NORD BU0750 User Manual
GB
BU 0750
NORDAC SK 750E
Manual for Frequency inverters
NORDAC SK 750E Manual Safety information
SK 750E Frequency Inverter
Safety and operating instructions for
drive power converters
(as per: Low Voltage Directive 2006/95/EEC )
1. General
During operation, drive power converters may, depending on their
protection class, have live, bare, moving or rotating parts or hot
surfaces.
Unauthorised removal of covers, improper use, incorrect installation
or operation causes a risk of serious personal injury or material
damage.
Further information can be found in this documentation.
All transportation, installation, 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 assembly,
installation, commissioning and operation of this product and who
have the relevant qualifications for their work.
2. Proper use in Europe
Drive power converters are components intended for installation in
electrical systems or machines.
When installed in machines, the drive power converter cannot be
commissioned (i.e. commencement of the proper use) until it has
been ensured that the machine meets the provisions of the
EC Directive 2006/42/EEC (Machine Directive); EN 60204 must also
be complied with.
Commissioning (i.e. implementation of the proper use) is only
permitted if the EMC Directive (2004/108/EEC) is complied with.
Drive power converters with the CE mark meet the requirements of
the Low Voltage Directive 2006/95/EEC. The harmonized standards
stated in the Declaration of Conformity are used for the drive power
converters.
Technical data and information for connection conditions can be
found on the name plate and in the documentation, and must be
complied with.
The drive power converters may only be used for the safety
functions which are described and for which they have been
explicitly approved.
3. Transport, storage
Information regarding transport, storage and correct handling must
be complied with.
4. Installation
The installation and cooling of the equipment must be implemented
according to the regulations in the corresponding documentation.
The drive power converters must be protected against
impermissible loads. Especially during transport and
handling, components must not be deformed and/or
insulation distances must not be changed. Touching of
electronic components and contacts must be avoided.
Drive power converters have electrostatically sensitive
components, which can be easily damaged by incorrect
handling. Electrical components must not be mechanically
damaged or destroyed (this may cause a health hazard!).
5. Electrical connections
When working on live drive power converters, the applicable
national accident prevention regulations must be complied
with (e.g. VBG A3, formerly VBG 4).
The electrical installation must be implemented according to
the applicable regulations (e.g. cable cross-section, fuses,
ground 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 drive power converter
documentation. These instructions must be complied with
even with CE marked drive power converters. Compliance
with the limiting values specified in the EMC regulations is
the responsibility of the manufacturer of the system or
machine.
6. Operation
Where necessary, systems where drive power converters
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.
The parameterisation and configuration of the drive power
converter must be selected so that no hazards can occur.
All covers must be kept closed during operation.
7. Maintenance and repairs
After the drive power converter is disconnected from the
power supply, live equipment components and power
connections should not be touched immediately, because of
possible charged capacitors. Observe the relevant
information signs located on the drive power converter.
Further information can be found in this documentation.
These safety instructions must be kept in a safe place!
2 BU 0750 GB-3311
NORDAC SK 750E Manual Concerning this document
Designation of previous issues
SW status
Comments
BU 0750 GB, December 2004
V 3.1 R1
First issue based on BU 0700 DE
BU 0750 GB, December 2005
V 3.1 R2
Revision, supplementation and correction
BU 0750 GB, April 2006
V 3.2 R0
Revision, wall-mounting kit, motor mounting,
differentiation of the options for IP54 and IP65
version, cable glands
BU 0750 GB, March 2007
Part No.: 6077502 / 1207
V 3.2 R0
Data backup via P550 only right hand slot, Section 3.2
right / left slot
BU 0750 GB, March 2008
Part No.: 6077502 / 1208
V3.4 R4
Control for electromagnetic motor brakes, P217,
P426, P533, P535
BU 0750 GB, August 2011
Part No.: 6077502 / 3311
V3.5 R1
Addition of UL-relevant details; revision of Sections
2.6, 3.3.3, 3.3.4; revision of parameter P208, P215;
P216, function of digital inputs: 47/48;
addition of environmental classes, long-term storage
and min. brake resistances (Section 9)
Documentation
Designation: BU 0750 EN
Part No.: 607 75 01
Device series: SK 750E
Version list
Publisher
Getriebebau NORD GmbH & Co. KG
Rudolf-Diesel-Str. 1 D-22941 Bargteheide http://www.nord.com/
Tel.: +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 necessary for fault-free operation and the
acceptance of any warranty claims. These operating instructions must be read before
working with the device!
These operating instructions contain important information about servicing. They must
therefore be kept near to the device .
SK 750E 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.
SK 750E frequency inverters are devices for fixed installation in control cabinets. All details
regarding technical data and permissible conditions at the installation site must be complied
with.
