
equipped, where necessary, with additional monitoring and
protective equipment as per the applicable safety
requirements, e.g. legislation concerning technical equipment,
accident prevention regulations, etc. Modifications to the
frequency inverters using the operating software are
permitted.
After the frequency inverter is disconnected from the power
supply, live equipment components and power connections
should not be touched immediately because of possibly
charged capacitors. Comply with the applicable information
signs located on the frequency inverter.
All covers must be kept closed during operation.
7. Maintenance and repairs
The manufacturer documentation must be complied with.
2 BU 0300 EN
NORDAC trio SK 300E Manual Concerning this document
Documentation
Designation: BU 0300 EN
Part. No.: 607 30 01
Device series: NORDAC trio SK 300E
Version list
Designation of previous issues SW status Comments
BU 0300 DE, August 2005 V 1.6 R0 First issue
BU 0300 DE, December 2005 V 1.8 R0 3~230V implemented, plug-in design
BU 0300 DE, March 2006
Part. No. 607 3001 / 1306
BU 0300 DE, June 2007
Part. No. 607 3001 / 2307
BU 0300 DE, January 2008
Part. No. 607 3001 / 1208
V 1.8 R2
V 1.8 R2
V 1.9 R0
Wall mounting kit, technology units upgraded,
parameters supplemented, Harting connector, ATEX
Zone 22, Differentiation between IP55 and IP66 design
Technical data of relay function changed, 5V max.
275mA, analogue setpoint input resistance, new SK
PAR-2H / -2E version, UL data
Incorporation of 1~230V operation, new braking
resistors, UL data updated, P551 corrected
Published by
Getriebebau NORD GmbH & Co. KG
Rudolf- Diesel- Str. 1 • D-22941 Bargteheide • Germany • http://www.nord.com/
Telephone +49 (0) 45 32 / 401-0 • Fax +49 (0) 45 32 / 401-555
Intended use
of the frequency inverter
Compliance with the operating instructions is the requirement for error-free operation and
the fulfilment of any warranty claims. You must first read these operating instructions before
working with the device!
These operating instructions contain important information about service and safety. They
must therefore be kept close to the device.
The trio SK 300E frequency inverters are devices for industrial and commercial plants for
operating three-phase asynchronous motors with squirrel-cage rotors. These motors must be
suitable for operation with frequency inverters, other loads must not be connected to the
devices.
The trio SK 300E frequency inverters are devices for stationary installation on machines. All
details regarding technical data and permissible conditions at the installation site must be
complied with.
Commissioning (implementation of the intended use) is not permitted until it has been ensured
that the machine complies with the EMC directive 89/336/EEC and that the conformity of the
end product meets the machine directive 89/392/EEC (note EN 60204).
© Getriebebau NORD GmbH & Co. KG, 2007
BU 0300 EN 3
NORDAC trio SK 300E Manual
1 GENERAL INFORMATION ........................................................................................................... 6
1.1 Overview ................................................................................................................... 6
1.2 Delivery ..................................................................................................................... 6
1.3 Scope of Delivery...................................................................................................... 7
1.4 Safety and installation information ............................................................................ 8
1.5 Approvals .................................................................................................................. 9
1.5.1 UL/cUL certification .......................................................................................... 9
1.5.2 European EMC guideline ................................................................................. 9
1.6 Nomenclature / Type code ..................................................................................... 10
1.7 Design with protection class IP55 / IP66 ................................................................ 11
2 ASSEMBLY AND INSTALLATION ............................................................................................ 12
2.1 Motor-integrated and close to motor layouts .......................................................... 12
2.2 Wall mounting kit .................................................................................................... 13
2.3 Installation ............................................................................................................... 14
2.3.1 Adapter unit SK TI 0/1 .................................................................................... 14
2.3.2 Adapter unit SK TI 0/2 .................................................................................... 15
2.3.3 Motor connector variants ................................................................................ 16
2.3.4 Adapter plates for SK TI 0/2 ........................................................................... 17
2.3.5 Mounting the adapter unit ............................................................................... 18
2.3.6 Mounting the SK 300E frequency inverter ..................................................... 19
2.3.7 Retrofitting an SK 300E frequency inverter .................................................... 20
2.4 Painting ................................................................................................................... 20
2.5 Wiring guidelines .................................................................................................... 21
2.6 Electrical connection ............................................................................................... 22
2.6.1 Assignments for the adapter unit .................................................................... 22
2.6.2 Important information for single phase operation (1~230V) ........................... 24
2.6.3 Motor temperature protection ......................................................................... 24
2.6.4 Electromechanical motor brake ...................................................................... 24
2.7 Brake resistor .......................................................................................................... 25
2.7.1 BR dimensions ............................................................................................... 26
2.8 ATEX Zone 22 for SK 300E (400V devices only) ................................................... 27
2.8.1 Modified SK 300E for compliance with category 3D ...................................... 28
2.8.2 Options for ATEX Zone 22 ............................................................................. 28
2.8.3 Commissioning information ............................................................................ 30
2.8.4 EC declaration of conformity .......................................................................... 31
3 OPTIONS ..................................................................................................................................... 32
3.1 Modular options ...................................................................................................... 32
3.2 Technology unit overview ....................................................................................... 33
3.2.1 Mounting the technology unit ......................................................................... 35
3.2.2 ControlBox ...................................................................................................... 36
3.2.3 PotentiometerBox ........................................................................................... 41
3.2.4 DeviceNet module .......................................................................................... 41
3.2.5 Profibus module .............................................................................................. 42
3.2.6 CANopen Bus module .................................................................................... 42
3.2.7 InterBus module ............................................................................................. 43
3.2.8 AS interface .................................................................................................... 43
3.2.9 Retrofit kit, SK TU2 cover ............................................................................... 44
3.3 Customer unit overview .......................................................................................... 45
3.3.1 Customer unit Basic I/O ................................................................................. 46
3.3.2 Customer unit Standard I/O ............................................................................ 47
3.3.3 Mounting the customer unit ............................................................................ 48
4 BU 0300 EN
Table of contents
