Vacon NXS – robust drive for heavy use
The Vacon NXS is a compact AC drive in the power range of 0.75 – 560 kW and supply voltages of 208-690 V for heavy use in machines, buildings and all branches of industry.
The robust design incorporates effective protection against supply network disturbances. Trip-free operation is also guaranteed due to sophisticated motor control principles and motor/drive protection features, component selection and effective cooling.
The reliable choice
Enclosure classes of IP21 and IP54 and integrated high-level EMC filters make the Vacon NXS suitable for all environments.
The Start-Up Wizard and the standard All-In-One Application Package make parameter setting extremely easy in all cases, from simple to complex.
The wide and flexible standard I/O and option for five I/O boards provide versatile controllability. The most common fieldbus options are also available.
The modular design of the Vacon NXS brings several advantages:
- the control terminals are safely separated from power terminals
- upgrading the control inputs and outputs is easy and convenient
- replacing the cooling fan (the only regularly replaceable component) is fast
- the display panel can be utilized for parameter copying, etc.
The robust drive for heavy use
- Easy to use display panel
- Start-Up Wizard
- All-in-One Application Package
- Versatile PID controller and pump automatic for 1-5 pumps
- Special applications available (water control, high speed, etc.)
- Five slots for control boards (2 basic boards and 3 option boards)
- High switching frequency, low noise
- Steady state speed error < 1% Low torque ripple Starting torque > 200%, depending on AC drive sizing
- Suitable for multi-motor applications
Design & dimensions
The mechanical design is extremely compact. The IP54 units in particular are the smallest AC drives on the market. All units are suitable for both wall and enclosure mounting with all necessary components:
- integrated EMC filters
- AC chokes
- cable protection
- dust and water protection
The effective super-cooling principle allows high ambient temperatures and high switching frequencies without derating.
Vacon NXS control unit
There are no fixed inputs or outputs in the Vacon NXS. There are five slots (A, B, C, D and E) for I/O boards, and a suitable board can be selected for each slot.
The Vacon NXS units are delivered with OPT-A1 and OPT-A2 boards if the I/O is not specified. In many countries, boards OPT-A1 and OPT-A3 are used as standard I/O as the galvanically (double) isolated thermistor input is often required.
Removable terminals, snap-in card installation, automatic card identification and instructions on the drive help making quick connections. If necessary, the inputs, outputs and fieldbus boards can be added in the field. The Vacon NXS is simply the most flexible frequency converter series on the market.
An external +24 V supply option enables communication with the control unit even if the mains supply is switched off (e.g. fieldbus communication and parameter settings).
The uncluttered text display panel with a well-defined menu structure and functions such as parameter copy and start-up wizard makes commissioning and fine-tuning as easy as possible.
A maximum of three values can be monitored simultaneously (the multi-monitoring feature).
The All-in-One application package has seven applications (=default settings and functionality of control inputs and outputs) which can be selected with one parameter.
The application will also be requested by the Start-up Wizard at the first power-up. With this single setting, the controls can be programmed e.g. for two external control places or a pressure control with the integrated PID controller. In most cases, the default basic application is suitable and only the min/max frequencies as well as motor nominal values must be set.
Thanks to the modular software applications made by the Vacon NC1131-3 Engineering tool, the All-in-One application package can be replaced by the Water application package that contains several applications optimized for water handling. There are also several other general-purpose software applications available.