Commissioning (commencement of the intended use) is prohibited 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, 2011
BU 0750 GB-3311 3
NORDAC SK 750E Manual
1 GENERAL INFORMATION .......................................................................................................... 6
2 ASSEMBLY AND INSTALLATION ............................................................................................ 13
1.1 Overview ................................................................................................................... 6
1.2 Delivery ..................................................................................................................... 6
1.3 Scope of supply ........................................................................................................ 7
1.4 Safety and installationinformation ............................................................................ 8
1.5 Certifications ............................................................................................................. 9
1.5.1 UL and cUL certification ................................................................................... 9
1.5.2 European EMC Directive ................................................................................ 10
1.6 Nomenclature / Type code ..................................................................................... 11
1.7 Version with protection class IP54 / IP65 ............................................................... 12
2.1 Motor-integrated and close to motor layouts .......................................................... 13
2.2 Installation .............................................................................................................. 14
2.3 Dimensions of the SK 750E ................................................................................... 15
2.4 Attachment accessories for the SK 750E ............................................................... 16
2.5 SK 750E wall mounting kit ...................................................................................... 16
2.5.1 Dimensions of the SK 750E with wall mounting kit ........................................ 17
2.6 Mounting of the SK750E directly on a motor .......................................................... 18
2.7 Wiring guidelines .................................................................................................... 19
2.8 Electrical Connection .............................................................................................. 20
2.9 Electrical connection of power unit ......................................................................... 20
2.9.1 Mains supply (PE, L1, L2, L3) ........................................................................ 22
2.9.2 Electromagnetic brake (+Br, -Br, PE) ............................................................. 22
2.9.3 Brake resistor (+B, -B, PE) ............................................................................. 22
2.9.4 Motor cable (U, V, W, PE) .............................................................................. 22
2.9.5 Temperature sensor (T1, T2) ......................................................................... 23
2.9.6 PowerConnection Terminals .......................................................................... 23
2.9.7 Control connections (optional) ....................................................................... 24
2.9.8 Cable connections .......................................................................................... 25
3 OPTIONS .................................................................................................................................... 26
3.1 Modular options ...................................................................................................... 26
3.2 Overview of Technology Units ................................................................................ 27
3.2.1 Installing the Technology Unit ........................................................................ 29
3.2.2 ControlBox SK TU2-CTR ............................................................................... 30
3.2.3 PotentiometerBox SK TU2-POT .................................................................... 35
3.2.4 DeviceNet Module SK TU2-DEV .................................................................... 35
3.2.5 Profibus Module SK TU2-PBR ....................................................................... 36
3.2.6 CANopen BUS Module SK TU2-CAO ............................................................ 36
3.2.7 InterBus Module SK TU2-IBS ........................................................................ 37
3.2.8 AS interface SK TU2-AS1 .............................................................................. 37
3.2.9 Retrofit kit, SK TU2 cover ............................................................................... 38
3.3 Customer unit overview .......................................................................................... 39
3.3.1 Installation of customer units .......................................................................... 40
3.3.2 Removal of Customer Units ........................................................................... 41
3.3.3 Customer unit Basic I/O ................................................................................. 42
3.3.4 Customer unit Standard I/O............................................................................ 43
3.3.5 Multi I/O Customer Unit .................................................................................. 44
3.3.6 Multi I/O 20mA Customer Unit........................................................................ 45
3.3.7 BUS Customer Units, SK CU1-CAN-RJ, SK CU1-PBR ................................. 46
3.4 Overview of Special Extensions ............................................................................. 47
3.4.1 Installation of the special extension units ....................................................... 48
3.4.2 Removal of Special Extensions ...................................................................... 49
3.4.3 Special Extension Encoder I/O ...................................................................... 50
3.4.4 Special Extension PosiCon I/O ...................................................................... 51
3.5 Control Terminals of Customer I/Os ....................................................................... 52
3.6 Colour and contact assignments for the incremental encoders ............................. 54
4 BU 0750 GB-3311
Table of Contents
4 OPERATION AND DISPLAY ...................................................................................................... 55
4.1 Control element connection variants ...................................................................... 56
4.2 ParameterBox, Handheld Version, SK PAR-2H ..................................................... 57
4.3 ParameterBox Installation Version, SK PAR-2E .................................................... 58
4.3.1 Electrical connection ...................................................................................... 59
4.4 Functions of the ParameterBox .............................................................................. 60
4.5 Parameters of the ParameterBox ........................................................................... 67
4.6 ParameterBox error messages .............................................................................. 70
4.7 Data transfer with NORD CON ............................................................................... 73
5 NORD CON SOFTWARE ........................................................................................................... 74
5.1 General Information ................................................................................................ 74
6 COMMISSIONING ....................................................................................................................... 76
6.1 Basic settings ......................................................................................................... 76
6.2 Basic operation - Quick start guide ........................................................................ 77
6.3 Minimum configuration of control connections ....................................................... 78
7 PARAMETERISATION ............................................................................................................... 79
7.1 Array parameter display ......................................................................................... 80
7.2 Operating displays .................................................................................................. 81
7.3 Basic parameters .................................................................................................... 82
7.4 Motor data / characteristic curve parameters ......................................................... 87
7.5 Speed control ......................................................................................................... 90
7.6 Control clamps ........................................................................................................ 94
7.7 Extra functions ...................................................................................................... 109
7.8 PosiCon ................................................................................................................ 119
7.9 Information ............................................................................................................ 120
7.10 Parameter overview, User settings .................................................................... 126
8 ERROR MESSAGES ................................................................................................................ 133
8.1 ControlBox display ................................................................................................ 133
9 TECHNICAL DATA ................................................................................................................... 139
9.1 General Data ........................................................................................................ 139
9.2 Electrical Data 230V ............................................................................................. 140
9.3 Electrical data 400V .............................................................................................. 140
9.4 Electrical data for UL/cUL certification ................................................................. 141
10 ADDITIONAL INFORMATION ................................................................................................ 142
10.1 Setpoint processing in the SK 750E ................................................................... 142
10.2 PID controller for the SK 750E ........................................................................... 144
10.3 Process controller ............................................................................................... 146
10.3.1 Process controller application example ...................................................... 146
10.3.2 Process controller parameter settings ........................................................ 147
10.4 Electromagnetic compatibility (EMC) ................................................................. 148
10.5 EMC limit value classes...................................................................................... 148
10.6 Maintenance and servicing information .............................................................. 150
10.6.1 Maintenance Instructions ........................................................................... 150
10.6.2 Repair information ...................................................................................... 151
11 KEYWORD INDEX .................................................................................................................. 152
BU 0750 GB-3311 5
NORDAC SK 750E Manual
1 General information
The NORDAC SK 750E series is based on the proven SK 700E series. However, it is designed for use in
harsher ambient conditions (up to 60°C, at least IP54). These devices are characterised by the high modularity
and excellent control characteristics.
These devices are provided with sensorless vector current control system which in combination with
asynchronous three-phase motor types constantly ensures an optimised voltage-to-frequency ratio. This has
the following significance for the drive: Peak start-up and overload torques at constant speed.
Due to its modular construction, the variously combinable technology units, customer units and special
extension units, this device series is suitable for all possible applications.
Due to the wide range of setting options, these inverters are capable of controlling all three-phase motors. The
power range is from 5.5kW to 22kW (3~ 400V...480V) and 5.5 to 11kW (3~ 200…240V) with integrated line
filter. The overload capacity of these devices is 150% for 60 seconds and 200% for 3.5 seconds.