4 OPERATION AND DISPLAY ...................................................................................................... 51
4.1 Control element connection variants ...................................................................... 52
4.2 ParameterBox (Handheld variant) .......................................................................... 53
4.3 ParameterBox (Installation variant) ........................................................................ 54
4.4 Functions of the ParameterBox .............................................................................. 56
4.5 Parameters of the ParameterBox ........................................................................... 63
4.6 Error messages of the ParameterBox .................................................................... 66
4.7 Data transfer with NORD CON ............................................................................... 69
5 NORD CON SOFTWARE ........................................................................................................... 70
5.1 General information ................................................................................................ 70
6 COMMISSIONING ....................................................................................................................... 72
6.1 Basic settings ......................................................................................................... 72
6.2 Different motor ........................................................................................................ 73
6.3 Initial check with the ParameterBox ....................................................................... 73
6.4 Minimum configuration of control connections ....................................................... 74
7 PARAMETERISATION ............................................................................................................... 75
7.1 Supervisor mode .................................................................................................... 75
7.2 Electronic name plate ............................................................................................. 75
7.3 Array parameter display ......................................................................................... 75
7.4 Menu groups ........................................................................................................... 76
7.5 Operating displays .................................................................................................. 78
7.6 Basic parameters .................................................................................................... 79
7.7 Motor / characteristic curve parameters ................................................................. 82
7.8 Control terminals .................................................................................................... 86
7.9 Additional parameters .......................................................................................... 102
7.10 Information .......................................................................................................... 111
7.11 Parameter overview, User settings .................................................................... 115
8 FAULT MESSAGES ................................................................................................................. 119
8.1 ControlBox display ................................................................................................ 119
8.2 Table of possible error messages ........................................................................ 119
9 TECHNICAL DATA .............................................................................................................. ..... 124
9.1 General Data ........................................................................................................ 124
9.2 Electrical data 230V.............................................................................................. 126
9.3 Electrical data 400V.............................................................................................. 127
9.4 Electrical data for UL/cUL certification ................................................................. 128
9.5 Electromagnetic compatibility (EMC) ................................................................... 129
9.6 EMC limit value classes ....................................................................................... 130
10 MOTOR DATA ........................................................................................................................ 131
10.1 Motor data rated point 50Hz ............................................................................... 131
10.2 Motor data rated point 87Hz (400V devices only) .............................................. 133
10.3 Motor data rated point 100Hz (400V devices only) ............................................ 134
11 DIMENSIONS .......................................................................................................................... 135
11.1 230V devices ...................................................................................................... 135
11.2 400V devices ...................................................................................................... 135
12 ADDITIONAL INFORMATION ................................................................................................ 136
12.1 Setpoint processing in the SK 300E ................................................................... 136
12.2 PID controller in the SK 300E ............................................................................. 138
12.3 Process controller ............................................................................................... 140
12.4 Maintenance and servicing information .............................................................. 143
13 KEYWORD INDEX .................................................................................................................. 144
14 REPRESENTATIVES / BRANCHES ...................................................................................... 146
BU 0300 EN 5
NORDAC trio SK 300E Manual
1 General information
The construction series NORDAC trio SK 300E is a combination of geared motor and fully functional
frequency inverter, with which process-based solutions can be implemented for decentral system concepts.
The microprocessor-controlled frequency inverters are used to control the speed of three-phase asynchronous
motors.
These devices are provided with sensorless vector current control system which constantly ensures an
optimised voltage-to-frequency ratio based on the simulated operation of a single
motor. This has the following significance for the drive: Peak start-up and overload torques at constant speed.
Due to the modular technology units and customer units, this device series can be customised to meet
individual requirements of customers.
Due to the numerous setting options, all three-phase motors can be operated. The output ranges from 0.55 to
4.0kW (3~ 380V...480V), 0.37 to 2.2kW (3~ 200V…240V) and 0.37 to 1.1kW (1~ 200V…240V) with
integrated line filter. The overload capacity is 150% for 30 seconds and 3 seconds for 200% peak loads.
The manual is based on the device software V1.9 R0 (P707) of the NORDAC trio SK 300E. If the frequency
inverter used has a different version, this may lead to some differences. If necessary, you can download the
current manual from the Internet (http://www.nord.com).
three-phase asynchronous
1.1 Overview
Properties of the basic device:
• High starting torque and precise motor speed control setting with sensorless current vector control
• Integrated EMC line filter for limit curve B1 as per EN55011
• Automatic measurement of stator resistance possible
• Integrated brake chopper for 4 quadrant drive
• Integrated controller for electromechanical motor brake
• 1 x digital input, 1 x relay message
• Additional customer unit modules with further inputs
• RS485 interface on M12 plug and on terminal
• Two separate parameter sets which are switchable online
The characteristics of the basic device with an additional technology unit or customer unit are described in
Chapter 3, 'Options'.
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 implement a thorough assessment.
Important! This also applies even if the packaging is undamaged.
6 Subject to technical alterations BU 0300 EN
1 General information
1.3 Scope of Delivery
Standard version:
• Frequency inverter, including adapter unit, attached to the motor (or geared motor) or the frequency
inverter without adapter unit
• Protection class IP55 / IP66 (state when ordering)
• Blanking cover for technology unit slot (Chap. 3.2.9 )
• Integrated line filter for limit curve B1 as per EN55011 for frequency inverter installed on motor, A1
when mounted close to motor (Chap. 9.6 )
• Integrated brake chopper
• CD-ROM containing the manuals
NOTE:
:
Additional fieldbus manuals are available – BU 0020 … BU 0090.
