NORD B1091-1 User Manual
GB
B 1091-1
Motors in fi operation for Category 3D
Planning guideline for B 1091
Motors in fi operation for Category 3D – Planning guideline for B 1091
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Proper use of three-phase asynchronous motors in frequency
inverter operation
Compliance with the planning guide for the operating and installation instructions B1091, and the
operating instructions for the frequency inverter is essential for correct operation and the fulfilment
of any warranty claims. Read the operating and installation instructions before starting work with
the motors and frequency inverters.
These operating instructions contain important information about servicing. They must therefore be
kept close to the motor.
The asynchronous motors and frequency inverters are intended for industrial and commercial systems
for the movement of various drive components and applications.
All details regarding technical data and permissible conditions at the installation site must be complied
with.
Commissioning (commencement of the intended use) is not permitted until it has been ensured that
the machine complies with the EMC Directive 2004/108/EEC and that the conformity of the end
product meets the Machinery Directive 2006/42/EEC (observe EN 60204).
Getriebebau NORD GmbH & Co. KG, 2013
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2 B 1091-1 GB-3213
Documentation
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Documentation
Designation: B1091-1
Part No.: 605 21 02
Series: Three-phase asynchronous
Frequency inverter
series:
Motor series: Standard, ATEX
Motor types:
Version list
motors in frequency inverter
operation
SK 2xxE, SK 5xxE
IE1, IE2
single phase
Size 63S/4 … 132MA/4
Planning Guideline
Name of previous issues Remarks
B1091-1 GB, February 2013
Part No. 605 2102 / 0613
B1091-1 GB, August 2013
Part No. 605 2102 / 3213
First issue, based on B1091-1 DE / January 2013
Revision of layout and correction of errors
Table 1: Version list
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G
Validity
This Planning Guideline for the operation and instructions B 1091 describes the planning requirements
for NORD three-phase asynchronous motors supplied by frequency inverters for Zone 22.
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Publisher
Getriebebau NORD GmbH & Co. KG
Getriebebau-Nord-Straße 1 D-22941 Bargteheide http://www.nord.com/
Tel.: +49 (0) 45 32 / 289-0 Fax +49 (0) 45 32 / 289-2555
=== Ende der Liste für Textmarke Copyright ===
B 1091-1 GB-3213 3
Motors in fi operation for Category 3D – Planning guideline for B 1091
4 B 1091-1 GB-3213
Table of Contents
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Table of Contents
=== Ende der Liste für Textmarke Inhaltsverzeichnis == =
1. Technical explanations ............................................................................................................................... 8
1.1 General .............................................................................................................................................. 8
1.2 Overview ............................................................................................................................................ 8
1.3 Wiring: ................................................................................................................................................ 9
1.4 Commissioning .................................................................................................................................. 9
1.5 Assignment of the frequency inverter and selection of the operating mode ..................................... 10
1.6 Examples ......................................................................................................................................... 11
1.6.1 1. Example: motor 100L/4 .................................................................................................. 11
1.6.2 2. Example: motor 100L/4 .................................................................................................. 14
1.7 Motor data for parameterisation of the frequency inverter ................................................................ 15
1.7.1 Parameterisation data for the 50 Hz characteristic curve, IE1 and IE2 motors ................... 15
1.7.2 Parameterisation data for the 87 Hz characteristic curve, IE1 and IE2 motors ................... 16
1.7.3 Parameterisation data for the 100 Hz characteristic curve, IE1 and IE2 motors ................. 17
2. Technical Data ........................................................................................................................................... 18
2.1 Motors .............................................................................................................................................. 18
2.1.1 Motors, 50 Hz nominal point ............................................................................................... 19
2.1.2 Motors, 87 Hz nominal point ............................................................................................... 20
2.1.3 Motors, 100 Hz nominal po int ............................................................................................. 21
2.2 Motors with external fan ................................................................................................................... 22
2.2.1 Motors with external fan, 50 Hz nominal point .................................................................... 23
2.2.2 Motors with external fan, 87 Hz nominal point .................................................................... 24
2.2.3 Motors with external fan, 100 Hz nominal point .................................................................. 25
3. Appendix .................................................................................................................................................... 26
3.1 Abbreviations ................................................................................................................................... 26
3.2 Legend / Formula symbols ............................................................................................................... 26
B 1091-1 GB-3213 5
Motors in fi operation for Category 3D – Planning guideline for B 1091
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List of illustrations
=== Ende der Liste für Textmarke Abbildungsverzeichni s ===
Figure 1: Selection of V/f characteristic curves ...................................................................................................... 10