This manual is based on the device software V3.5R1 (P707) for the SK 750E. 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/).
1.1 Overview
Properties of the basic device:
High starting torque and precise motor speed control setting with sensorless current vector control
Can be mounted next to each other without additional spacing
Permissible environmental temperature range: 0 to 50°C (or up to 60°C please refer to the technical
data)
Integrated EMC line filter for limit curve A as per EN55011
Automatic measurement of the stator resistance
Programmable direct current braking
Integrated brake chopper for 4 quadrant drive
Integrated RS485 interface on M12 socket
Four separate online switchable parameter sets
High protection class IP54 (air cooling), IP65 with water cooled version (special version)
NOTE: The characteristics of the basic device with an additional technology unit, customer unit or special
extension are described in Section 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 carry out a thorough assessment.
Important! This also applies even if the packaging is undamaged.
6 Subject to technical amendments BU 0750 GB-3311
1. General information
NOTE:
Additional bus manuals are available –
BU 0020 … BU 0090..
>>> www.nord.com <<<
1.3 Scope of supply
Standard version: State the protection class, IP54 (air cooling) / (IP65 water cooling as special
version)
→ when ordering!
Integrated brake chopper
Integrated EMC line filter for limit curve A as per EN55011
Blank cover for the 1st and 2nd technology unit slots
Shield angle
Operating Instructions
Available accessories: Brake resistor with high protection class on request, otherwise as for SK 700E
(IP20)
Interface converter RS232 RS485 (additional description BU 0010)
NORD CON, PC parameterisation software > www.nord.com <
ParameterBox, external control panel with LCD plain text display, connection cable
(supplementary description BU 0040 DE)
Technology Unit:
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 (1.5MBaud)
SK TU2-PBR-24V, with external 24V supply (12MBaud)
SK TU2-PBR-KL, Connection to terminal bar with cover (1.5MBaud)
SK TU2-CAN, CANbus, additional module for CANbus communication
SK TU2-CAO, CANopen, bus switching
SK TU2-DEV, DeviceNet, bus switching
SK TU2-IBS, InterBus, bus switching
SK TU2-AS1, AS interface, bus switching
Customer interfaces:
SK CU1-BSC, basic I/O, limited scope for signal processing
SK CU1-BSC, standard I/O, moderate scope for signal processing
SK CU1-MLT, multi-I/O, high level of scope for signal processing
SK CU1-MLT-20mA, multi-I/O, high level of scope for signal processing
SK CU1-CAN, CANbus I/O, bus switching via the CANbus
SK CU1-PBR, Profibus I/O, bus switching via Profibus DP
Special extension units:
SK XU1-POS, PosiCon I/O, positioning module
(Supplementary instruction BU 0710 GB)
SK XU1-ENC, Encoder I/O, incremental encoder input for speed control
BU 0750 GB-3311 Subject to technical amendments 7
NORDAC SK 750E Manual
CAUTION
The heat sink 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 before starting work.
ATTENTION
DANGER TO LIFE
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 carry voltage!
Touching open or free terminals, cables and equipment components can lead to severe injury
or death!
Work may only be carried out by qualified electricians and with the electrical supply to the
equipment disconnected.
1.4 Safety and installationinformation
NORDAC SK 750E frequency inverters are devices for use in industrial high voltage systems and are operated
at voltages which could lead to severe injuries or death if they are touched.
Installation and other work may only be carried out by qualified electricians and with the device
disconnected. The operating instructions must always be available to these persons and must be
strictly observed.
Local regulations for the installation of electrical equipment and accident prevention must be complied
with.
The equipment continues to carry hazardous voltages for up to 5 minutes after being switched off at
the mains. The equipment may only be opened or the cover or control element removed 5 minutes
after the equipment has been disconnected from the power supply. All covers must be put back in
place before the line voltage is switched back on again.
For safe isolation from the mains, all poles of the supply cable to the frequency inverter must be able
to be disconnected.
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 identical to electrical isolation from the mains.
Caution, even parts of the control card and, in particular, the connection plug for the removable
technology units can conduct hazardous voltages. The control terminals are mains voltage free.
Caution, with certain settings, the frequency inverter/motor can start up automatically after the mains
are switched on.
The circuit boards contain highly-sensitive MOS semiconductor components that are particularly
sensitive to static electricity. Avoid touching circuit tracks and components with the hand or metallic
objects. Only the terminal strip screws may be touched with insulated screwdrivers when connecting
the cables.
The frequency inverter is only intended for permanent connection and may not be operated without
effective earthing connections which comply with local regulations for large leakage currents
(> 3.5mA). VDE 0160 stipulates the installation of a second earthing conductor or an earthing
conductor cross-section of at least 10 mm2.
In case of three-phase frequency inverters, common ground-fault circuit interrupters are not suitable
only for protection if the local regulations do not permit possible DC components in the leakage
current. The standard FI circuit breaker must comply with the new design as per VDE 0664.
In normal use, NORDAC SK 750E frequency inverters are maintenance free. The cooling surfaces
must be regularly cleaned with compressed air if the ambient air is dusty.
8 Subject to technical amendments BU 0750 GB-3311
CAUTION
Children and the general public must be kept away from the equipment!
The equipment may only be used for the purpose intended by the manufacturer. Unauthorised
modifications and the use of spare parts and additional equipment which has not been
purchased from or recommended by the manufacturer of the device may cause fire, electric
shock and injury.
Keep these operating instructions in an accessible location and give them to all operators!
WARNING
This is a product with a restricted sale class as per IEC 61800-3. In a domestic environment this
product may cause high frequency interference, in which case the operator may be required to take
suitable measures.
An appropriate measure would be the inclusion of a recommended line filter.
UL File: E171342
1.5 Certifications
1.5.1 UL and cUL certification
(Use in North America)
“Suitable for use on a circuit capable of delivering not more than
5000 rms symmetrical amperes, 200…240 Volts or
380…480 Volts (three phase)” and “when protected by J class
fuses.” as indicated."
Suitable for use on a circuit capable of delivering not more than
5000A (symmetrical), 200...240V or 380...460 Volts (three
phase) and when protected by "J class fuses" as described in
Section 9.4.
