nord NORDAC SK 700E User manual

MANUAL
NORDAC SK 700E
Frequency inverter
SK 700E-151-340-A ... SK 700E-163-340-O-VT
(1.5kW … 160kW, 3~ 380-480V)
BU 0700 EN
SK 700E with option: Parameterbox
Getriebebau NORD
GmbH & Co. KG

NORDAC SK 700E Operating Manual
2 BU 0700 EN
NORDAC SK 700E frequency inverter
Safety and operating instructions
for the drive power converter
(as per: Low voltage guideline 73/23/EEC )
1. General information
During operation, drive power converters 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
Drive power converters 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 drive power converters 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 drive power
converter.
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.
4. Installation
The installation and cooling of the equipment must be
implemented as per the regulations in the corresponding
documentation.
The drive power converters 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.
Drive power converters 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 connections
When working on drive power converters 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 drive power converter documentation. These instructions
must also always be observed for drive converters with 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 drive power converters 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 drive power
converter using the operating software are permitted.
After the drive power converter 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 drive power converter.
All covers must be kept closed during operation.
7. Maintenance and repairs
The manufacturer documentation must be complied with.
These safety instructions must be kept in a safe place!

Table of contents
BU 0700 EN 3
1 GENERAL INFORMATION .............................................. 4
1.1 Overview ..................................................................4
1.2 Delivery ....................................................................5
1.3 Scope of supply ........................................................5
1.4 Safety and installation information............................6
1.5 Certifications.............................................................7
1.5.1 European EMC guideline .....................................7
1.5.2 UL and cUL certification.......................................7
2 ASSEMBLY AND INSTALLATION.................................. 8
2.1 Installation ................................................................8
2.2 Dimensions of the frequency inverter .......................9
2.3 UB line filter up to 22kW (accessory)......................10
2.4 Chassis line filter (accessory) .................................11
2.5 Line choke (accessories)........................................12
2.6 Output choke (accessories)....................................13
2.7 UB brake resistors (accessory)...............................14
2.7.1 Electrical data UB BR ........................................14
2.7.2 Dimensions UB BR ............................................14
2.8 Chassis brake resistors (accessory).......................15
2.8.1 Electrical data Chassis BR.................................15
2.8.2 Dimensions Chassis BR ....................................15
2.9 Wiring guidelines ....................................................16
2.10 Electrical connections...........................................17
2.10.1 Line and motor connections.............................17
2.10.2 Mains connection up to 22kW (PE/L1/L2/L3)...18
2.10.3 Mains connection from 30kW (PE/L1/L2/L3)....18
2.10.4 Motor cable (U/V/W/PE)...................................19
2.10.5 Brake chopper connection
up to 22kW (+B/-B)..........................................19
2.10.6 Brake resistor connection
from 30kW (BR+ZW) .......................................19
2.10.7 Control unit connection ....................................20
3 OPERATION AND DISPLAY .......................................... 21
3.1 Technology unit ......................................................22
3.1.1 ParameterBox....................................................23
3.1.2 ControlBox .........................................................33
3.1.3 PotentiometerBox ..............................................37
3.1.4 RS 232 Box (SK TU1-RS2)................................38
3.1.5 CANbus module (SK TU1-CAN) ........................38
3.1.6 Profibus module (SK TU1-PBR) ........................38
3.1.7 Profibus 24V module (SK TU1-PBR-24V)..........39
3.1.8 CANopen module (SK TU1-CAO)......................39
3.1.9 DeviceNet module (SK TU1-DEV) .....................39
3.1.10 InterBus module (SK TU1-IBS) ........................40
3.1.11 AS interface (SK TU1-AS1) .............................40
3.2 Customer units .......................................................41
3.2.1 Basic I/O ............................................................45
3.2.2 Standard I/O ......................................................46
3.2.3 Multi I/O .............................................................47
3.2.4 Multi I/O 20mA ...................................................48
3.2.5 BUS customer units ...........................................49
3.3 Special extension units...........................................50
3.3.1 PosiCon I/O .......................................................54
3.3.2 Encoder I/O .......................................................55
3.4 Customer I/Os terminals.........................................56
3.5 Colour and contact assignments for the encoder ...57
4 COMMISSIONING ...........................................................58
4.1 Basic settings .........................................................58
4.2 Basic operation - Quick start guide.........................59
4.3 Minimum configuration of control connections........60
5 PARAMETERISATION ....................................................61
5.1 Parameter description ............................................63
5.1.1 Operating displays .............................................63
5.1.2 Basic parameters...............................................64
5.1.3 Motor data / characteristic curve parameters.....69
5.1.4 Control parameters ............................................72
5.1.5 Control terminals................................................75
5.1.6 Extra functions...................................................87
5.1.7 Positioning .........................................................96
5.1.8 Information.........................................................96
5.2 Parameter overview, User settings.......................101
6 ERROR MESSAGES.....................................................107
6.1 ControlBox displays (option).................................107
6.2 ParameterBox displays (option) ...........................107
7 TECHNICAL DATA........................................................112
7.1 General Data ........................................................112
7.2 Continuous thermal output ...................................113
7.3 Electrical data.......................................................113
7.4 Electrical data for UL/cUL certification..................115
8 ADDITIONAL INFORMATION......................................116
8.1 Setpoint processing in the SK 700E .....................116
8.2 Process controller.................................................118
8.2.1 Process controller application example ...........118
8.2.2 Process controller parameter settings .............119
8.3 Electromagnetic compatibility (EMC)....................120
8.4 EMC limit value classes........................................120
8.5 Maintenance and servicing information ................122
8.6 Additional information...........................................122
8.7 RS 232 PC interface on RJ12 socket ...................122
8.7.1 SK 700E up to 22kW .......................................123
8.7.2 SK 700E from 30kW ........................................123
9 KEYWORD INDEX ........................................................124
10 REPRESENTATIVES / BRANCHES..........................126