HTUwww.nord.comUTH <<<
>>>
Available accessories
• Wall mounting kit (Chap. 2.2 )
• Braking resistor, for energy feedback (Chap. 2.7 )
• Interface converter RS232 → RS485 (additional description BU 0010)
• Various connector cables (Chap. 4.1 )
• NORD CON, PC parameterisation software (Chap. 5)
• ParameterBox, external operating panel with LCD clear text display, handheld variant SK PAR-2H or
for control cabinet installation SK PAR-2E (Chap. 4; additional description BU 0040)
Technology unit, Chap. 3.2 :
SK TU2-CTR ControlBox
Detachable control panel, 4-figure 7-segment LED display, keyboard
SK TU2-POT PotentiometerBox
Additional module with switch (R/L) and infinitely variable potentiometer
SK TU2-PBR Profibus, additional module for Profibus communication (1.5 MBaud)
SK TU2-PBR-24V Profibus with external 24V supply (12 Mbaud)
SK TU2-PBR-KL Profibus, screwed connection terminal with cover
SK TU2-CAO CANopen, fieldbus interface
SK TU2-DEV DeviceNet, fieldbus interface
SK TU2-IBS InterBus, fieldbus interface
SK TU2-AS1 AS interface
Customer unit, Chap. 3.3 :
SK CU2-BSC Basic I/O, medium number of control signals
SK CU2-STD Standard I/O, high number of control signals
Note
Both a separate frequency inverter SK 300E (adapter unit must be ordered separately!) and an
adapter unit for adaptation to the existing motor can be supplied as spare parts.
BU 0300 EN Subject to technical alterations 7
NORDAC trio SK 300E Manual
1.4 Safety and installation information
NORDAC trio SK 300E frequency inverters are equipment for use in industrial high voltage systems and are
operated at voltages that could lead to severe injuries or death if they are touched.
• Installation and work may only be carried out by qualified specialist electricians and with the
. The manual must always be available for these
after being switched off. The
before the mains voltage is
CAUTION
electrical supply to the equipment disconnected
persons and must be complied with.
• Local regulations for installation of electrical systems and accident prevention regulations must be
complied with.
• The device may carry a dangerous voltage for up to 5 minutes
equipment may only be opened or the cover removed 5 minutes after the equipment has been
disconnected from the power supply. All covers must be replaced
switched back on again.
• Even during motor standstill (e.g. caused by a release block, blocked drive or output terminal short
circuit), the line connection terminals, motor terminals and braking resistor terminals may still
conduct hazardous voltages
. A motor standstill is not synonymous with electrical separation from
the mains.
• Warning, under certain settings the frequency inverter can start automatically after the mains are
switched on.
• The frequency inverter is only intended for permanent connection and may not be operated without
effective earthing connections that comply with local regulations for large leak currents (> 3.5mA).
VDE 0160 requires the installation of a second earthing conductor or an earthing conductor crosssection of at least 10mm
2
.
• Normal FI-circuit breakers are not suitable as the sole protection in three-phase frequency
inverters when local regulations do not permit a possible DC proportion in the fault current.
The FI circuit breaker must be an all-mains sensitive FI circuit breaker (type B) as per EN 50178 /
VDE 0160.
The heat sink and all other metal components can heat up to temperatures above 70°C.
ATTENTION
DANGER TO LIFE
When mounting, sufficient distance from neighbouring components must be maintained.
When working on the components, allow sufficient cooling time beforehand
The power unit can continue to carry voltages for up to 5 minutes after being switched
off at the mains. Inverter terminals, motor cables and motor terminals may still be live!
Touching open or free terminals, cables and equipment components can lead to
severe injury or death!
Work may only be carried out by qualified specialist electricians and with the electrical
supply to the equipment disconnected!
!
8 Subject to technical alterations BU 0300 EN
CAUTION
• Only qualified specialist personnel are allowed entry and access to the device!
• The equipment may only be used for the purpose intended by the manufacturer. Unpermitted
modifications and the use of spare parts and additional equipment that has not be bought from or
recommended by the equipment manufacturer can lead to fire, electric shock and injury.
Keep these operating instructions in an accessible location and ensure that every operator uses it!
•
1.5 Approvals
1.5.1 UL/cUL certification
„Suitable for use on a circuit capable of delivering not more
than 5000rms symmetrical Amperes, 200…240Volts /
380…480Volts maximum, when protected by class J fuses,
600 Volts rated as described in Chapter 9.4”
Use 60/75° copper conductors only.
The UL/cUL certification only applies for a maximum ambient
temperature of 40°C.
Wiring terminals shall be marked to indicate the proper
connections and tightening torque:
Terminal Tightening torque Cable cross-section
Main supply (Molex 72 / Weko 983) 1,1 Nm / 10 Ib-in 2,5 mmP
Control terminals / MFR (Phönix MKDSN 1,5) 0,6 Nm / 5,3 lb-in 1,5 mmP
Motor / Brake (Phönix GMKDS 3) 0,6 Nm / 5,3 lb-in 1,5 mmP
1.5.2 European EMC guideline
1 General information
UL File: E171342
2
P
/ 20-12 AWG
2
P
/ 30-14AWG
2
P
/ 30-12AWG
If the NORDAC trio SK 300E is installed according to the recommendations of
these operating instructions, it meets all EMC directive requirements, in
accordance with the EMC product standard for motor-operated systems EN
61800-3.
BU 0300 EN Subject to technical alterations 9
NORDAC trio SK 300E Manual
r
1.6 Nomenclature / Type code
The NORDAC trio SK 300E frequency inverter has the same nomenclature as other NORDAC frequency
inverters. The information contained therein can be determined in the same way. The type classification of the
frequency inverter contains the device type, the nominal output, data on mains voltage, the noise suppression
filter, protection class and any special device designs. The nomenclature of the adapter unit, which represents
the link between the motor and frequency inverter, can be found in the designation of the geared motor. This
clearly identifies a drive unit with SK 300E. The nomenclature contains the abbreviation of the adapter unit,
version and variant of the components, the protection class and the motor winding circuits.
NOTE
The nomenclature must always be provided in orders and for service and support cases!
Adapter unit Frequency inverte
TI 0 / 1 C - S - SK 300E - 55 0 - 3 40 - B
-C -ABC
Special device design
(3 letters)
IP protection class of frequency inverter:
space = IP55 design (Standard)
C (coated) = IP66 design (Option)
Integrated noise suppression filter:
B = Class B1
Mains voltage:
x23 = 230V
x40 = 400V
Number of mains phases:
3 = 3 phase
Digits before comma for power:
0 = 0.xx,
1 = 0x.x0
Device nominal power (xx):
37 = 0.37kW …
40 = 4.00kW
Device series:
SK 300E
Star / Delta circuit
IP protection class of adapter unit:
space = IP55 design (Standard)
C (coated) = IP66 design (Option)
Variant 1 / 2 (...of adapter unit)
1 = with screwed cable glands
2 = Harting connector attachment
Version 0
Trio Interface (trio- adapter unit)
10 Subject to technical alterations BU 0300 EN
1 General information
1.7 Design with protection class IP55 / IP66
The frequency inverter NORDAC trio SK 300E can be ordered in any size and therefore any power stage with
the protection classes IP55 (Standard) or IP66 (Option).
