NORD BU0710 User Manual
Supplementary Operating Instructions
NORDAC SK 700E Frequency Inverter
With Positioning Card (Special Extension Module)
SK XU1-POS
SK 700E with optional parameter box
T. Nr. 0603 7182
Getriebebau NORD
GmbH & Co. KG
... NORD Gear
BU 0710 GB
Last Update: February 2002
2 BU 0710 GB
NORDAC SK 700E Frequency Inverter
Instructions for the safety and use of
variable frequency converters
(as provided in the 73/23/EEC low-voltage directive)
1. General
Depending on their type of enclosure, variable frequency
inverter may have live, bare, in some cases even moving or
rotating parts as well as hot surfaces during operation.
Inadmissibly removing the required covers, improper use,
incorrect installation or handling can be dangerous and may
lead to serious damage to persons or to property.
See the documentation for more detailed information.
Any transport, installation, starting-up or maintenance work
shall be performed by properly qualified, skilled and
competent personnel (IEC 364 or CENELEC HD 384
respectively or DIN VDE 0100 and IEC 664 or DIN VDE
0110 and national accident prevention regulations to be
observed).
Qualified, skilled personnel as mentioned in these basic
safety instructions is understood to refer to persons who are
familiar with the installation, assembly, setting-up and
operation of the product and who have the qualifications
required for the job of which they are in charge.
2. Intended use
Variable frequency inverter are components designed to be
integrated into electrical installations or machinery.
If the converters are installed in machines, they must not be
put into operation (in other words, operation as intended by
the manufacturer must not begin) until it has been
established that the machine in question actually meets the
requirements mentioned in the EC directive 89/392/EEC
(Directive For Machines); EN 60204 is to be observed.
The device must not be put into operation (i.e. operation as
intended by the manufacturer must not be started) unless
the stipulations of the EMC directive (89/336/EEC) are
fulfilled.
Variable frequency inverter meet the requirements stated in
the low-voltage directive 73/23/EEC. Likewise the accorded
standards of the series prEN 50178/DIN VDE 0160 in
conjunction with EN 60439-1/ VDE 0660 Part 500 and EN
60146/ VDE 0558 are applied to the variable frequency
inverter.
Refer to the rating plate and the documentation for details
on technical data and connecting requirements and do not
fail to observe them and to follow instructions.
3. Transport, storage
Follow the instructions for transport, storage, and proper
handling.
Ensure climatic conditions as specified in prEN 50178.
4. Installation
The devices must be installed and cooled as directed in the
relevant documentation.
The variable frequency inverter must be protected against
inadmissible stress. Special care should be taken not to bend
components or to change the spacing of insulation during transport
and handling. Do not touch electronic components and contacts.
Variable frequency inverter contain electrostatically sensitive
components which are easily damaged through improper handling.
Electrical components must not be damaged or destroyed
mechanically (potential health risks!).
5. Electrical connection
Follow the applicable national accident prevention rules (e.g. VBG
4) when working on variable frequency inverter while they are live.
Electrical installation is to be performed in accordance with
applicable rules and regulations (e.g. regarding conductor cross
sections, fusing, PE connection). Apart from these, more
instructions may be mentioned in the documentation.
Recommendations for meeting EMC standards in installation - for
instance with regard to screening, earthing, filter arrangement and
the routing of lines - are found in the converter documentation. CEmarked variable frequency inverter are always subject to such
instructions as well. It is the responsibility of the machine or plant
manufacturer to ensure that the limit values stipulated by EMC
legislation are duly met.
6. Operation
It may be necessary to provide facilities in which variable
frequency inverter are installed with additional monitoring and
protecting devices to satisfy the applicable safety regulations, e.g.
the law on technical working materials, accident prevention
regulations etc. Modifications of the variable frequency inverter by
means of the operating software are allowed.
Do not touch live parts of the device or power terminals right after
the converter has been disconnected from the supply voltage as
capacitors may still be charged. The information plates on the
driving current converter will give you precise details on the
subject.
Keep all covers closed during operation.
7. Service and maintenance
As described in the manufacturer’s documentation.
Do keep these Safety Instructions for future reference!
Please note: Validity of these Supplementary Operating Instructions is contingent on the com-
plementary use of the basic Operating Instructions for the NORDAC SK 700E frequency inverter which are also enclosed with the unit delivered.