NORDAC SK 700E Operating Manual
4 Subject to technical alterations BU 0700 EN
1 General information
The series NORDAC SK 700E is the follow-on development of the proven vector series. These devices are characterised by
the high modularity and excellent control characteristics.
These devices are provided with non-sensor vector current control system which constantly ensures an optimised voltage-to-
frequency ratio in combination with a motor model of an three-phase asynchronous motor. 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.
Devices for constant load:
Due to the numerous setting options, these inverters are capable of controlling all three-phase motors. The performance range
goes from 1.5kW to 22kW (3~ 380V...480V) with an integrated line filter and from 30kW to 132kW (3~ 380V...480V) with
optional external line filter. The overload capacity of these devices is 200% for 3.5 seconds and 150% for 60 seconds.
Device for quadratically increasing loads SK 700E-163-340-O-VT:
In the performance range 160kW (3~ 380V...480V) a variant for quadratically increasing load is available. This load profile is
typical for fans and various pump applications. In contrast to the devices used for constant load torque, the overload capacity
here is limited to 125%.
NOTE:The SK 700E with the performance range 30kW to 160kW varies in some technical details from the lower
performance devices. Details can be found in this manual.
This manual is based on the device software V3.3 Rev0 (P707) for the SK 700E. 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:
•Heavy 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 (please refer to technical data)
•Integrated line filter for limit curve A as per EN 55011 (up to and including 22kW)
•Automatic measurement of the stator resistance
•Programmable direct current braking
•Integrated brake chopper for 4 quadrant drive
•Four separate online switchable parameter sets
The characteristics of the basic equipment with an additional technology unit, customer unit or special extension unit are
described in Chapter 3, 'Operation and displays'.

1. General information
BU 0700 EN Subject to technical alterations 5
Additional BUS manuals
are available..
> www.nord.com <
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.
1.3 Scope of supply
Standard design: Mounting unit IP 20
Integrated brake chopper
Integrated line filter for limit curve A as per EN 55011 (up to and including 22kW)
Blanking cover for technology unit slot
Shield angle
Operating manual
Available accessories: Brake resistor, IP 20 (Chapter 2.7/2.8)
Line filter for limit curve A or B as per EN 55011, IP 20 (Chapter 2.3/2.4)
Line and output choke, IP 00 (Chapter 2.5/2.6)
Interface converter RS 232 →RS 485 (supplemental description BU 0010)
NORD CON, PC parameterising software
p-box (ParameterBox), external control panel with LCD plain text display, connection cable
(supplemental description BU 0040 DE)
Technology unit: ControlBox, detachable control panel, 4-figure 7-segment LED display
ParameterBox, detachable control panel with background illuminated LCD plain text display
RS 232, accessory component for RS 232 interface
CANbus, accessory component for CANbus communication
Profibus, accessory component for Profibus DP
CANopen, Bus switch-on
DeviceNet, Bus switch-on
InterBus, Bus switch-on
AS interface
Customer units: Basic I/O, limited scope for signal processing
Standard I/O, moderate scope for signal processing and RS 485
Multi I/O, high scope for signal processing
CAN I/O, Bus switch-on via CANbus
Profibus I/O, Bus switch-on via Profibus DP
Special extension units: PosiCon I/O, positioning component (supplemental description BU 0710 DE)
Encoder I/O, incremental encoder input for speed control