The protection class IP66 must
There are no restrictions in both protection classes regarding the function of the available adapter units,
technology units or customer units (see the applicable chapters). The type designation of the SK 300E and the
modules in the protection class IP66 is given an additional code "-C" (coated → coated board) to differentiate
the IP55 and IP66 protection classes.
IP55 design
:
The IP55 design of the SK 300E is generally available as the standard design. Both variants (motor-
integrated, close to motor) are available here. In addition, all adapter units, technology units and customer
units are available for this design.
IP66 design
:
The IP66 design is a modified option compared to the IP55 design. Both variants (motor-integrated, close to
motor) are also available here. The modules available to the IP66 design (adapter units, technology units and
customer units) have the same functionalities as the corresponding IP55 design modules.
Note
The modules for the IP66 design are identified by an additional "-C" and are modified according to the
following special measures!
Special measures:
• Coated circuit boards
• Low pressure tests
Æ A free M12 screwed connection is required for low pressure testing. Following successful
testing, a membrane valve is inserted here. These screw connections are therefore not
available to the customer.
• Membrane valve for pressure compensation during temperature changes
Note
It must
be ensured in the IP66 design that the cable lines and cable connections are carefully
matched so that no leaks occur in the SK 300E or any other problems occur that could affect the
maintenance of the IP66 protection class!
always be included in the order when ordering!
BU 0300 EN Subject to technical alterations 11
NORDAC trio SK 300E Manual
2 Assembly and installation
2.1 Motor-integrated and close to motor layouts
Motor-integrated layout:
In the motor-integrated version, the SK 300E frequency inverter is mounted directly on the motor with an
adapter unit (SK TI 0/1 or 0/2) and is therefore integrated in the drive. This version is the standard version.
Optional technology unit
and customer unit
Close to motor design:
The close to motor SK 300E design means that the frequency inverter can be mounted close to the motor, i.e.
on a wall or a machine scaffold for example. A wall-mounting kit is required for this (see Chap. 2.2).
Optional technology unit
and customer unit
12 Subject to technical alterations BU 0300 EN
2.2 Wall mounting kit
(SK WMK-DA1, Part. No. 275115100)
The geared motor and inverter can be installed
separately, using the wall mounting kit, so that
the SK 300E can be used close to the motor.
With this option the frequency inverter can be
mounted directly on a wall or machine scaffold
with a very high protection class of IP55 / IP66.
2 Assembly and installation
Installation
The wall mounting kit must be fitted using the
hole pattern below.
160 mm
125 mm
128 mm
157,5 mm
Commissioning
The wall-mounting kit (SK WMK-DA1) is a
modular design system, i.e. an adapter unit
must be selected first (SK TI 0/1 or SK TI 0/2)
so that the SK 300E frequency inverter can be
fitted to the wall-mounting kit.
When delivered, the wall-mounting kit with the
SK 300E is ready for connection to mains,
motor and control cables. The frequency
inverter only needs to be pushed on after the
cables are connected.
Different datasets from the frequency inverter
and "electronic name plate" will be displayed in
the operating display (E8.6) and by the red
LED during initial commissioning only. This
display serves to inform the operator; the
message is acknowledged by an Enable signal
and the datasets are then synchronised. After
the factory settings are loaded (P523) and the
motor data are set, the frequency inverter is
ready to be switched on.
43 mm
Fastening holes in detail:
12 mm
5,5 mm
Module contents
Note
Data for power derating in the close to motor version at high ambient temperatures can be found in
Chap. 9.1 General Data.
BU 0300 EN Subject to technical alterations 13
NORDAC trio SK 300E Manual
2.3 Installation
An adapter unit with the correct connection terminals and appropriate plug-in connections for the frequency
inverter is always required for the SK 300E. There are two types of adapter unit, the SK TI 0/1 (-C) and SK TI
0/2 (-C), and their different properties are described in the following chapters.
The adapter units are both suitable for the inverter sizes 1 and 2.
2.3.1 Adapter unit SK TI 0/1
(SK TI 0/1, Part. No. 275115010)
(SK TI 0/1-C, Part. No. 275175010)
The adapter units SK TI 0/1 and SK TI 0/1-C are cast enclosures which are fitted with different sizes of cable
glands on both sides. They are fully fitted with blind plugs.
The following are available:
3 screw connections M12 (e.g. brake cable), 2 connections in the SK TI 0/1-C
4 screw connections M20 (e.g. supply voltage)
1 screw connection M16 (for connection socket M12 of the ParameterBox SK PAR-2H)
Components of the adapter unit TI 0/1
:
Cast enclosure CIU - customer interface unit
Cable for motor
U-V-W connection
Cable for motor PTC Screw accessories
M12 socket
ATTENTION
The adapter unit SK TI 0/1 is available for the protection class IP55 and the adapter unit SK TI
0/1-C for IP66. Otherwise, the functionality and dimensions of both adapter units are identical.
However
protection class.
special measures (see Chap. 1.7) are implemented in the IP66 version to maintain this
14 Subject to technical alterations BU 0300 EN
2 Assembly and installation
2.3.2 Adapter unit SK TI 0/2
(SK TI 0/2, Part. No. 275115020)
(SK TI 0/2-C, Part. No. 275175020)
The adapter units SK TI 0/2 and SK TI 0/2-C have 2 mounting flanges on the sides to which various adapter
plates with different types of cable glands or motor connectors can be mounted. The standard design always
has 2 x M12 screw connections and an adapter plate with the following screw connections on the one side:
2 screw connections M20 (e.g. supply voltage)
1 screw connection M16 (for connection socket M12 of the ParameterBox SK PAR-2H)
The adapter plate with the screw connections is located at III in the standard design.