NORDAC SK 750E frequency inverters have a motor overload
protection. Further technical details can be found in Section 9,
"Technical Data".
“Relays on extension units and customer interface units may
only be used at 230V ac maximum, same phase only.”
The relays of the extension units and customer interface units may only be used at max. 230V ac. The same
polarity must be used for all relays.
„Use 75°C Copper Conductor Only, Maximum Surrounding Air Temperature 50°C.”
"Copper cable with an insulation rating of at least 75°C must be used for connection. A maximum ambient
temperature of 50°C must be maintained.
Frequency inverter size1:
„The torque value for the field wiring terminals for mains circuit terminals and motor terminals must be 10.62 … 13.27 lb-in
(1.2 … 1.5Nm). The torque value for the supplemental terminal blocks, external brake resistor and thermal sensor must be
4.42 … 5.31 lb-in (0.5 … 0.6Nm).”
Frequency inverter size 1:
The tightening torque value for the terminals the mains and motor cables, must be between 10.62 … 13.27 lb-in
(1.2 … 1.5Nm). Control cable terminals, thermistor and PTC connections and connections to the brake resistor
must be tightened with 4.42 … 5.31 lb-in (0.5 … 0.6Nm).
Frequency inverter size2:
„The torque value for the field wiring terminals for mains circuit terminals and motor terminals must be 22.12 … 39.82 lb-in
(2.5 … 4.5Nm). The torque value for the supplemental terminal blocks and thermal sensor must be 4.42 … 5.31 lb-in
(0.5 … 0.6Nm). The torque value for the external brake resistor must be 10.62 … 13.27 lb-in (1.2 … 1.5Nm).”
Frequency inverter size 2:
The tightening torque value for the terminals the mains and motor cables, must be between 22.12 … 18.06 lb-in
(2.5 … 4.5Nm). Control terminal connections and thermistor/PTC connection must be tightened with
4.42 … 5.31 lb-in (0.5 … 0.6Nm).
BU 0750 GB-3311 Subject to technical amendments 9
1. General information
NORDAC SK 750E Manual
1.5.2 European EMC Directive
If the NORDAC SK 750E is installed according to the recommendations in this
instruction manual, it meets all EMC directive requirements, as per the EMC product
standard for motor-operated systems EN 61800-3.
(See also Chapter 8.3 Electromagnetic compatibility [EMC].)
10 Subject to technical amendments BU 0750 GB-3311
1. General information
NOTE
The nomenclature must always be provided in orders and for service and support cases!
SK 750E
-
55 1 - 3 40 - A - W - ABC
Special device design
(3 letters)
IP protection class of frequency inverter:
space = IP54 version (air cooling)
W = IP65 version (Water cooling)
(incl. lacquered PCB cards)
Integrated noise suppression filter:
A = Class A
Mains voltage:
x23 = 230V
x40 = 400V
Number of mains phases:
3 = 3 phase
Digits before decimal point for power:
1 = 0x.x0
2 = xx.00
Device nominal power (xx):
55 = 5.50kW, …
22 = 22.00kW
Device series:
SK 750E
1.6 Nomenclature / Type code
The NORDAC SK 750E frequency inverter has a nomenclature with the same structure as for 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.
BU 0750 GB-3311 Subject to technical amendments 11
NORDAC SK 750E Manual
Note
The IP65 components and IP66 options (technology units) for the water cooled IP65 version have an
additional "-C" and are modified with the special measures listed below!
Note
With the the IP65 version it must be ensured that the cable lines and cable connections are carefully
matched so that no leaks occur in the SK 750E or any other problems occur that could affect the
maintenance of the IP65 protection class!
1.7 Version with protection class IP54 / IP65
TheNORDAC SK 750E frequency inverter can be ordered in any size and therefore any power stage with the
protection classes IP54 (air cooling) or IP65 (water cooling). These versions can be differentiated by the type
designation. The water cooled version has a "-W" (→ Water cooling) at the end of the type designation.
The protection classes IP54 or IP65 must always be stated when ordering!
The protection classes are determined by the type of cooling. With the air cooled device, the integrated fans
determine the protection class IP54; with the IP65 devices this is determined by the flange to the water cooling.
With the technology units, customer interfaces and special extensions there are no restrictions of functionality
between the IP54 and IP65 versions.
IP54 version:
The protection class IP54 applies for the air cooled SK 750E. Both versions (motor-integrated, close to motor)
are available. The standard modules of the SK 300E (SK TU2-…) and SK 700E (SK CU1-…, SK XU1-…) can
be inserted.
IP65 version:
The water cooled IP65 version has an additional "-W" (→ Water cooling). Both versions (motor-integrated,
close to motor) are also available. In addition, for IP65 devices the technology units (SK TU2-…-C) of the
SK 300E, have an additional "-C" (Coated → lacquered PCBs) in their type designation. As with the IP54
devices, the same standard modules of the SK 700E are inserted as customer interfaces (SK CU1-...) and
special extensions (SK XU1-...).
Special measures:
Coated circuit boards
12 Subject to technical amendments BU 0750 GB-3311
2 Assembly and installation
Motor-integrated version:
Fig.: SK 750E in IP54 version (air cooling)
Optional technology unit
SK TU2-CTR
SK TU2-POT
Optional technology unit
Bus modules
Optional customer unit
SK CU1-...
Optional special extension
SK XU1-...
Close-to-motor version:
Optional technology unit
SK TU2-CTR
SK TU2-POT
Optional technology unit
Bus modules
Optional customer unit
SK CU1-...
Optional special extension
SK XU1-...
Fig.: SK 750E in IP54 version (air cooling)
2 Assembly and installation
2.1 Motor-integrated and close to motor layouts
With the motor-integrated version the SK 750E frequency inverter is directly mounted on the motor by means
of an attachment frame and "mounting feet", which integrate it into the drive unit.
With the SK 750E close-to-motor version, the frequency inverter can be mounted close to the motor, i.e. on a
wall or a machine frame for example. A wall-mounting kit is required for this (see Section 2.5).