NORDAC SK 700E Operating Manual
6 Subject to technical alterations BU 0700 EN
1.4 Safety and installation information
NORDAC SK 700E 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 other work may only be carried out by qualified electricians and when the device is
disconnected. The manual must always be available for these persons and must be complied with.
•Local regulations for the installation of electrical equipment as well as for 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.
•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 galvanic isolation from the mains.
•Attention, 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.
•Warning, under certain settings the frequency inverter can start 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 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 cross-section of at least 10 mm2.
•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 standard FI circuit breaker
must comply with the new design as per VDE 0664.
•The inverter must be mounted in a switch cabinet that is suitable for its immediate surroundings. In particular it
must be protected from excess humidity, corrosive gases and dirt.
•In normal use, NORDAC SK 700E frequency inverters are maintenance free. The cooling surfaces must be
regularly cleaned with compressed air if the ambient air is dusty.
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!

1. General information
BU 0700 EN Subject to technical alterations 7
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. 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!
Warning: This product is covered under marketing classification IEC 61800-3. In a domestic environment, this product can
cause high frequency interference, which may require the user to take appropriate measures.
An appropriate measure would be the inclusion of a recommended line filter.
1.5 Certifications
1.5.1 European EMC guideline
If the NORDAC SK 700E 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].)
1.5.2 UL and cUL certification
(Used in North America)
“Suitable for use on a circuit capable of delivering not more than 5000 rms symmetrical
amperes, 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),
380...460 Volts (three phase) and when protected by "J class fuses" as described in
Chap. 7.4.
NORDAC SK 700E frequency inverters have motor overload protection.
Further technical details can be found in Chapter 7.4.

NORDAC SK 700E Operating Manual
8 Subject to technical alterations BU 0700 EN
2 Assembly and installation
2.1 Installation
NORDAC SK 700E frequency inverters are available in various sizes depending on the output. When installed in a control
cabinet, the size, power dissipation and perm. ambient temperature must be taken into account to prevent device failures.
The equipment requires sufficient ventilation to protect against overheating. Reference values apply here for the spaces above
and below the frequency inverter within the control cabinet.
(up to and inc. 22kW, above > 100mm, below > 100mm and from and inc. 30kW above > 200mm, below > 200mm)
Electrical components (e.g. cable ducts, contactors, etc.) can be located within these limits. There is a height-dependent
minimum separation distance from the frequency inverter for these components. This distance must be a minimum 2/3 of the
object height. (Example: cable duct 60mm high Æ2/3⋅60mm = 40mm gap)
Additional side gaps for devices up to and inc. 55kW are not required. Mounting can be immediately next to each other. The
installation position is normally vertical. It must be ensured that the cooling ribs on the rear of the device are covered with a flat
surface to provide good convection.
Warm air must be vented above the device!
If several inverters are arranged above each other, ensure that the upper air entry temperature limit is not exceeded. (See also
Chapter 7, 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.
700E
N O R D A C
R
700E
N O R D A C
vector
R
700E
N O R D A C
R
700E
N O R D A C
vector
R
700E
N O R D A C
R
700E
N O R D A C
vector
R
>100/200 mm
>100/200 mm

2 Assembly and installation
BU 0700 EN Subject to technical alterations 9
2.2 Dimensions of the frequency inverter
Device type Length
L1
Width
B1
Installation
depth
T
Detail: mounting Weight
approx.
Length L2 Width B2 Length L3 ∅
SK 700E-151-340-A …
SK 700E-401-340-A 281 123 219 269 100 223 5.5 4 kg
SK 700E-551-340-A
SK 700E-751-340-A 331 123 219 319 100 273 5.5 5 kg
SK 700E-112-340-A
SK 700E-152-340-A 386 167 255 373 140 315 5.5 9 kg
SK 700E-182-340-A
SK 700E-222-340-A 431 201 268 418 172 354 6.5 12.5 kg
SK 700E-302-340-O
SK 700E-372-340-O 599 263 263 582 210 556 6.5 24kg
SK 700E-452-340-O
SK 700E-552-340-O 599 263 263 582 210 556 6.5 28kg
SK 700E-752-340-O …
SK 700E-902-340-O 736 263 336 719 210 693 6.5 45kg
SK 700E-113-340-O ...
SK 700E-163-340-O 1207 354 263 1190 142 * 1156 6.5 115kg
All dimensions in mm
700E
N O R D A C
R
700E
N O R D A C
vector
R
L1
L2
L3
B1
B2
8 mm
∅
B2 * B2 *
110-160kW only
110-160kW only