Cast enclosure CIU - customer interface unit
Cable for motor
U-V-W connection
Cable for motor PTC
ATTENTION
The adapter unit SK TI 0/2 is available for the protection class IP55 and the adapter unit SK TI
0/2-C for IP66. Otherwise, the functionality and dimensions of both adapter units are identical.
However
protection class.
special measures (see Chap. 1.7) are implemented in the IP66 version to maintain this
M12 socket
Screw accessories
BU 0300 EN Subject to technical alterations 15
NORDAC trio SK 300E Manual
2.3.3 Motor connector variants
Harting HAN 10E Harting HAN Q8
Motor-mounted (motor-integrated)
EITHER:
Power input (LE)
Æ Mains voltage
Wall mounting
EITHER:
Power input (LE)
Æ Mains voltage
Motor connector Nomenclature Function Part. No.
HAN 10E
HAN Q8
H10E LE Power input 275135000
H10E MA Motor output 275135020
HQ8 LE Power input 275135030
HQ8 MA Motor output 275135050
OR:
Motor output (MA)
Æ Motor line
or motor connector (MA)
Æ Motor connection
16 Subject to technical alterations BU 0300 EN
2 Assembly and installation
2.3.4 Adapter plates for SK TI 0/2
The other side of the cast enclosure is available without adapter plate in the standard version. This allows
various adapter plates with different types of cable glands or system connectors to be mounted (e.g. Harting
connector). In addition, it is possible to mount the components listed in the table below to the respective
mounting flanges, replacing the standard adapter plate:
Important! Generally, only the mounting of one
Optional adapter plates:
system connector is possible!
SK DA 4x M16,
Part No. 075119000
SK DA 2x M20, 1x M16,
Part No. 075119010
Adapter plates
SK DA 1x M25, 2x M16,
Part No. 075119020
SK DA Blindplatte,
Part No. 075119040
Type Part. No.
SK DA 4x M16 275119000
SK DA 2xM20, 1xM16 275119010
SK DA 1xM25, 2xM16 275119020
SK DA Blind plate 275119040
BU 0300 EN Subject to technical alterations 17
NORDAC trio SK 300E Manual
2.3.5 Mounting the adapter unit
The SK 300E frequency inverter and the (SK TI 0/1 (-C) or SK TI 0/2 (-C)) adapter unit are always completely
mounted and tested when a trio drive (gears + motor + frequency inverter) is delivered. The adapter unit can
also be ordered separately for subsequent mounting on an existing motor or to replace an older motor-
mounted trio frequency inverter.
Note
However, the IP66-conform SK 300E must be mounted at NORD as special measures have to be
implemented. IP66 components retrofitted on site cannot ensure that this protection class is
guaranteed.
The module "Adapter unit" (SK TI 0/1 (-C) or SK TI 0/2 (-C)) contains the following components:
• Cast enclosure (dependent on type of adapter unit)
• customer interface unit (circuit board)
• M12 socket with system connector for RS485 interface
• Screw accessories for attaching the customer interface unit
• Pre-fabricated cable for motor and PTC connections
Procedures:
1. Screw the M12 socket into the connection unit in the cast enclosure, ensuring that it is tight.
2. Mount the cast enclosure on the terminal box stub of the NORD motor with the existing screws in place of
the terminal box. Position the cast enclosure with the dome facing the motor A-side. Retain the motor's
terminal block. Check the adaptability for different motor manufacturers.
3. After the bridges for the correct motor circuit are set, connect the pre-fabricated cables for motor
connection and PTC connection to the respective connection points on the motor.
4. After the cables for the motor connection and PTC are connected to the appropriate terminals on the
customer interface unit (pin assignment, see Chap. 2.6.1 ), the customer interface must be mounted with
the screw accessories in the cast enclosure. It must be ensured that the insulation foil lies on the inner side
of the cast enclosure dome. Both tabs must be pointing to the inside of the cast enclosure.
5. Connect the M12 socket system connector to the appropriate slot (see Fig. 2)
Insolation
foil
Fig. 1: Complete adapter unit Fig. 2: M12 socket connection
18 Subject to technical alterations BU 0300 EN
2 Assembly and installation
2.3.6 Mounting the SK 300E frequency inverter
The frequency inverter must first be removed before it can be electrically connected. To do this, undo the 4
fastening screws (Fig. 1) so that the frequency inverter can be lifted off vertically (Fig. 2). After connecting the
supply voltage, the frequency inverter must be vertically reattached (Fig. 3), beginning with the plugs on the
rating plate side which ensure that the inverter is positioned correctly. Further information about attaching
customer units can be found in Chap. 3.3.3 “Mounting the customer unit”
In order to achieve the maximum protection class IP55 / IP66, it must be ensured that all fastening screws of
the frequency inverter are tightened in the specified sequence from screw 1 to screw 4 and with the torque
specified in the table below. Use appropriate screwed connections for the connection line cable cross-section.
Dissipation of heat generated by the inverter occurs via convection . The driven motor must have normal
ventilation. Heat dissipation must not be hindered by significant contamination.
A cover plate with 2 LEDs is normally located on the top side of the frequency inverter. These LEDs show the
status of the frequency inverter. Note that the green LED constantly lights when the mains voltage is applied,
and the red LED according to the error message, e.g. 5 flashes - pause - 5 flashes, etc. for the error E005.
Screw 2 Screw 1
Screw 4 Screw 3
Fig.1: Fastening screws Fig.2: Removing the SK 300E
Frequency inverter size Screw size Tightening torque
S 1 M5 x 35 3.5Nm ± 20%
S 2 M5 x 50 3.5Nm ± 20%
Fig.3: Attaching the SK 300E
Cinch connector
BU 0300 EN Subject to technical alterations 19
NORDAC trio SK 300E Manual
2.3.7 Retrofitting an SK 300E frequency inverter
The SK 300E frequency inverter can only be mounted on existing motors when the dimensions of the terminal
box stub matches the dimensions of the adapter unit SK TI 0/1 (-C) or SK TI 0/2 (-C). In order to guarantee the
maximum protection class IP55 / IP66 of the frequency inverter for the entire trio unit, the protection class of
the motor must be modified accordingly.
