NORD Drivesystems BU0000 - Manual (Page 72)

NORD CON Manual
72 BU 0000 GB
11.3 Frequency Inverters
11.3.1 General
NORDAC SK 200 E
NORDAC SK 300 E
NORDAC SK 500 E
NORDAC SK 700 E
0,25 kW bis 7,5 kW
0,55 kW bis 4,0 kW
0,25 kW bis 7,5 kW
1,5 kW bis 160 kW
11.3.2 NORDAC SK 200 E
General information
The NORDAC SK 200E is based on the tried and tested NORD platform. These devices
feature a compact design with optimum control characteristics.
These devices are provided with sensorless vector current control 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.
This series of devices can be adapted to individual requirements by means of extension
modules. Due to the numerous setting options, these inverters are capable of operating all
three-phase motors. The power range is from 0.25kW to 7.5kW with an integrated mains filter.
This manual is based on the device software V1.2 R0 (see P707) of the SK 200E. 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/).
For the SK 215E/225E/235E there are additional descriptions for functional safety (BU 0230),
the integrated AS interface (BU 0200, Section 5.4) and the positioning system (BU 0210). These
contain all the necessary additional information for start-up. If a bus system is used for
communication, a corresponding description (e.g. BU 0220 für PROFIBUS DP) is provided, or
this can be downloaded from the Internet (http://www.nord.com/).
Typically, this series of devices is installed directly on a three-phase asynchronous motor.
Alternatively, there are optional accessories for mounting the devices in the vicinity of the motor,
e.g. on a wall or the frame of a machine.
In the simplest configuration, even without an EEPROM, there is the possibility of setting all
important parameters via two potentiometers and eight DIP switches. LEDs are provided for the
diagnosis of the operating status. The use of a control module is therefore not absolutely
necessary. In order to gain access to all parameters, the internal RS232 PC interface (RJ12)
can be used, or an optional SimpleBox or ParameterBox may be used. In this case, the
parameter settings which have been changed by the operator are stored in the plug-in