NORDAC SK 700E Operating Manual
10 Subject to technical alterations BU 0700 EN
2.3 UB line filter up to 22kW (accessory)
An additional external line filter can be installed into the line supply of the frequency inverter to maintain the increased noise
suppression level (class B as per EN 55011).
When connecting the line filter, comply with Chapter 2.9 "Wiring guidelines" and 8.3 "EMC". In particular, ensure that the pulse
frequency is set to the default value (P504 = 4/6kHz) and that the maximum motor cable length (30m) is not exceeded and a
shielded motor cable is used.
Mains connection is by means of screw connections at the lower end of the filter. Inverter connection is by means of a fixed
cable of a suitable length (250-300mm).
The filter should be located as close as possible to the inverter; it can be used as a substructure or Book Size component.
Inverter type Filter type Length
L1
Width
B1
Depth
T
Detail: mounting Connection
cross-section
Length L2 Width B2
SK 700E-151-340-A …
SK 700E-401-340-A SK LF1-460/14-F 281 121 48 269 100 4
SK 700E-551-340-A
SK 700E-751-340-A SK LF1-460/24-F 331 121 58 319 100 4
SK 700E-112-340-A
SK 700E-152-340-A SK LF1-460/45-F 386 165 73 373 140 10
SK 700E-182-340-A
SK 700E-222-340-A SK LF1-460/66-F 431 201 83 418 172 16
All dimensions in mm mm2
L1L2L3PE

2 Assembly and installation
BU 0700 EN Subject to technical alterations 11
2.4 Chassis line filter (accessory)
In contrast to the line filter described in Chapter 2.3, the HLD 110 (up
to 110kW) has a UL acceptance for the North American market.
The interference noise suppression level of class A is achieved with
up to a maximum motor cable length of 50m, and class B with motor
cables of up to 25m.
When connecting the line filter, comply with Chapter 2.9 "Wiring
guidelines" and 8.3 "EMC". In particular, ensure that the pulse
frequency is set to the default value (P504 = 4/6kHz). The line filter
should be placed as close to the side of the inverter as possible.
The connection is by means of screw connections on the upper
(mains) and lower (inverter) ends of the filter
Inverter type
SK 700E ...
Filter type
HLD 110 - ... [V] / [A]
Length
L1
Width
B1
Depth
T
Detail: mounting Connection
cross-section
Length L2 Width B2
...-151-340-A
...-221-340-A … 500/8 190 45 75 180 20 4 mm2
...-301-340-A
...-401-340-A
...-551-340-A
… 500/16 250 45 75 240 20 4 mm2
...-751-340-A
...-112-340-A … 500/30 270 55 95 255 30 10 mm2
...-152-340-A … 500/42 310 55 95 295 30 10 mm2
...-182-340-A … 500/55 250 85 95 235 60 16 mm2
...-222-340-A
...-302-340-O … 500/75 270 85 135 255 60 35 mm2
...-372-340-O … 500/100
270 95 150 255 65 50 mm2
...-452-340-O
...-552-340-O … 500/130
...-752-340-O … 500/180 380 130 181 365 102 95 mm2
...-902-340-O
...-113-340-O … 500/250 450 155 220 435 125 150 mm2
Design variant, without UL, only noise suppression level A
Bus bar
...-133-340-O HFD 103-500/300 *
564 300 160 2 x 210 275
∅8.5mm
...-163-340-O HFD 103-500/400 * ∅10.5mm
*) without UL/cUL All dimensions in mm
L1L2L3
L3'
L2'
L1'
L2 L1
B2
T
Netz / LINE
Gerät / LOAD
B1