The adapter unit can be directly attached to size 80 - 100 NORD motors, an additional adapter plate/spacer
with additional seal/cable is required for the sizes 63 - 71 and 112.
NORD motor sizes SK 300E attachment Part. No.
SK 63- 71
SK 80 - 100 Direct attachment of adapter unit
SK 112
Attachment with adapter plate 63 – 71 011015410
(+ additional frame seal) 013097000
Attachment with spacer S 112 013035450
(+ additional terminal box - frame seal) 013097000
Cable kit SK 300E for motor S 112 075115090
075115120
Kit
Adapter unit
Adapter plate (P.No. 011015410)
Seal (P.No. 13097000)
Motor size 63 - 71
Important! The adaptability for other types of motor must be checked individually!
If a trio SK 300E is fitted on site without assistance on an existing motor, the notes regarding Adapter unit
assignment in Chap. 2.6.1 must be complied with.
2.4 Painting
The SK 300E frequency inverter and the corresponding adapter unit are covered in a black powder coating.
These components may not be painted over!!! The geared motor is painted separately.
20 Subject to technical alterations BU 0300 EN
2 Assembly and installation
2.5 Wiring guidelines
The frequency inverter has been developed for use in an industrial environment. In this environment, high
levels of electromagnetic interference can influence the frequency inverter. In general, correct installation
ensures safe and problem-free operation. Should limit values in excess of the EMC guidelines be required,
then the following guidelines may be useful.
(1) Ensure that all devices are securely earthed using short earthing cables that have large cross-sections
and which are connected to a common earthing point or earthing rail. It is especially important that
every control device connected to the frequency inverters (e.g. an automation device) is connected,
using a short cable with large cross-section, to the same earthing point as the inverter itself. Flat
conductors (e.g. metal clamps are preferable, as they have a lower impedance at high frequencies.
(2) The PE cable for the motor controlled via the frequency inverter should be connected directly to the
earthing connection linked to the enclosure together with the PE for the relevant frequency inverter
feeder. The presence of a central earthing bar in the control cabinet and the grouping together of all PE
conductors to this bar normally ensures safe operation.
(3) Where possible, shielded cables should be used for control loops. Carefully terminate cable ends and
ensure that the wires do not run over longer sections unshielded.
(4) The shields of analogue setpoint cables should only be earthed on one side on the frequency inverter.
(5) The control cables should be installed as far as possible from power cables, using separate cable ducts
etc. Where cables cross, an angle of 90° should be ensured as far as possible.
(6) Ensure that the contactors in the cabinet are interference protected, either by RC circuits in the case of
DC contactors or by free-wheeling diodes for AC contactors, whereby the interference traps must be
positioned on the contactor coils. Varistors for over-voltage limitation are also effective. This
interference suppression is particularly important when the contactors are controlled by the relay in the
frequency inverter.
(7) Use shielded or armoured cable for the load connections and earth the shielding/armour at both ends (if
the motor is not integrated). If possible, directly at the inverter PE.
(8) A noise suppression filter is always present in the standard device. If the frequency inverter is mounted
directly on the motor, then noise suppression grade Class B1 is achieved. If the frequency inverter is
mounted close to the motor (e.g. wall mounted), noise suppression grade Class A1 is achieved with a
motor cable length of up to 15m (shielded cable).
(9) Select the lowest possible pulse frequency. This reduces the intensity of the electromagnetic
interference generated by the frequency inverter.
The safety regulations must be complied with under all circumstances when
installing the frequency inverter!
NOTE
The control cables, line cables and motor cables must be laid separately. In no case should they be
laid in the same protective pipes/installation ducts.
The test equipment for high voltage insulations must not be used on cables that are connected to the
frequency inverter.
BU 0300 EN Subject to technical alterations 21
NORDAC trio SK 300E Manual
2.6 Electrical connection
WARNING
THESE DEVICES MUST BE EARTHED.
Safe operation of the devices presupposes that qualified personnel mount and operate it in
compliance with the instructions provided in these operating instructions.
In particular, the general and regional mounting and safety regulations for work on high voltage
systems (e.g. VDE) must be complied with as must the regulations concerning professional use of
tools and the use of personal protection equipment.
Dangerous voltages can be present at the line input and the motor connection terminals even
when the inverter is switched off. Always use insulated screwdrivers on these terminal fields.
Ensure that the input voltage source is not live before setting up or changing connections to the
unit.
Ensure that the motor is designed for the correct connection curren t .
2.6.1 Assignments for the adapter unit
Maximum capacity
Connection terminal data Type Tightening torque Cable cross-section
Mains connection Molex 72 / Weko 983 1.1 Nm / 10 Ib-in 2.5 mm2 / 20-12 AWG
Controller connections MFR: Phönix MKDSN 1.5 0.6 Nm / 5.3 Ib-in 1.5 mm2 / 30-14 AWG
Motor connection
Mechanical brake
Brake resistor
Cable connections M12 - M16 - M20 - M25 2.5 - 6 - 8.5 - 10Nm
Supply voltage + 5V max. 275 mA
Supply voltage + 15V max. 100 mA
Signal relay max. 24V / 500 mA
Phönix GMKDS 3 0.6 Nm / 5.3 Ib-in 1.5 mm
2
/ 30-12 AWG
22 Subject to technical alterations BU 0300 EN
PE- socket = 3~ 400V device
PE- connector = 3~ 230V device
Option
Customer unit
Earth "PE"
2 Assembly and installation
(connection of mains line)
Control connections:
[21] Dig. Input 1
[41] + 5V supply voltage
[40] 0V, GND
[41] + 5V supply voltage
[40] 0V, GND
[42] + 15V supply voltage
[74] RS 485 interface: B (-)
[73] RS 485 interface: A (+)
Termination resistor RS 485 On/Off
[02] Signal relay (error)
[01] Signal relay
(PTC input) (*)
[…] = Terminal No.