BU 0750 GB-3311 Subject to technical amendments 13
NORDAC SK 750E Manual
100mm
100mm
2.2 Installation
NORDAC SK 750E frequency inverters are available in various sizes depending on their output. Attention must
be paid to a suitable position when installing.
The equipment requires sufficient ventilation to protect against overheating. For this the minimum guideline
distances from adjacent components above and below the frequency inverter, which could obstruct the air flow
apply. (above > 100 mm, below > 100 mm)
Mounting can be immediately next to each other. The installation position is normally vertical.
If several inverters are arranged above each other, it must be ensured that the upper air entry temperature limit
is not exceeded. (See also Section 9, Technical data). If this is the case, it is recommended that an "obstacle"
(e.g. a cable duct) is mounted between the inverters so that the direct air flow (rising warm air) is impeded.
Warm air must be vented above the device!
14 Subject to technical amendments BU 0750 GB-3311
Frequency inverter type
L B D
Wall mounting kit (optional, Section 2.5)
Weight
L1
B1
L2
SK 750E-551-323-A …
SK 750E-751-323-A
414
372 *
255
237.5
165 *
443
401*
220.5
457.5
415.5*
6.5
18.0
SK 750E-551-340-A …
SK 750E-152-340-A
SK 750E-921-323-A …
SK 750E-112-323-A
472
430*
305
253
179 *
501
459*
270.5
516
474*
6.5
23.0
SK 750E-182-340-A …
SK 750E-222-340-A
All dimensions in [mm]
Approx.
[kg]
*) water cooled version
L
B
D
2.3 Dimensions of the SK 750E
2 Assembly and installation
BU 0750 GB-3311 Subject to technical amendments 15
NORDAC SK 750E Manual
Type
for device
Part number
SK WMK-750E-Size 1
SK 750E-551-323-A (-W) ... SK 750E-751-323-A (-W)
SK 750E-551-340-A (-W) ... SK 750E-152-340-A (-W)
275219000
SK WMK-750E-Size 2
SK 750E-921-323-A ... SK 750E-112-323-A
SK 750E-182-340-A ... SK 750E-222-340-A
275219010
SK WMK-750E-Size 2-W
(in preparation)
SK 750E-921-323-A -W... SK 750E-112-323-A-W
SK 750E-182-340-A -W... SK 750E-222-340-A-W
275219020
(in preparation)
SK WMK-750E-Size 1
SK WMK-750E-Size 2
Components of the wall mounting kits:
Wall mounting kit:
SK WMK-750E-Size 1
2.4 Attachment accessories for the SK 750E
1. Wall mounting, SK WMK-750E Size 1 or. ...Size 2: For the close-to-motor version of the SK 750E
frequency inverter, attachment to a suitable mounting surface is by means of an optional mounting bracket.
2. Motor mounting: Alternatively, there is the possibility of direct mounting on NORD DS standard motors
(motor-integrated version). Additional mounting material is required for this.
2.5 SK 750E wall mounting kit
For use of the SK 750E frequency inverter close to the motor, the wall mounting kit enables the geared motor
and the frequency inverter to be installed separately. For wall mounting of the SK750E, 2 suitable brackets are
required, which can be ordered as accessories. These are screwed to the rear of the SK 750E with the
fastening material provided. Both of the wall mounting kits comply with protection classes IP54 or IP65. The
same wall mounting kit is required for Size 1 air cooled and water cooled versions. For Size 2, there are
differences in the wall mounting kits for the two versions.
16 Subject to technical amendments BU 0750 GB-3311
Note
Please refer to the table in Section 2.2 for the dimensions.
B1
B
L
L2
L1
Fig.: SK 750E with SK WMK-750E-Size 1
2.5.1 Dimensions of the SK 750E with wall mounting kit
2 Assembly and installation
BU 0750 GB-3311 Subject to technical amendments 17
NORDAC SK 750E Manual
Attachment frame
for device
Part number
Attachment frame 750E-Size 1-IEC132
SK 750E-551-323-A ... SK 750E-751-323-A
SK 750E-551-340-A ... SK 750E-751-340-A
275218000
Attachment frame 750E-Size 1-IEC160*
SK 750E-112-340-A ... SK 750E-152-340-A
275217000
Attachment frame 750E-Size 2-IEC160*
SK 750E-921-323-A ... SK 750E-112-323-A
SK 750E-182-340-A ... SK 750E-222-340-A
275216000
*Also suitable for motor size IEC132
Attachment frame 750E-Size 1-IEC132
Attachment frame 750E-Size 1-IEC160
Attachment frame 750E-Size 2-IEC160
Part number
Motor size
Number per drive unit
16630900
132
2
17481000 ("Foot")
160, 180MX, 180LX (Siemens)
2
17181010 (Screw set)
4
17430900
160 L, 160 LH, 160 MH, 180MX, 180LX (NORD)
2
17130900
160M (NORD)
2
2.6 Mounting of the SK750E directly on a motor
For motor-mounted (motor-integrated) use of the SK 750E frequency inverter direct installation of the geared
motor and the frequency inverter is possible using the attachment frame and the additional "motor mounting
feet". Three different attachment frames are available for mounting on the various sizes of motor (132, 160,
180MX/LX).
The number and version of the attachment feet to be used depends on the type of motor and can be obtained
from the following table.
Example: "Attachment feet" for size 132 motor, Part No. 16630900:
18 Subject to technical amendments BU 0750 GB-3311
2 Assembly and installation
NOTE
The control cables, line cables and motor cables must be laid separately. Under no circumstances
may they be laid in the same protective conduit or cable duct.
The test equipment for high voltage insulation must not be used for cable which are connected to
the frequency inverter.
2.7 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. To meet the limiting values of the EMC directives, the following
instructions should be complied with.
1) Ensure that all equipment in the control cabinet or field is securely earthed using short earthing cables
which have large cross-sections and 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 lead of the motor controlled by the frequency inverter must be connected as directly as
possible to the earth connection of the cooling element, together with the PE of the corresponding
frequency inverter mains supply. The presence of a central earthing bar in the control cabinet and the
grouping together of all bonding conductors to this bar normally ensures safe operation. (See also
Chapter 8.3/8.4 EMC guidelines)
3) Where possible, shielded cables should be used for control circuits. The shielding at the cable end
should be carefully sealed and it must be ensured that the wires are not laid over longer distances
without shielding.
