NORD Drivesystems BU0000 - Manual (Page 79)

Getriebebau Nord
79 BU 0000 GB
Sensorless vectorial current (ISD) control
These devices are provided with sensorless vectorial current control system which will
constantly ensure an optimised voltage-to-frequency relation based on the simulated operation
of an asynchronous three-phase motor.
Thus maximum starting and overload torques are available to the drive while speed remains
constant.
Owing to the huge variety of setting options these inverters are capable of controlling any three-
phase motor on the market.
Outputs between 1.5 kW and 160 kW (3 AC 380 ... 480 V) are provided.
Basic Features:
High starting torque (up to 400%) and precise control of the motor speed owing to vectorial
current control without a sensor being involved
Variable configuration according to customer requirements using special equipment boxes,
custom interfaces, and special extensions
Easy and convenient installation, parameterisation, and system start-up
The great variety of setting options allow for configuration of any commonly available three-
phase motor. For NORD geared motors the parameter values are preset in the factory.
Installation of one unit right beside the other in the cabinet without the need of spacing
Admissible ambient temperature up to 50°C
(S3 duty cycle)
Integrated line filter for limit curve A (up to 22kW)
Automatic measurement of the stator resistance
Four separate parameter sets switchable on-line
Analogue PI / PID controller
Programmable relay outputs
Programmable d.c. braking
Integrated braking chopper for four-quadrant operation
Adjustable ramp smoothing
Scalable analogue output, 0 to 10 volt
Detachable parameterisation and display module
Multilingual clear text display and data storage function
Optionally available: incremental shaft encoder feedback for high-precision speed control
Optionally fitted with integrated positioning control for exact positioning of the drive
Variable equipment boxes (Technology Units)
... are snapped on to the inverter externally. They are used to control the inverter or read out
current operating values right on the device.