L1 L2 L3
PE L1 L2 L3
1
( PE L N - )
2
( PE - N L )
Mains voltage:
3~ 400V / 3~ 230V
1
) 1~ 230V, 0,37-0,75kW
2
) 1~ 230V, 1,1kW
Mains fuse:
See Chap. 8 "Technical data"
-Br +BrU V W
Motor
3~
Mechanical brake
See Chap. 2.6.4
"Electromechanical brake"
-B +B
System connector M12 socket
Earth "PE"
(Additional PE terminal, e.g. for
control line, braking resistor)
External brake resistor
The polarity can be ignored.
(*) The digital inputs can be connected
with the internal 15 V or from the PLC
(7.5 – 33V DC). The data in "(...)"
represent the factory settings.
BU 0300 EN Subject to technical alterations 23
NORDAC trio SK 300E Manual
2.6.2 Important information for single phase operation (1~230V)
1. Mains supply is implemented via terminals L1 (L) and L2 (N) for 0.37-0.75kW SK 300E, or L3 (L) and L2
(N) for 1.1kW SK 300E.
This is important for the correct function of the brake rectifier, amongst others.
2. Higher input currents occur with single phase operation. (Chap. 9.2)
3. The mains voltage monitoring must be switched off (Parameter P538 = 0).
2.6.3 Motor temperature protection
The only reliable motor over-temperature protection is a
temperature sensor installed inside the motor winding
(PTC resistor, PTC) This can be connected to a digital
+5V supply voltage
Terminal: “VO +5V”
input and evaluated. A Klixon (bimetal switch) is also
possible.
[41]
Normally, the motor of a trio SK 300E is equipped with a
PTC resistor. In the basic frequency inverter configuration
ig. input
[21]
(without customer unit), 1 digital input is available. This
should normally be used as the PTC input and is set up
as the factory setting.
Switching on can take place directly with the supply voltage (P428 "Automatic start up" 2 = immediate with
mains), via a bus connection, with the ParameterBox, the potentiometer option or with the NORD CON
operating software. If additional control signals are required, then the device must be upgraded with a
customer unit (Basic I/O - SK CU2-BSC, Standard I/O - SK CU2-STD).
If a different digital input is used for the PTC when a customer unit is added, then the relevant parameter
P420...P424 of the digital input must be set to the set value 13.
2.6.4 Electromechanical motor brake
Motor
PTC
An output voltage is generated by the frequency inverter at the terminals -Br/+Br to actuate an
electromechanical motor brake (see Chap. 2.6.1 Assignments for the adapter unit). This is dependent on the
supply voltage present in the frequency inverter. The allocation is as follows:
Mains voltage / AC voltage Brake coil voltage (DC)
400V ~ 180V =
460V ~ - 480V ~ 205V =
230V ~ 105V =
The allocation of the correct brake or brake coil voltage must be taken into account in the design with
reference to the frequency inverter mains voltage.
24 Subject to technical alterations BU 0300 EN
2.7 Brake resistor
2 Assembly and installation
During dynamic braking (frequency reduction) of a three-phase
motor, electrical energy is returned to the inverter. In order to
avoid overcurrent switch-off of the frequency inverter, the
integrated brake chopper can convert the returned energy into
heat by connecting an external braking resistor.
2 screw connections, which should be fitted with the appropriate
seals, are enclosed for mounting the braking resistor on the
frequency inverter (M20 for the cable and M12 for the holder).
Suitable installation material is provided to mount the brake
resistor on the adapter unit TI 0/2.
CAUTION
The braking resistance and all other metal components can heat up to temperatures above 70°C.
When mounting, sufficient distance from neighbouring components must be maintained. When working
on the components, allow sufficient cooling time beforehand
Contents of the module (TI 0/1)
Frequency inverter
type
SK 300E-550-340-B …
SK 300E-151-340-B
SK 300E-221-340-B …
SK 300E-401-340-B
SK 300E-550-340-B …
SK 300E-151-340-B
SK 300E-221-340-B …
SK 300E-401-340-B
Braking resistor
Resistor type
SK BR3-120/100-TI 0/1
Part. No. 275140010
SK BR3-82/200-TI 0/1
Part. No. 275140020
SK BR3-120/100-TI 0/2
Part. No. 275140030
SK BR3-82/200-TI 0/2
Part. No. 275140040
Screw connections,
for fastening the
braking resistor
Resis-
tance
120
82
120
82
*) permitted, depending on application, max. 5% ED / 120s (700VDC)
Ω
Ω
Ω
Ω
Continuous
rating
100 W 1.0 kW
200 W 2.0 kW
100 W 1.0 kW
200 W 2.0 kW
*) Pulse
output
(approx.)
Connection
leads,
400mm
FEP AWG
14/19 wh,gy;
PTFE AWG
12/19 gn
Protection
type
IP67
BU 0300 EN Subject to technical alterations 25
NORDAC trio SK 300E Manual
2.7.1 BR dimensions
Frequency inverter
type
SK 300E-550-340-B …
SK 300E-151-340-B
SK 300E-221-340-B …
SK 300E-401-340-B
SK 300E-550-340-B …
SK 300E-151-340-B
SK 300E-221-340-B …
SK 300E-401-340-B
Resistor type L W D Hole spacing
SK BR3-120/100-TI 0/1 150 160 65 75
SK BR3-82/200-TI 0/1 255 160 65 75
SK BR3-120/100-TI 0/2 150 160 75 82
SK BR3-82/200-TI 0/2 255 160 75 82
Dimensions (here for frequency inverter size 1 and TI 0/1):
All dimensions in [mm]
65 mm
51 mm
150 mm
140 mm
Wire colour Connector terminal
Brown +B
White -B
Green/Yellow PE
Electrical connection:
→ See also Chap. 2.6.1 "Assignments for the adapter unit"
26 Subject to technical alterations BU 0300 EN
2 Assembly and installation
2.8 ATEX Zone 22 for SK 300E (400V devices only)
General information
The NORDAC trio SK 300E can be used in hazardous areas with a suitable modification. It is important that all
safety information given in the operating instructions are strictly complied with for person and property reasons.
This is essential to avoid hazards and damage.
Qualified personnel
It is assumed that all work regarding transport, mounting, installation, commissioning and maintenance is
carried out by qualified personnel. Qualified personnel are those persons who, based on their education,
experience, training and knowledge of applicable standards, specifications, accident prevention regulations
and operating conditions, are authorised to implement the relevant activities required to commission the
frequency inverter. In addition, knowledge of first aid measures and the local rescue facilities is necessary.