The shields of analog setpoint cables should only be earthed on one side on the frequency inverter.
4) 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.
5) Ensure that the contactors in the cabinet are interference protected, either by RC circuits in the case
of AC contactors or by free-wheeling diodes for DC contactors, for which interference suppressors
must be connected to 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.
6) Shielded or protected cables should be used for load connections (motor cable) and the
shielding/protection should be earthed at both ends, if possible directly to the frequency inverter
PE/EMC terminal.
In addition, EMC-compliant wiring must be ensured. (see also Section 8.3/8.4 EMC). If required, an
optional integrated motor filter is available.
7) Select the lowest possible switching frequency. This will reduce the intensity of the electromagnetic
interference produced by the frequency inverter.
The safety regulations must be complied with under all circumstances when
installing the frequency inverter!
BU 0750 GB-3311 Subject to technical amendments 19
NORDAC SK 750E Manual
WARNING
NOTE
THESE DEVICES MUST BE EARTHED.
Safe operation of the devices requires that is installed and commissioned by qualified
personnel in compliance with the instructions provided in this Manual.
In particular, the general and regional installation and safety regulations for work on
high voltage systems (e.g. VDE) must be complied with as must the regulations
concerning correct use of tools and the use of personal protection equipment.
Dangerous voltages can be present at 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.
Make sure that the inverter and motor have the correct supply voltage set.
Switching of the motor or brake resistor cable in not permitted when they are
connected to a voltage.
PE
L1
L2
L3
PE L1 L2 L3
+B -B PE
U V W PE
T1 T2
M
3 ~
Mains connection
a) 3 ~ 220-240V ~
b) 3 ~ 380-440V ~
c) 3 ~ 460/480V ~
Brake resistor
connection
R = 10-40Ω
for further
details see
Section
9.2/9.3
3~ motor
connection
Star/Delta
Temperature
sensor
(PTC)
+Br -Br PE
Electro-
magnetic
brake coil
a) 105V =
b) 180V =
c) 205V =
2.8 Electrical Connection
2.9 Electrical connection of power unit
The line, motor, brake resistor and control connections are located on the underside of the device. To gain
access to the terminals, the device covers (cover and terminal cover) must be removed. The connection
terminals are now accessible from the front or from above. The cables must be fed into the frequency inverter
via suitable screw fittings and pretected from tension. All covers must be put back in place before switching on
the supply voltage!
20 Subject to technical amendments BU 0750 GB-3311
2 Assembly and installation
ATTENTION
Proper earthing must be ensured for
all metal covers. Otherwise the
frequency inverter must not be put
into operation (see illustration).
NOTE
If using certain wire end sleeves are used, the maximum cross-section which can be connected can
be reduced.
NOTE
If synchronous machines are connected or several motors are connected in parallel, the
frequency inverter must be operated with linear voltage/frequency characteristic curves,
P211 = 0 and P212 = 0.
Before connecting the device, the following must be observed:
1. Ensure that the voltage source provides the correct voltage and is suitable for the current required (see
Section 9 Technical data). In addition, care must be taken that suitable power switch with the specified
rated current range is installed between the voltage source and the frequency inverter.
2. Connect the mains voltage directly to the mains terminals L1 - L2 - L3 and connect the earth (PE).
3. A four-core cable must be used to connect the motor. The cable must be connected to the motor terminals
U - V - W and the PE.
4. If shielded motor cables are used (recommended), the cable shielding must also be connected to a large
area of the metal screw fittings.
Note: The use of shielded cables is essential in order to maintain the specified radio interference
suppression level. (See also Section 10.5 EMC limit value classes)
Usually, the line, motor and brake resistor cables are
connected first as their terminals are located on the
bottom circuit board. The various metric screw
fittings on the underside of the device are used as
cable glands (see 2.9.7 Cable Glands)
BU 0750 GB-3311 Subject to technical amendments 21
NORDAC SK 750E Manual
Mains input voltage (AC)
Brake coil voltage (DC)
400V ~
180V =
460V ~ ... 480V ~
205V =
230V ~
105V =
2.9.1 Mains supply (PE, L1, L2, L3)
No special safety devices are required on the mains input side for the frequency
inverter, the use of the normal mains protection (see 9 Technical Data) and a
master switch or contactor is recommended.
Note: Use of this frequency inverter on an IT network is possible after minor
modifications. Please consult your supplier.
2.9.2 Electromagnetic brake (+Br, -Br, PE)
An output voltage is generated by the frequency inverter at the terminals
-Br/+Br to actuate an electromechanical motor brake (see Section 2.9,
Electrical connections to the power unit).
This depends on the supply voltage present in the frequency inverter. The
assignment is as follows:
Note: The allocation of the correct brake or brake coil voltage must be
taken into account in the design with reference to the mains
voltage of the frequency inverter.
2.9.3 Brake resistor (+B, -B, PE)
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 connection of an external braking resistor.
The connection for the frequency inverter → brake resistor should be
shielded and as short as possible.
Switching of this connection must only be made when no voltage is present!
Note: The possible generation of large amounts of heat in the braking
resistor must be taken into account.
2.9.4 Motor cable (U, V, W, PE)
The motor cable maximum length of 150m (Please note also Section 10.5 EMC
limit value classes). If a shielded motor cable is used, or the metallic cable duct is
well earthed, the maximum length of 50m should not be exceeded. For longer
cable lengths, the frequency inverter can be equipped with an optional internal
motor filter (at extra charge).
Switching (contactor or motor protection switch) at the output (U, V, W), is not
permitted while the frequency inverter is delivering current!
Note: For multiple motor operation the total cable length consists of the sum
of the individual cable lengths. If the sum of the cable lengths is too
large, an optional internal motor filter should also be ordered.
22 Subject to technical amendments BU 0750 GB-3311
2 Assembly and installation
NOTE
The cable routing of the control cables or temperature sensor should always be separate from the
motor cable and be made with shielded cables.