NORDAC SK 700E Operating Manual
12 Subject to technical alterations BU 0700 EN
2.5 Line choke (accessories)
To reduce input side current harmonics, additional inductivity
can be installed into the line supply to the inverter.
These chokes are specified for a maximum supply voltage of
480V at 50/60 Hz.
The protection class of the chokes is IP00 and they must
therefore be installed in a control cabinet.
For frequency inverters with an output of 45 kW or more, a
line choke is recommended where several devices are being
used, in order to avoid possible adverse effects of one device
on another. In addition, the charging currents (mains voltage
fluctuations) are significantly reduced.
Inverter type
NORDAC
SK 700E
Input choke 3 x 380 - 480 V
Length
L1
Width
B1
Depth
T
Detail: mounting
Connection
Type Permanent
current Inductance Length
L2
Width
B2
Mounting
1.5 ... 2.2 kW SK CI1-460/6-C 6 A 3 x 4.88 mH 71 125 140 55 100 M4 4
3.0 ... 4.0 kW SK CI1-460/11-C 11 A 3 x 2.93 mH 84 155 160 56.5 130 M6 4
5.5 ... 7.5 kW SK CI1-460/20-C 20 A 3 x 1.47 mH 98 190 191 57.5 170 M6 10
11 ... 18.5 kW SK CI1-460/40-C 40 A 3 x 0.73 mH 118 190 191 77.5 170 M6 10
22 ... 30 kW SK CI1-460/70-C 70 A 3 x 0.47 mH 124 230 290 98 180 M6 35
37 ... 45 kW SK CI1-460/100-C 100 A 3 x 0.29 mH 148 230 290 122 180 M6 50
55 ... 75 kW SK CI1-460/160-C 160 A 3 x 0.18 mH 170 299 360 105 237 M8 95
90 ... 132 kW SK CI1-460/280-C 280 A 3 x 0.10 mH 190 290 270 133 240 M10 150
160 kW SK CI1-460/350-C 350 A 3 x 0.084 mH 190 300 270 107 224 M8 CU Bar
All dimensions in [mm] [mm2]
T
B2
B1 L1
L2
1 3 42 5 6

2 Assembly and installation
BU 0700 EN Subject to technical alterations 13
2.6 Output choke (accessories)
To reduce interference signals from the motor cable or to
compensate for cable capacitance in long motor cables, an
additional output choke can be installed into the inverter
output.
Take care during installation that the pulse frequency of the
frequency inverter is set to 3-6kHz (P504 = 3-6).
These chokes are specified for a maximum supply voltage of
460V at 0-100 Hz.
An output choke should be fitted for cable lengths over
150m/50m (unshielded/shielded). Further details can be found
in Chapter 2.10.4 "Motor cable".
The protection class of the chokes is IP00 and they must
therefore be installed in a control cabinet.
Inverter type
NORDAC
SK 700E
Output choke 3 x 380 - 460V
Length
L1
Width
B1
Depth
T
Detail: mounting
Connection
Type Permanent
current Inductance Length
L2
Width
B2
Mounting
1.5 kW SK CO1-460/4-C 4 A 3 x 3.5 mH 104 125 140 75 84 M6 4
2.2 ... 4.0 kW SK CO1-460/9-C 9.5 A 3 x 2.5 mH 105 155 160 71.5 130 M6 4
5.5 ... 7.5 kW SK CO1-460/17-C 17 A 3 x 1.2 mH 97 190 180 96 170 M6 10
11 ... 15 kW SK CO1-460/33-C 33 A 3 x 0.6 mH 107 190 180 126 170 M6 10
18 ... 30 kW SK CO1-460/60-C 60 A 3 x 0.33 mH 140 230 290 95 176 M6 35
37 ... 45 kW SK CO1-460/90-C 90 A 3 x 0.22 mH 140 300 315 94 224 M8 35
55 ... 90 kW SK CO1-460/170-C 170 A 3 x 0.13 mH 185 360 452 145 120 M10 95
110 … 132 kW SK CO1-460/240-C 240 A 3 x 0.07 mH 215 360 472 175 120 M10 150
160 kW SK CO1-460/330-C 330 A 3 x 0.03 mH 200 300 270 145 240 M8 CU bar
bolts
All dimensions in [mm] [mm2]
T
B2
B1 L1
L2
1 3 42 5 6