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Table of contents
1 GENERAL ............................................................................................................................ 6
2 INSTALLATION PROCEDURE ........................................................................................... 7
2.1 Safety and installation instructions ......................................................................................................7
2.1.1 How to install Posicon special extension modules ............................................................................................... 9
2.2 Posicon I/O connection ........................................................................................................................11
2.3 Incremental encoder connection ........................................................................................................12
2.4 Absolute encoder connection .............................................................................................................12
3 FUNCTIONAL CHARACTERISTICS................................................................................. 13
3.1 Introduction ...........................................................................................................................................13
3.2 Actual position recognition .................................................................................................................13
3.2.1 Position recognition with an incremental encoder .............................................................................................. 13
3.2.2 Position recognition with an absolute value encoder.......................................................................................... 15
3.2.3 Encoder monitoring ............................................................................................................................................ 15
3.2.4 Positioning with single-turn absolute value encoders and incremental shaft encoders used in absolute mode . 16
3.3 Setpoint setting.....................................................................................................................................17
3.3.1 Position array – Absolute setpoint position via digital inputs .............................................................................. 17
3.3.2 Position increment array – Relative setpoint position via digital inputs .............................................................. 17
3.3.3 16-bit bus mode ................................................................................................................................................. 17
3.3.4 32-bit bus mode ................................................................................................................................................. 17
3.3.5 Position array – Bus transmission of absolute setpoint position......................................................................... 17
3.3.6 Position increment array – Bus transmission of absolute setpoint position ........................................................ 18
3.4 Teach-in programming.........................................................................................................................18
3.5 Modes of position control (P600) ........................................................................................................18
3.6 Position control.....................................................................................................................................19
3.7 Relay signals .........................................................................................................................................20
4 POSITIONING PARAMETERS.......................................................................................... 21
5 SYSTEM START-UP.......................................................................................................... 26
6 FAULT CLEARANCE ........................................................................................................ 27
6.1 Error messages.....................................................................................................................................27
6.2 Table of errors and possible causes ..................................................................................................28
7 BUSINESS ESTABLISHMENTS & SALES OFFICES IN GERMANY ............................. 30
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NORDAC SK 700E manual Posicon special extension
1 General
NORDAC vector frequency inverters are voltage source d.c. link inverters with microprocessor electronics
designed to control the speed of three-phase motors.
Providing an incremental encoder on the motor and/or an absolute encoder on the output shaft along with
using the optional SK_XU1_POS Posicon positioning card will enhance the standard components so as to
constitute a drive system capable of performing positioning tasks in a highly precise manner.
• 252 positions can be programmed to be approached by the unit controlled
• Position control in the destination window; the unit controlled will retain the desired position
even with substantial fluctuations of the load.
• Distance calculation ensures that the driven assembly is moved into the destination position
accurately and within the shortest possible time
• Control options not only provide for setting positions but also for pre-setting the step widths
required for moving from one position to the next (position increments)
• Also possible: transmission of setpoint positions via a field bus interface.
Designed to be plugged into the control board, the add-on positioning card fits into the standard housing of the
frequency inverter so that the overall size of the device is not increased.
The positioning card is equipped with a processor of its own which will determine the speed setpoint the
inverter will have to ensure.
The parameters which are required for distance calculation are inserted into the existing inverter menu
structure as an additional menu group.
The position setpoints can be applied to the digital inputs which are additionally provided on the positioning
card, or transmitted via the USS protocol or another field bus system respectively.
By switching from one parameter set to another, the operator may quit speed control in order to access
distance calculation or position control, or vice versa.
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2 Installation procedure
2 Installation procedure
2.1 Safety and installation instructions
NORDAC SK 700E frequency inverters are operational equipment for use in industrial power plant. That is
why touching them may cause, due to the voltages at which they are operated, serious injuries or even
death.
• Only skilled personnel qualified in electrotechnical professions is allowed to perform
installation or any other work on the devices provided that these have been previously
disconnected from supply. The personnel involved must have access to the operating
instructions any time and observe them conscientiously without exception.
• Local regulations governing the installation of electric plant as well as any regulations for
accident prevention have to be followed.
