Drive System Experience
Nol-Tec Southeast has been developing and installing complex variable speed drive systems for more than 20 years. Our broad-based knowledge includes:
- AC variable speed drives using simple Volts/Hz control, sensor-less vector control, flux vector control and field-oriented control
- AC drives with:
- Common DC bus (non-regenerative with or without braking chopper)
- Shared DC bus/shared AC/DC bus (with or without braking chopper)
- Regenerative bus supply (active front end)
- Shared regenerative braking configuration
- Parallel regenerative braking configuration
- DC drives
- Lifting applications using encoder and encoder-less torque proving
- Tension control
- Bulk inverter applications
- Synchronous motor control
- Extruder applications
- Motion control applications
- Material handling applications
- Positioning applications
- Forced draft blower applications
- Pump applications
- Calender line applications (tire industry)
- Winder controls (surface winders/center winders)
- Energy conservation
- Automated drive parameter management
- AC & DC drive maintenance and repair
Drive system design is a core business at Nol-Tec. Projects range from simple stand-alone drives, to complex networked installations with hundreds of individual drives. Our engineers are experienced with design issues such as:
- Dynamic braking
- Torque proving
- Regenerative braking
- Power dip ride-through
- And many more...
Upgrade Older Drives
Older machines creating high maintenance costs can be up-fitted with new drives. Often DC motors can be replaced with AC motors and drives to reduce maintenance costs and improve up time. Alternately, existing motors can stay in place while the drives are replaced. Newer technology drives offer many communications options, and provide the opportunity to greatly simplify control wiring as part of the retrofit. In some cases this can significantly reduce machine downtime due to problematic control wiring. New technology drives also offer advantages in improved reliability, energy savings and enhanced performance.
Drive Service and Support
Through our highly-experienced field engineers, we offer 24/7 techincal support on-site, remote online and by phone including:
- Drive programming start-up
- System commissioning
- Emergency breakdowns
- Troubleshooting
- Diagnostics
- Repair