NORDAC SK 700E Operating Manual
14 Subject to technical alterations BU 0700 EN
2.7 UB brake resistors (accessory)
During dynamic braking (frequency reduction) of a three phase motor, electrical energy is returned to the frequency inverter. In
order to avoid overcurrent cut-off of the frequency inverter, the integrated brake chopper can convert the returned energy into
heat by connecting an external brake resistor.
For inverter outputs up to 7.5 kW, a standard substructure resistor can be fitted;
it can also be optionally equipped with a heat monitor for additional
thermal protection of the resistor.
This design is no longer possible with higher frequency
inverter outputs. Instead, the chassis brake
resistors (Chapter 2.8) can be used.
2.7.1 Electrical data UB BR
Inverter type Resistor type Resistance Continuous
output (approx.)
*) Pulse output
(approx.)
Connection
leads, 500mm
SK 700E-151-340-A …
SK 700E-301-340-A SK BR1-200/300-F 200 Ω300 W 3 kW 2 x 0.75 mm2
SK 700E-401-340-A SK BR1-100/400-F 100 Ω400 W 4 kW 2 x 0.75 mm2
SK 700E-551-340-A
SK 700E-751-340-A SK BR1- 60/600-F 60 Ω600 W 7 kW 2 x 0.75 mm2
*) permissible, depending on application, max. 5% ED
2.7.2 Dimensions UB BR
Resistor type Length
L1
Width
B1
Depth
T
Fixing dimensions
Length L2 Width B2 ∅
SK BR1-200/300-F 281 121 48 269 100 5.2
SK BR1-100/400-F 281 121 48 269 100 5.2
SK BR1- 60/600-F 331 121 48 319 100 5.2
All dimensions in mm

2 Assembly and installation
BU 0700 EN Subject to technical alterations 15
B1
L1
B2 L2
T
2.8 Chassis brake resistors (accessory)
During dynamic braking (frequency reduction) of a three phase motor, electrical energy is released and returned to the
frequency inverter. To prevent a safety shut-down of the frequency inverter, the integrated brake
chopper can be activated by the connection of an external brake resistor.
The returned energy is converted into heat, so avoiding a possible overvoltage.
All chassis resistors are UL certified and are not subject to
restrictions in the North American market.
Connection is with screw connectors that are designated +B, -
B (1.5-22kW) or BR, +ZW (30-160kW), and the safety leads.
For overload protection, a thermal switch is located close to
a brake resistor. The switch is freely available via the
screw connectors (2 x 4mm2). The switching capacity is
limited to 250VAC/10A, 125VAC/15A and 30VDC/5A.
2.8.1 Electrical data Chassis BR
Inverter type
NORDAC SK 700E Resistor type Resistance Continuous
output (approx.)
*) Pulse output
(approx.)
Connection
terminals
1.5 ... 2.2 kW SK BR2- 200/300-C 200 Ω300 W 3 kW 10 mm2
3.0 ... 4.0 kW SK BR2- 100/400-C 100 Ω400 W 6 kW 10 mm2
5.5 ... 7.5 kW SK BR2- 60/600-C 60 Ω600 W 9 kW 10 mm2
11 ... 15 kW SK BR2- 30/1500-C 30 Ω1500 W 20 kW 10 mm2
18.5 ... 22 kW SK BR2- 22/2200-C 22 Ω2200 W 28 kW 10 mm2
30 ... 37 kW SK BR2- 12/4000-C 12 Ω4000 W 52 kW 10 mm2
45 ... 55 kW SK BR2- 8/6000-C 8 Ω6000 W 78 kW 10 mm2
75 ... 90 kW SK BR2- 6/7500-C 6 Ω7500 W 104 kW 25 mm2
110 ... 160 kW SK BR2- 3/7500-C 3 Ω7500 W 110 kW 25 mm2
*) permissible, depending on application, max. 5% ED
2.8.2 Dimensions Chassis BR
Resistor type Length
L1
Width
B1
Depth
T
Fixing dimensions
Length L2 Width B2 ∅
SK BR2- 200/300-C 100 170 240 90 150 4.3
SK BR2- 100/400-C
SK BR2- 60/600-C 350 92 120 325 78 6.5
SK BR2- 30/1500-C 560 185 120 530 150 6.5
SK BR2- 22/2200-C 460 270 120 430 240 6.5
SK BR2- 12/4000-C 560 270 240 530 240 6.5
SK BR2- 8/6000-C 470 600 300 440 2 x 220 6.5
SK BR2- 6/7500-C 570 600 300 540 2 x 220 6.5
SK BR2- 3/7500-C
All dimensions in mm
Basic diagram,
design varies according to output