Figure 2: Motor 100L/4, 50 Hz characteristic curve ............................................................................................... 11
Figure 3: Motor 100L/4, 100 Hz characteristic curve ............................................................................................. 12
Figure 4: Motor 100L/4, 87 Hz characteristic curve ............................................................................................... 13
6 B 1091-1 GB-3213
List of tables
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List of tables
=== Ende der Liste für Textmarke Tabellenverzeichnis = = =
Table 1: Version list ................................................................................................................................................. 3
Tabelle 2: Parameterisation data for the 50 Hz characteristic curve, IE1 motors .................................................. 15
Tabelle 3: Parameterisation data for the 50 Hz characteristic curve, IE2 motors .................................................. 15
Tabelle 4: Parameterisation data for the 87 Hz characteristic curve, IE1 motors .................................................. 16
Tabelle 5: Parameterisation data for the 87 Hz characteristic curve, IE2 motors .................................................. 16
Table 6: Parameterisation data for the 100 Hz characteristic curve, IE1 motors ................................................... 17
Table 7: Parameterisation data for the 100 Hz characteristic curve, IE2 motors ................................................... 17
Table 8: IE1 and IE2 motors, 50 Hz nominal point ................................................................................................ 19
Table 9: IE1 and IE2 motors, 87 Hz nominal point ................................................................................................ 20
Table 10: IE1 and IE2 motors, 100 Hz nominal point ............................................................................................ 21
Table 11: IE1 and IE2 motors with external fan, 50 Hz nominal point ................................................................... 23
Table 12: IE1 and IE2 motors with external fan, 87 Hz nominal point ................................................................... 24
Table 13: IE1 and IE2 motors with external fan, 100 Hz nominal point ................................................................. 25
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B 1091-1 GB-3213 7
Motors in fi operation for Category 3D – Planning guideline for B 1091
1. Technical explanations
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1.1 General
The Category 3D motors supplied by NORD DRIVESYSTEMS comply with standard EN 50281-1-1
(electrical equipment for use in areas with inflammable dust) and EN 50014 (Electrical equipment for
explosion hazard areas). Category 3D motors with efficiency class IE2 comply with the standards
EN 60079-0 and EN 60079-31. In both versions the insulation of the windings is generally designed for
operation with frequency inverters. For operation with frequency inverters, the motors are always
equipped with triple thermistors as per DIN 44082.
For variable speed drives, the thermistor is the most important protective element for compliance with
the maximum surface temperature, which is stated in the type plate of the motor.
As the thermistor only provides an indirect temperature monitoring of some components of the
motor, e.g. the motor shaft, it is necessary to observe all the specifications stated in this
planning guideline.
The operating ranges stated in the Appendix have been checked in the course of extensive test runs
and only these ranges are approved. Compliance with the listed procedures is therefore a prerequisite
for the planning and commissioning of Device Group II regulated drive units in Zone 22 (nonconducting dust).
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1.2 Overview
Necessary frequency inverter characteristics:
• Only frequency inverters with a vector regulation process which provides load-dependent terminal
voltage adjustment in the low speed range may be used.
• The maximum output voltage of the frequency inverter must not be less than 91% of the mains
voltage.
• The inverter must provide i²*t monitoring which is adjustable to the rated current for the motor.
• The pulse frequency of the output stage must be adjustable to 4 kHz or higher.
• If the inverter does not have an input for evaluation of the thermistor, the evaluation must be
carried out by a separate triggering device, which switches off the inverter. Operation without
evaluation of the thermistor is not permitted.
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8 B 1091-1 GB-3213
1 Technical explanations
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1.3 Wiring:
• No filters which come into the resonance range may be wired between the inverter and the motor
The resulting overvoltage could damage the insulation of the cable or the motor.
• Only filters which are prescribed or approved by the supplier of the frequency inverter may be
used.
• The wires used must have an insulation strength of at least 2,000 VDC.
• Additional mains or motor chokes reduce the output voltage of the frequency inverter and are not
considered in this planning guideline. Chokes shift the threshold of the field weakening range
downwards and the field weakening becomes greater.
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1.4 Commissioning
• Set the pulse frequency of the output stage to 4 - 6 kHz. With NORD frequency inverters, 6 kHz
corresponds to the standard frequency of the frequency inverter.
• Parameterise the vector regulation to the motor used.
• The i²*t monitoring must be set to the rated current for the motor.
• The maximum frequency must be set according to the application and must not exceed 100 Hz.
• Activate the thermistor evaluation.
• Check the thermistor monitoring by interrupting the cable connection to the frequency inverter.
ATTENTION
The maximum permissible input speed of the gear unit must be observed.
Exceeding the permissible speed may cause overheating and dam age to the component s of the gear units, up to
the complete destruction of the gear unit.
For frequency inverter operation the speed of the motor must be limited according to the planning specificatio ns.
Gear unit damage - high speed
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B 1091-1 GB-3213 9
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