nord NORDAC START Series, User Manual

Page: 9 / 120

1 General
BU 0135 en-4118 9
1 General
The SK 1x5E series is based on the tried and tested NORD platform. The devices are characterised
by their compact design and their optimum operational characteristics, and have uniform
parametrisation.
Due to dual phase control, not only a pure motor start, but also a soft start is possible. The phase
control process was selected so that the resulting harmonic torques are kept as low as possible. A
comprehensive spectrum of monitoring functions rounds off the range.
Due to the numerous setting options, any three-phase synchronous motor can be controlled.
The motor starter is basically intended for a three-phase mains connection. The power range is from
0.25 kW to 7.5 kW.
This series of devices can be adapted to individual requirements by means of modular assemblies.
This manual is based on the device software specified in the version list (see P707). If the motor
starter uses a different software version, this may cause differences. If necessary, the current manual
can be downloaded from the Internet ( http://www.nord.com/ ).
Additional descriptions exist for optional functions and bus systems ( http://www.nord.com/ ).
Information
Accessories
Changes may also be made to the accessories that are mentioned in the manual. Current details of these are
included in separate data sheets, which are listed under www.nord.com under the heading Documentation →
Manuals → Electronic drive technology → Techn. Info / Data sheet . The data sheets available at the date of
publication of this manual are listed by name in the relevant sections (TI ...).
The different versions of the device series also result in different functionality (e.g.: with integrated AS
Interface or with integrated PROFIBUS DP interface).
In the simplest configuration, all of the most important parameters can be set using up to four
potentiometers and four DIP switches, even without a PC or a control unit. LEDs are provided for the
diagnostics of the operating status. The use of a control module is therefore not absolutely necessary.
Installation directly on a motor is typical of this device series. Alternatively, optional accessories are
also available for mounting the devices close to the motor, e.g. on the wall or on a machine frame.
In order to have access to all parameters, the internal RS232 interface (access via RJ12 connection)
can be used. Access to the parameters takes place via an optional SimpleBox or ParameterBox, for
example.
The parameter settings modified by the owner/operator must be saved in the Flash memory of the
device (
P550
). Otherwise the changed parameter settings would be lost when the device was
switched off.
1.1 Overview
This manual describes all of the possible functions and equipment. The equipment and functionality
are limited depending on the type of device. Type SK 175E devices have the maximum configuration
level.
Basic characteristics
• 2 digital inputs
• 2 digital outputs
• Separate temperature sensor input (TF+/TF-)
• Actuation and connection of an electromechanical brake