ATTENTION
All work must be carried out only when the system is in an electrically voltage-free state.
If the frequency inverter is connected to a motor and a gear, the Ex designations of the motor and
gear must also be taken into account!
Safety information
The increased danger in areas with combustible dust requires that the general safety and commissioning
instructions are strictly complied with. The drive must comply with the specifications in the
6052101
. Explosive dust concentrations can cause explosions if ignited by hot or sparking objects and this can
Project outline No.
cause severe or even lethal injuries to persons and significant damage to property.
It is absolutely essential that the persons authorised to use these motors and frequency inverters in hazardous
areas are trained in their correct use.
ATTENTION
The mains voltage must always be switched off and secured against being switched on again
before opening the frequency inverter to connect the electrical lines or any other work!
Higher temperatures than the maximum permitted surface temperature of the enclosure may be
present inside the frequency inverter and motor. The frequency inverter must therefore never be
opened in hazardous dust atmospheres or removed from the motor!
Unpermitted high dust deposits may not be allowed to build up as they restrict the cooling of the
frequency inverter!
Note: Repairs must only be carried out by Getriebebau NORD.
BU 0300 EN Subject to technical alterations 27
NORDAC trio SK 300E Manual
2.8.1 Modified SK 300E for compliance with category 3D
Only a modified frequency inverter is permissible for operating an SK 300E in the ATEX Zone 22. This
modification may only be implemented by NORD. The category 3D SK 300E can be recognised by the closed
technology unit cover (no LEDs) and by the rating plate on the outside of the frequency inverter.
Data on rating plate:
Type SK: 300E 3D TF
Mot. No.: Parts No. FI / Ident. No. FI
IP: 55
KW: According to frequency inverter rating plate
rpm: max. 3000
V D/Y: 400 (FI supply voltage)
Hz: max. 100
S: 1 (only with SK300E-201-340-B = 3)
II 3D T125°C: Frequency inverter
Year of manufacture: Month/Year
SK 300E with mounted rating plate
and without LEDs
II 3D T125°C
2.8.2 Options for ATEX Zone 22
To ensure an ATEX-conform NORDAC trio SK 300E system, permission for hazardous areas must be
available for the optional modules.
• All SK TU2-… technology units are not authorised.
•
All SK CU2-… customer units are authorised.
ParameterBox for operation is authorised.
•
SK ATX-POT ATEX potentiometer is authorised.
•
External braking resistor SK BR3-120/100-TI 0/1 is not authorised.
•
Adapter unit SK TI 0/2 for Harting attachment is not authorised.
•
28 Subject to technical alterations BU 0300 EN
2 Assembly and installation
2.8.2.1 ATEX potentiometer
(SK ATX-POT, Part. No. 275142000)
The 3D category SK 300E can be equipped with an ATEX-conform potentiometer which can be used for
setpoint adjustments (e.g. speed) on the device. The potentiometer is inserted in one of the M20 screw
connections.
The selected setpoint can be adjusted with a screwdriver. This component meets the ATEX requirements due
to the screw-on sealing cap. Continuous operation is only permitted with closed sealing cap.
Resistance of potentiometer 10 kOhm
Wire colour on potentiometer Name Terminal
Red +10V [11]
Black AGND /0V [12]
Green
Analog input+
Analog input 1
NOTE: When using a potentiometer with the frequency inverter SK 300E,
a customer unit Basic I/O or Standard I/O is always required!
Example assignment for a Basic I/O (SK CU2-BSC):
Reference voltage +10 V (max. 10 mA) [11]
AGND, 0V [12]
Analog input - [13]
Analog input + [14]
Digital input 2 [Enable right] [22]
Digital input 3 [Enable left] [23]
Digital input 4 [Parameter set switching] [24]
Supply voltage +15 V (max. 100 mA) [42]
Setpoint adjustment
with a screwdriver
[14]
BU 0300 EN Subject to technical alterations 29
NORDAC trio SK 300E Manual
2.8.3 Commissioning information
The frequency inverter and motor are suitable for use in Zone 22 according to their designation - nonconductive dusts.
The designation is as follows:
II 3D T125°C
In Zone 22, the cable entries must meet at least protection class IP 55. Unused apertures must be sealed with
blind plugs (minimum protection class IP 55).
The motors are protected against overheating by the frequency inverter. This is implemented by evaluation of
the motor PTC by the frequency inverter. To ensure this function, the digital input 1 must be set to the function
"PTC" (P420 = 13). In addition, it must be ensured that a NORD motor is selected from the motor list (P200).
If a motor from a different manufacturer is used, the motor parameter data (P201 to P207) must be compared
with the motor name plate. In addition, the frequency inverter must be parameterised so that the motor cannot be
operated with a speed greater than 3000 rpm. The "maximum frequency" for a four pole motor must be set to a
value smaller than or equal to 100Hz (P105 ≤ 100). The maximum permissible drive speed of the gears must also
be taken into account here. In addition, the "I²t-Motor" monitoring must be switched on in parameter P535=1.
Necessary parameter settings in overview:
Parameter Setting value Factory setting Description
P105
Maximum
frequency
P200
Motor list
P201 – P207
Motor data
P420
Function Dig.
input 1
P535
I²t motor
≤ 100 Hz [50]
Select the appropriate
motor output
Data as per name plate [xxx]
[13] PTC input [13]
[1] switched on [0] The I²t monitoring of the motor must be switched on.
[0]
Note: Details regarding the permissible option modules for hazardous areas (ATEX Zone 22)
with the frequency inverter NORDAC trio SK 300E can be found in Chap. 2.8.2.
This data is based on a four pole motor. Normally,
the value may only be so big that a motor speed of
3000 rpm is not exceeded.
If a NORD motor is used, the preset motor data can
be called up.
If a motor from another manufacturer is used, the
motor data on the rating plate must be entered.
The digital input 1 must be parameterised as the PTC
to ensure temperature monitoring of the motor.
30 Subject to technical alterations BU 0300 EN
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