• The device continues to be dangerously live for up to 5 minutes after its disconnection from
the mains. Accordingly the device must not be opened or either the covers or the control
panel be detached until 5 minutes after it has been disconnected from supply. Reattach all
covers before switching the mains voltage on again.
• Even when the motor has stopped (e.g. following electronic disable, jamming of the drive, or
a short circuit of the output terminals), the supply terminals, the motor terminals, and the
terminals for the braking resistor can be dangerously live. Even if the motor is not running it
can by no means be assumed that it is also electrically isolated from the mains.
• Caution, parts of the control board and especially the female connector for the detachable
equipment boxes are dangerously live, too. No mains potential is applied to the control
terminals, however.
• Caution, certain setting configurations may cause the inverter to start up automatically when
it is connected to the mains.
• The printed circuit boards carry highly sensitive MOS semiconductor components for which
static electricity can be particularly harmful. That is why you should avoid to touch the
conductive tracks or electronic components with your hands or with metallic objects. When
connecting the cables, use insulated screw drivers to manipulate the screws of the terminal
strips.
• The inverter is intended for permanent connection only and must not be operated without
having been effectively earthed as stipulated by the local regulations for high leakage
currents (> 3.5 mA). German VDE 0160 demands that either a second earth conductor be
laid or that the earth conductor cross section be 10 mm
• If to conform with local regulations the leakage current must not contain any proportion of
direct current at all, conventional fault-current circuit breakers alone will not afford
sufficient protection where three-phase frequency inverters are concerned. The construction
of standard fault-current circuit breakers is supposed to meet the new VDE 0664
requirements.
• NORDAC SK 700E frequency inverters are maintenance-free provided that they are
operated according to instructions. In a dusty environment the cooling surfaces must be
cleaned with compressed air at regular intervals.
CAUTION! DANGER!
The power section may still be live up to 5 minutes after disconnection from the mains.
2
minimum.
Inverter terminals, motor supply cables, and motor terminals may be live, too!
Touching exposed or unconnected terminals, cables, or parts of the device may lead to
serious injuries or even death!
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NORDAC SK 700E manual Posicon special extension
CAUTION
• Ensure that neither children nor the general public will have access to the device or a
chance to manipulate it!
• The device must not be used for any purpose other than the one intended by the
manufacturer. Unauthorized modifications and the use of replacement parts and
attachments which are not sold or recommended by the manufacturer, may cause fire,
electric shock, and injuries.
• Keep this Manual where it will be accessible to any person involved in using the device
or hand it to him/her on your own accord!
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2.1.1 How to install Posicon special extension modules
IMPORTANT
Only properly qualified personnel who can be assumed to be aware of and adhere to the
safety and warning instructions both generally applicable and contained in this document
should be allowed to perform installation work.
2 Installation procedure
1. Switch off mains voltage, wait a few
minutes as directed.
2. Loosen the 2 screws by which the
cover grille is fixed to the connection
area, remove it, and wedge the device
cover out of its slots or simply pull it
off.
3. Move the locking pin to position
"open“.
4. Push the Posicon special extension
board into the lower guide rail exerting
a little pressure until it snaps in. This
may be easier when you take out the
customer interface first and reinstall it
after you have fitted the Posicon
special extension.
5. Set the locking pin to its "closed"
position.
6. Release the connection plug and pull it
off. Make the connections as required.
Then fit the pins again, and make sure
that they lock.
Locking pin
Technical unit
Customer interface
Special extension
7. Reattach all covers.
OPEN
CLOSED
Locked
Released
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NORDAC SK 700E manual Posicon special extension
How to remove the special extension
module :
1. Switch off the mains voltage, wait a few
minutes as directed.
2. Loosen the 2 screws which hold down the
cover grille of the connection area, remove
it, and wedge the device cover out of its
slots, or simply pull it off.
3. Set the locking pin to the "open" position.
4. Use a screwdriver to unlatch the special
extension module (as shown in the figure to
the right) and pull it out completely with your
hand. It may be more convenient to
temporarily remove the customer interface.
5. If you have done so, fit it back into the inverter again.
6. Set the locking pin to
the "closed" position.
7. Reattach all covers.
Customer interface
Special extension
Customer interface
Special extension
10 BU 0710 GB
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