Products / Parker / Motors Drives and Controllers / AC Variable Frequency Drives KW Rated AC890 Series
The AC890 are a compact, modular system variable speed AC drive engineered to control speed and position of open-loop and closed-loop, single- or multi-motor AC induction or servo motor applications, up to 1200kW
The AC890 are a compact, modular system
variable speed AC drive engineered to control speed and position of
open-loop and closed-loop, single- or multi-motor AC induction or
servo motor applications. Compatible with a wide range of feedback
options, the AC890 variable speed drive is compatible with any AC
motor and virtually any speed/position feedback options. With this
flexibility you may not even need to replace your existing AC motor
to achieve high performance, saving you time and money. The AC890
drives are available in 380-460/500V 3-phase 0.55 to 1200kW and
220V-240V 3-phase 0.55 to 7.5kW.
Features:
The AC890 variable speed drives can be configured for 4 different
modes of operation :
• Open-loop (volts / frequency) control
This mode is ideal for basic, single or multi-motor speed control.
• Sensorless vector control
With its ultra high performance sensorless vector algorithm, the
AC890 delivers a combination of both high torque and close speed
regulation without the need for any speed measuring transducer.
• Closed-loop vector control
Full closed-loop flux vector performance can be achieved with the
AC890 by simply adding an encoder feedback 'technology box'. This
provides 100% continuous full load standstill torque, plus a highly
dynamic speed loop more than sufficient for the most demanding
applications.
• 4 Quadrant active front-end power supply module
With this configuration, the energy is fed back into the mains
supply with sinusoidal currents and unity power factor; a very low
current harmonic content is achieved (THD < 5%).
Advantages:
• Ultra-fast control loops -
- Torque loop : 62.5µs / - Speed loop : 62.5µs / - Position loop :
62.5µs
• Serves the most demanding applications :
Taking advantage of leading edge control algorithms running on a
fast 150Mhz microprocessor, the AC890 drive can achieve very
high-bandwidth control loops. This allows you to use the drive for
the most demanding industrial applications e.g. printing,
cut-tolength, rotary shear, converting and slitting.
• Minimal delay between the fieldbus setpoints and the control loops
:
Designed to integrate in existing automation systems, the AC890
features high performance ports linked directly to the fast control
loops of the drive. Minimum delay exists between your digital
setpoint sent through a fieldbus and the control loops.
• Replacement of analogue solutions :
Your existing analogue setpoint-based solutions can be replaced by a
digital fieldbus-based solution with minimal bandwidth loss.
• Flexible feedback :
The AC890 offers system designers complete flexibility in their
choice of feedback technology.
- Incremental encoder / - EnDat 2.1 (SinCos) encoder / - Resolver
• Open standards for protection of investment :
The AC890 has been deliberately designed to integrate seamlessly
into your automation network.
To connect to your PLC or fieldbus network you can simply choose
from the wide range of communication technology boxes.
• Two performance level options for your needs :
- Advanced performance
Motion control with added position loop, motion control function
blocks, move incremental, move absolute, move home, line drive
master ramp and section control, winder blocks (speed winder,
current winder), full function PID, machine state and others.
- High performance
All advanced features plus : library of pre-engineered application
specific LINK VM function blocks such as : shaftless printing,
cut-to-length, adanced winding, advanced traversing and others.