Internal switching in the inverter prevents excessive voltage to the thermistor. Further details can be
found in Section 8, Error messages.
Size 1:
SK 750E-551-323-A ... SK 750E-751-323-A (5.5 / 7.5kW, 230V)
SK 750E-551-340-A ... SK 750E-152-340-A (5.5 … 15kW, 400V)
Terminal block
Mains input
Mech. Brake
Brake resistor
Motor output
Temp. Sensor
VDE rigid
0.5 - 16mm²
0.2 - 6mm2
0.2 - 6mm²
0.5 - 16mm²
0.14 - 2.5mm²
VDE flexible
0.5 - 10mm²
0.2 - 4mm2
0.2 - 4mm²
0.5 - 10mm²
0.14 - 2.5mm²
UL/cUL
AWG 20-6
AWG 24-10
AWG 24-10
AWG 20-6
AWG 26-14
Size 2:
SK 750E-921-323-A ... SK 750E-112-323-A (9.2 / 11kW, 230V)
SK 750E-182-340-A ... SK 750E-222-340-A (18.5 / 22kW, 400V)
Terminal block
Mains input
Mech. Brake
Brake resistor
Motor output
Temp. Sensor
VDE rigid
0.5 - 35mm²
0.2 - 6mm2
0.5 - 16mm²
0.5 - 35mm²
0.14 - 2.5mm²
VDE flexible
0.5 - 25mm²
0.2 - 4mm2
0.5 - 10mm²
0.5 - 25mm²
0.14 - 2.5mm²
UL/cUL
AWG 20-2
AWG 24-10
AWG 20-6
AWG 20-2
AWG 26-14
2.9.5 Temperature sensor (T1, T2)
This input can be used to evaluate a temperature sensor (thermistor or temperaturecontrolled switch) in order to prevent overheating.
If the thermistor has a high resistance or the temperature controlled switch opens, the
frequency inverter switches off and reports a motor overtemperature error (E001).
If no temperature sensor is used, terminals T1 and T2 must be bridged.
An error message can be acknowledged by switching the mains off and on again, or by
pressing the ENTER key on a control display (ControlBox or ParameterBox).
Evaluation of a temperature sensor is also possible by means of the optional customer units (SK CU1-...).
Further details can be found in Section 3.3, Overview of customer units.
2.9.6 PowerConnection Terminals
BU 0750 GB-3311 Subject to technical amendments 23
NORDAC SK 750E Manual
NOTE
All control voltages refer to a common reference potential 0V / GND.
If necessary, 5 / 15V can be taken from several terminals. The sum the currents must not exceed
300mA.
2.9.7 Control connections (optional)
The manner and type of control unit connections are dependent on the options chosen (customer unit / special
extension unit). The possible variants are described in Section 3.3/3.4.
Here you will find general data and information on all customer units and special extension units.
Connection terminals: - Plug-in clip connectors can be released with a small screwdriver
Maximum
connection cross-section: - 1.5mm2 or 1.0mm2 (AWG 26-14 or 26-16), according to option
Cable: - laid separately from the mains/motor cables and shielded
Control voltages: - 5V, max. 300mA, for the supply of a ParameterBox SK PAR-2H
(Short-circuit proof) - 10V, max. 10mA, reference voltage for an external potentiometer
- 15V, max. 300mA, for the supply of digital inputs or an incremental or
absolute encoder
- analog output 0 - 10V, max. 5mA for an external display unit
24 Subject to technical amendments BU 0750 GB-3311
2 Assembly and installation
Line input
Brake resistor
Motor output
RS485 interface
→ SK PAR-2H connection
Temperature sensor
Control level
Fig.: Air cooled SK 750E, Size 1
Mech. Brake
Size
Line input
Motor output
Control level
Brake resistor
Temperature
sensor
Size 1
M32
M25
3x M25
2x M16
2x M12
Size 2
M40
M32
3x M25
2x M16
2x M12
NOTE
For operation with an SK 750E, the motor should be equipped with a temperature sensor.
2.9.8 Cable connections
With the cable connections, a differentiation must be made between Size 1 and Size 2 of the SK 750E
frequency inverter. Both have different cable connections for the line input and the output from the frequency
inverter to the motor (see the table below). The cable connections for the control level, control of the brake
resistor and the temperature sensor input are the same for both sizes.
Available cable connections for Size 1 and 2:
BU 0750 GB-3311 Subject to technical amendments 25
NORDAC SK 750E Manual
WARNING
Modules must not be inserted or removed unless the device is free of voltage. The slots must only
be used for the intended modules.
Installation of a technology unit separate from the frequency inverter is not possible. It must be connected
directly to the frequency inverter.
NOTE
3 Options
3.1 Modular options
By combining various modules for display, control and parameterisation, the NORDAC SK 750E can be easily
adapted to various requirements.
Modules are available for processing analog and digital signals and for all common Bus systems.
Alphanumerical display and operating modules can be used for simple commissioning. For more complex
tasks, various connections to a PC or an automation system can be selected.
Technology units (Technology Unit, SK TU2-...) are located on the frequency inverter and are accessible
from the outside for manual control or parameterisation, or to provide connection to field bus systems.
Customer interfaces (Customer Unit, SK CU1-...) are installed inside the frequency inverter. These allow
control with analog and digital signals or connection to the bus systems.
Special extension units (Extension Unit, SK XU1-...) include special functions such as speed control with
incremental encoders or position control with incremental or absolute encoders.
Further detailed information can be found in the Options manuals.
- www.nord.com –
26 Subject to technical amendments BU 0750 GB-3311
3.2 Overview of Technology Units
ATTENTION
Left / right TU slot
When inserting the technology units, the left and right slots must be considered separately. The
left hand slot must only be used for the ControlBox or PotentiometerBox control unit. The right
hand slot can be used for all modules. Combined operation of the PotentiometerBox and the
ControlBox is not possible!
ATTENTION
The technology units SK TU2-… are available for protection class IP55 and technology units
SK TU2-…-C for IP66. It must be noted that the functionality and dimensions of the technology
units are identical for the IP55 and IP66 versions. However, with the IP66 version special
measures, such as coated PCBs are used in order to comply with the protection class.