NORDAC SK 700E Operating Manual
16 Subject to technical alterations BU 0700 EN
2.9 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 limit values of the EMC directives , the following instructions should be complied with.
(1) Ensure that all equipment in the cabinet is securely earthed using short earthing cables that have large cross-sections and
which are connected to a common earthing point or earthing bar. 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.
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 PE conductors to this bar normally ensures
safe operation. (See also Chapter 8.3/8.4 EMC guidelines)
(2) Where possible, shielded cables should be used for control loops. 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.
(3) 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.
(4) 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 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.
(5) Shielded or protected cables should be used for load connections and the shielding/protection should be earthed at both
ends, if possible directly to the frequency inverter PE/shield angle.
(6) If the drive is to be used in an area sensitive to electromagnetic interference, then the use of noise suppression filters is
recommended to limit the cable-dependent and radiated interference from the inverter. In this case, the filter must be
mounted as closely as possible to the frequency inverter and fully earthed.
It is also an advantage if the inverter is installed together with the line filter in an EMC-proof enclosure, with EMC-compliant
cabling. (See also Chapter 8.3/8.4 EMC)
(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!
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.

2 Assembly and installation
BU 0700 EN Subject to technical alterations 17
2.10 Electrical connections
2.10.1 Line and motor connections
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.
Make sure that the inverter and motor have the correct supply voltage set.
Note: If synchronising devices are connected or several motors are switched in parallel, the frequency inverter must be
operated with linear voltage/frequency characteristic curves, P211 = 0 and P212 = 0.
The line, motor, brake resistor and control connections are located on the base of the device. To gain access to the terminals,
the device covers (cover and grid) must be removed. The connection terminals are now accessible from the front. All covers
must be put back in place before switching on the supply voltage!
In general, the line, motor and brake resistor cables are connected first as their terminals are located on the bottom circuit
board. The cable inlet is a slit opening on the base of the device.
Note: when using specific wiring sleeves, the maximum connection cross-section can be reduced.
Pay attention to the following:
1. Ensure that the voltage source provides the correct voltage and is suitable for the current required (see Chapter 7
Technical data). Ensure that suitable circuit breakers with the nominal current range are inserted between the voltage
source and the inverter.
2. Connect the line voltage directly to the line terminals L1- L2- L3and 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 cables are used, then the cable shield can also be applied to as much surface as possible on the shield support
angle.
Note:The use of shielded cables is essential in order to maintain the specified radio interference suppression level. (See
also Chapter 8.4 EMC limit value classes)

NORDAC SK 700E Operating Manual
18 Subject to technical alterations BU 0700 EN
-ZW
BR
+ZW
PE
PE L1 L2 L3
M
3 ~
L3
L2L1 PE
Input
PE
W
U V
Output
BR
2.10.2 Mains connection up to 22kW (PE/L1/L2/L3)
No special safety devices are required on the mains input side for
the frequency inverter, just the normal mains protection (see
technical data) and a master switch/fuse.
Connection terminals cross-section:
SK 700E-151-340-A ...
SK 700E-751-340-A VDE 4mm²
UL/cUL (AWG 24-10)
SK 700E-112-340-A ...
SK 700E-152-340-A VDE 10mm²
UL/cUL (AWG 22-8)
SK 700E-182-340-A ...
SK 700E-222-340-A VDE 25mm²
UL/cUL (AWG 16-4)
Note: The use of this inverter on an IT network is possible
after minor alterations. Please consult your supplier.
2.10.3 Mains connection from 30kW (PE/L1/L2/L3)
No special safety devices are required on the mains input side for
the frequency inverter, just the normal mains protection (see
technical data) and a master switch/fuse.
Connection terminals cross-section:
SK 700E-302-340-O ...
SK 700E-372-340-O VDE 35mm²
(PE terminals = 16mm2) UL/cUL (AWG 2)
SK 700E-452-340-O ...
SK 700E-752-340-O VDE 25-50mm²
UL/cUL (AWG 4-0)
SK 700E-902-340-O VDE 95mm²
UL/cUL (AWG 000)
SK 700E-113-340-O ...
SK 700E-163-340-O VDE 50-150mm²
(PE terminals = 35-95mm2) UL/cUL (AWG 0-300 MCM)
Note: The use of this inverter on an IT network is possible
after minor alterations. Please consult your supplier.
Note: Only one PE terminal is located near the mains connection in the 90kW
device. Further PE connections can be implemented on the device housing.
PE L1 L2 L3
M
3 ~
L3
L2L1
PE
Input
+B -B
Brake
-DC
PE W
U V
Output
Brake resistor
Optional, Chap. 2.7/2.8
Brake resistor
Optional, Chap. 2.7/2.8
30-75kW and 110-160kW, 90kW differs