Technology unit
SK TU2-...
Protection
class
Description
Data
ControlBox
SK TU2-CTR
Part. No. 275130130
IP55
Used for commissioning,
parameterisation, configuration
and control of the frequency
inverter.
4-digit, 7-segment LED display,
keyboard
ControlBox
SK TU2-CTR-C
Part. No. 275170130
IP66
PotentiometerBox
SK TU2-POT
Part. No. 275130060
IP55
For direct control of the
frequency inverter without
additional installation or setting
1 potentiometer 0...100 %
1 switch left-0-right
PotentiometerBox
SK TU2-POT-C
Part. No. 275170060
IP66
Profibus module (standard)
SK TU2-PBR
Part. No. 275130070
IP55
This interface enables control of
the NORDAC SK 750E via the
Profibus DP serial port.
Profibus interface
Baud rate: 1.5 MBit/s
2x 5 pin M12 system connectors
Profibus module (standard)
SK TU2-PBR-C
Part. No. 275170070
IP66
Profibus module (terminals)
SK TU2-PBR-KL
Part. No. 275130065
IP55
This interface enables control of
the NORDAC SK 750E via the
Profibus DP serial port.
Profibus interface
Baud rate: 1.5 MBit/s
8 pin terminal
Profibus module (terminals)
SK TU2-PBR-KL-C
Part. No. 275170065
IP66
3.2 Overview of Technology Units
Technology units are optional modules and are plugged onto the top of the frequency inverter. They are for the
control or parameterisation of the inverter and for the display of the actual operating values. The
PotentiometerBox and the ControlBox are available as technology units for simple control of the frequency
inverter and various bus modules are available for connection to a higher level control unit.
A differentiation is made between IP55 and IP66 technology units. Technology units with protection class
IP555 are used for the air cooled SK 750E and protection class IP66 is used for the water cooled SK 750E.
BU 0750 GB-3311 Subject to technical amendments 27
NORDAC SK 750E Manual
Technology unit
SK TU2-...
Protection
class
Description
Data
Profibus module (ext. 24V)
SK TU2-PBR-24V
Part. No. 275130110
IP55
This interface enables control of
the NORDAC SK 750E via the
Profibus DP serial port.
Profibus interface
Baud rate: 12 MBit/s
2x 5 pin M12 system connectors
1 external 24 V power supply
Profibus module (ext. 24V)
SK TU2-PBR-24V-C
Part. No. 275170110
IP66
InterBus module
SK TU2-IBS
Part. No. 275130080
IP55
This interface enables control of
the NORDAC SK 750E via the
serial InterBus port.
InterBus interface
Baud rate: 500 KBit/s
2x 5 pin M12 system connectors
InterBus module
SK TU2-IBS-C
Part. No. 275170080
IP66
DeviceNet module
SK TU2-DEV
Part. No. 275130090
IP55
This option enables control of
the NORDAC SK 700E via the
DeviceNet serial port using the
DeviceNet protocol.
DeviceNet interface
Baud rate: 500 KBit/s
1x 5 pin M12 system connector
DeviceNet module
SK TU2-DEV-C
Part. No. 275170090
IP66
CANopen module
SK TU2-CAO
Part. No. 275130100
IP55
This option enables control of
the NORDAC SK 750E via the
CANbus serial port using the
CANopen protocol.
CANopen interface
Baud rate: up to 1 MBit/s
2x 5 pin M12 system connectors
CANopen module
SK TU2-CAO-C
Part. No. 275170100
IP66
AS interface module
SK TU2-AS1
Part. No. 275130120
IP55
This interface enables the
control of sensors and
actuators. In addition, the NORD
SK 750E can be parameterised
via the AS interface
AS interface
2 x 2 M12 5 pin sockets /
connectors
AS interface module
SK TU2-AS1-C
Part. No. 275170120
IP66
Control units
Bus modules
28 Subject to technical amendments BU 0750 GB-3311
WARNING
Modules must not be inserted or removed unless the device is free of voltage. The slots must only
be used for the intended modules.
Installation of a technology unit separate from the frequency inverter is not possible. It must be connected
directly to the frequency inverter.
NOTE
ATTENTION
Operation is not permitted if there is no secure
PE connection to the frequency inverter and to
the technology unit (see adjacent illustration)!
3.2.1 Installing the Technology Unit
Installation of the technology units must be carried out as
follows:
1. Switch off the mains voltage, observe the waiting
period.
2. Remove the blank cover by removing the 6 screws
and the PE cable.
3. Connect the technology unit to the PE cable and
push it in using slight pressure. Take care that the
connector strip makes proper contact.
4. Tighten the 6 fastening screws.
3.2 Overview of Technology Units
BU 0750 GB-3311 Subject to technical amendments 29
NORDAC SK 750E Manual
NOTE
The digital frequency setpoint is factory set to 0Hz. To check whether the drive is working, a
frequency setpoint must be entered with the key or a jog frequency must be entered via the
relevant parameter >Jog frequency< (P113).
Settings should only be implemented by qualified personnel, strictly in accordance with the
warning and safety information.
ATTENTION:The drive may start immediately after pressing the START key !
3.2.2 ControlBox SK TU2-CTR
(SK TU2-CTR, Part No.: 275130130)
(SK TU2-CTR-C, Part No.: 275170130)
This option is used as a simple parameterisation, display and control tool for the
frequency inverter SK 750E.
Features:
4-digit, 7-segment LED display
Direct control of a frequency inverter
Display of the active parameter set and operating values
After mounting the ControlBox and switching on the mains supply, horizontal dashes are displayed in the
4-digit, 7 segment display. This display signals the operational readiness of the frequency inverter.
If a jog frequency is preset in parameter P113, the display alternates between 0.0Hz and the value in P113.
If the frequency inverter is enabled, the display changes automatically to the operating value selected in
parameter >Selection Display value< P001(factory setting = actual frequency).
The actual parameter set is shown by the 2 LEDs next to the display on the left in binary code.
30 Subject to technical amendments BU 0750 GB-3311
Loading...