2 Assembly and installation
BU 0700 EN Subject to technical alterations 19
2.10.4 Motor cable (U/V/W/PE)
The motor cable must have a maximum length of 150m (Please note also Chapter 8.4 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 , additional output chokes must be used.
For multiple motor use, the total cable length consists of the sum of the individual cable lengths. If the sum of the cable lengths
is too high, one output choke should be used per motor/cable.
Connection terminals cross-section:
SK 700E-151-340-A ... SK 700E-751-340-A VDE 4mm²
UL/cUL (AWG 24-10)
SK 700E-112-340-A ... SK 700E-152-340-A VDE 10mm²
UL/cUL (AWG 22-8)
SK 700E-182-340-A ... SK 700E-222-340-A VDE 25mm²
UL/cUL (AWG 16-4)
SK 700E-302-340-O ... SK 700E-372-340-O VDE 35mm²
(PE terminals = 16mm2) UL/cUL (AWG 2)
SK 700E-452-340-O ... SK 700E-752-340-O VDE 25-50mm²
UL/cUL (AWG 4-0)
SK 700E-902-340-O VDE 95mm²
(no PE terminal) UL/cUL (AWG 000)
SK 700E-113-340-O ... SK 700E-163-340-O VDE 50-150mm²
(PE terminals = 35-95mm2) UL/cUL (AWG 0-300 MCM)
2.10.5 Brake chopper connection up to 22kW (+B/-B)
The connection for the frequency inverter Æbrake resistor should be shielded and as short as possible.
Note: Possible strong heating of the brake resistor should be taken into account.
Connection terminals cross-section:
SK 700E-151-340-A ... SK 700E-751-340-A VDE 4mm²
UL/cUL (AWG 24-10)
SK 700E-112-340-A ... SK 700E-152-340-A VDE 10mm²
UL/cUL (AWG 22-8)
SK 700E-182-340-A ... SK 700E-222-340-A VDE 25mm²
UL/cUL (AWG 16-4)
2.10.6 Brake resistor connection from 30kW (BR+ZW)
The connection for the frequency inverter Æbrake resistor should be shielded and as short as possible.
Note: Possible strong heating of the brake resistor should be taken into account.
Connection terminals cross-section:
SK 700E-302-340-O ... SK 700E-372-340-O VDE 16mm²
(add. PE terminals = 16mm2) UL/cUL (AWG 6)
SK 700E-452-340-O ... SK 700E-752-340-O VDE 0.75-35mm²
(add. PE terminals = 0.75-35mm2) UL/cUL (AWG 18-2)
SK 700E-902-340-O VDE 50mm²
(no PE terminals) UL/cUL (AWG 4-0)
SK 700E-113-340-O ... SK 700E-163-340-O VDE 95mm²
(add. PE terminals = 95mm2) UL/cUL (AWG 000)
Note: Only one PE terminal is located near the mains connection in the 90kW
device. Further PE connections can be implemented on the device housing.

NORDAC SK 700E Operating Manual
20 Subject to technical alterations BU 0700 EN
2.10.7 Control unit connection
The manner and type of control unit connections are dependent on the options chosen (customer unit / special extension unit).
The possible variations are described in Chapter 3.2/3.3.
On these pages you will find general data and information on all customer units and special extension units.
Connection terminals: - Plugs, terminals and connectors can be released with a small screwdriver
Maximum connection cross-section: - 1.5 mm2or 1.0 mm2, depending on option
Cable: - Lay and shield separately from the mains/motor cables
Control voltages: - 5V for the supply of an incremental encoder
(Short-circuit proof) - 10V, max. 10mA, reference voltage for an external potentiometer
- 15V for the supply of the digital inputs or an incremental or absolute encoder
- analog output 0 - 10V, max. 5mA for an external display unit
Note: All control voltages are based on a common reference potential (GND).
5 / 15 V can if necessary, be taken from several terminals. The sum of the
currents is max. 300 mA.